Config - access Perl configuration information
use Config;
if ($Config{'cc'} =~ /gcc/) {
print "built by gcc\n";
}
use Config qw(myconfig config_sh config_vars);
print myconfig();
print config_sh();
config_vars(qw(osname archname));
The Config module contains all the information that was available to
the Configure program at Perl build time (over 900 values).
Shell variables from the config.sh file (written by Configure) are
stored in the readonly-variable %Config, indexed by their names.
Values stored in config.sh as 'undef' are returned as undefined
values. The perl exists function can be used to check if a
named variable exists.
-V in perlrun/Switches.
Prints to STDOUT the values of the named configuration variable. Each is printed on a separate line in the form:
name='value';
Names which are unknown are output as name='UNKNOWN';.
See also -V:name in perlrun/Switches.
Here's a more sophisticated example of using %Config:
use Config;
use strict;
my %sig_num;
my @sig_name;
unless($Config{sig_name} && $Config{sig_num}) {
die "No sigs?";
} else {
my @names = split ' ', $Config{sig_name};
@sig_num{@names} = split ' ', $Config{sig_num};
foreach (@names) {
$sig_name[$sig_num{$_}] ||= $_;
}
}
print "signal #17 = $sig_name[17]\n";
if ($sig_num{ALRM}) {
print "SIGALRM is $sig_num{ALRM}\n";
}
Because this information is not stored within the perl executable itself it is possible (but unlikely) that the information does not relate to the actual perl binary which is being used to access it.
The Config module is installed into the architecture and version specific library directory ($Config{installarchlib}) and it checks the perl version number when loaded.
The values stored in config.sh may be either single-quoted or
double-quoted. Double-quoted strings are handy for those cases where you
need to include escape sequences in the strings. To avoid runtime variable
interpolation, any $ and @ characters are replaced by \$ and
\@, respectively. This isn't foolproof, of course, so don't embed \$
or \@ in double-quoted strings unless you're willing to deal with the
consequences. (The slashes will end up escaped and the $ or @ will
trigger variable interpolation)
Most Config variables are determined by the Configure script
on platforms supported by it (which is most UNIX platforms). Some
platforms have custom-made Config variables, and may thus not have
some of the variables described below, or may have extraneous variables
specific to that particular port. See the port specific documentation
in such cases.
_a
From Unix.U:
This variable defines the extension used for ordinary library files. For unix, it is .a. The . is included. Other possible values include .lib.
_exe
From Unix.U:
This variable defines the extension used for executable files.
DJGPP, Cygwin and OS/2 use .exe. Stratus VOS uses .pm.
On operating systems which do not require a specific extension
for executable files, this variable is empty.
_o
From Unix.U:
This variable defines the extension used for object files. For unix, it is .o. The . is included. Other possible values include .obj.
afs
From afs.U:
This variable is set to true if AFS (Andrew File System) is used
on the system, false otherwise. It is possible to override this
with a hint value or command line option, but you'd better know
what you are doing.
afsroot
From afs.U:
This variable is by default set to /afs. In the unlikely case this is not the correct root, it is possible to override this with a hint value or command line option. This will be used in subsequent tests for AFSness in the Perl configure and test process.
alignbytes
From alignbytes.U:
This variable holds the number of bytes required to align a double-- or a long double when applicable. Usual values are 2, 4 and 8. The default is eight, for safety.
ansi2knr
From ansi2knr.U:
This variable is set if the user needs to run ansi2knr. Currently, this is not supported, so we just abort.
aphostname
From d_gethname.U:
This variable contains the command which can be used to compute the host name. The command is fully qualified by its absolute path, to make it safe when used by a process with super-user privileges.
api_revision
From patchlevel.U:
The three variables, api_revision, api_version, and
api_subversion, specify the version of the oldest perl binary
compatible with the present perl. In a full version string
such as 5.6.1, api_revision is the 5.
Prior to 5.5.640, the format was a floating point number,
like 5.00563.
perl.c:incpush() and lib/lib.pm will automatically search in
$sitelib/.. for older directories back to the limit specified
by these api_ variables. This is only useful if you have a
perl library directory tree structured like the default one.
See INSTALL for how this works. The versioned site_perl
directory was introduced in 5.005, so that is the lowest
possible value. The version list appropriate for the current
system is determined in inc_version_list.U.
XXX To do: Since compatibility can depend on compile time
options (such as bincompat, longlong, etc.) it should
(perhaps) be set by Configure, but currently it isn't.
Currently, we read a hard-wired value from patchlevel.h.
Perhaps what we ought to do is take the hard-wired value from
patchlevel.h but then modify it if the current Configure
options warrant. patchlevel.h then would use an #ifdef guard.
api_subversion
From patchlevel.U:
The three variables, api_revision, api_version, and
api_subversion, specify the version of the oldest perl binary
compatible with the present perl. In a full version string
such as 5.6.1, api_subversion is the 1. See api_revision for
full details.
api_version
From patchlevel.U:
The three variables, api_revision, api_version, and
api_subversion, specify the version of the oldest perl binary
compatible with the present perl. In a full version string
such as 5.6.1, api_version is the 6. See api_revision for
full details. As a special case, 5.5.0 is rendered in the
old-style as 5.005. (In the 5.005_0x maintenance series,
this was the only versioned directory in $sitelib.)
api_versionstring
From patchlevel.U:
This variable combines api_revision, api_version, and api_subversion in a format such as 5.6.1 (or 5_6_1) suitable for use as a directory name. This is filesystem dependent.
ar
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the ar program. After Configure runs,
the value is reset to a plain ar and is not useful.
archlib
From archlib.U:
This variable holds the name of the directory in which the user wants to put architecture-dependent public library files for $package. It is most often a local directory such as /usr/local/lib. Programs using this variable must be prepared to deal with filename expansion.
archlibexp
From archlib.U:
This variable is the same as the archlib variable, but is filename expanded at configuration time, for convenient use.
archname64
From use64bits.U:
This variable is used for the 64-bitness part of $archname.
archname
From archname.U:
This variable is a short name to characterize the current architecture. It is used mainly to construct the default archlib.
archobjs
From Unix.U:
This variable defines any additional objects that must be linked in with the program on this architecture. On unix, it is usually empty. It is typically used to include emulations of unix calls or other facilities. For perl on OS/2, for example, this would include os2/os2.obj.
asctime_r_proto
From d_asctime_r.U:
This variable encodes the prototype of asctime_r.
It is zero if d_asctime_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_asctime_r
is defined.
awk
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the awk program. After Configure runs,
the value is reset to a plain awk and is not useful.
baserev
From baserev.U:
The base revision level of this package, from the .package file.
bash
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
bin
From bin.U:
This variable holds the name of the directory in which the user wants to put publicly executable images for the package in question. It is most often a local directory such as /usr/local/bin. Programs using this variable must be prepared to deal with ~name substitution.
binexp
From bin.U:
This is the same as the bin variable, but is filename expanded at configuration time, for use in your makefiles.
bison
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the bison program. After Configure runs,
the value is reset to a plain bison and is not useful.
byacc
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the byacc program. After Configure runs,
the value is reset to a plain byacc and is not useful.
byteorder
From byteorder.U:
This variable holds the byte order in a UV. In the following,
larger digits indicate more significance. The variable byteorder
is either 4321 on a big-endian machine, or 1234 on a little-endian,
or 87654321 on a Cray ... or 3412 with weird order !
c
From n.U:
This variable contains the \c string if that is what causes the echo command to suppress newline. Otherwise it is null. Correct usage is $echo $n "prompt for a question: $c".
castflags
From d_castneg.U:
This variable contains a flag that precise difficulties the compiler has casting odd floating values to unsigned long: 0 = ok 1 = couldn't cast < 0 2 = couldn't cast >= 0x80000000 4 = couldn't cast in argument expression list
cat
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the cat program. After Configure runs,
the value is reset to a plain cat and is not useful.
cc
From cc.U:
This variable holds the name of a command to execute a C compiler which
can resolve multiple global references that happen to have the same
name. Usual values are cc and gcc.
Fervent ANSI compilers may be called c89. AIX has xlc.
cccdlflags
From dlsrc.U:
This variable contains any special flags that might need to be
passed with cc -c to compile modules to be used to create a shared
library that will be used for dynamic loading. For hpux, this
should be +z. It is up to the makefile to use it.
ccdlflags
From dlsrc.U:
This variable contains any special flags that might need to be passed to cc to link with a shared library for dynamic loading. It is up to the makefile to use it. For sunos 4.1, it should be empty.
ccflags
From ccflags.U:
This variable contains any additional C compiler flags desired by the user. It is up to the Makefile to use this.
ccflags_uselargefiles
From uselfs.U:
This variable contains the compiler flags needed by large file builds and added to ccflags by hints files.
ccname
From Checkcc.U:
This can set either by hints files or by Configure. If using
gcc, this is gcc, and if not, usually equal to cc, unimpressive, no?
Some platforms, however, make good use of this by storing the
flavor of the C compiler being used here. For example if using
the Sun WorkShop suite, ccname will be workshop.
ccsymbols
From Cppsym.U:
The variable contains the symbols defined by the C compiler alone. The symbols defined by cpp or by cc when it calls cpp are not in this list, see cppsymbols and cppccsymbols. The list is a space-separated list of symbol=value tokens.
ccversion
From Checkcc.U:
This can set either by hints files or by Configure. If using a (non-gcc) vendor cc, this variable may contain a version for the compiler.
cf_by
From cf_who.U:
Login name of the person who ran the Configure script and answered the questions. This is used to tag both config.sh and config_h.SH.
cf_email
From cf_email.U:
Electronic mail address of the person who ran Configure. This can be used by units that require the user's e-mail, like MailList.U.
cf_time
From cf_who.U:
Holds the output of the date command when the configuration file was
produced. This is used to tag both config.sh and config_h.SH.
charsize
From charsize.U:
This variable contains the value of the CHARSIZE symbol, which
indicates to the C program how many bytes there are in a character.
chgrp
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
chmod
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the chmod program. After Configure runs,
the value is reset to a plain chmod and is not useful.
chown
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
clocktype
From d_times.U:
This variable holds the type returned by times(). It can be long,
or clock_t on BSD sites (in which case <sys/types.h> should be
included).
comm
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the comm program. After Configure runs,
the value is reset to a plain comm and is not useful.
compress
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
contains
From contains.U:
This variable holds the command to do a grep with a proper return
status. On most sane systems it is simply grep. On insane systems
it is a grep followed by a cat followed by a test. This variable
is primarily for the use of other Configure units.
cp
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the cp program. After Configure runs,
the value is reset to a plain cp and is not useful.
cpio
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
cpp
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the cpp program. After Configure runs,
the value is reset to a plain cpp and is not useful.
cpp_stuff
From cpp_stuff.U:
This variable contains an identification of the catenation mechanism used by the C preprocessor.
cppccsymbols
From Cppsym.U:
The variable contains the symbols defined by the C compiler when it calls cpp. The symbols defined by the cc alone or cpp alone are not in this list, see ccsymbols and cppsymbols. The list is a space-separated list of symbol=value tokens.
cppflags
From ccflags.U:
This variable holds the flags that will be passed to the C pre- processor. It is up to the Makefile to use it.
cpplast
From cppstdin.U:
This variable has the same functionality as cppminus, only it applies to cpprun and not cppstdin.
cppminus
From cppstdin.U:
This variable contains the second part of the string which will invoke
the C preprocessor on the standard input and produce to standard
output. This variable will have the value - if cppstdin needs
a minus to specify standard input, otherwise the value is "".
cpprun
From cppstdin.U:
This variable contains the command which will invoke a C preprocessor on standard input and put the output to stdout. It is guaranteed not to be a wrapper and may be a null string if no preprocessor can be made directly available. This preprocessor might be different from the one used by the C compiler. Don't forget to append cpplast after the preprocessor options.
cppstdin
From cppstdin.U:
This variable contains the command which will invoke the C preprocessor on standard input and put the output to stdout. It is primarily used by other Configure units that ask about preprocessor symbols.
cppsymbols
From Cppsym.U:
The variable contains the symbols defined by the C preprocessor alone. The symbols defined by cc or by cc when it calls cpp are not in this list, see ccsymbols and cppccsymbols. The list is a space-separated list of symbol=value tokens.
crypt_r_proto
From d_crypt_r.U:
This variable encodes the prototype of crypt_r.
It is zero if d_crypt_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_crypt_r
is defined.
cryptlib
From d_crypt.U:
This variable holds -lcrypt or the path to a libcrypt.a archive if the crypt() function is not defined in the standard C library. It is up to the Makefile to use this.
csh
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the csh program. After Configure runs,
the value is reset to a plain csh and is not useful.
ctermid_r_proto
From d_ctermid_r.U:
This variable encodes the prototype of ctermid_r.
It is zero if d_ctermid_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctermid_r
is defined.
ctime_r_proto
From d_ctime_r.U:
This variable encodes the prototype of ctime_r.
It is zero if d_ctime_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_ctime_r
is defined.
d__fwalk
From d__fwalk.U:
This variable conditionally defines HAS__FWALK if _fwalk() is
available to apply a function to all the file handles.
d_access
From d_access.U:
This variable conditionally defines HAS_ACCESS if the access() system
call is available to check for access permissions using real IDs.
d_accessx
From d_accessx.U:
This variable conditionally defines the HAS_ACCESSX symbol, which
indicates to the C program that the accessx() routine is available.
d_alarm
From d_alarm.U:
This variable conditionally defines the HAS_ALARM symbol, which
indicates to the C program that the alarm() routine is available.
d_archlib
From archlib.U:
This variable conditionally defines ARCHLIB to hold the pathname
of architecture-dependent library files for $package. If
$archlib is the same as $privlib, then this is set to undef.
d_asctime_r
From d_asctime_r.U:
This variable conditionally defines the HAS_ASCTIME_R symbol,
which indicates to the C program that the asctime_r()
routine is available.
d_atolf
From atolf.U:
This variable conditionally defines the HAS_ATOLF symbol, which
indicates to the C program that the atolf() routine is available.
d_atoll
From atoll.U:
This variable conditionally defines the HAS_ATOLL symbol, which
indicates to the C program that the atoll() routine is available.
d_attribut
From d_attribut.U:
This variable conditionally defines HASATTRIBUTE, which
indicates the C compiler can check for function attributes,
such as printf formats.
d_bcmp
From d_bcmp.U:
This variable conditionally defines the HAS_BCMP symbol if
the bcmp() routine is available to compare strings.
d_bcopy
From d_bcopy.U:
This variable conditionally defines the HAS_BCOPY symbol if
the bcopy() routine is available to copy strings.
d_bsd
From Guess.U:
This symbol conditionally defines the symbol BSD when running on a
BSD system.
d_bsdgetpgrp
From d_getpgrp.U:
This variable conditionally defines USE_BSD_GETPGRP if
getpgrp needs one arguments whereas USG one needs none.
d_bsdsetpgrp
From d_setpgrp.U:
This variable conditionally defines USE_BSD_SETPGRP if
setpgrp needs two arguments whereas USG one needs none.
See also d_setpgid for a POSIX interface.
d_bzero
From d_bzero.U:
This variable conditionally defines the HAS_BZERO symbol if
the bzero() routine is available to set memory to 0.
d_casti32
From d_casti32.U:
This variable conditionally defines CASTI32, which indicates whether the C compiler can cast large floats to 32-bit ints.
d_castneg
From d_castneg.U:
This variable conditionally defines CASTNEG, which indicates
wether the C compiler can cast negative float to unsigned.
d_charvspr
From d_vprintf.U:
This variable conditionally defines CHARVSPRINTF if this system
has vsprintf returning type (char*). The trend seems to be to
declare it as "int vsprintf()".
d_chown
From d_chown.U:
This variable conditionally defines the HAS_CHOWN symbol, which
indicates to the C program that the chown() routine is available.
d_chroot
From d_chroot.U:
This variable conditionally defines the HAS_CHROOT symbol, which
indicates to the C program that the chroot() routine is available.
d_chsize
From d_chsize.U:
This variable conditionally defines the CHSIZE symbol, which
indicates to the C program that the chsize() routine is available
to truncate files. You might need a -lx to get this routine.
d_class
From d_class.U:
This variable conditionally defines the HAS_CLASS symbol, which
indicates to the C program that the class() routine is available.
d_closedir
From d_closedir.U:
This variable conditionally defines HAS_CLOSEDIR if closedir() is
available.
d_cmsghdr_s
From d_cmsghdr_s.U:
This variable conditionally defines the HAS_STRUCT_CMSGHDR symbol,
which indicates that the struct cmsghdr is supported.
d_const
From d_const.U:
This variable conditionally defines the HASCONST symbol, which
indicates to the C program that this C compiler knows about the
const type.
d_crypt
From d_crypt.U:
This variable conditionally defines the CRYPT symbol, which
indicates to the C program that the crypt() routine is available
to encrypt passwords and the like.
d_crypt_r
From d_crypt_r.U:
This variable conditionally defines the HAS_CRYPT_R symbol,
which indicates to the C program that the crypt_r()
routine is available.
d_csh
From d_csh.U:
This variable conditionally defines the CSH symbol, which
indicates to the C program that the C-shell exists.
d_ctermid_r
From d_ctermid_r.U:
This variable conditionally defines the HAS_CTERMID_R symbol,
which indicates to the C program that the ctermid_r()
routine is available.
d_ctime_r
From d_ctime_r.U:
This variable conditionally defines the HAS_CTIME_R symbol,
which indicates to the C program that the ctime_r()
routine is available.
d_cuserid
From d_cuserid.U:
This variable conditionally defines the HAS_CUSERID symbol, which
indicates to the C program that the cuserid() routine is available
to get character login names.
d_dbl_dig
From d_dbl_dig.U:
This variable conditionally defines d_dbl_dig if this system's
header files provide DBL_DIG, which is the number of significant
digits in a double precision number.
d_dbminitproto
From d_dbminitproto.U:
This variable conditionally defines the HAS_DBMINIT_PROTO symbol,
which indicates to the C program that the system provides
a prototype for the dbminit() function. Otherwise, it is
up to the program to supply one.
d_difftime
From d_difftime.U:
This variable conditionally defines the HAS_DIFFTIME symbol, which
indicates to the C program that the difftime() routine is available.
d_dirfd
From d_dirfd.U:
This variable conditionally defines the HAS_DIRFD constant,
which indicates to the C program that dirfd() is available
to return the file descriptor of a directory stream.
d_dirnamlen
From i_dirent.U:
This variable conditionally defines DIRNAMLEN, which indicates
to the C program that the length of directory entry names is
provided by a d_namelen field.
d_dlerror
From d_dlerror.U:
This variable conditionally defines the HAS_DLERROR symbol, which
indicates to the C program that the dlerror() routine is available.
d_dlopen
From d_dlopen.U:
This variable conditionally defines the HAS_DLOPEN symbol, which
indicates to the C program that the dlopen() routine is available.
d_dlsymun
From d_dlsymun.U:
This variable conditionally defines DLSYM_NEEDS_UNDERSCORE, which
indicates that we need to prepend an underscore to the symbol
name before calling dlsym().
d_dosuid
From d_dosuid.U:
This variable conditionally defines the symbol DOSUID, which
tells the C program that it should insert setuid emulation code
on hosts which have setuid #! scripts disabled.
d_drand48_r
From d_drand48_r.U:
This variable conditionally defines the HAS_DRAND48_R symbol, which indicates to the C program that the drand48_r() routine is available.
d_drand48proto
From d_drand48proto.U:
This variable conditionally defines the HAS_DRAND48_PROTO symbol, which indicates to the C program that the system provides a prototype for the drand48() function. Otherwise, it is up to the program to supply one.
d_dup2
From d_dup2.U:
This variable conditionally defines HAS_DUP2 if dup2() is available to duplicate file descriptors.
d_eaccess
From d_eaccess.U:
This variable conditionally defines the HAS_EACCESS symbol, which
indicates to the C program that the eaccess() routine is available.
d_endgrent
From d_endgrent.U:
This variable conditionally defines the HAS_ENDGRENT symbol, which
indicates to the C program that the endgrent() routine is available
for sequential access of the group database.
d_endgrent_r
From d_endgrent_r.U:
This variable conditionally defines the HAS_ENDGRENT_R symbol,
which indicates to the C program that the endgrent_r()
routine is available.
d_endhent
From d_endhent.U:
This variable conditionally defines HAS_ENDHOSTENT if endhostent() is
available to close whatever was being used for host queries.
d_endhostent_r
From d_endhostent_r.U:
This variable conditionally defines the HAS_ENDHOSTENT_R symbol,
which indicates to the C program that the endhostent_r()
routine is available.
d_endnent
From d_endnent.U:
This variable conditionally defines HAS_ENDNETENT if endnetent() is
available to close whatever was being used for network queries.
d_endnetent_r
From d_endnetent_r.U:
This variable conditionally defines the HAS_ENDNETENT_R symbol,
which indicates to the C program that the endnetent_r()
routine is available.
d_endpent
From d_endpent.U:
This variable conditionally defines HAS_ENDPROTOENT if endprotoent() is
available to close whatever was being used for protocol queries.
d_endprotoent_r
From d_endprotoent_r.U:
This variable conditionally defines the HAS_ENDPROTOENT_R symbol,
which indicates to the C program that the endprotoent_r()
routine is available.
d_endpwent
From d_endpwent.U:
This variable conditionally defines the HAS_ENDPWENT symbol, which
indicates to the C program that the endpwent() routine is available
for sequential access of the passwd database.
d_endpwent_r
From d_endpwent_r.U:
This variable conditionally defines the HAS_ENDPWENT_R symbol,
which indicates to the C program that the endpwent_r()
routine is available.
d_endsent
From d_endsent.U:
This variable conditionally defines HAS_ENDSERVENT if endservent() is
available to close whatever was being used for service queries.
d_endservent_r
From d_endservent_r.U:
This variable conditionally defines the HAS_ENDSERVENT_R symbol,
which indicates to the C program that the endservent_r()
routine is available.
d_eofnblk
From nblock_io.U:
This variable conditionally defines EOF_NONBLOCK if EOF can be seen
when reading from a non-blocking I/O source.
d_eunice
From Guess.U:
This variable conditionally defines the symbols EUNICE and VAX, which
alerts the C program that it must deal with ideosyncracies of VMS.
d_fchdir
From d_fchdir.U:
This variable conditionally defines the HAS_FCHDIR symbol, which
indicates to the C program that the fchdir() routine is available.
d_fchmod
From d_fchmod.U:
This variable conditionally defines the HAS_FCHMOD symbol, which
indicates to the C program that the fchmod() routine is available
to change mode of opened files.
d_fchown
From d_fchown.U:
This variable conditionally defines the HAS_FCHOWN symbol, which
indicates to the C program that the fchown() routine is available
to change ownership of opened files.
d_fcntl
From d_fcntl.U:
This variable conditionally defines the HAS_FCNTL symbol, and indicates
whether the fcntl() function exists
d_fcntl_can_lock
From d_fcntl_can_lock.U:
This variable conditionally defines the FCNTL_CAN_LOCK symbol
and indicates whether file locking with fcntl() works.
d_fd_macros
From d_fd_set.U:
This variable contains the eventual value of the HAS_FD_MACROS symbol,
which indicates if your C compiler knows about the macros which
manipulate an fd_set.
d_fd_set
From d_fd_set.U:
This variable contains the eventual value of the HAS_FD_SET symbol,
which indicates if your C compiler knows about the fd_set typedef.
d_fds_bits
From d_fd_set.U:
This variable contains the eventual value of the HAS_FDS_BITS symbol,
which indicates if your fd_set typedef contains the fds_bits member.
If you have an fd_set typedef, but the dweebs who installed it did
a half-fast job and neglected to provide the macros to manipulate
an fd_set, HAS_FDS_BITS will let us know how to fix the gaffe.
d_fgetpos
From d_fgetpos.U:
This variable conditionally defines HAS_FGETPOS if fgetpos() is
available to get the file position indicator.
d_finite
From d_finite.U:
This variable conditionally defines the HAS_FINITE symbol, which
indicates to the C program that the finite() routine is available.
d_finitel
From d_finitel.U:
This variable conditionally defines the HAS_FINITEL symbol, which
indicates to the C program that the finitel() routine is available.
d_flexfnam
From d_flexfnam.U:
This variable conditionally defines the FLEXFILENAMES symbol, which
indicates that the system supports filenames longer than 14 characters.
d_flock
From d_flock.U:
This variable conditionally defines HAS_FLOCK if flock() is
available to do file locking.
d_flockproto
From d_flockproto.U:
This variable conditionally defines the HAS_FLOCK_PROTO symbol,
which indicates to the C program that the system provides
a prototype for the flock() function. Otherwise, it is
up to the program to supply one.
d_fork
From d_fork.U:
This variable conditionally defines the HAS_FORK symbol, which
indicates to the C program that the fork() routine is available.
d_fp_class
From d_fp_class.U:
This variable conditionally defines the HAS_FP_CLASS symbol, which
indicates to the C program that the fp_class() routine is available.
d_fpathconf
From d_pathconf.U:
This variable conditionally defines the HAS_FPATHCONF symbol, which
indicates to the C program that the pathconf() routine is available
to determine file-system related limits and options associated
with a given open file descriptor.
d_fpclass
From d_fpclass.U:
This variable conditionally defines the HAS_FPCLASS symbol, which
indicates to the C program that the fpclass() routine is available.
d_fpclassify
From d_fpclassify.U:
This variable conditionally defines the HAS_FPCLASSIFY symbol, which
indicates to the C program that the fpclassify() routine is available.
d_fpclassl
From d_fpclassl.U:
This variable conditionally defines the HAS_FPCLASSL symbol, which
indicates to the C program that the fpclassl() routine is available.
d_fpos64_t
From d_fpos64_t.U:
This symbol will be defined if the C compiler supports fpos64_t.
d_frexpl
From d_frexpl.U:
This variable conditionally defines the HAS_FREXPL symbol, which
indicates to the C program that the frexpl() routine is available.
d_fs_data_s
From d_fs_data_s.U:
This variable conditionally defines the HAS_STRUCT_FS_DATA symbol,
which indicates that the struct fs_data is supported.
d_fseeko
From d_fseeko.U:
This variable conditionally defines the HAS_FSEEKO symbol, which
indicates to the C program that the fseeko() routine is available.
d_fsetpos
From d_fsetpos.U:
This variable conditionally defines HAS_FSETPOS if fsetpos() is
available to set the file position indicator.
d_fstatfs
From d_fstatfs.U:
This variable conditionally defines the HAS_FSTATFS symbol, which
indicates to the C program that the fstatfs() routine is available.
d_fstatvfs
From d_statvfs.U:
This variable conditionally defines the HAS_FSTATVFS symbol, which
indicates to the C program that the fstatvfs() routine is available.
d_fsync
From d_fsync.U:
This variable conditionally defines the HAS_FSYNC symbol, which
indicates to the C program that the fsync() routine is available.
d_ftello
From d_ftello.U:
This variable conditionally defines the HAS_FTELLO symbol, which
indicates to the C program that the ftello() routine is available.
d_ftime
From d_ftime.U:
This variable conditionally defines the HAS_FTIME symbol, which indicates
that the ftime() routine exists. The ftime() routine is basically
a sub-second accuracy clock.
d_Gconvert
From d_gconvert.U:
This variable holds what Gconvert is defined as to convert
floating point numbers into strings. By default, Configure
sets this macro to use the first of gconvert, gcvt, or sprintf
that pass sprintf-%g-like behaviour tests. If perl is using
long doubles, the macro uses the first of the following
functions that pass Configure's tests: qgcvt, sprintf (if
Configure knows how to make sprintf format long doubles--see
sPRIgldbl), gconvert, gcvt, and sprintf (casting to double).
The gconvert_preference and gconvert_ld_preference variables
can be used to alter Configure's preferences, for doubles and
long doubles, respectively. If present, they contain a
space-separated list of one or more of the above function
names in the order they should be tried.
d_Gconvert may be set to override Configure with a platform- specific function. If this function expects a double, a different value may need to be set by the uselongdouble.cbu call-back unit so that long doubles can be formatted without loss of precision.
d_getcwd
From d_getcwd.U:
This variable conditionally defines the HAS_GETCWD symbol, which
indicates to the C program that the getcwd() routine is available
to get the current working directory.
d_getespwnam
From d_getespwnam.U:
This variable conditionally defines HAS_GETESPWNAM if getespwnam() is
available to retrieve enchanced (shadow) password entries by name.
d_getfsstat
From d_getfsstat.U:
This variable conditionally defines the HAS_GETFSSTAT symbol, which
indicates to the C program that the getfsstat() routine is available.
d_getgrent
From d_getgrent.U:
This variable conditionally defines the HAS_GETGRENT symbol, which
indicates to the C program that the getgrent() routine is available
for sequential access of the group database.
d_getgrent_r
From d_getgrent_r.U:
This variable conditionally defines the HAS_GETGRENT_R symbol,
which indicates to the C program that the getgrent_r()
routine is available.
d_getgrgid_r
From d_getgrgid_r.U:
This variable conditionally defines the HAS_GETGRGID_R symbol,
which indicates to the C program that the getgrgid_r()
routine is available.
d_getgrnam_r
From d_getgrnam_r.U:
This variable conditionally defines the HAS_GETGRNAM_R symbol,
which indicates to the C program that the getgrnam_r()
routine is available.
d_getgrps
From d_getgrps.U:
This variable conditionally defines the HAS_GETGROUPS symbol, which
indicates to the C program that the getgroups() routine is available
to get the list of process groups.
d_gethbyaddr
From d_gethbyad.U:
This variable conditionally defines the HAS_GETHOSTBYADDR symbol, which
indicates to the C program that the gethostbyaddr() routine is available
to look up hosts by their IP addresses.
d_gethbyname
From d_gethbynm.U:
This variable conditionally defines the HAS_GETHOSTBYNAME symbol, which
indicates to the C program that the gethostbyname() routine is available
to look up host names in some data base or other.
d_gethent
From d_gethent.U:
This variable conditionally defines HAS_GETHOSTENT if gethostent() is
available to look up host names in some data base or another.
d_gethname
From d_gethname.U:
This variable conditionally defines the HAS_GETHOSTNAME symbol, which
indicates to the C program that the gethostname() routine may be
used to derive the host name.
d_gethostbyaddr_r
From d_gethostbyaddr_r.U:
This variable conditionally defines the HAS_GETHOSTBYADDR_R symbol,
which indicates to the C program that the gethostbyaddr_r()
routine is available.
d_gethostbyname_r
From d_gethostbyname_r.U:
This variable conditionally defines the HAS_GETHOSTBYNAME_R symbol,
which indicates to the C program that the gethostbyname_r()
routine is available.
d_gethostent_r
From d_gethostent_r.U:
This variable conditionally defines the HAS_GETHOSTENT_R symbol,
which indicates to the C program that the gethostent_r()
routine is available.
d_gethostprotos
From d_gethostprotos.U:
This variable conditionally defines the HAS_GETHOST_PROTOS symbol,
which indicates to the C program that <netdb.h> supplies
prototypes for the various gethost*() functions.
See also netdbtype.U for probing for various netdb types.
d_getitimer
From d_getitimer.U:
This variable conditionally defines the HAS_GETITIMER symbol, which
indicates to the C program that the getitimer() routine is available.
d_getlogin
From d_getlogin.U:
This variable conditionally defines the HAS_GETLOGIN symbol, which
indicates to the C program that the getlogin() routine is available
to get the login name.
d_getlogin_r
From d_getlogin_r.U:
This variable conditionally defines the HAS_GETLOGIN_R symbol,
which indicates to the C program that the getlogin_r()
routine is available.
d_getmnt
From d_getmnt.U:
This variable conditionally defines the HAS_GETMNT symbol, which
indicates to the C program that the getmnt() routine is available
to retrieve one or more mount info blocks by filename.
d_getmntent
From d_getmntent.U:
This variable conditionally defines the HAS_GETMNTENT symbol, which
indicates to the C program that the getmntent() routine is available
to iterate through mounted files to get their mount info.
d_getnbyaddr
From d_getnbyad.U:
This variable conditionally defines the HAS_GETNETBYADDR symbol, which
indicates to the C program that the getnetbyaddr() routine is available
to look up networks by their IP addresses.
d_getnbyname
From d_getnbynm.U:
This variable conditionally defines the HAS_GETNETBYNAME symbol, which
indicates to the C program that the getnetbyname() routine is available
to look up networks by their names.
d_getnent
From d_getnent.U:
This variable conditionally defines HAS_GETNETENT if getnetent() is
available to look up network names in some data base or another.
d_getnetbyaddr_r
From d_getnetbyaddr_r.U:
This variable conditionally defines the HAS_GETNETBYADDR_R symbol,
which indicates to the C program that the getnetbyaddr_r()
routine is available.
d_getnetbyname_r
From d_getnetbyname_r.U:
This variable conditionally defines the HAS_GETNETBYNAME_R symbol,
which indicates to the C program that the getnetbyname_r()
routine is available.
d_getnetent_r
From d_getnetent_r.U:
This variable conditionally defines the HAS_GETNETENT_R symbol,
which indicates to the C program that the getnetent_r()
routine is available.
d_getnetprotos
From d_getnetprotos.U:
This variable conditionally defines the HAS_GETNET_PROTOS symbol,
which indicates to the C program that <netdb.h> supplies
prototypes for the various getnet*() functions.
See also netdbtype.U for probing for various netdb types.
d_getpagsz
From d_getpagsz.U:
This variable conditionally defines HAS_GETPAGESIZE if getpagesize()
is available to get the system page size.
d_getpbyname
From d_getprotby.U:
This variable conditionally defines the HAS_GETPROTOBYNAME
symbol, which indicates to the C program that the
getprotobyname() routine is available to look up protocols
by their name.
d_getpbynumber
From d_getprotby.U:
This variable conditionally defines the HAS_GETPROTOBYNUMBER
symbol, which indicates to the C program that the
getprotobynumber() routine is available to look up protocols
by their number.
d_getpent
From d_getpent.U:
This variable conditionally defines HAS_GETPROTOENT if getprotoent() is
available to look up protocols in some data base or another.
d_getpgid
From d_getpgid.U:
This variable conditionally defines the HAS_GETPGID symbol, which
indicates to the C program that the getpgid(pid) function
is available to get the process group id.
d_getpgrp2
From d_getpgrp2.U:
This variable conditionally defines the HAS_GETPGRP2 symbol, which
indicates to the C program that the getpgrp2() (as in DG/UX) routine
is available to get the current process group.
d_getpgrp
From d_getpgrp.U:
This variable conditionally defines HAS_GETPGRP if getpgrp() is
available to get the current process group.
d_getppid
From d_getppid.U:
This variable conditionally defines the HAS_GETPPID symbol, which
indicates to the C program that the getppid() routine is available
to get the parent process ID.
d_getprior
From d_getprior.U:
This variable conditionally defines HAS_GETPRIORITY if getpriority()
is available to get a process's priority.
d_getprotobyname_r
From d_getprotobyname_r.U:
This variable conditionally defines the HAS_GETPROTOBYNAME_R symbol,
which indicates to the C program that the getprotobyname_r()
routine is available.
d_getprotobynumber_r
From d_getprotobynumber_r.U:
This variable conditionally defines the HAS_GETPROTOBYNUMBER_R symbol,
which indicates to the C program that the getprotobynumber_r()
routine is available.
d_getprotoent_r
From d_getprotoent_r.U:
This variable conditionally defines the HAS_GETPROTOENT_R symbol,
which indicates to the C program that the getprotoent_r()
routine is available.
d_getprotoprotos
From d_getprotoprotos.U:
This variable conditionally defines the HAS_GETPROTO_PROTOS symbol,
which indicates to the C program that <netdb.h> supplies
prototypes for the various getproto*() functions.
See also netdbtype.U for probing for various netdb types.
d_getprpwnam
From d_getprpwnam.U:
This variable conditionally defines HAS_GETPRPWNAM if getprpwnam() is
available to retrieve protected (shadow) password entries by name.
d_getpwent
From d_getpwent.U:
This variable conditionally defines the HAS_GETPWENT symbol, which
indicates to the C program that the getpwent() routine is available
for sequential access of the passwd database.
d_getpwent_r
From d_getpwent_r.U:
This variable conditionally defines the HAS_GETPWENT_R symbol,
which indicates to the C program that the getpwent_r()
routine is available.
d_getpwnam_r
From d_getpwnam_r.U:
This variable conditionally defines the HAS_GETPWNAM_R symbol,
which indicates to the C program that the getpwnam_r()
routine is available.
d_getpwuid_r
From d_getpwuid_r.U:
This variable conditionally defines the HAS_GETPWUID_R symbol,
which indicates to the C program that the getpwuid_r()
routine is available.
d_getsbyname
From d_getsrvby.U:
This variable conditionally defines the HAS_GETSERVBYNAME
symbol, which indicates to the C program that the
getservbyname() routine is available to look up services
by their name.
d_getsbyport
From d_getsrvby.U:
This variable conditionally defines the HAS_GETSERVBYPORT
symbol, which indicates to the C program that the
getservbyport() routine is available to look up services
by their port.
d_getsent
From d_getsent.U:
This variable conditionally defines HAS_GETSERVENT if getservent() is
available to look up network services in some data base or another.
d_getservbyname_r
From d_getservbyname_r.U:
This variable conditionally defines the HAS_GETSERVBYNAME_R symbol,
which indicates to the C program that the getservbyname_r()
routine is available.
d_getservbyport_r
From d_getservbyport_r.U:
This variable conditionally defines the HAS_GETSERVBYPORT_R symbol,
which indicates to the C program that the getservbyport_r()
routine is available.
d_getservent_r
From d_getservent_r.U:
This variable conditionally defines the HAS_GETSERVENT_R symbol,
which indicates to the C program that the getservent_r()
routine is available.
d_getservprotos
From d_getservprotos.U:
This variable conditionally defines the HAS_GETSERV_PROTOS symbol,
which indicates to the C program that <netdb.h> supplies
prototypes for the various getserv*() functions.
See also netdbtype.U for probing for various netdb types.
d_getspnam
From d_getspnam.U:
This variable conditionally defines HAS_GETSPNAM if getspnam() is
available to retrieve SysV shadow password entries by name.
d_getspnam_r
From d_getspnam_r.U:
This variable conditionally defines the HAS_GETSPNAM_R symbol,
which indicates to the C program that the getspnam_r()
routine is available.
d_gettimeod
From d_ftime.U:
This variable conditionally defines the HAS_GETTIMEOFDAY symbol, which
indicates that the gettimeofday() system call exists (to obtain a
sub-second accuracy clock). You should probably include <sys/resource.h>.
d_gmtime_r
From d_gmtime_r.U:
This variable conditionally defines the HAS_GMTIME_R symbol,
which indicates to the C program that the gmtime_r()
routine is available.
d_gnulibc
From d_gnulibc.U:
Defined if we're dealing with the GNU C Library.
d_grpasswd
From i_grp.U:
This variable conditionally defines GRPASSWD, which indicates
that struct group in <grp.h> contains gr_passwd.
d_hasmntopt
From d_hasmntopt.U:
This variable conditionally defines the HAS_HASMNTOPT symbol, which
indicates to the C program that the hasmntopt() routine is available
to query the mount options of file systems.
d_htonl
From d_htonl.U:
This variable conditionally defines HAS_HTONL if htonl() and its
friends are available to do network order byte swapping.
d_index
From d_strchr.U:
This variable conditionally defines HAS_INDEX if index() and
rindex() are available for string searching.
d_inetaton
From d_inetaton.U:
This variable conditionally defines the HAS_INET_ATON symbol, which
indicates to the C program that the inet_aton() function is available
to parse IP address dotted-quad strings.
d_int64_t
From d_int64_t.U:
This symbol will be defined if the C compiler supports int64_t.
d_isascii
From d_isascii.U:
This variable conditionally defines the HAS_ISASCII constant,
which indicates to the C program that isascii() is available.
d_isfinite
From d_isfinite.U:
This variable conditionally defines the HAS_ISFINITE symbol, which
indicates to the C program that the isfinite() routine is available.
d_isinf
From d_isinf.U:
This variable conditionally defines the HAS_ISINF symbol, which
indicates to the C program that the isinf() routine is available.
d_isnan
From d_isnan.U:
This variable conditionally defines the HAS_ISNAN symbol, which
indicates to the C program that the isnan() routine is available.
d_isnanl
From d_isnanl.U:
This variable conditionally defines the HAS_ISNANL symbol, which
indicates to the C program that the isnanl() routine is available.
d_killpg
From d_killpg.U:
This variable conditionally defines the HAS_KILLPG symbol, which
indicates to the C program that the killpg() routine is available
to kill process groups.
d_lchown
From d_lchown.U:
This variable conditionally defines the HAS_LCHOWN symbol, which
indicates to the C program that the lchown() routine is available
to operate on a symbolic link (instead of following the link).
d_ldbl_dig
From d_ldbl_dig.U:
This variable conditionally defines d_ldbl_dig if this system's
header files provide LDBL_DIG, which is the number of significant
digits in a long double precision number.
d_link
From d_link.U:
This variable conditionally defines HAS_LINK if link() is
available to create hard links.
d_localtime_r
From d_localtime_r.U:
This variable conditionally defines the HAS_LOCALTIME_R symbol,
which indicates to the C program that the localtime_r()
routine is available.
d_locconv
From d_locconv.U:
This variable conditionally defines HAS_LOCALECONV if localeconv() is
available for numeric and monetary formatting conventions.
d_lockf
From d_lockf.U:
This variable conditionally defines HAS_LOCKF if lockf() is
available to do file locking.
d_longdbl
From d_longdbl.U:
This variable conditionally defines HAS_LONG_DOUBLE if
the long double type is supported.
d_longlong
From d_longlong.U:
This variable conditionally defines HAS_LONG_LONG if
the long long type is supported.
d_lseekproto
From d_lseekproto.U:
This variable conditionally defines the HAS_LSEEK_PROTO symbol,
which indicates to the C program that the system provides
a prototype for the lseek() function. Otherwise, it is
up to the program to supply one.
d_lstat
From d_lstat.U:
This variable conditionally defines HAS_LSTAT if lstat() is
available to do file stats on symbolic links.
d_madvise
From d_madvise.U:
This variable conditionally defines HAS_MADVISE if madvise() is
available to map a file into memory.
d_mblen
From d_mblen.U:
This variable conditionally defines the HAS_MBLEN symbol, which
indicates to the C program that the mblen() routine is available
to find the number of bytes in a multibye character.
d_mbstowcs
From d_mbstowcs.U:
This variable conditionally defines the HAS_MBSTOWCS symbol, which
indicates to the C program that the mbstowcs() routine is available
to convert a multibyte string into a wide character string.
d_mbtowc
From d_mbtowc.U:
This variable conditionally defines the HAS_MBTOWC symbol, which
indicates to the C program that the mbtowc() routine is available
to convert multibyte to a wide character.
d_memchr
From d_memchr.U:
This variable conditionally defines the HAS_MEMCHR symbol, which
indicates to the C program that the memchr() routine is available
to locate characters within a C string.
d_memcmp
From d_memcmp.U:
This variable conditionally defines the HAS_MEMCMP symbol, which
indicates to the C program that the memcmp() routine is available
to compare blocks of memory.
d_memcpy
From d_memcpy.U:
This variable conditionally defines the HAS_MEMCPY symbol, which
indicates to the C program that the memcpy() routine is available
to copy blocks of memory.
d_memmove
From d_memmove.U:
This variable conditionally defines the HAS_MEMMOVE symbol, which
indicates to the C program that the memmove() routine is available
to copy potentatially overlapping blocks of memory.
d_memset
From d_memset.U:
This variable conditionally defines the HAS_MEMSET symbol, which
indicates to the C program that the memset() routine is available
to set blocks of memory.
d_mkdir
From d_mkdir.U:
This variable conditionally defines the HAS_MKDIR symbol, which
indicates to the C program that the mkdir() routine is available
to create directories..
d_mkdtemp
From d_mkdtemp.U:
This variable conditionally defines the HAS_MKDTEMP symbol, which
indicates to the C program that the mkdtemp() routine is available
to exclusively create a uniquely named temporary directory.
d_mkfifo
From d_mkfifo.U:
This variable conditionally defines the HAS_MKFIFO symbol, which
indicates to the C program that the mkfifo() routine is available.
d_mkstemp
From d_mkstemp.U:
This variable conditionally defines the HAS_MKSTEMP symbol, which
indicates to the C program that the mkstemp() routine is available
to exclusively create and open a uniquely named temporary file.
d_mkstemps
From d_mkstemps.U:
This variable conditionally defines the HAS_MKSTEMPS symbol, which
indicates to the C program that the mkstemps() routine is available
to exclusively create and open a uniquely named (with a suffix)
temporary file.
d_mktime
From d_mktime.U:
This variable conditionally defines the HAS_MKTIME symbol, which
indicates to the C program that the mktime() routine is available.
d_mmap
From d_mmap.U:
This variable conditionally defines HAS_MMAP if mmap() is
available to map a file into memory.
d_modfl
From d_modfl.U:
This variable conditionally defines the HAS_MODFL symbol, which
indicates to the C program that the modfl() routine is available.
d_modfl_pow32_bug
From d_modfl.U:
This variable conditionally defines the HAS_MODFL_POW32_BUG symbol, which indicates that modfl() is broken for long doubles >= pow(2, 32). For example from 4294967303.150000 one would get 4294967302.000000 and 1.150000. The bug has been seen in certain versions of glibc, release 2.2.2 is known to be okay.
d_mprotect
From d_mprotect.U:
This variable conditionally defines HAS_MPROTECT if mprotect() is
available to modify the access protection of a memory mapped file.
d_msg
From d_msg.U:
This variable conditionally defines the HAS_MSG symbol, which
indicates that the entire msg*(2) library is present.
d_msg_ctrunc
From d_socket.U:
This variable conditionally defines the HAS_MSG_CTRUNC symbol,
which indicates that the MSG_CTRUNC is available. #ifdef is
not enough because it may be an enum, glibc has been known to do this.
d_msg_dontroute
From d_socket.U:
This variable conditionally defines the HAS_MSG_DONTROUTE symbol,
which indicates that the MSG_DONTROUTE is available. #ifdef is
not enough because it may be an enum, glibc has been known to do this.
d_msg_oob
From d_socket.U:
This variable conditionally defines the HAS_MSG_OOB symbol,
which indicates that the MSG_OOB is available. #ifdef is
not enough because it may be an enum, glibc has been known to do this.
d_msg_peek
From d_socket.U:
This variable conditionally defines the HAS_MSG_PEEK symbol,
which indicates that the MSG_PEEK is available. #ifdef is
not enough because it may be an enum, glibc has been known to do this.
d_msg_proxy
From d_socket.U:
This variable conditionally defines the HAS_MSG_PROXY symbol,
which indicates that the MSG_PROXY is available. #ifdef is
not enough because it may be an enum, glibc has been known to do this.
d_msgctl
From d_msgctl.U:
This variable conditionally defines the HAS_MSGCTL symbol, which
indicates to the C program that the msgctl() routine is available.
d_msgget
From d_msgget.U:
This variable conditionally defines the HAS_MSGGET symbol, which
indicates to the C program that the msgget() routine is available.
d_msghdr_s
From d_msghdr_s.U:
This variable conditionally defines the HAS_STRUCT_MSGHDR symbol,
which indicates that the struct msghdr is supported.
d_msgrcv
From d_msgrcv.U:
This variable conditionally defines the HAS_MSGRCV symbol, which
indicates to the C program that the msgrcv() routine is available.
d_msgsnd
From d_msgsnd.U:
This variable conditionally defines the HAS_MSGSND symbol, which
indicates to the C program that the msgsnd() routine is available.
d_msync
From d_msync.U:
This variable conditionally defines HAS_MSYNC if msync() is
available to synchronize a mapped file.
d_munmap
From d_munmap.U:
This variable conditionally defines HAS_MUNMAP if munmap() is
available to unmap a region mapped by mmap().
d_mymalloc
From mallocsrc.U:
This variable conditionally defines MYMALLOC in case other parts
of the source want to take special action if MYMALLOC is used.
This may include different sorts of profiling or error detection.
d_nice
From d_nice.U:
This variable conditionally defines the HAS_NICE symbol, which
indicates to the C program that the nice() routine is available.
d_nl_langinfo
From d_nl_langinfo.U:
This variable conditionally defines the HAS_NL_LANGINFO symbol, which
indicates to the C program that the nl_langinfo() routine is available.
d_nv_preserves_uv
From perlxv.U:
This variable indicates whether a variable of type nvtype can preserve all the bits a variable of type uvtype.
d_off64_t
From d_off64_t.U:
This symbol will be defined if the C compiler supports off64_t.
d_old_pthread_create_joinable
From d_pthrattrj.U:
This variable conditionally defines pthread_create_joinable.
undef if pthread.h defines PTHREAD_CREATE_JOINABLE.
d_oldpthreads
From usethreads.U:
This variable conditionally defines the OLD_PTHREADS_API symbol,
and indicates that Perl should be built to use the old
draft POSIX threads API. This is only potentially meaningful if
usethreads is set.
d_oldsock
From d_socket.U:
This variable conditionally defines the OLDSOCKET symbol, which
indicates that the BSD socket interface is based on 4.1c and not 4.2.
d_open3
From d_open3.U:
This variable conditionally defines the HAS_OPEN3 manifest constant, which indicates to the C program that the 3 argument version of the open(2) function is available.
d_pathconf
From d_pathconf.U:
This variable conditionally defines the HAS_PATHCONF symbol, which
indicates to the C program that the pathconf() routine is available
to determine file-system related limits and options associated
with a given filename.
d_pause
From d_pause.U:
This variable conditionally defines the HAS_PAUSE symbol, which
indicates to the C program that the pause() routine is available
to suspend a process until a signal is received.
d_perl_otherlibdirs
From otherlibdirs.U:
This variable conditionally defines PERL_OTHERLIBDIRS, which
contains a colon-separated set of paths for the perl binary to
include in @INC. See also otherlibdirs.
d_phostname
From d_gethname.U:
This variable conditionally defines the HAS_PHOSTNAME symbol, which
contains the shell command which, when fed to popen(), may be
used to derive the host name.
d_pipe
From d_pipe.U:
This variable conditionally defines the HAS_PIPE symbol, which
indicates to the C program that the pipe() routine is available
to create an inter-process channel.
d_poll
From d_poll.U:
This variable conditionally defines the HAS_POLL symbol, which
indicates to the C program that the poll() routine is available
to poll active file descriptors.
d_portable
From d_portable.U:
This variable conditionally defines the PORTABLE symbol, which
indicates to the C program that it should not assume that it is
running on the machine it was compiled on.
d_PRId64
From quadfio.U:
This variable conditionally defines the PERL_PRId64 symbol, which indiciates that stdio has a symbol to print 64-bit decimal numbers.
d_PRIeldbl
From longdblfio.U:
This variable conditionally defines the PERL_PRIfldbl symbol, which indiciates that stdio has a symbol to print long doubles.
d_PRIEUldbl
From longdblfio.U:
This variable conditionally defines the PERL_PRIfldbl symbol, which
indiciates that stdio has a symbol to print long doubles.
The U in the name is to separate this from d_PRIeldbl so that even
case-blind systems can see the difference.
d_PRIfldbl
From longdblfio.U:
This variable conditionally defines the PERL_PRIfldbl symbol, which indiciates that stdio has a symbol to print long doubles.
d_PRIFUldbl
From longdblfio.U:
This variable conditionally defines the PERL_PRIfldbl symbol, which
indiciates that stdio has a symbol to print long doubles.
The U in the name is to separate this from d_PRIfldbl so that even
case-blind systems can see the difference.
d_PRIgldbl
From longdblfio.U:
This variable conditionally defines the PERL_PRIfldbl symbol, which indiciates that stdio has a symbol to print long doubles.
d_PRIGUldbl
From longdblfio.U:
This variable conditionally defines the PERL_PRIfldbl symbol, which
indiciates that stdio has a symbol to print long doubles.
The U in the name is to separate this from d_PRIgldbl so that even
case-blind systems can see the difference.
d_PRIi64
From quadfio.U:
This variable conditionally defines the PERL_PRIi64 symbol, which indiciates that stdio has a symbol to print 64-bit decimal numbers.
d_PRIo64
From quadfio.U:
This variable conditionally defines the PERL_PRIo64 symbol, which indiciates that stdio has a symbol to print 64-bit octal numbers.
d_PRIu64
From quadfio.U:
This variable conditionally defines the PERL_PRIu64 symbol, which indiciates that stdio has a symbol to print 64-bit unsigned decimal numbers.
d_PRIx64
From quadfio.U:
This variable conditionally defines the PERL_PRIx64 symbol, which indiciates that stdio has a symbol to print 64-bit hexadecimal numbers.
d_PRIXU64
From quadfio.U:
This variable conditionally defines the PERL_PRIXU64 symbol, which
indiciates that stdio has a symbol to print 64-bit hExADECimAl numbers.
The U in the name is to separate this from d_PRIx64 so that even
case-blind systems can see the difference.
d_procselfexe
From d_procselfexe.U:
Defined if $procselfexe is symlink to the absolute pathname of the executing program.
d_pthread_atfork
From d_pthread_atfork.U:
This variable conditionally defines the HAS_PTHREAD_ATFORK symbol,
which indicates to the C program that the pthread_atfork()
routine is available.
d_pthread_yield
From d_pthread_y.U:
This variable conditionally defines the HAS_PTHREAD_YIELD
symbol if the pthread_yield routine is available to yield
the execution of the current thread.
d_pwage
From i_pwd.U:
This variable conditionally defines PWAGE, which indicates
that struct passwd contains pw_age.
d_pwchange
From i_pwd.U:
This variable conditionally defines PWCHANGE, which indicates
that struct passwd contains pw_change.
d_pwclass
From i_pwd.U:
This variable conditionally defines PWCLASS, which indicates
that struct passwd contains pw_class.
d_pwcomment
From i_pwd.U:
This variable conditionally defines PWCOMMENT, which indicates
that struct passwd contains pw_comment.
d_pwexpire
From i_pwd.U:
This variable conditionally defines PWEXPIRE, which indicates
that struct passwd contains pw_expire.
d_pwgecos
From i_pwd.U:
This variable conditionally defines PWGECOS, which indicates
that struct passwd contains pw_gecos.
d_pwpasswd
From i_pwd.U:
This variable conditionally defines PWPASSWD, which indicates
that struct passwd contains pw_passwd.
d_pwquota
From i_pwd.U:
This variable conditionally defines PWQUOTA, which indicates
that struct passwd contains pw_quota.
d_qgcvt
From d_qgcvt.U:
This variable conditionally defines the HAS_QGCVT symbol, which
indicates to the C program that the qgcvt() routine is available.
d_quad
From quadtype.U:
This variable, if defined, tells that there's a 64-bit integer type, quadtype.
d_random_r
From d_random_r.U:
This variable conditionally defines the HAS_RANDOM_R symbol,
which indicates to the C program that the random_r()
routine is available.
d_readdir64_r
From d_readdir64_r.U:
This variable conditionally defines the HAS_READDIR64_R symbol, which indicates to the C program that the readdir64_r() routine is available.
d_readdir
From d_readdir.U:
This variable conditionally defines HAS_READDIR if readdir() is
available to read directory entries.
d_readdir_r
From d_readdir_r.U:
This variable conditionally defines the HAS_READDIR_R symbol,
which indicates to the C program that the readdir_r()
routine is available.
d_readlink
From d_readlink.U:
This variable conditionally defines the HAS_READLINK symbol, which
indicates to the C program that the readlink() routine is available
to read the value of a symbolic link.
d_readv
From d_readv.U:
This variable conditionally defines the HAS_READV symbol, which
indicates to the C program that the readv() routine is available.
d_recvmsg
From d_recvmsg.U:
This variable conditionally defines the HAS_RECVMSG symbol, which
indicates to the C program that the recvmsg() routine is available.
d_rename
From d_rename.U:
This variable conditionally defines the HAS_RENAME symbol, which
indicates to the C program that the rename() routine is available
to rename files.
d_rewinddir
From d_readdir.U:
This variable conditionally defines HAS_REWINDDIR if rewinddir() is
available.
d_rmdir
From d_rmdir.U:
This variable conditionally defines HAS_RMDIR if rmdir() is
available to remove directories.
d_safebcpy
From d_safebcpy.U:
This variable conditionally defines the HAS_SAFE_BCOPY symbol if
the bcopy() routine can do overlapping copies. Normally, you
should probably use memmove().
d_safemcpy
From d_safemcpy.U:
This variable conditionally defines the HAS_SAFE_MEMCPY symbol if
the memcpy() routine can do overlapping copies.
For overlapping copies, memmove() should be used, if available.
d_sanemcmp
From d_sanemcmp.U:
This variable conditionally defines the HAS_SANE_MEMCMP symbol if
the memcpy() routine is available and can be used to compare relative
magnitudes of chars with their high bits set.
d_sbrkproto
From d_sbrkproto.U:
This variable conditionally defines the HAS_SBRK_PROTO symbol,
which indicates to the C program that the system provides
a prototype for the sbrk() function. Otherwise, it is
up to the program to supply one.
d_sched_yield
From d_pthread_y.U:
This variable conditionally defines the HAS_SCHED_YIELD
symbol if the sched_yield routine is available to yield
the execution of the current thread.
d_scm_rights
From d_socket.U:
This variable conditionally defines the HAS_SCM_RIGHTS symbol,
which indicates that the SCM_RIGHTS is available. #ifdef is
not enough because it may be an enum, glibc has been known to do this.
d_SCNfldbl
From longdblfio.U:
This variable conditionally defines the PERL_PRIfldbl symbol, which indiciates that stdio has a symbol to scan long doubles.
d_seekdir
From d_readdir.U:
This variable conditionally defines HAS_SEEKDIR if seekdir() is
available.
d_select
From d_select.U:
This variable conditionally defines HAS_SELECT if select() is
available to select active file descriptors. A <sys/time.h>
inclusion may be necessary for the timeout field.
d_sem
From d_sem.U:
This variable conditionally defines the HAS_SEM symbol, which
indicates that the entire sem*(2) library is present.
d_semctl
From d_semctl.U:
This variable conditionally defines the HAS_SEMCTL symbol, which
indicates to the C program that the semctl() routine is available.
d_semctl_semid_ds
From d_union_semun.U:
This variable conditionally defines USE_SEMCTL_SEMID_DS, which
indicates that struct semid_ds * is to be used for semctl IPC_STAT.
d_semctl_semun
From d_union_semun.U:
This variable conditionally defines USE_SEMCTL_SEMUN, which
indicates that union semun is to be used for semctl IPC_STAT.
d_semget
From d_semget.U:
This variable conditionally defines the HAS_SEMGET symbol, which
indicates to the C program that the semget() routine is available.
d_semop
From d_semop.U:
This variable conditionally defines the HAS_SEMOP symbol, which
indicates to the C program that the semop() routine is available.
d_sendmsg
From d_sendmsg.U:
This variable conditionally defines the HAS_SENDMSG symbol, which
indicates to the C program that the sendmsg() routine is available.
d_setegid
From d_setegid.U:
This variable conditionally defines the HAS_SETEGID symbol, which
indicates to the C program that the setegid() routine is available
to change the effective gid of the current program.
d_seteuid
From d_seteuid.U:
This variable conditionally defines the HAS_SETEUID symbol, which
indicates to the C program that the seteuid() routine is available
to change the effective uid of the current program.
d_setgrent
From d_setgrent.U:
This variable conditionally defines the HAS_SETGRENT symbol, which
indicates to the C program that the setgrent() routine is available
for initializing sequential access to the group database.
d_setgrent_r
From d_setgrent_r.U:
This variable conditionally defines the HAS_SETGRENT_R symbol,
which indicates to the C program that the setgrent_r()
routine is available.
d_setgrps
From d_setgrps.U:
This variable conditionally defines the HAS_SETGROUPS symbol, which
indicates to the C program that the setgroups() routine is available
to set the list of process groups.
d_sethent
From d_sethent.U:
This variable conditionally defines HAS_SETHOSTENT if sethostent() is
available.
d_sethostent_r
From d_sethostent_r.U:
This variable conditionally defines the HAS_SETHOSTENT_R symbol,
which indicates to the C program that the sethostent_r()
routine is available.
d_setitimer
From d_setitimer.U:
This variable conditionally defines the HAS_SETITIMER symbol, which
indicates to the C program that the setitimer() routine is available.
d_setlinebuf
From d_setlnbuf.U:
This variable conditionally defines the HAS_SETLINEBUF symbol, which
indicates to the C program that the setlinebuf() routine is available
to change stderr or stdout from block-buffered or unbuffered to a
line-buffered mode.
d_setlocale
From d_setlocale.U:
This variable conditionally defines HAS_SETLOCALE if setlocale() is
available to handle locale-specific ctype implementations.
d_setlocale_r
From d_setlocale_r.U:
This variable conditionally defines the HAS_SETLOCALE_R symbol,
which indicates to the C program that the setlocale_r()
routine is available.
d_setnent
From d_setnent.U:
This variable conditionally defines HAS_SETNETENT if setnetent() is
available.
d_setnetent_r
From d_setnetent_r.U:
This variable conditionally defines the HAS_SETNETENT_R symbol,
which indicates to the C program that the setnetent_r()
routine is available.
d_setpent
From d_setpent.U:
This variable conditionally defines HAS_SETPROTOENT if setprotoent() is
available.
d_setpgid
From d_setpgid.U:
This variable conditionally defines the HAS_SETPGID symbol if the
setpgid(pid, gpid) function is available to set process group ID.
d_setpgrp2
From d_setpgrp2.U:
This variable conditionally defines the HAS_SETPGRP2 symbol, which
indicates to the C program that the setpgrp2() (as in DG/UX) routine
is available to set the current process group.
d_setpgrp
From d_setpgrp.U:
This variable conditionally defines HAS_SETPGRP if setpgrp() is
available to set the current process group.
d_setprior
From d_setprior.U:
This variable conditionally defines HAS_SETPRIORITY if setpriority()
is available to set a process's priority.
d_setproctitle
From d_setproctitle.U:
This variable conditionally defines the HAS_SETPROCTITLE symbol,
which indicates to the C program that the setproctitle() routine
is available.
d_setprotoent_r
From d_setprotoent_r.U:
This variable conditionally defines the HAS_SETPROTOENT_R symbol,
which indicates to the C program that the setprotoent_r()
routine is available.
d_setpwent
From d_setpwent.U:
This variable conditionally defines the HAS_SETPWENT symbol, which
indicates to the C program that the setpwent() routine is available
for initializing sequential access to the passwd database.
d_setpwent_r
From d_setpwent_r.U:
This variable conditionally defines the HAS_SETPWENT_R symbol,
which indicates to the C program that the setpwent_r()
routine is available.
d_setregid
From d_setregid.U:
This variable conditionally defines HAS_SETREGID if setregid() is
available to change the real and effective gid of the current
process.
d_setresgid
From d_setregid.U:
This variable conditionally defines HAS_SETRESGID if setresgid() is
available to change the real, effective and saved gid of the current
process.
d_setresuid
From d_setreuid.U:
This variable conditionally defines HAS_SETREUID if setresuid() is
available to change the real, effective and saved uid of the current
process.
d_setreuid
From d_setreuid.U:
This variable conditionally defines HAS_SETREUID if setreuid() is
available to change the real and effective uid of the current
process.
d_setrgid
From d_setrgid.U:
This variable conditionally defines the HAS_SETRGID symbol, which
indicates to the C program that the setrgid() routine is available
to change the real gid of the current program.
d_setruid
From d_setruid.U:
This variable conditionally defines the HAS_SETRUID symbol, which
indicates to the C program that the setruid() routine is available
to change the real uid of the current program.
d_setsent
From d_setsent.U:
This variable conditionally defines HAS_SETSERVENT if setservent() is
available.
d_setservent_r
From d_setservent_r.U:
This variable conditionally defines the HAS_SETSERVENT_R symbol,
which indicates to the C program that the setservent_r()
routine is available.
d_setsid
From d_setsid.U:
This variable conditionally defines HAS_SETSID if setsid() is
available to set the process group ID.
d_setvbuf
From d_setvbuf.U:
This variable conditionally defines the HAS_SETVBUF symbol, which
indicates to the C program that the setvbuf() routine is available
to change buffering on an open stdio stream.
d_sfio
From d_sfio.U:
This variable conditionally defines the USE_SFIO symbol,
and indicates whether sfio is available (and should be used).
d_shm
From d_shm.U:
This variable conditionally defines the HAS_SHM symbol, which
indicates that the entire shm*(2) library is present.
d_shmat
From d_shmat.U:
This variable conditionally defines the HAS_SHMAT symbol, which
indicates to the C program that the shmat() routine is available.
d_shmatprototype
From d_shmat.U:
This variable conditionally defines the HAS_SHMAT_PROTOTYPE
symbol, which indicates that sys/shm.h has a prototype for
shmat.
d_shmctl
From d_shmctl.U:
This variable conditionally defines the HAS_SHMCTL symbol, which
indicates to the C program that the shmctl() routine is available.
d_shmdt
From d_shmdt.U:
This variable conditionally defines the HAS_SHMDT symbol, which
indicates to the C program that the shmdt() routine is available.
d_shmget
From d_shmget.U:
This variable conditionally defines the HAS_SHMGET symbol, which
indicates to the C program that the shmget() routine is available.
d_sigaction
From d_sigaction.U:
This variable conditionally defines the HAS_SIGACTION symbol, which
indicates that the Vr4 sigaction() routine is available.
d_sigprocmask
From d_sigprocmask.U:
This variable conditionally defines HAS_SIGPROCMASK
if sigprocmask() is available to examine or change the signal mask
of the calling process.
d_sigsetjmp
From d_sigsetjmp.U:
This variable conditionally defines the HAS_SIGSETJMP symbol,
which indicates that the sigsetjmp() routine is available to
call setjmp() and optionally save the process's signal mask.
d_sockatmark
From d_sockatmark.U:
This variable conditionally defines the HAS_SOCKATMARK symbol, which
indicates to the C program that the sockatmark() routine is available.
d_sockatmarkproto
From d_sockatmarkproto.U:
This variable conditionally defines the HAS_SOCKATMARK_PROTO symbol,
which indicates to the C program that the system provides
a prototype for the sockatmark() function. Otherwise, it is
up to the program to supply one.
d_socket
From d_socket.U:
This variable conditionally defines HAS_SOCKET, which indicates
that the BSD socket interface is supported.
d_socklen_t
From d_socklen_t.U:
This symbol will be defined if the C compiler supports socklen_t.
d_sockpair
From d_socket.U:
This variable conditionally defines the HAS_SOCKETPAIR symbol, which
indicates that the BSD socketpair() is supported.
d_socks5_init
From d_socks5_init.U:
This variable conditionally defines the HAS_SOCKS5_INIT symbol, which indicates to the C program that the socks5_init() routine is available.
d_sqrtl
From d_sqrtl.U:
This variable conditionally defines the HAS_SQRTL symbol, which
indicates to the C program that the sqrtl() routine is available.
d_srand48_r
From d_srand48_r.U:
This variable conditionally defines the HAS_SRAND48_R symbol, which indicates to the C program that the srand48_r() routine is available.
d_srandom_r
From d_srandom_r.U:
This variable conditionally defines the HAS_SRANDOM_R symbol,
which indicates to the C program that the srandom_r()
routine is available.
d_sresgproto
From d_sresgproto.U:
This variable conditionally defines the HAS_SETRESGID_PROTO symbol,
which indicates to the C program that the system provides
a prototype for the setresgid() function. Otherwise, it is
up to the program to supply one.
d_sresuproto
From d_sresuproto.U:
This variable conditionally defines the HAS_SETRESUID_PROTO symbol,
which indicates to the C program that the system provides
a prototype for the setresuid() function. Otherwise, it is
up to the program to supply one.
d_statblks
From d_statblks.U:
This variable conditionally defines USE_STAT_BLOCKS
if this system has a stat structure declaring
st_blksize and st_blocks.
d_statfs_f_flags
From d_statfs_f_flags.U:
This variable conditionally defines the HAS_STRUCT_STATFS_F_FLAGS
symbol, which indicates to struct statfs from has f_flags member.
This kind of struct statfs is coming from sys/mount.h (BSD),
not from sys/statfs.h (SYSV).
d_statfs_s
From d_statfs_s.U:
This variable conditionally defines the HAS_STRUCT_STATFS symbol,
which indicates that the struct statfs is supported.
d_statvfs
From d_statvfs.U:
This variable conditionally defines the HAS_STATVFS symbol, which
indicates to the C program that the statvfs() routine is available.
d_stdio_cnt_lval
From d_stdstdio.U:
This variable conditionally defines STDIO_CNT_LVALUE if the
FILE_cnt macro can be used as an lvalue.
d_stdio_ptr_lval
From d_stdstdio.U:
This variable conditionally defines STDIO_PTR_LVALUE if the
FILE_ptr macro can be used as an lvalue.
d_stdio_ptr_lval_nochange_cnt
From d_stdstdio.U:
This symbol is defined if using the FILE_ptr macro as an lvalue
to increase the pointer by n leaves File_cnt(fp) unchanged.
d_stdio_ptr_lval_sets_cnt
From d_stdstdio.U:
This symbol is defined if using the FILE_ptr macro as an lvalue
to increase the pointer by n has the side effect of decreasing the
value of File_cnt(fp) by n.
d_stdio_stream_array
From stdio_streams.U:
This variable tells whether there is an array holding the stdio streams.
d_stdiobase
From d_stdstdio.U:
This variable conditionally defines USE_STDIO_BASE if this system
has a FILE structure declaring a usable _base field (or equivalent)
in stdio.h.
d_stdstdio
From d_stdstdio.U:
This variable conditionally defines USE_STDIO_PTR if this system
has a FILE structure declaring usable _ptr and _cnt fields (or
equivalent) in stdio.h.
d_strchr
From d_strchr.U:
This variable conditionally defines HAS_STRCHR if strchr() and
strrchr() are available for string searching.
d_strcoll
From d_strcoll.U:
This variable conditionally defines HAS_STRCOLL if strcoll() is
available to compare strings using collating information.
d_strctcpy
From d_strctcpy.U:
This variable conditionally defines the USE_STRUCT_COPY symbol, which
indicates to the C program that this C compiler knows how to copy
structures.
d_strerrm
From d_strerror.U:
This variable holds what Strerrr is defined as to translate an error
code condition into an error message string. It could be strerror
or a more complex macro emulating strrror with sys_errlist[], or the
unknown string when both strerror and sys_errlist are missing.
d_strerror
From d_strerror.U:
This variable conditionally defines HAS_STRERROR if strerror() is
available to translate error numbers to strings.
d_strerror_r
From d_strerror_r.U:
This variable conditionally defines the HAS_STRERROR_R symbol,
which indicates to the C program that the strerror_r()
routine is available.
d_strftime
From d_strftime.U:
This variable conditionally defines the HAS_STRFTIME symbol, which
indicates to the C program that the strftime() routine is available.
d_strtod
From d_strtod.U:
This variable conditionally defines the HAS_STRTOD symbol, which
indicates to the C program that the strtod() routine is available
to provide better numeric string conversion than atof().
d_strtol
From d_strtol.U:
This variable conditionally defines the HAS_STRTOL symbol, which
indicates to the C program that the strtol() routine is available
to provide better numeric string conversion than atoi() and friends.
d_strtold
From d_strtold.U:
This variable conditionally defines the HAS_STRTOLD symbol, which
indicates to the C program that the strtold() routine is available.
d_strtoll
From d_strtoll.U:
This variable conditionally defines the HAS_STRTOLL symbol, which
indicates to the C program that the strtoll() routine is available.
d_strtoq
From d_strtoq.U:
This variable conditionally defines the HAS_STRTOQ symbol, which
indicates to the C program that the strtoq() routine is available.
d_strtoul
From d_strtoul.U:
This variable conditionally defines the HAS_STRTOUL symbol, which
indicates to the C program that the strtoul() routine is available
to provide conversion of strings to unsigned long.
d_strtoull
From d_strtoull.U:
This variable conditionally defines the HAS_STRTOULL symbol, which
indicates to the C program that the strtoull() routine is available.
d_strtouq
From d_strtouq.U:
This variable conditionally defines the HAS_STRTOUQ symbol, which
indicates to the C program that the strtouq() routine is available.
d_strxfrm
From d_strxfrm.U:
This variable conditionally defines HAS_STRXFRM if strxfrm() is
available to transform strings.
d_suidsafe
From d_dosuid.U:
This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
if setuid scripts can be secure. This test looks in /dev/fd/.
d_symlink
From d_symlink.U:
This variable conditionally defines the HAS_SYMLINK symbol, which
indicates to the C program that the symlink() routine is available
to create symbolic links.
d_syscall
From d_syscall.U:
This variable conditionally defines HAS_SYSCALL if syscall() is
available call arbitrary system calls.
d_syscallproto
From d_syscallproto.U:
This variable conditionally defines the HAS_SYSCALL_PROTO symbol,
which indicates to the C program that the system provides
a prototype for the syscall() function. Otherwise, it is
up to the program to supply one.
d_sysconf
From d_sysconf.U:
This variable conditionally defines the HAS_SYSCONF symbol, which
indicates to the C program that the sysconf() routine is available
to determine system related limits and options.
d_sysernlst
From d_strerror.U:
This variable conditionally defines HAS_SYS_ERRNOLIST if sys_errnolist[]
is available to translate error numbers to the symbolic name.
d_syserrlst
From d_strerror.U:
This variable conditionally defines HAS_SYS_ERRLIST if sys_errlist[] is
available to translate error numbers to strings.
d_system
From d_system.U:
This variable conditionally defines HAS_SYSTEM if system() is
available to issue a shell command.
d_tcgetpgrp
From d_tcgtpgrp.U:
This variable conditionally defines the HAS_TCGETPGRP symbol, which
indicates to the C program that the tcgetpgrp() routine is available.
to get foreground process group ID.
d_tcsetpgrp
From d_tcstpgrp.U:
This variable conditionally defines the HAS_TCSETPGRP symbol, which
indicates to the C program that the tcsetpgrp() routine is available
to set foreground process group ID.
d_telldir
From d_readdir.U:
This variable conditionally defines HAS_TELLDIR if telldir() is
available.
d_telldirproto
From d_telldirproto.U:
This variable conditionally defines the HAS_TELLDIR_PROTO symbol,
which indicates to the C program that the system provides
a prototype for the telldir() function. Otherwise, it is
up to the program to supply one.
d_time
From d_time.U:
This variable conditionally defines the HAS_TIME symbol, which indicates
that the time() routine exists. The time() routine is normaly
provided on UNIX systems.
d_times
From d_times.U:
This variable conditionally defines the HAS_TIMES symbol, which indicates
that the times() routine exists. The times() routine is normaly
provided on UNIX systems. You may have to include <sys/times.h>.
d_tm_tm_gmtoff
From i_time.U:
This variable conditionally defines HAS_TM_TM_GMTOFF, which indicates
indicates to the C program that the struct tm has the tm_gmtoff field.
d_tm_tm_zone
From i_time.U:
This variable conditionally defines HAS_TM_TM_ZONE, which indicates
indicates to the C program that the struct tm has the tm_zone field.
d_tmpnam_r
From d_tmpnam_r.U:
This variable conditionally defines the HAS_TMPNAM_R symbol,
which indicates to the C program that the tmpnam_r()
routine is available.
d_truncate
From d_truncate.U:
This variable conditionally defines HAS_TRUNCATE if truncate() is
available to truncate files.
d_ttyname_r
From d_ttyname_r.U:
This variable conditionally defines the HAS_TTYNAME_R symbol,
which indicates to the C program that the ttyname_r()
routine is available.
d_tzname
From d_tzname.U:
This variable conditionally defines HAS_TZNAME if tzname[] is
available to access timezone names.
d_u32align
From d_u32align.U:
This variable tells whether you must access character data through U32-aligned pointers.
d_ualarm
From d_ualarm.U:
This variable conditionally defines the HAS_UALARM symbol, which
indicates to the C program that the ualarm() routine is available.
d_umask
From d_umask.U:
This variable conditionally defines the HAS_UMASK symbol, which
indicates to the C program that the umask() routine is available.
to set and get the value of the file creation mask.
d_uname
From d_gethname.U:
This variable conditionally defines the HAS_UNAME symbol, which
indicates to the C program that the uname() routine may be
used to derive the host name.
d_union_semun
From d_union_semun.U:
This variable conditionally defines HAS_UNION_SEMUN if the
union semun is defined by including <sys/sem.h>.
d_unordered
From d_unordered.U:
This variable conditionally defines the HAS_UNORDERED symbol, which
indicates to the C program that the unordered() routine is available.
d_usleep
From d_usleep.U:
This variable conditionally defines HAS_USLEEP if usleep() is
available to do high granularity sleeps.
d_usleepproto
From d_usleepproto.U:
This variable conditionally defines the HAS_USLEEP_PROTO symbol,
which indicates to the C program that the system provides
a prototype for the usleep() function. Otherwise, it is
up to the program to supply one.
d_ustat
From d_ustat.U:
This variable conditionally defines HAS_USTAT if ustat() is
available to query file system statistics by dev_t.
d_vendorarch
From vendorarch.U:
This variable conditionally defined PERL_VENDORARCH.
d_vendorbin
From vendorbin.U:
This variable conditionally defines PERL_VENDORBIN.
d_vendorlib
From vendorlib.U:
This variable conditionally defines PERL_VENDORLIB.
d_vfork
From d_vfork.U:
This variable conditionally defines the HAS_VFORK symbol, which
indicates the vfork() routine is available.
d_void_closedir
From d_closedir.U:
This variable conditionally defines VOID_CLOSEDIR if closedir()
does not return a value.
d_voidsig
From d_voidsig.U:
This variable conditionally defines VOIDSIG if this system
declares "void (*signal(...))()" in signal.h. The old way was to
declare it as "int (*signal(...))()".
d_voidtty
From i_sysioctl.U:
This variable conditionally defines USE_IOCNOTTY to indicate that the
ioctl() call with TIOCNOTTY should be used to void tty association.
Otherwise (on USG probably), it is enough to close the standard file
decriptors and do a setpgrp().
d_volatile
From d_volatile.U:
This variable conditionally defines the HASVOLATILE symbol, which
indicates to the C program that this C compiler knows about the
volatile declaration.
d_vprintf
From d_vprintf.U:
This variable conditionally defines the HAS_VPRINTF symbol, which
indicates to the C program that the vprintf() routine is available
to printf with a pointer to an argument list.
d_wait4
From d_wait4.U:
This variable conditionally defines the HAS_WAIT4 symbol, which indicates the wait4() routine is available.
d_waitpid
From d_waitpid.U:
This variable conditionally defines HAS_WAITPID if waitpid() is
available to wait for child process.
d_wcstombs
From d_wcstombs.U:
This variable conditionally defines the HAS_WCSTOMBS symbol, which
indicates to the C program that the wcstombs() routine is available
to convert wide character strings to multibyte strings.
d_wctomb
From d_wctomb.U:
This variable conditionally defines the HAS_WCTOMB symbol, which
indicates to the C program that the wctomb() routine is available
to convert a wide character to a multibyte.
d_writev
From d_writev.U:
This variable conditionally defines the HAS_WRITEV symbol, which
indicates to the C program that the writev() routine is available.
d_xenix
From Guess.U:
This variable conditionally defines the symbol XENIX, which alerts
the C program that it runs under Xenix.
date
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the date program. After Configure runs,
the value is reset to a plain date and is not useful.
db_hashtype
From i_db.U:
This variable contains the type of the hash structure element
in the <db.h> header file. In older versions of DB, it was
int, while in newer ones it is u_int32_t.
db_prefixtype
From i_db.U:
This variable contains the type of the prefix structure element
in the <db.h> header file. In older versions of DB, it was
int, while in newer ones it is size_t.
db_version_major
From i_db.U:
This variable contains the major version number of
Berkeley DB found in the <db.h> header file.
db_version_minor
From i_db.U:
This variable contains the minor version number of
Berkeley DB found in the <db.h> header file.
For DB version 1 this is always 0.
db_version_patch
From i_db.U:
This variable contains the patch version number of
Berkeley DB found in the <db.h> header file.
For DB version 1 this is always 0.
defvoidused
From voidflags.U:
This variable contains the default value of the VOIDUSED symbol (15).
direntrytype
From i_dirent.U:
This symbol is set to struct direct or struct dirent depending on
whether dirent is available or not. You should use this pseudo type to
portably declare your directory entries.
dlext
From dlext.U:
This variable contains the extension that is to be used for the dynamically loaded modules that perl generaties.
dlsrc
From dlsrc.U:
This variable contains the name of the dynamic loading file that will be used with the package.
doublesize
From doublesize.U:
This variable contains the value of the DOUBLESIZE symbol, which
indicates to the C program how many bytes there are in a double.
drand01
From randfunc.U:
Indicates the macro to be used to generate normalized
random numbers. Uses randfunc, often divided by
(double) (((unsigned long) 1 << randbits)) in order to
normalize the result.
In C programs, the macro Drand01 is mapped to drand01.
drand48_r_proto
From d_drand48_r.U:
This variable encodes the prototype of drand48_r.
It is zero if d_drand48_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_drand48_r
is defined.
dynamic_ext
From Extensions.U:
This variable holds a list of XS extension files we want to
link dynamically into the package. It is used by Makefile.
eagain
From nblock_io.U:
This variable bears the symbolic errno code set by read() when no data is present on the file and non-blocking I/O was enabled (otherwise, read() blocks naturally).
ebcdic
From ebcdic.U:
This variable conditionally defines EBCDIC if this
system uses EBCDIC encoding. Among other things, this
means that the character ranges are not contiguous.
See trnl.U
echo
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the echo program. After Configure runs,
the value is reset to a plain echo and is not useful.
egrep
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the egrep program. After Configure runs,
the value is reset to a plain egrep and is not useful.
emacs
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
endgrent_r_proto
From d_endgrent_r.U:
This variable encodes the prototype of endgrent_r.
It is zero if d_endgrent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_endgrent_r
is defined.
endhostent_r_proto
From d_endhostent_r.U:
This variable encodes the prototype of endhostent_r.
It is zero if d_endhostent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_endhostent_r
is defined.
endnetent_r_proto
From d_endnetent_r.U:
This variable encodes the prototype of endnetent_r.
It is zero if d_endnetent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_endnetent_r
is defined.
endprotoent_r_proto
From d_endprotoent_r.U:
This variable encodes the prototype of endprotoent_r.
It is zero if d_endprotoent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_endprotoent_r
is defined.
endpwent_r_proto
From d_endpwent_r.U:
This variable encodes the prototype of endpwent_r.
It is zero if d_endpwent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_endpwent_r
is defined.
endservent_r_proto
From d_endservent_r.U:
This variable encodes the prototype of endservent_r.
It is zero if d_endservent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_endservent_r
is defined.
eunicefix
From Init.U:
When running under Eunice this variable contains a command which will convert a shell script to the proper form of text file for it to be executable by the shell. On other systems it is a no-op.
exe_ext
From Unix.U:
This is an old synonym for _exe.
expr
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the expr program. After Configure runs,
the value is reset to a plain expr and is not useful.
extensions
From Extensions.U:
This variable holds a list of all extension files (both XS and
non-xs linked into the package. It is propagated to Config.pm
and is typically used to test whether a particular extesion
is available.
extras
From Extras.U:
This variable holds a list of extra modules to install.
fflushall
From fflushall.U:
This symbol, if defined, tells that to flush all pending stdio output one must loop through all the stdio file handles stored in an array and fflush them. Note that if fflushNULL is defined, fflushall will not even be probed for and will be left undefined.
fflushNULL
From fflushall.U:
This symbol, if defined, tells that fflush(NULL) does flush
all pending stdio output.
find
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
firstmakefile
From Unix.U:
This variable defines the first file searched by make. On unix, it is makefile (then Makefile). On case-insensitive systems, it might be something else. This is only used to deal with convoluted make depend tricks.
flex
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
fpossize
From fpossize.U:
This variable contains the size of a fpostype in bytes.
fpostype
From fpostype.U:
This variable defines Fpos_t to be something like fpos_t, long, uint, or whatever type is used to declare file positions in libc.
freetype
From mallocsrc.U:
This variable contains the return type of free(). It is usually void, but occasionally int.
from
From Cross.U:
This variable contains the command used by Configure
to copy files from the target host. Useful and available
only during Perl build.
The string : if not cross-compiling.
full_ar
From Loc_ar.U:
This variable contains the full pathname to ar, whether or
not the user has specified portability. This is only used
in the Makefile.SH.
full_csh
From d_csh.U:
This variable contains the full pathname to csh, whether or
not the user has specified portability. This is only used
in the compiled C program, and we assume that all systems which
can share this executable will have the same full pathname to
csh.
full_sed
From Loc_sed.U:
This variable contains the full pathname to sed, whether or
not the user has specified portability. This is only used
in the compiled C program, and we assume that all systems which
can share this executable will have the same full pathname to
sed.
gccosandvers
From gccvers.U:
If GNU cc (gcc) is used, this variable the operating system and
version used to compile the gcc. It is set to '' if not gcc,
or if nothing useful can be parsed as the os version.
gccversion
From gccvers.U:
If GNU cc (gcc) is used, this variable holds 1 or 2 to
indicate whether the compiler is version 1 or 2. This is used in
setting some of the default cflags. It is set to '' if not gcc.
getgrent_r_proto
From d_getgrent_r.U:
This variable encodes the prototype of getgrent_r.
It is zero if d_getgrent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrent_r
is defined.
getgrgid_r_proto
From d_getgrgid_r.U:
This variable encodes the prototype of getgrgid_r.
It is zero if d_getgrgid_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrgid_r
is defined.
getgrnam_r_proto
From d_getgrnam_r.U:
This variable encodes the prototype of getgrnam_r.
It is zero if d_getgrnam_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getgrnam_r
is defined.
gethostbyaddr_r_proto
From d_gethostbyaddr_r.U:
This variable encodes the prototype of gethostbyaddr_r.
It is zero if d_gethostbyaddr_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyaddr_r
is defined.
gethostbyname_r_proto
From d_gethostbyname_r.U:
This variable encodes the prototype of gethostbyname_r.
It is zero if d_gethostbyname_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostbyname_r
is defined.
gethostent_r_proto
From d_gethostent_r.U:
This variable encodes the prototype of gethostent_r.
It is zero if d_gethostent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_gethostent_r
is defined.
getlogin_r_proto
From d_getlogin_r.U:
This variable encodes the prototype of getlogin_r.
It is zero if d_getlogin_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getlogin_r
is defined.
getnetbyaddr_r_proto
From d_getnetbyaddr_r.U:
This variable encodes the prototype of getnetbyaddr_r.
It is zero if d_getnetbyaddr_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyaddr_r
is defined.
getnetbyname_r_proto
From d_getnetbyname_r.U:
This variable encodes the prototype of getnetbyname_r.
It is zero if d_getnetbyname_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetbyname_r
is defined.
getnetent_r_proto
From d_getnetent_r.U:
This variable encodes the prototype of getnetent_r.
It is zero if d_getnetent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getnetent_r
is defined.
getprotobyname_r_proto
From d_getprotobyname_r.U:
This variable encodes the prototype of getprotobyname_r.
It is zero if d_getprotobyname_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobyname_r
is defined.
getprotobynumber_r_proto
From d_getprotobynumber_r.U:
This variable encodes the prototype of getprotobynumber_r.
It is zero if d_getprotobynumber_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotobynumber_r
is defined.
getprotoent_r_proto
From d_getprotoent_r.U:
This variable encodes the prototype of getprotoent_r.
It is zero if d_getprotoent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getprotoent_r
is defined.
getpwent_r_proto
From d_getpwent_r.U:
This variable encodes the prototype of getpwent_r.
It is zero if d_getpwent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwent_r
is defined.
getpwnam_r_proto
From d_getpwnam_r.U:
This variable encodes the prototype of getpwnam_r.
It is zero if d_getpwnam_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwnam_r
is defined.
getpwuid_r_proto
From d_getpwuid_r.U:
This variable encodes the prototype of getpwuid_r.
It is zero if d_getpwuid_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getpwuid_r
is defined.
getservbyname_r_proto
From d_getservbyname_r.U:
This variable encodes the prototype of getservbyname_r.
It is zero if d_getservbyname_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyname_r
is defined.
getservbyport_r_proto
From d_getservbyport_r.U:
This variable encodes the prototype of getservbyport_r.
It is zero if d_getservbyport_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservbyport_r
is defined.
getservent_r_proto
From d_getservent_r.U:
This variable encodes the prototype of getservent_r.
It is zero if d_getservent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getservent_r
is defined.
getspnam_r_proto
From d_getspnam_r.U:
This variable encodes the prototype of getspnam_r.
It is zero if d_getspnam_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_getspnam_r
is defined.
gidformat
From gidf.U:
This variable contains the format string used for printing a Gid_t.
gidsign
From gidsign.U:
This variable contains the signedness of a gidtype. 1 for unsigned, -1 for signed.
gidsize
From gidsize.U:
This variable contains the size of a gidtype in bytes.
gidtype
From gidtype.U:
This variable defines Gid_t to be something like gid_t, int, ushort, or whatever type is used to declare the return type of getgid(). Typically, it is the type of group ids in the kernel.
glibpth
From libpth.U:
This variable holds the general path (space-separated) used to find libraries. It may contain directories that do not exist on this platform, libpth is the cleaned-up version.
gmake
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the gmake program. After Configure runs,
the value is reset to a plain gmake and is not useful.
gmtime_r_proto
From d_gmtime_r.U:
This variable encodes the prototype of gmtime_r.
It is zero if d_gmtime_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_gmtime_r
is defined.
gnulibc_version
From d_gnulibc.U:
This variable contains the version number of the GNU C library.
It is usually something like 2.2.5. It is a plain '' if this
is not the GNU C library, or if the version is unknown.
grep
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the grep program. After Configure runs,
the value is reset to a plain grep and is not useful.
groupcat
From nis.U:
This variable contains a command that produces the text of the
/etc/group file. This is normally "cat /etc/group", but can be
"ypcat group" when NIS is used.
On some systems, such as os390, there may be no equivalent
command, in which case this variable is unset.
groupstype
From groupstype.U:
This variable defines Groups_t to be something like gid_t, int, ushort, or whatever type is used for the second argument to getgroups() and setgroups(). Usually, this is the same as gidtype (gid_t), but sometimes it isn't.
gzip
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the gzip program. After Configure runs,
the value is reset to a plain gzip and is not useful.
h_fcntl
From h_fcntl.U:
This is variable gets set in various places to tell i_fcntl that <fcntl.h> should be included.
h_sysfile
From h_sysfile.U:
This is variable gets set in various places to tell i_sys_file that <sys/file.h> should be included.
hint
From Oldconfig.U:
Gives the type of hints used for previous answers. May be one of
default, recommended or previous.
hostcat
From nis.U:
This variable contains a command that produces the text of the
/etc/hosts file. This is normally "cat /etc/hosts", but can be
"ypcat hosts" when NIS is used.
On some systems, such as os390, there may be no equivalent
command, in which case this variable is unset.
i16size
From perlxv.U:
This variable is the size of an I16 in bytes.
i16type
From perlxv.U:
This variable contains the C type used for Perl's I16.
i32size
From perlxv.U:
This variable is the size of an I32 in bytes.
i32type
From perlxv.U:
This variable contains the C type used for Perl's I32.
i64size
From perlxv.U:
This variable is the size of an I64 in bytes.
i64type
From perlxv.U:
This variable contains the C type used for Perl's I64.
i8size
From perlxv.U:
This variable is the size of an I8 in bytes.
i8type
From perlxv.U:
This variable contains the C type used for Perl's I8.
i_arpainet
From i_arpainet.U:
This variable conditionally defines the I_ARPA_INET symbol,
and indicates whether a C program should include <arpa/inet.h>.
i_bsdioctl
From i_sysioctl.U:
This variable conditionally defines the I_SYS_BSDIOCTL symbol, which
indicates to the C program that <sys/bsdioctl.h> exists and should
be included.
i_crypt
From i_crypt.U:
This variable conditionally defines the I_CRYPT symbol, and indicates
whether a C program should include <crypt.h>.
i_db
From i_db.U:
This variable conditionally defines the I_DB symbol, and indicates
whether a C program may include Berkeley's DB include file <db.h>.
i_dbm
From i_dbm.U:
This variable conditionally defines the I_DBM symbol, which
indicates to the C program that <dbm.h> exists and should
be included.
i_dirent
From i_dirent.U:
This variable conditionally defines I_DIRENT, which indicates
to the C program that it should include <dirent.h>.
i_dld
From i_dld.U:
This variable conditionally defines the I_DLD symbol, which
indicates to the C program that <dld.h> (GNU dynamic loading)
exists and should be included.
i_dlfcn
From i_dlfcn.U:
This variable conditionally defines the I_DLFCN symbol, which
indicates to the C program that <dlfcn.h> exists and should
be included.
i_fcntl
From i_fcntl.U:
This variable controls the value of I_FCNTL (which tells
the C program to include <fcntl.h>).
i_float
From i_float.U:
This variable conditionally defines the I_FLOAT symbol, and indicates
whether a C program may include <float.h> to get symbols like DBL_MAX
or DBL_MIN, i.e. machine dependent floating point values.
i_fp
From i_fp.U:
This variable conditionally defines the I_FP symbol, and indicates
whether a C program should include <fp.h>.
i_fp_class
From i_fp_class.U:
This variable conditionally defines the I_FP_CLASS symbol, and indicates
whether a C program should include <fp_class.h>.
i_gdbm
From i_gdbm.U:
This variable conditionally defines the I_GDBM symbol, which
indicates to the C program that <gdbm.h> exists and should
be included.
i_grp
From i_grp.U:
This variable conditionally defines the I_GRP symbol, and indicates
whether a C program should include <grp.h>.
i_ieeefp
From i_ieeefp.U:
This variable conditionally defines the I_IEEEFP symbol, and indicates
whether a C program should include <ieeefp.h>.
i_inttypes
From i_inttypes.U:
This variable conditionally defines the I_INTTYPES symbol,
and indicates whether a C program should include <inttypes.h>.
i_langinfo
From i_langinfo.U:
This variable conditionally defines the I_LANGINFO symbol,
and indicates whether a C program should include <langinfo.h>.
i_libutil
From i_libutil.U:
This variable conditionally defines the I_LIBUTIL symbol, and indicates
whether a C program should include <libutil.h>.
i_limits
From i_limits.U:
This variable conditionally defines the I_LIMITS symbol, and indicates
whether a C program may include <limits.h> to get symbols like WORD_BIT
and friends.
i_locale
From i_locale.U:
This variable conditionally defines the I_LOCALE symbol,
and indicates whether a C program should include <locale.h>.
i_machcthr
From i_machcthr.U:
This variable conditionally defines the I_MACH_CTHREADS symbol,
and indicates whether a C program should include <mach/cthreads.h>.
i_malloc
From i_malloc.U:
This variable conditionally defines the I_MALLOC symbol, and indicates
whether a C program should include <malloc.h>.
i_math
From i_math.U:
This variable conditionally defines the I_MATH symbol, and indicates
whether a C program may include <math.h>.
i_memory
From i_memory.U:
This variable conditionally defines the I_MEMORY symbol, and indicates
whether a C program should include <memory.h>.
i_mntent
From i_mntent.U:
This variable conditionally defines the I_MNTENT symbol, and indicates
whether a C program should include <mntent.h>.
i_ndbm
From i_ndbm.U:
This variable conditionally defines the I_NDBM symbol, which
indicates to the C program that <ndbm.h> exists and should
be included.
i_netdb
From i_netdb.U:
This variable conditionally defines the I_NETDB symbol, and indicates
whether a C program should include <netdb.h>.
i_neterrno
From i_neterrno.U:
This variable conditionally defines the I_NET_ERRNO symbol, which
indicates to the C program that <net/errno.h> exists and should
be included.
i_netinettcp
From i_netinettcp.U:
This variable conditionally defines the I_NETINET_TCP symbol,
and indicates whether a C program should include <netinet/tcp.h>.
i_niin
From i_niin.U:
This variable conditionally defines I_NETINET_IN, which indicates
to the C program that it should include <netinet/in.h>. Otherwise,
you may try <sys/in.h>.
i_poll
From i_poll.U:
This variable conditionally defines the I_POLL symbol, and indicates
whether a C program should include <poll.h>.
i_prot
From i_prot.U:
This variable conditionally defines the I_PROT symbol, and indicates
whether a C program should include <prot.h>.
i_pthread
From i_pthread.U:
This variable conditionally defines the I_PTHREAD symbol,
and indicates whether a C program should include <pthread.h>.
i_pwd
From i_pwd.U:
This variable conditionally defines I_PWD, which indicates
to the C program that it should include <pwd.h>.
i_rpcsvcdbm
From i_dbm.U:
This variable conditionally defines the I_RPCSVC_DBM symbol, which
indicates to the C program that <rpcsvc/dbm.h> exists and should
be included. Some System V systems might need this instead of <dbm.h>.
i_sfio
From i_sfio.U:
This variable conditionally defines the I_SFIO symbol,
and indicates whether a C program should include <sfio.h>.
i_sgtty
From i_termio.U:
This variable conditionally defines the I_SGTTY symbol, which
indicates to the C program that it should include <sgtty.h> rather
than <termio.h>.
i_shadow
From i_shadow.U:
This variable conditionally defines the I_SHADOW symbol, and indicates
whether a C program should include <shadow.h>.
i_socks
From i_socks.U:
This variable conditionally defines the I_SOCKS symbol, and indicates
whether a C program should include <socks.h>.
i_stdarg
From i_varhdr.U:
This variable conditionally defines the I_STDARG symbol, which
indicates to the C program that <stdarg.h> exists and should
be included.
i_stddef
From i_stddef.U:
This variable conditionally defines the I_STDDEF symbol, which
indicates to the C program that <stddef.h> exists and should
be included.
i_stdlib
From i_stdlib.U:
This variable conditionally defines the I_STDLIB symbol, which
indicates to the C program that <stdlib.h> exists and should
be included.
i_string
From i_string.U:
This variable conditionally defines the I_STRING symbol, which
indicates that <string.h> should be included rather than <strings.h>.
i_sunmath
From i_sunmath.U:
This variable conditionally defines the I_SUNMATH symbol, and indicates
whether a C program should include <sunmath.h>.
i_sysaccess
From i_sysaccess.U:
This variable conditionally defines the I_SYS_ACCESS symbol,
and indicates whether a C program should include <sys/access.h>.
i_sysdir
From i_sysdir.U:
This variable conditionally defines the I_SYS_DIR symbol, and indicates
whether a C program should include <sys/dir.h>.
i_sysfile
From i_sysfile.U:
This variable conditionally defines the I_SYS_FILE symbol, and indicates
whether a C program should include <sys/file.h> to get R_OK and friends.
i_sysfilio
From i_sysioctl.U:
This variable conditionally defines the I_SYS_FILIO symbol, which
indicates to the C program that <sys/filio.h> exists and should
be included in preference to <sys/ioctl.h>.
i_sysin
From i_niin.U:
This variable conditionally defines I_SYS_IN, which indicates
to the C program that it should include <sys/in.h> instead of
<netinet/in.h>.
i_sysioctl
From i_sysioctl.U:
This variable conditionally defines the I_SYS_IOCTL symbol, which
indicates to the C program that <sys/ioctl.h> exists and should
be included.
i_syslog
From i_syslog.U:
This variable conditionally defines the I_SYSLOG symbol,
and indicates whether a C program should include <syslog.h>.
i_sysmman
From i_sysmman.U:
This variable conditionally defines the I_SYS_MMAN symbol, and
indicates whether a C program should include <sys/mman.h>.
i_sysmode
From i_sysmode.U:
This variable conditionally defines the I_SYSMODE symbol,
and indicates whether a C program should include <sys/mode.h>.
i_sysmount
From i_sysmount.U:
This variable conditionally defines the I_SYSMOUNT symbol,
and indicates whether a C program should include <sys/mount.h>.
i_sysndir
From i_sysndir.U:
This variable conditionally defines the I_SYS_NDIR symbol, and indicates
whether a C program should include <sys/ndir.h>.
i_sysparam
From i_sysparam.U:
This variable conditionally defines the I_SYS_PARAM symbol, and indicates
whether a C program should include <sys/param.h>.
i_sysresrc
From i_sysresrc.U:
This variable conditionally defines the I_SYS_RESOURCE symbol,
and indicates whether a C program should include <sys/resource.h>.
i_syssecrt
From i_syssecrt.U:
This variable conditionally defines the I_SYS_SECURITY symbol,
and indicates whether a C program should include <sys/security.h>.
i_sysselct
From i_sysselct.U:
This variable conditionally defines I_SYS_SELECT, which indicates
to the C program that it should include <sys/select.h> in order to
get the definition of struct timeval.
i_syssockio
From i_sysioctl.U:
This variable conditionally defines I_SYS_SOCKIO to indicate to the
C program that socket ioctl codes may be found in <sys/sockio.h>
instead of <sys/ioctl.h>.
i_sysstat
From i_sysstat.U:
This variable conditionally defines the I_SYS_STAT symbol,
and indicates whether a C program should include <sys/stat.h>.
i_sysstatfs
From i_sysstatfs.U:
This variable conditionally defines the I_SYSSTATFS symbol,
and indicates whether a C program should include <sys/statfs.h>.
i_sysstatvfs
From i_sysstatvfs.U:
This variable conditionally defines the I_SYSSTATVFS symbol,
and indicates whether a C program should include <sys/statvfs.h>.
i_systime
From i_time.U:
This variable conditionally defines I_SYS_TIME, which indicates
to the C program that it should include <sys/time.h>.
i_systimek
From i_time.U:
This variable conditionally defines I_SYS_TIME_KERNEL, which
indicates to the C program that it should include <sys/time.h>
with KERNEL defined.
i_systimes
From i_systimes.U:
This variable conditionally defines the I_SYS_TIMES symbol, and indicates
whether a C program should include <sys/times.h>.
i_systypes
From i_systypes.U:
This variable conditionally defines the I_SYS_TYPES symbol,
and indicates whether a C program should include <sys/types.h>.
i_sysuio
From i_sysuio.U:
This variable conditionally defines the I_SYSUIO symbol, and indicates
whether a C program should include <sys/uio.h>.
i_sysun
From i_sysun.U:
This variable conditionally defines I_SYS_UN, which indicates
to the C program that it should include <sys/un.h> to get UNIX
domain socket definitions.
i_sysutsname
From i_sysutsname.U:
This variable conditionally defines the I_SYSUTSNAME symbol,
and indicates whether a C program should include <sys/utsname.h>.
i_sysvfs
From i_sysvfs.U:
This variable conditionally defines the I_SYSVFS symbol,
and indicates whether a C program should include <sys/vfs.h>.
i_syswait
From i_syswait.U:
This variable conditionally defines I_SYS_WAIT, which indicates
to the C program that it should include <sys/wait.h>.
i_termio
From i_termio.U:
This variable conditionally defines the I_TERMIO symbol, which
indicates to the C program that it should include <termio.h> rather
than <sgtty.h>.
i_termios
From i_termio.U:
This variable conditionally defines the I_TERMIOS symbol, which
indicates to the C program that the POSIX <termios.h> file is
to be included.
i_time
From i_time.U:
This variable conditionally defines I_TIME, which indicates
to the C program that it should include <time.h>.
i_unistd
From i_unistd.U:
This variable conditionally defines the I_UNISTD symbol, and indicates
whether a C program should include <unistd.h>.
i_ustat
From i_ustat.U:
This variable conditionally defines the I_USTAT symbol, and indicates
whether a C program should include <ustat.h>.
i_utime
From i_utime.U:
This variable conditionally defines the I_UTIME symbol, and indicates
whether a C program should include <utime.h>.
i_values
From i_values.U:
This variable conditionally defines the I_VALUES symbol, and indicates
whether a C program may include <values.h> to get symbols like MAXLONG
and friends.
i_varargs
From i_varhdr.U:
This variable conditionally defines I_VARARGS, which indicates
to the C program that it should include <varargs.h>.
i_varhdr
From i_varhdr.U:
Contains the name of the header to be included to get va_dcl definition. Typically one of varargs.h or stdarg.h.
i_vfork
From i_vfork.U:
This variable conditionally defines the I_VFORK symbol, and indicates
whether a C program should include vfork.h.
ignore_versioned_solibs
From libs.U:
This variable should be non-empty if non-versioned shared libraries (libfoo.so.x.y) are to be ignored (because they cannot be linked against).
inc_version_list
From inc_version_list.U:
This variable specifies the list of subdirectories in over
which perl.c:incpush() and lib/lib.pm will automatically
search when adding directories to @INC. The elements in
the list are separated by spaces. This is only useful
if you have a perl library directory tree structured like the
default one. See INSTALL for how this works. The versioned
site_perl directory was introduced in 5.005, so that is the
lowest possible value.
inc_version_list_init
From inc_version_list.U:
This variable holds the same list as inc_version_list, but
each item is enclosed in double quotes and separated by commas,
suitable for use in the PERL_INC_VERSION_LIST initialization.
incpath
From usrinc.U:
This variable must preceed the normal include path to get hte right one, as in $incpath/usr/include or $incpath/usr/lib. Value can be "" or /bsd43 on mips.
inews
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
installarchlib
From archlib.U:
This variable is really the same as archlibexp but may differ on
those systems using AFS. For extra portability, only this variable
should be used in makefiles.
installbin
From bin.U:
This variable is the same as binexp unless AFS is running in which case
the user is explicitely prompted for it. This variable should always
be used in your makefiles for maximum portability.
installman1dir
From man1dir.U:
This variable is really the same as man1direxp, unless you are using
AFS in which case it points to the read/write location whereas
man1direxp only points to the read-only access location. For extra
portability, you should only use this variable within your makefiles.
installman3dir
From man3dir.U:
This variable is really the same as man3direxp, unless you are using
AFS in which case it points to the read/write location whereas
man3direxp only points to the read-only access location. For extra
portability, you should only use this variable within your makefiles.
installprefix
From installprefix.U:
This variable holds the name of the directory below which "make install" will install the package. For most users, this is the same as prefix. However, it is useful for installing the software into a different (usually temporary) location after which it can be bundled up and moved somehow to the final location specified by prefix.
installprefixexp
From installprefix.U:
This variable holds the full absolute path of installprefix with all ~-expansion done.
installprivlib
From privlib.U:
This variable is really the same as privlibexp but may differ on
those systems using AFS. For extra portability, only this variable
should be used in makefiles.
installscript
From scriptdir.U:
This variable is usually the same as scriptdirexp, unless you are on
a system running AFS, in which case they may differ slightly. You
should always use this variable within your makefiles for portability.
installsitearch
From sitearch.U:
This variable is really the same as sitearchexp but may differ on
those systems using AFS. For extra portability, only this variable
should be used in makefiles.
installsitebin
From sitebin.U:
This variable is usually the same as sitebinexp, unless you are on
a system running AFS, in which case they may differ slightly. You
should always use this variable within your makefiles for portability.
installsitelib
From sitelib.U:
This variable is really the same as sitelibexp but may differ on
those systems using AFS. For extra portability, only this variable
should be used in makefiles.
installstyle
From installstyle.U:
This variable describes the style of the perl installation.
This is intended to be useful for tools that need to
manipulate entire perl distributions. Perl itself doesn't use
this to find its libraries -- the library directories are
stored directly in Config.pm. Currently, there are only two
styles: lib and lib/perl5. The default library locations
(e.g. privlib, sitelib) are either $prefix/lib or
$prefix/lib/perl5. The former is useful if $prefix is a
directory dedicated to perl (e.g. /opt/perl), while the latter
is useful if $prefix is shared by many packages, e.g. if
$prefix=/usr/local.
This may later be extended to include other information, so be careful with pattern-matching on the results.
For compatibility with perl5.005 and earlier, the default
setting is based on whether or not $prefix contains the string
perl.
installusrbinperl
From instubperl.U:
This variable tells whether Perl should be installed also as /usr/bin/perl in addition to $installbin/perl
installvendorarch
From vendorarch.U:
This variable is really the same as vendorarchexp but may differ on
those systems using AFS. For extra portability, only this variable
should be used in makefiles.
installvendorbin
From vendorbin.U:
This variable is really the same as vendorbinexp but may differ on
those systems using AFS. For extra portability, only this variable
should be used in makefiles.
installvendorlib
From vendorlib.U:
This variable is really the same as vendorlibexp but may differ on
those systems using AFS. For extra portability, only this variable
should be used in makefiles.
intsize
From intsize.U:
This variable contains the value of the INTSIZE symbol, which
indicates to the C program how many bytes there are in an int.
issymlink
From issymlink.U:
This variable holds the test command to test for a symbolic link
(if they are supported). Typical values include test -h and
test -L.
ivdformat
From perlxvf.U:
This variable contains the format string used for printing
a Perl IV as a signed decimal integer.
ivsize
From perlxv.U:
This variable is the size of an IV in bytes.
ivtype
From perlxv.U:
This variable contains the C type used for Perl's IV.
known_extensions
From Extensions.U:
This variable holds a list of all XS extensions included in
the package.
ksh
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
ld
From dlsrc.U:
This variable indicates the program to be used to link
libraries for dynamic loading. On some systems, it is ld.
On ELF systems, it should be $cc. Mostly, we'll try to respect
the hint file setting.
lddlflags
From dlsrc.U:
This variable contains any special flags that might need to be
passed to $ld to create a shared library suitable for dynamic
loading. It is up to the makefile to use it. For hpux, it
should be -b. For sunos 4.1, it is empty.
ldflags
From ccflags.U:
This variable contains any additional C loader flags desired by the user. It is up to the Makefile to use this.
ldflags_uselargefiles
From uselfs.U:
This variable contains the loader flags needed by large file builds and added to ldflags by hints files.
ldlibpthname
From libperl.U:
This variable holds the name of the shared library
search path, often LD_LIBRARY_PATH. To get an empty
string, the hints file must set this to none.
less
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the less program. After Configure runs,
the value is reset to a plain less and is not useful.
lib_ext
From Unix.U:
This is an old synonym for _a.
libc
From libc.U:
This variable contains the location of the C library.
libperl
From libperl.U:
The perl executable is obtained by linking perlmain.c with libperl, any static extensions (usually just DynaLoader), and any other libraries needed on this system. libperl is usually libperl.a, but can also be libperl.so.xxx if the user wishes to build a perl executable with a shared library.
libpth
From libpth.U:
This variable holds the general path (space-separated) used to find libraries. It is intended to be used by other units.
libs
From libs.U:
This variable holds the additional libraries we want to use. It is up to the Makefile to deal with it. The list can be empty.
libsdirs
From libs.U:
This variable holds the directory names aka dirnames of the libraries we found and accepted, duplicates are removed.
libsfiles
From libs.U:
This variable holds the filenames aka basenames of the libraries we found and accepted.
libsfound
From libs.U:
This variable holds the full pathnames of the libraries we found and accepted.
libspath
From libs.U:
This variable holds the directory names probed for libraries.
libswanted
From Myinit.U:
This variable holds a list of all the libraries we want to search. The order is chosen to pick up the c library ahead of ucb or bsd libraries for SVR4.
libswanted_uselargefiles
From uselfs.U:
This variable contains the libraries needed by large file builds
and added to ldflags by hints files. It is a space separated list
of the library names without the lib prefix or any suffix, just
like libswanted..
line
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
lint
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
lkflags
From ccflags.U:
This variable contains any additional C partial linker flags desired by the user. It is up to the Makefile to use this.
ln
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the ln program. After Configure runs,
the value is reset to a plain ln and is not useful.
lns
From lns.U:
This variable holds the name of the command to make
symbolic links (if they are supported). It can be used
in the Makefile. It is either ln -s or ln
localtime_r_proto
From d_localtime_r.U:
This variable encodes the prototype of localtime_r.
It is zero if d_localtime_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_localtime_r
is defined.
locincpth
From ccflags.U:
This variable contains a list of additional directories to be
searched by the compiler. The appropriate -I directives will
be added to ccflags. This is intended to simplify setting
local directories from the Configure command line.
It's not much, but it parallels the loclibpth stuff in libpth.U.
loclibpth
From libpth.U:
This variable holds the paths (space-separated) used to find local libraries. It is prepended to libpth, and is intended to be easily set from the command line.
longdblsize
From d_longdbl.U:
This variable contains the value of the LONG_DOUBLESIZE symbol, which
indicates to the C program how many bytes there are in a long double,
if this system supports long doubles.
longlongsize
From d_longlong.U:
This variable contains the value of the LONGLONGSIZE symbol, which
indicates to the C program how many bytes there are in a long long,
if this system supports long long.
longsize
From intsize.U:
This variable contains the value of the LONGSIZE symbol, which
indicates to the C program how many bytes there are in a long.
lp
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
lpr
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
ls
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the ls program. After Configure runs,
the value is reset to a plain ls and is not useful.
lseeksize
From lseektype.U:
This variable defines lseektype to be something like off_t, long, or whatever type is used to declare lseek offset's type in the kernel (which also appears to be lseek's return type).
lseektype
From lseektype.U:
This variable defines lseektype to be something like off_t, long, or whatever type is used to declare lseek offset's type in the kernel (which also appears to be lseek's return type).
mail
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
mailx
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
make
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the make program. After Configure runs,
the value is reset to a plain make and is not useful.
make_set_make
From make.U:
Some versions of make set the variable MAKE. Others do not.
This variable contains the string to be included in Makefile.SH
so that MAKE is set if needed, and not if not needed.
Possible values are:
make_set_make=# # If your make program handles this for you,
make_set_make=MAKE=$make # if it doesn't.
I used a comment character so that we can distinguish a
set value (from a previous config.sh or Configure -D option)
from an uncomputed value.
mallocobj
From mallocsrc.U:
This variable contains the name of the malloc.o that this package generates, if that malloc.o is preferred over the system malloc. Otherwise the value is null. This variable is intended for generating Makefiles. See mallocsrc.
mallocsrc
From mallocsrc.U:
This variable contains the name of the malloc.c that comes with the package, if that malloc.c is preferred over the system malloc. Otherwise the value is null. This variable is intended for generating Makefiles.
malloctype
From mallocsrc.U:
This variable contains the kind of ptr returned by malloc and realloc.
man1dir
From man1dir.U:
This variable contains the name of the directory in which manual source pages are to be put. It is the responsibility of the Makefile.SH to get the value of this into the proper command. You must be prepared to do the ~name expansion yourself.
man1direxp
From man1dir.U:
This variable is the same as the man1dir variable, but is filename expanded at configuration time, for convenient use in makefiles.
man1ext
From man1dir.U:
This variable contains the extension that the manual page should
have: one of n, l, or 1. The Makefile must supply the ..
See man1dir.
man3dir
From man3dir.U:
This variable contains the name of the directory in which manual source pages are to be put. It is the responsibility of the Makefile.SH to get the value of this into the proper command. You must be prepared to do the ~name expansion yourself.
man3direxp
From man3dir.U:
This variable is the same as the man3dir variable, but is filename expanded at configuration time, for convenient use in makefiles.
man3ext
From man3dir.U:
This variable contains the extension that the manual page should
have: one of n, l, or 3. The Makefile must supply the ..
See man3dir.
Mcc
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the Mcc program. After Configure runs,
the value is reset to a plain Mcc and is not useful.
mips_type
From usrinc.U:
This variable holds the environment type for the mips system. Possible values are "BSD 4.3" and "System V".
mkdir
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the mkdir program. After Configure runs,
the value is reset to a plain mkdir and is not useful.
mmaptype
From d_mmap.U:
This symbol contains the type of pointer returned by mmap()
(and simultaneously the type of the first argument).
It can be void * or caddr_t.
modetype
From modetype.U:
This variable defines modetype to be something like mode_t, int, unsigned short, or whatever type is used to declare file modes for system calls.
more
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the more program. After Configure runs,
the value is reset to a plain more and is not useful.
multiarch
From multiarch.U:
This variable conditionally defines the MULTIARCH symbol
which signifies the presence of multiplatform files.
This is normally set by hints files.
mv
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
myarchname
From archname.U:
This variable holds the architecture name computed by Configure in a previous run. It is not intended to be perused by any user and should never be set in a hint file.
mydomain
From myhostname.U:
This variable contains the eventual value of the MYDOMAIN symbol,
which is the domain of the host the program is going to run on.
The domain must be appended to myhostname to form a complete host name.
The dot comes with mydomain, and need not be supplied by the program.
myhostname
From myhostname.U:
This variable contains the eventual value of the MYHOSTNAME symbol,
which is the name of the host the program is going to run on.
The domain is not kept with hostname, but must be gotten from mydomain.
The dot comes with mydomain, and need not be supplied by the program.
myuname
From Oldconfig.U:
The output of uname -a if available, otherwise the hostname. On Xenix,
pseudo variables assignments in the output are stripped, thank you. The
whole thing is then lower-cased.
n
From n.U:
This variable contains the -n flag if that is what causes the echo
command to suppress newline. Otherwise it is null. Correct usage is
$echo $n "prompt for a question: $c".
need_va_copy
From need_va_copy.U:
This symbol, if defined, indicates that the system stores
the variable argument list datatype, va_list, in a format
that cannot be copied by simple assignment, so that some
other means must be used when copying is required.
As such systems vary in their provision (or non-provision)
of copying mechanisms, handy.h defines a platform-
independent macro, Perl_va_copy(src, dst), to do the job.
netdb_hlen_type
From netdbtype.U:
This variable holds the type used for the 2nd argument to gethostbyaddr(). Usually, this is int or size_t or unsigned. This is only useful if you have gethostbyaddr(), naturally.
netdb_host_type
From netdbtype.U:
This variable holds the type used for the 1st argument to gethostbyaddr(). Usually, this is char * or void *, possibly with or without a const prefix. This is only useful if you have gethostbyaddr(), naturally.
netdb_name_type
From netdbtype.U:
This variable holds the type used for the argument to gethostbyname(). Usually, this is char * or const char *. This is only useful if you have gethostbyname(), naturally.
netdb_net_type
From netdbtype.U:
This variable holds the type used for the 1st argument to getnetbyaddr(). Usually, this is int or long. This is only useful if you have getnetbyaddr(), naturally.
nm
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the nm program. After Configure runs,
the value is reset to a plain nm and is not useful.
nm_opt
From usenm.U:
This variable holds the options that may be necessary for nm.
nm_so_opt
From usenm.U:
This variable holds the options that may be necessary for nm
to work on a shared library but that can not be used on an
archive library. Currently, this is only used by Linux, where
nm --dynamic is *required* to get symbols from an ELF library which
has been stripped, but nm --dynamic is *fatal* on an archive library.
Maybe Linux should just always set usenm=false.
nonxs_ext
From Extensions.U:
This variable holds a list of all non-xs extensions included in the package. All of them will be built.
nroff
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the nroff program. After Configure runs,
the value is reset to a plain nroff and is not useful.
nv_preserves_uv_bits
From perlxv.U:
This variable indicates how many of bits type uvtype a variable nvtype can preserve.
nveformat
From perlxvf.U:
This variable contains the format string used for printing
a Perl NV using %e-ish floating point format.
nvEUformat
From perlxvf.U:
This variable contains the format string used for printing
a Perl NV using %E-ish floating point format.
nvfformat
From perlxvf.U:
This variable confains the format string used for printing
a Perl NV using %f-ish floating point format.
nvFUformat
From perlxvf.U:
This variable confains the format string used for printing
a Perl NV using %F-ish floating point format.
nvgformat
From perlxvf.U:
This variable contains the format string used for printing
a Perl NV using %g-ish floating point format.
nvGUformat
From perlxvf.U:
This variable contains the format string used for printing
a Perl NV using %G-ish floating point format.
nvsize
From perlxv.U:
This variable is the size of an NV in bytes.
nvtype
From perlxv.U:
This variable contains the C type used for Perl's NV.
o_nonblock
From nblock_io.U:
This variable bears the symbol value to be used during open() or fcntl()
to turn on non-blocking I/O for a file descriptor. If you wish to switch
between blocking and non-blocking, you may try ioctl(FIOSNBIO) instead,
but that is only supported by some devices.
obj_ext
From Unix.U:
This is an old synonym for _o.
old_pthread_create_joinable
From d_pthrattrj.U:
This variable defines the constant to use for creating joinable
(aka undetached) pthreads. Unused if pthread.h defines
PTHREAD_CREATE_JOINABLE. If used, possible values are
PTHREAD_CREATE_UNDETACHED and __UNDETACHED.
optimize
From ccflags.U:
This variable contains any optimizer/debugger flag that should be used. It is up to the Makefile to use it.
orderlib
From orderlib.U:
This variable is true if the components of libraries must be ordered
(with `lorder $* | tsort`) before placing them in an archive. Set to
false if ranlib or ar can generate random libraries.
osname
From Oldconfig.U:
This variable contains the operating system name (e.g. sunos, solaris, hpux, etc.). It can be useful later on for setting defaults. Any spaces are replaced with underscores. It is set to a null string if we can't figure it out.
osvers
From Oldconfig.U:
This variable contains the operating system version (e.g. 4.1.3, 5.2, etc.). It is primarily used for helping select an appropriate hints file, but might be useful elsewhere for setting defaults. It is set to '' if we can't figure it out. We try to be flexible about how much of the version number to keep, e.g. if 4.1.1, 4.1.2, and 4.1.3 are essentially the same for this package, hints files might just be os_4.0 or os_4.1, etc., not keeping separate files for each little release.
otherlibdirs
From otherlibdirs.U:
This variable contains a colon-separated set of paths for the perl
binary to search for additional library files or modules.
These directories will be tacked to the end of @INC.
Perl will automatically search below each path for version-
and architecture-specific directories. See inc_version_list
for more details.
A value of means none and is used to preserve this value
for the next run through Configure.
package
From package.U:
This variable contains the name of the package being constructed. It is primarily intended for the use of later Configure units.
pager
From pager.U:
This variable contains the name of the preferred pager on the system. Usual values are (the full pathnames of) more, less, pg, or cat.
passcat
From nis.U:
This variable contains a command that produces the text of the
/etc/passwd file. This is normally "cat /etc/passwd", but can be
"ypcat passwd" when NIS is used.
On some systems, such as os390, there may be no equivalent
command, in which case this variable is unset.
patchlevel
From patchlevel.U:
The patchlevel level of this package.
The value of patchlevel comes from the patchlevel.h file.
In a version number such as 5.6.1, this is the 6.
In patchlevel.h, this is referred to as PERL_VERSION.
path_sep
From Unix.U:
This is an old synonym for p_ in Head.U, the character
used to separate elements in the command shell search PATH.
perl5
From perl5.U:
This variable contains the full path (if any) to a previously installed perl5.005 or later suitable for running the script to determine inc_version_list.
perl
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
perl_patchlevel
From patchlevel.U:
This is the Perl patch level, a numeric change identifier, as defined by whichever source code maintenance system is used to maintain the patches; currently Perforce. It does not correlate with the Perl version numbers or the maintenance versus development dichotomy except by also being increasing.
PERL_REVISION
From Oldsyms.U:
In a Perl version number such as 5.6.2, this is the 5. This value is manually set in patchlevel.h
PERL_SUBVERSION
From Oldsyms.U:
In a Perl version number such as 5.6.2, this is the 2. Values greater than 50 represent potentially unstable development subversions. This value is manually set in patchlevel.h
PERL_VERSION
From Oldsyms.U:
In a Perl version number such as 5.6.2, this is the 6. This value is manually set in patchlevel.h
perladmin
From perladmin.U:
Electronic mail address of the perl5 administrator.
perllibs
From End.U:
The list of libraries needed by Perl only (any libraries needed by extensions only will by dropped, if using dynamic loading).
perlpath
From perlpath.U:
This variable contains the eventual value of the PERLPATH symbol,
which contains the name of the perl interpreter to be used in
shell scripts and in the "eval exec" idiom. This variable is
not necessarily the pathname of the file containing the perl
interpreter; you must append the executable extension (_exe) if
it is not already present. Note that Perl code that runs during
the Perl build process cannot reference this variable, as Perl
may not have been installed, or even if installed, may be a
different version of Perl.
pg
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the pg program. After Configure runs,
the value is reset to a plain pg and is not useful.
phostname
From myhostname.U:
This variable contains the eventual value of the PHOSTNAME symbol,
which is a command that can be fed to popen() to get the host name.
The program should probably not presume that the domain is or isn't
there already.
pidtype
From pidtype.U:
This variable defines PIDTYPE to be something like pid_t, int,
ushort, or whatever type is used to declare process ids in the kernel.
plibpth
From libpth.U:
Holds the private path used by Configure to find out the libraries. Its value is prepend to libpth. This variable takes care of special machines, like the mips. Usually, it should be empty.
pm_apiversion
From xs_apiversion.U:
This variable contains the version of the oldest perl
compatible with the present perl. (That is, pure perl modules
written for $pm_apiversion will still work for the current
version). perl.c:incpush() and lib/lib.pm will automatically
search in $sitelib for older directories across major versions
back to pm_apiversion. This is only useful if you have a perl
library directory tree structured like the default one. The
versioned site_perl library was introduced in 5.005, so that's
the default setting for this variable. It's hard to imagine
it changing before Perl6. It is included here for symmetry
with xs_apiveprsion -- the searching algorithms will
(presumably) be similar.
See the INSTALL file for how this works.
pmake
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
pr
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
prefix
From prefix.U:
This variable holds the name of the directory below which the user will install the package. Usually, this is /usr/local, and executables go in /usr/local/bin, library stuff in /usr/local/lib, man pages in /usr/local/man, etc. It is only used to set defaults for things in bin.U, mansrc.U, privlib.U, or scriptdir.U.
prefixexp
From prefix.U:
This variable holds the full absolute path of the directory below which the user will install the package. Derived from prefix.
privlib
From privlib.U:
This variable contains the eventual value of the PRIVLIB symbol,
which is the name of the private library for this package. It may
have a ~ on the front. It is up to the makefile to eventually create
this directory while performing installation (with ~ substitution).
privlibexp
From privlib.U:
This variable is the ~name expanded version of privlib, so that you may use it directly in Makefiles or shell scripts.
procselfexe
From d_procselfexe.U:
If d_procselfexe is defined, $procselfexe is the filename of the symbolic link pointing to the absolute pathname of the executing program.
prototype
From prototype.U:
This variable holds the eventual value of CAN_PROTOTYPE, which
indicates the C compiler can handle funciton prototypes.
ptrsize
From ptrsize.U:
This variable contains the value of the PTRSIZE symbol, which
indicates to the C program how many bytes there are in a pointer.
quadkind
From quadtype.U:
This variable, if defined, encodes the type of a quad: 1 = int, 2 = long, 3 = long long, 4 = int64_t.
quadtype
From quadtype.U:
This variable defines Quad_t to be something like long, int, long long, int64_t, or whatever type is used for 64-bit integers.
randbits
From randfunc.U:
Indicates how many bits are produced by the function used to generate normalized random numbers.
randfunc
From randfunc.U:
Indicates the name of the random number function to use.
Values include drand48, random, and rand. In C programs,
the Drand01 macro is defined to generate uniformly distributed
random numbers over the range [0., 1.[ (see drand01 and nrand).
random_r_proto
From d_random_r.U:
This variable encodes the prototype of random_r.
It is zero if d_random_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_random_r
is defined.
randseedtype
From randfunc.U:
Indicates the type of the argument of the seedfunc.
ranlib
From orderlib.U:
This variable is set to the pathname of the ranlib program, if it is
needed to generate random libraries. Set to : if ar can generate
random libraries or if random libraries are not supported
rd_nodata
From nblock_io.U:
This variable holds the return code from read() when no data is
present. It should be -1, but some systems return 0 when O_NDELAY is
used, which is a shame because you cannot make the difference between
no data and an EOF.. Sigh!
readdir64_r_proto
From d_readdir64_r.U:
This variable encodes the prototype of readdir64_r.
It is zero if d_readdir64_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir64_r
is defined.
readdir_r_proto
From d_readdir_r.U:
This variable encodes the prototype of readdir_r.
It is zero if d_readdir_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_readdir_r
is defined.
revision
From patchlevel.U:
The value of revision comes from the patchlevel.h file.
In a version number such as 5.6.1, this is the 5.
In patchlevel.h, this is referred to as PERL_REVISION.
rm
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the rm program. After Configure runs,
the value is reset to a plain rm and is not useful.
rmail
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
run
From Cross.U:
This variable contains the command used by Configure to copy and execute a cross-compiled executable in the target host. Useful and available only during Perl build. Empty string '' if not cross-compiling.
runnm
From usenm.U:
This variable contains true or false depending whether the
nm extraction should be performed or not, according to the value
of usenm and the flags on the Configure command line.
sched_yield
From d_pthread_y.U:
This variable defines the way to yield the execution of the current thread.
scriptdir
From scriptdir.U:
This variable holds the name of the directory in which the user wants to put publicly scripts for the package in question. It is either the same directory as for binaries, or a special one that can be mounted across different architectures, like /usr/share. Programs must be prepared to deal with ~name expansion.
scriptdirexp
From scriptdir.U:
This variable is the same as scriptdir, but is filename expanded at configuration time, for programs not wanting to bother with it.
sed
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the sed program. After Configure runs,
the value is reset to a plain sed and is not useful.
seedfunc
From randfunc.U:
Indicates the random number generating seed function. Values include srand48, srandom, and srand.
selectminbits
From selectminbits.U:
This variable holds the minimum number of bits operated by select. That is, if you do select(n, ...), how many bits at least will be cleared in the masks if some activity is detected. Usually this is either n or 32*ceil(n/32), especially many little-endians do the latter. This is only useful if you have select(), naturally.
selecttype
From selecttype.U:
This variable holds the type used for the 2nd, 3rd, and 4th
arguments to select. Usually, this is fd_set *, if HAS_FD_SET
is defined, and int * otherwise. This is only useful if you
have select(), naturally.
sendmail
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
setgrent_r_proto
From d_setgrent_r.U:
This variable encodes the prototype of setgrent_r.
It is zero if d_setgrent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_setgrent_r
is defined.
sethostent_r_proto
From d_sethostent_r.U:
This variable encodes the prototype of sethostent_r.
It is zero if d_sethostent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_sethostent_r
is defined.
setlocale_r_proto
From d_setlocale_r.U:
This variable encodes the prototype of setlocale_r.
It is zero if d_setlocale_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_setlocale_r
is defined.
setnetent_r_proto
From d_setnetent_r.U:
This variable encodes the prototype of setnetent_r.
It is zero if d_setnetent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_setnetent_r
is defined.
setprotoent_r_proto
From d_setprotoent_r.U:
This variable encodes the prototype of setprotoent_r.
It is zero if d_setprotoent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_setprotoent_r
is defined.
setpwent_r_proto
From d_setpwent_r.U:
This variable encodes the prototype of setpwent_r.
It is zero if d_setpwent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_setpwent_r
is defined.
setservent_r_proto
From d_setservent_r.U:
This variable encodes the prototype of setservent_r.
It is zero if d_setservent_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_setservent_r
is defined.
sh
From sh.U:
This variable contains the full pathname of the shell used
on this system to execute Bourne shell scripts. Usually, this will be
/bin/sh, though it's possible that some systems will have /bin/ksh,
/bin/pdksh, /bin/ash, /bin/bash, or even something such as
D:/bin/sh.exe.
This unit comes before Options.U, so you can't set sh with a -D
option, though you can override this (and startsh)
with -O -Dsh=/bin/whatever -Dstartsh=whatever
shar
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
sharpbang
From spitshell.U:
This variable contains the string #! if this system supports that construct.
shmattype
From d_shmat.U:
This symbol contains the type of pointer returned by shmat().
It can be void * or char *.
shortsize
From intsize.U:
This variable contains the value of the SHORTSIZE symbol which
indicates to the C program how many bytes there are in a short.
shrpenv
From libperl.U:
If the user builds a shared libperl.so, then we need to tell the
perl executable where it will be able to find the installed libperl.so.
One way to do this on some systems is to set the environment variable
LD_RUN_PATH to the directory that will be the final location of the
shared libperl.so. The makefile can use this with something like
$shrpenv $(CC) -o perl perlmain.o $libperl $libs
Typical values are
shrpenv="env LD_RUN_PATH=$archlibexp/CORE"
or
shrpenv=''
See the main perl Makefile.SH for actual working usage.
Alternatively, we might be able to use a command line option such
as -R $archlibexp/CORE (Solaris) or -Wl,-rpath
$archlibexp/CORE (Linux).
shsharp
From spitshell.U:
This variable tells further Configure units whether your sh can handle # comments.
sig_count
From sig_name.U:
This variable holds a number larger than the largest valid
signal number. This is usually the same as the NSIG macro.
sig_name
From sig_name.U:
This variable holds the signal names, space separated. The leading
SIG in signal name is removed. A ZERO is prepended to the
list. This is currently not used.
sig_name_init
From sig_name.U:
This variable holds the signal names, enclosed in double quotes and
separated by commas, suitable for use in the SIG_NAME definition
below. A ZERO is prepended to the list, and the list is
terminated with a plain 0. The leading SIG in signal names
is removed. See sig_num.
sig_num
From sig_name.U:
This variable holds the signal numbers, space separated. A ZERO is
prepended to the list (corresponding to the fake SIGZERO), and
the list is terminated with a 0. Those numbers correspond to
the value of the signal listed in the same place within the
sig_name list.
sig_num_init
From sig_name.U:
This variable holds the signal numbers, enclosed in double quotes and
separated by commas, suitable for use in the SIG_NUM definition
below. A ZERO is prepended to the list, and the list is
terminated with a plain 0.
sig_size
From sig_name.U:
This variable contains the number of elements of the sig_name
and sig_num arrays, excluding the final NULL entry.
signal_t
From d_voidsig.U:
This variable holds the type of the signal handler (void or int).
sitearch
From sitearch.U:
This variable contains the eventual value of the SITEARCH symbol,
which is the name of the private library for this package. It may
have a ~ on the front. It is up to the makefile to eventually create
this directory while performing installation (with ~ substitution).
The standard distribution will put nothing in this directory.
After perl has been installed, users may install their own local
architecture-dependent modules in this directory with
MakeMaker Makefile.PL
or equivalent. See INSTALL for details.
sitearchexp
From sitearch.U:
This variable is the ~name expanded version of sitearch, so that you may use it directly in Makefiles or shell scripts.
sitebin
From sitebin.U:
This variable holds the name of the directory in which the user wants
to put add-on publicly executable files for the package in question. It
is most often a local directory such as /usr/local/bin. Programs using
this variable must be prepared to deal with ~name substitution.
The standard distribution will put nothing in this directory.
After perl has been installed, users may install their own local
executables in this directory with
MakeMaker Makefile.PL
or equivalent. See INSTALL for details.
sitebinexp
From sitebin.U:
This is the same as the sitebin variable, but is filename expanded at configuration time, for use in your makefiles.
sitelib
From sitelib.U:
This variable contains the eventual value of the SITELIB symbol,
which is the name of the private library for this package. It may
have a ~ on the front. It is up to the makefile to eventually create
this directory while performing installation (with ~ substitution).
The standard distribution will put nothing in this directory.
After perl has been installed, users may install their own local
architecture-independent modules in this directory with
MakeMaker Makefile.PL
or equivalent. See INSTALL for details.
sitelib_stem
From sitelib.U:
This variable is $sitelibexp with any trailing version-specific component removed. The elements in inc_version_list (inc_version_list.U) can be tacked onto this variable to generate a list of directories to search.
sitelibexp
From sitelib.U:
This variable is the ~name expanded version of sitelib, so that you may use it directly in Makefiles or shell scripts.
siteprefix
From siteprefix.U:
This variable holds the full absolute path of the directory below
which the user will install add-on packages.
See INSTALL for usage and examples.
siteprefixexp
From siteprefix.U:
This variable holds the full absolute path of the directory below which the user will install add-on packages. Derived from siteprefix.
sizesize
From sizesize.U:
This variable contains the size of a sizetype in bytes.
sizetype
From sizetype.U:
This variable defines sizetype to be something like size_t, unsigned long, or whatever type is used to declare length parameters for string functions.
sleep
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
smail
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
so
From so.U:
This variable holds the extension used to identify shared libraries
(also known as shared objects) on the system. Usually set to so.
sockethdr
From d_socket.U:
This variable has any cpp -I flags needed for socket support.
socketlib
From d_socket.U:
This variable has the names of any libraries needed for socket support.
socksizetype
From socksizetype.U:
This variable holds the type used for the size argument for various socket calls like accept. Usual values include socklen_t, size_t, and int.
sort
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the sort program. After Configure runs,
the value is reset to a plain sort and is not useful.
spackage
From package.U:
This variable contains the name of the package being constructed, with the first letter uppercased, i.e. suitable for starting sentences.
spitshell
From spitshell.U:
This variable contains the command necessary to spit out a runnable
shell on this system. It is either cat or a grep -v for # comments.
sPRId64
From quadfio.U:
This variable, if defined, contains the string used by stdio to
format 64-bit decimal numbers (format d) for output.
sPRIeldbl
From longdblfio.U:
This variable, if defined, contains the string used by stdio to
format long doubles (format e) for output.
sPRIEUldbl
From longdblfio.U:
This variable, if defined, contains the string used by stdio to
format long doubles (format E) for output.
The U in the name is to separate this from sPRIeldbl so that even
case-blind systems can see the difference.
sPRIfldbl
From longdblfio.U:
This variable, if defined, contains the string used by stdio to
format long doubles (format f) for output.
sPRIFUldbl
From longdblfio.U:
This variable, if defined, contains the string used by stdio to
format long doubles (format F) for output.
The U in the name is to separate this from sPRIfldbl so that even
case-blind systems can see the difference.
sPRIgldbl
From longdblfio.U:
This variable, if defined, contains the string used by stdio to
format long doubles (format g) for output.
sPRIGUldbl
From longdblfio.U:
This variable, if defined, contains the string used by stdio to
format long doubles (format G) for output.
The U in the name is to separate this from sPRIgldbl so that even
case-blind systems can see the difference.
sPRIi64
From quadfio.U:
This variable, if defined, contains the string used by stdio to
format 64-bit decimal numbers (format i) for output.
sPRIo64
From quadfio.U:
This variable, if defined, contains the string used by stdio to
format 64-bit octal numbers (format o) for output.
sPRIu64
From quadfio.U:
This variable, if defined, contains the string used by stdio to
format 64-bit unsigned decimal numbers (format u) for output.
sPRIx64
From quadfio.U:
This variable, if defined, contains the string used by stdio to
format 64-bit hexadecimal numbers (format x) for output.
sPRIXU64
From quadfio.U:
This variable, if defined, contains the string used by stdio to
format 64-bit hExADECimAl numbers (format X) for output.
The U in the name is to separate this from sPRIx64 so that even
case-blind systems can see the difference.
srand48_r_proto
From d_srand48_r.U:
This variable encodes the prototype of srand48_r.
It is zero if d_srand48_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_srand48_r
is defined.
srandom_r_proto
From d_srandom_r.U:
This variable encodes the prototype of srandom_r.
It is zero if d_srandom_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_srandom_r
is defined.
src
From src.U:
This variable holds the path to the package source. It is up to
the Makefile to use this variable and set VPATH accordingly to
find the sources remotely.
sSCNfldbl
From longdblfio.U:
This variable, if defined, contains the string used by stdio to
format long doubles (format f) for input.
ssizetype
From ssizetype.U:
This variable defines ssizetype to be something like ssize_t, long or int. It is used by functions that return a count of bytes or an error condition. It must be a signed type. We will pick a type such that sizeof(SSize_t) == sizeof(Size_t).
startperl
From startperl.U:
This variable contains the string to put on the front of a perl
script to make sure (hopefully) that it runs with perl and not some
shell. Of course, that leading line must be followed by the classical
perl idiom:
eval 'exec perl -S $0 ${1+$@}'
if $running_under_some_shell;
to guarantee perl startup should the shell execute the script. Note
that this magic incatation is not understood by csh.
startsh
From startsh.U:
This variable contains the string to put on the front of a shell script to make sure (hopefully) that it runs with sh and not some other shell.
static_ext
From Extensions.U:
This variable holds a list of XS extension files we want to
link statically into the package. It is used by Makefile.
stdchar
From stdchar.U:
This variable conditionally defines STDCHAR to be the type of char
used in stdio.h. It has the values "unsigned char" or char.
stdio_base
From d_stdstdio.U:
This variable defines how, given a FILE pointer, fp, to access the
_base field (or equivalent) of stdio.h's FILE structure. This will
be used to define the macro FILE_base(fp).
stdio_bufsiz
From d_stdstdio.U:
This variable defines how, given a FILE pointer, fp, to determine
the number of bytes store in the I/O buffer pointer to by the
_base field (or equivalent) of stdio.h's FILE structure. This will
be used to define the macro FILE_bufsiz(fp).
stdio_cnt
From d_stdstdio.U:
This variable defines how, given a FILE pointer, fp, to access the
_cnt field (or equivalent) of stdio.h's FILE structure. This will
be used to define the macro FILE_cnt(fp).
stdio_filbuf
From d_stdstdio.U:
This variable defines how, given a FILE pointer, fp, to tell
stdio to refill its internal buffers (?). This will
be used to define the macro FILE_filbuf(fp).
stdio_ptr
From d_stdstdio.U:
This variable defines how, given a FILE pointer, fp, to access the
_ptr field (or equivalent) of stdio.h's FILE structure. This will
be used to define the macro FILE_ptr(fp).
stdio_stream_array
From stdio_streams.U:
This variable tells the name of the array holding the stdio streams. Usual values include _iob, __iob, and __sF.
strerror_r_proto
From d_strerror_r.U:
This variable encodes the prototype of strerror_r.
It is zero if d_strerror_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_strerror_r
is defined.
strings
From i_string.U:
This variable holds the full path of the string header that will be used. Typically /usr/include/string.h or /usr/include/strings.h.
submit
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
subversion
From patchlevel.U:
The subversion level of this package.
The value of subversion comes from the patchlevel.h file.
In a version number such as 5.6.1, this is the 1.
In patchlevel.h, this is referred to as PERL_SUBVERSION.
This is unique to perl.
sysman
From sysman.U:
This variable holds the place where the manual is located on this system. It is not the place where the user wants to put his manual pages. Rather it is the place where Configure may look to find manual for unix commands (section 1 of the manual usually). See mansrc.
tail
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
tar
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
targetarch
From Cross.U:
If cross-compiling, this variable contains the target architecture. If not, this will be empty.
tbl
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
tee
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
test
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the test program. After Configure runs,
the value is reset to a plain test and is not useful.
timeincl
From i_time.U:
This variable holds the full path of the included time header(s).
timetype
From d_time.U:
This variable holds the type returned by time(). It can be long,
or time_t on BSD sites (in which case <sys/types.h> should be
included). Anyway, the type Time_t should be used.
tmpnam_r_proto
From d_tmpnam_r.U:
This variable encodes the prototype of tmpnam_r.
It is zero if d_tmpnam_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_tmpnam_r
is defined.
to
From Cross.U:
This variable contains the command used by Configure
to copy to from the target host. Useful and available
only during Perl build.
The string : if not cross-compiling.
touch
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the touch program. After Configure runs,
the value is reset to a plain touch and is not useful.
tr
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the tr program. After Configure runs,
the value is reset to a plain tr and is not useful.
trnl
From trnl.U:
This variable contains the value to be passed to the tr(1)
command to transliterate a newline. Typical values are
\012 and \n. This is needed for EBCDIC systems where
newline is not necessarily \012.
troff
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
ttyname_r_proto
From d_ttyname_r.U:
This variable encodes the prototype of ttyname_r.
It is zero if d_ttyname_r is undef, and one of the
REENTRANT_PROTO_T_ABC macros of reentr.h if d_ttyname_r
is defined.
u16size
From perlxv.U:
This variable is the size of an U16 in bytes.
u16type
From perlxv.U:
This variable contains the C type used for Perl's U16.
u32size
From perlxv.U:
This variable is the size of an U32 in bytes.
u32type
From perlxv.U:
This variable contains the C type used for Perl's U32.
u64size
From perlxv.U:
This variable is the size of an U64 in bytes.
u64type
From perlxv.U:
This variable contains the C type used for Perl's U64.
u8size
From perlxv.U:
This variable is the size of an U8 in bytes.
u8type
From perlxv.U:
This variable contains the C type used for Perl's U8.
uidformat
From uidf.U:
This variable contains the format string used for printing a Uid_t.
uidsign
From uidsign.U:
This variable contains the signedness of a uidtype. 1 for unsigned, -1 for signed.
uidsize
From uidsize.U:
This variable contains the size of a uidtype in bytes.
uidtype
From uidtype.U:
This variable defines Uid_t to be something like uid_t, int, ushort, or whatever type is used to declare user ids in the kernel.
uname
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the uname program. After Configure runs,
the value is reset to a plain uname and is not useful.
uniq
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the uniq program. After Configure runs,
the value is reset to a plain uniq and is not useful.
uquadtype
From quadtype.U:
This variable defines Uquad_t to be something like unsigned long, unsigned int, unsigned long long, uint64_t, or whatever type is used for 64-bit integers.
use5005threads
From usethreads.U:
This variable conditionally defines the USE_5005THREADS symbol, and indicates that Perl should be built to use the 5.005-based threading implementation.
use64bitall
From use64bits.U:
This variable conditionally defines the USE_64_BIT_ALL symbol,
and indicates that 64-bit integer types should be used
when available. The maximal possible
64-bitness is employed: LP64 or ILP64, meaning that you will
be able to use more than 2 gigabytes of memory. This mode is
even more binary incompatible than USE_64_BIT_INT. You may not
be able to run the resulting executable in a 32-bit CPU at all or
you may need at least to reboot your OS to 64-bit mode.
use64bitint
From use64bits.U:
This variable conditionally defines the USE_64_BIT_INT symbol, and indicates that 64-bit integer types should be used when available. The minimal possible 64-bitness is employed, just enough to get 64-bit integers into Perl. This may mean using for example "long longs", while your memory may still be limited to 2 gigabytes.
usecrosscompile
From Cross.U:
This variable conditionally defines the USE_CROSS_COMPILE symbol,
and indicates that Perl has been cross-compiled.
usedl
From dlsrc.U:
This variable indicates if the system supports dynamic loading of some sort. See also dlsrc and dlobj.
useithreads
From usethreads.U:
This variable conditionally defines the USE_ITHREADS symbol,
and indicates that Perl should be built to use the interpreter-based
threading implementation.
uselargefiles
From uselfs.U:
This variable conditionally defines the USE_LARGE_FILES symbol,
and indicates that large file interfaces should be used when
available.
uselongdouble
From uselongdbl.U:
This variable conditionally defines the USE_LONG_DOUBLE symbol,
and indicates that long doubles should be used when available.
usemorebits
From usemorebits.U:
This variable conditionally defines the USE_MORE_BITS symbol,
and indicates that explicit 64-bit interfaces and long doubles
should be used when available.
usemultiplicity
From usemultiplicity.U:
This variable conditionally defines the MULTIPLICITY symbol,
and indicates that Perl should be built to use multiplicity.
usemymalloc
From mallocsrc.U:
This variable contains y if the malloc that comes with this package
is desired over the system's version of malloc. People often include
special versions of malloc for effiency, but such versions are often
less portable. See also mallocsrc and mallocobj.
If this is y, then -lmalloc is removed from $libs.
usenm
From usenm.U:
This variable contains true or false depending whether the
nm extraction is wanted or not.
useopcode
From Extensions.U:
This variable holds either true or false to indicate
whether the Opcode extension should be used. The sole
use for this currently is to allow an easy mechanism
for users to skip the Opcode extension from the Configure
command line.
useperlio
From useperlio.U:
This variable conditionally defines the USE_PERLIO symbol,
and indicates that the PerlIO abstraction should be
used throughout.
useposix
From Extensions.U:
This variable holds either true or false to indicate
whether the POSIX extension should be used. The sole
use for this currently is to allow an easy mechanism
for hints files to indicate that POSIX will not compile
on a particular system.
usereentrant
From usethreads.U:
This variable conditionally defines the USE_REENTRANT_API symbol,
which indicates that the thread code may try to use the various
_r versions of library functions. This is only potentially
meaningful if usethreads is set and is very experimental, it is
not even prompted for.
usesfio
From d_sfio.U:
This variable is set to true when the user agrees to use sfio. It is set to false when sfio is not available or when the user explicitely requests not to use sfio. It is here primarily so that command-line settings can override the auto-detection of d_sfio without running into a "WHOA THERE".
useshrplib
From libperl.U:
This variable is set to yes if the user wishes
to build a shared libperl, and no otherwise.
usesocks
From usesocks.U:
This variable conditionally defines the USE_SOCKS symbol,
and indicates that Perl should be built to use SOCKS.
usethreads
From usethreads.U:
This variable conditionally defines the USE_THREADS symbol,
and indicates that Perl should be built to use threads.
usevendorprefix
From vendorprefix.U:
This variable tells whether the vendorprefix and consequently other vendor* paths are in use.
usevfork
From d_vfork.U:
This variable is set to true when the user accepts to use vfork. It is set to false when no vfork is available or when the user explicitely requests not to use vfork.
usrinc
From usrinc.U:
This variable holds the path of the include files, which is usually /usr/include. It is mainly used by other Configure units.
uuname
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
uvoformat
From perlxvf.U:
This variable contains the format string used for printing
a Perl UV as an unsigned octal integer.
uvsize
From perlxv.U:
This variable is the size of a UV in bytes.
uvtype
From perlxv.U:
This variable contains the C type used for Perl's UV.
uvuformat
From perlxvf.U:
This variable contains the format string used for printing
a Perl UV as an unsigned decimal integer.
uvxformat
From perlxvf.U:
This variable contains the format string used for printing
a Perl UV as an unsigned hexadecimal integer in lowercase abcdef.
uvXUformat
From perlxvf.U:
This variable contains the format string used for printing
a Perl UV as an unsigned hexadecimal integer in uppercase ABCDEF.
vendorarch
From vendorarch.U:
This variable contains the value of the PERL_VENDORARCH symbol.
It may have a ~ on the front.
The standard distribution will put nothing in this directory.
Vendors who distribute perl may wish to place their own
architecture-dependent modules and extensions in this directory with
MakeMaker Makefile.PL INSTALLDIRS=vendor
or equivalent. See INSTALL for details.
vendorarchexp
From vendorarch.U:
This variable is the ~name expanded version of vendorarch, so that you may use it directly in Makefiles or shell scripts.
vendorbin
From vendorbin.U:
This variable contains the eventual value of the VENDORBIN symbol.
It may have a ~ on the front.
The standard distribution will put nothing in this directory.
Vendors who distribute perl may wish to place additional
binaries in this directory with
MakeMaker Makefile.PL INSTALLDIRS=vendor
or equivalent. See INSTALL for details.
vendorbinexp
From vendorbin.U:
This variable is the ~name expanded version of vendorbin, so that you may use it directly in Makefiles or shell scripts.
vendorlib
From vendorlib.U:
This variable contains the eventual value of the VENDORLIB symbol,
which is the name of the private library for this package.
The standard distribution will put nothing in this directory.
Vendors who distribute perl may wish to place their own
modules in this directory with
MakeMaker Makefile.PL INSTALLDIRS=vendor
or equivalent. See INSTALL for details.
vendorlib_stem
From vendorlib.U:
This variable is $vendorlibexp with any trailing version-specific component removed. The elements in inc_version_list (inc_version_list.U) can be tacked onto this variable to generate a list of directories to search.
vendorlibexp
From vendorlib.U:
This variable is the ~name expanded version of vendorlib, so that you may use it directly in Makefiles or shell scripts.
vendorprefix
From vendorprefix.U:
This variable holds the full absolute path of the directory below
which the vendor will install add-on packages.
See INSTALL for usage and examples.
vendorprefixexp
From vendorprefix.U:
This variable holds the full absolute path of the directory below which the vendor will install add-on packages. Derived from vendorprefix.
version
From patchlevel.U:
The full version number of this package, such as 5.6.1 (or 5_6_1). This combines revision, patchlevel, and subversion to get the full version number, including any possible subversions. This is suitable for use as a directory name, and hence is filesystem dependent.
version_patchlevel_string
From patchlevel.U:
This is a string combining version, subversion and perl_patchlevel (if perl_patchlevel is non-zero). It is typically something like 'version 7 subversion 1' or 'version 7 subversion 1 patchlevel 11224' It is computed here to avoid duplication of code in myconfig.SH and lib/Config.pm.
versiononly
From versiononly.U:
If set, this symbol indicates that only the version-specific
components of a perl installation should be installed.
This may be useful for making a test installation of a new
version without disturbing the existing installation.
Setting versiononly is equivalent to setting installperl's -v option.
In particular, the non-versioned scripts and programs such as
a2p, c2ph, h2xs, pod2*, and perldoc are not installed
(see INSTALL for a more complete list). Nor are the man
pages installed.
Usually, this is undef.
vi
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
voidflags
From voidflags.U:
This variable contains the eventual value of the VOIDFLAGS symbol,
which indicates how much support of the void type is given by this
compiler. See VOIDFLAGS for more info.
xlibpth
From libpth.U:
This variable holds extra path (space-separated) used to find
libraries on this platform, for example CPU-specific libraries
(on multi-CPU platforms) may be listed here.
xs_apiversion
From xs_apiversion.U:
This variable contains the version of the oldest perl binary
compatible with the present perl. perl.c:incpush() and
lib/lib.pm will automatically search in $sitearch for older
directories across major versions back to xs_apiversion.
This is only useful if you have a perl library directory tree
structured like the default one.
See INSTALL for how this works.
The versioned site_perl directory was introduced in 5.005,
so that is the lowest possible value.
Since this can depend on compile time options
it is set by Configure. Other non-default sources
of potential incompatibility, such as multiplicity, threads,
debugging, 64bits, sfio, etc., are not checked for currently,
though in principle we could go snooping around in old
Config.pm files.
yacc
From yacc.U:
This variable holds the name of the compiler compiler we want to use in the Makefile. It can be yacc, byacc, or bison -y.
yaccflags
From yacc.U:
This variable contains any additional yacc flags desired by the user. It is up to the Makefile to use this.
zcat
From Loc.U:
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
zip
From Loc.U:
This variable is used internally by Configure to determine the
full pathname (if any) of the zip program. After Configure runs,
the value is reset to a plain zip and is not useful.
This module contains a good example of how to use tie to implement a cache and an example of how to make a tied variable readonly to those outside of it.