Current Perl documentation can be found at perldoc.perl.org.
Here is our local, out-dated (pre-5.6) version:
This variable conditionally defines HAS_SETREGID
if
setregid()
is available to
change the real and effective gid of the current process.
This variable conditionally defines HAS_SETRESGID
if
setresgid()
is available
to change the real, effective and saved gid of the current process.
This variable conditionally defines HAS_SETREUID
if
setresuid()
is available
to change the real, effective and saved uid of the current process.
This variable conditionally defines HAS_SETREUID
if
setreuid()
is available to
change the real and effective uid of the current process.
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.
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.
This variable conditionally defines HAS_SETSERVENT
if
setservent()
is
available.
This variable conditionally defines HAS_SETSID
if
setsid()
is available to set
the process group ID
.
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.
This variable conditionally defines the USE_SFIO
symbol, and indicates whether sfio is available (and should be used).
This variable conditionally defines the HAS_SHM
symbol, which indicates that the entire shm*(2) library is present.
This variable conditionally defines the HAS_SHMAT
symbol, which indicates to the
C program that the
shmat()
routine is available.
This variable conditionally defines the HAS_SHMAT_PROTOTYPE
symbol, which indicates that sys/shm.h has a prototype for shmat.
This variable conditionally defines the HAS_SHMCTL
symbol, which indicates to the
C program that the
shmctl()
routine is available.
This variable conditionally defines the HAS_SHMDT
symbol, which indicates to the
C program that the
shmdt()
routine is available.
This variable conditionally defines the HAS_SHMGET
symbol, which indicates to the
C program that the
shmget()
routine is available.
This variable conditionally defines the HAS_SIGACTION
symbol, which indicates that the Vr4
sigaction()
routine is
available.
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.
This variable conditionally defines HAS_SOCKET
, which indicates that the BSD
socket interface is supported.
This variable conditionally defines the HAS_SOCKETPAIR
symbol, which indicates that the BSD
socketpair()
is
supported.
This variable conditionally defines USE_STAT_BLOCKS
if this system has a stat structure declaring st_blksize and st_blocks.
This variable conditionally defines STDIO_CNT_LVALUE
if the
FILE_cnt
macro can be used as an lvalue.
This variable conditionally defines STDIO_PTR_LVALUE
if the
FILE_ptr
macro can be used as an lvalue.
This variable conditionally defines USE_STDIO_BASE
if this system has a FILE
structure declaring a usable _base field (or equivalent) in stdio.h.
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.
This variable conditionally defines HAS_STRCHR
if
strchr()
and
strrchr()
are available for string searching.
This variable conditionally defines HAS_STRCOLL
if
strcoll()
is available to
compare strings using collating information.
This variable conditionally defines the USE_STRUCT_COPY
symbol, which indicates to the
C program that this
C compiler knows how to copy structures.
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.
This variable conditionally defines HAS_STRERROR
if
strerror()
is available to
translate error numbers to strings.
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().
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.
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.
This variable conditionally defines HAS_STRXFRM
if
strxfrm()
is available to
transform strings.
This variable conditionally defines SETUID_SCRIPTS_ARE_SECURE_NOW
if setuid scripts can be secure. This test looks in /dev/fd/.
This variable conditionally defines the HAS_SYMLINK
symbol, which indicates to the
C program that the
symlink()
routine is available to create symbolic links.
This variable conditionally defines HAS_SYSCALL
if
syscall()
is available call
arbitrary system calls.
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.
This variable conditionally defines HAS_SYS_ERRNOLIST
if sys_errnolist[] is available to translate error numbers to the symbolic
name.
This variable conditionally defines HAS_SYS_ERRLIST
if sys_errlist[] is available to translate error numbers to strings.
This variable conditionally defines HAS_SYSTEM
if
system()
is available to
issue a shell command.
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
.
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
.
This variable conditionally defines HAS_TELLDIR
if
telldir()
is available.
This variable conditionally defines the HAS_TIME
symbol, which indicates that the
time()
routine exists. The
time()
routine is normaly provided on
UNIX
systems.
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>.
This variable conditionally defines HAS_TRUNCATE
if
truncate()
is available to
truncate files.
This variable conditionally defines HAS_TZNAME
if tzname[] is available to access timezone names.
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.
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.
This variable conditionally defines HAS_UNION_SEMUN
if the union semun is defined by including <sys/sem.h>.
This variable conditionally defines the HAS_VFORK
symbol, which indicates the
vfork()
routine is available.
This variable conditionally defines VOID_CLOSEDIR
if
closedir()
does not return
a value.
This variable conditionally defines VOIDSIG
if this system declares ``void (*signal(...))()'' in signal.h. The old way was to declare it as ``int (*signal(...))()''.
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().
This variable conditionally defines the HASVOLATILE
symbol, which indicates to the
C program that this
C compiler knows about the volatile declaration.
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.
This variable conditionally defines the
HAS_WAIT4 symbol, which indicates the
wait4()
routine is available.
This variable conditionally defines HAS_WAITPID
if
waitpid()
is available to
wait for child process.
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.
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.
This variable conditionally defines the symbol XENIX
, which alerts the
C program that it runs under Xenix.
This variable is be 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.
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.
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.
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.
This variable contains the extension that is to be used for the dynamically loaded modules that perl generaties.
This variable contains the name of the dynamic loading file that will be used with the package.
This variable contains the value of the DOUBLESIZE
symbol, which indicates to the
C program how many bytes there are in a double.
This variable holds a list of perlguts#item_XS extension files we want to link dynamically into the package. It is used by Makefile.
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).
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
This variable is be 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.
This variable is be 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.
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
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.
This is an old synonym for _exe.
This variable is be 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.
This variable holds a list of all extension files (both perlguts#item_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.
This variable is be used internally by Configure to determine the full
pathname (if any) of the find program. After Configure runs, the value is
reset to a plain find
and is not useful.
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.
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
This variable defines Fpos_t to be something like fpost_t, long, uint, or whatever type is used to declare file positions in libc.
This variable contains the return type of
free().
It is usually void, but
occasionally int.
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.
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.
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.
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.
This variable is be 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.
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.
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.
This variable is be 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.
This is variable gets set in various places to tell i_fcntl that <fcntl.h> should be included.
This is variable gets set in various places to tell i_sys_file that <sys/file.h> should be included.
Gives the type of hints used for previous answers. May be one of
default
, recommended
or previous
.
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.
This variable contains a flag which will tell the C compiler and loader to produce a program running with a huge memory model. If the huge model is not supported, contains the flag to produce large model programs. It is up to the Makefile to use this.
This variable conditionally defines the I_ARPA_INET
symbol, and indicates whether a
C program should include <arpa/inet.h>.
This variable conditionally defines the I_SYS_BSDIOCTL
symbol, which indicates to the
C program that <sys/bsdioctl.h> exists and
should be included.
This variable conditionally defines the I_DB
symbol, and indicates whether a
C program may include Berkeley's DB
include file <db.h>.
This variable conditionally defines the I_DBM
symbol, which indicates to the
C program that <dbm.h> exists and should be
included.
This variable conditionally defines I_DIRENT
, which indicates to the
C program that it should include <dirent.h>.
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.
This variable conditionally defines the I_DLFCN
symbol, which indicates to the
C program that <dlfcn.h> exists and should be
included.
This variable controls the value of I_FCNTL
(which tells the
C program to include <fcntl.h>).
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.
This variable conditionally defines the I_GDBM
symbol, which indicates to the
C program that <gdbm.h> exists and should be
included.
This variable conditionally defines the I_GRP
symbol, and indicates whether a
C program should include <grp.h>.
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.
This variable conditionally defines the I_LOCALE
symbol, and indicates whether a
C program should include <locale.h>.
This variable conditionally defines the I_MALLOC
symbol, and indicates whether a
C program should include <malloc.h>.
This variable conditionally defines the I_MATH
symbol, and indicates whether a
C program may include <math.h>.
This variable conditionally defines the I_MEMORY
symbol, and indicates whether a
C program should include <memory.h>.
This variable conditionally defines the I_NDBM
symbol, which indicates to the
C program that <ndbm.h> exists and should be
included.
This variable conditionally defines the I_NETDB
symbol, and indicates whether a
C program should include <netdb.h>.
This variable conditionally defines the I_NET_ERRNO
symbol, which indicates to the
C program that <net/errno.h> exists and should
be included.
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>.
This variable conditionally defines I_PWD
, which indicates to the
C program that it should include <pwd.h>.
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>.
This variable conditionally defines the I_SFIO
symbol, and indicates whether a
C program should include <sfio.h>.
This variable conditionally defines the I_SGTTY
symbol, which indicates to the
C program that it should include <sgtty.h>
rather than <termio.h>.
This variable conditionally defines the I_STDARG
symbol, which indicates to the
C program that <stdarg.h> exists and should be
included.
This variable conditionally defines the I_STDDEF
symbol, which indicates to the
C program that <stddef.h> exists and should be
included.
This variable conditionally defines the I_STDLIB
symbol, which indicates to the
C program that <stdlib.h> exists and should be
included.
This variable conditionally defines the I_STRING
symbol, which indicates that <string.h> should be included rather
than <strings.h>.
This variable conditionally defines the I_SYS_DIR
symbol, and indicates whether a
C program should include <sys/dir.h>.
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.
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>.
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>.
This variable conditionally defines the I_SYS_IOCTL
symbol, which indicates to the
C program that <sys/ioctl.h> exists and should
be included.
This variable conditionally defines the I_SYS_NDIR
symbol, and indicates whether a
C program should include <sys/ndir.h>.
This variable conditionally defines the I_SYS_PARAM
symbol, and indicates whether a
C program should include <sys/param.h>.
This variable conditionally defines the I_SYS_RESOURCE
symbol, and indicates whether a
C program should include <sys/resource.h>.
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.
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>.
This variable conditionally defines the I_SYS_STAT
symbol, and indicates whether a
C program should include <sys/stat.h>.
This variable conditionally defines I_SYS_TIME
, which indicates to the
C program that it should include <sys/time.h>.
This variable conditionally defines I_SYS_TIME_KERNEL
, which indicates to the
C program that it should include <sys/time.h> with KERNEL
defined.
This variable conditionally defines the I_SYS_TIMES
symbol, and indicates whether a
C program should include <sys/times.h>.
This variable conditionally defines the I_SYS_TYPES
symbol, and indicates whether a
C program should include <sys/types.h>.
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.
This variable conditionally defines I_SYS_WAIT
, which indicates to the
C program that it should include <sys/wait.h>.
This variable conditionally defines the I_TERMIO
symbol, which indicates to the
C program that it should include <termio.h>
rather than <sgtty.h>.
This variable conditionally defines the I_TERMIOS
symbol, which indicates to the
C program that the POSIX
<termios.h> file is to be included.
This variable conditionally defines I_TIME
, which indicates to the
C program that it should include <time.h>.
This variable conditionally defines the I_UNISTD
symbol, and indicates whether a
C program should include <unistd.h>.
This variable conditionally defines the I_UTIME
symbol, and indicates whether a
C program should include <utime.h>.
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.
This variable conditionally defines I_VARARGS
, which indicates to the
C program that it should include <varargs.h>.
Contains the name of the header to be included to get va_dcl definition. Typically one of varargs.h or stdarg.h.
This variable conditionally defines the I_VFORK
symbol, and indicates whether a
C program should include vfork.h.
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.
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
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.
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.
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.
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.
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.
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.
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.
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.
This variable contains the value of the INTSIZE
symbol, which indicates to the
C program how many bytes there are in an int.
This variable holds a list of all perlguts#item_XS extensions included in the package.
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
This variable contains a flag which will tell the C compiler and loader to produce a program running with a large memory model. It is up to the Makefile to use this.
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.
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.
This variable contains any additional C loader flags desired by the user. It is up to the Makefile to use this.
This variable is be 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.
This is an old synonym for _a.
This variable contains the location of the C library.
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.
This variable holds the general path used to find libraries. It is intended to be used by other units.
This variable holds the additional libraries we want to use. It is up to the Makefile to deal with it.
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.
This variable is be used internally by Configure to determine the full
pathname (if any) of the line program. After Configure runs, the value is
reset to a plain line
and is not useful.
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
This variable contains any additional C partial linker flags desired by the user. It is up to the Makefile to use this.
This variable is be 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.
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
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.
This variable holds the paths used to find local libraries. It is prepended to libpth, and is intended to be easily set from the command line.
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.
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.
This variable contains the value of the LONGSIZE
symbol, which indicates to the
C program how many bytes there are in a long.
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
This variable is be 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.
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).
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
This variable is be 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.
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.
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.
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.
This variable contains the kind of ptr returned by malloc and realloc.
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.
This variable is the same as the man1dir variable, but is filename expanded at configuration time, for convenient use in makefiles.
This variable contains the extension that the manual page should have: one
of n
, l
, or 1
. The Makefile must supply the .. See man1dir.
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.
This variable is the same as the man3dir variable, but is filename expanded at configuration time, for convenient use in makefiles.
This variable contains the extension that the manual page should have: one
of n
, l
, or 3
. The Makefile must supply the .. See man3dir.
This variable contains a flag which will tell the C compiler and loader to produce a program running with a medium memory model. If the medium model is not supported, contains the flag to produce large model programs. It is up to the Makefile to use this.
This variable holds the environment type for the mips system. Possible values are ``BSD 4.3'' and ``System V''.
This variable is be 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.
This variable contains the list of memory models supported by this system. Possible component values are none, split, unsplit, small, medium, large, and huge. The component values are space separated.
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.
This variable is be 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.
This variable is defined but not used by Configure. The value is a plain '' and is not useful.
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.
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.
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.
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.
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".
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.
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.
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.
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.
This variable is be 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.
This variable holds the options that may be necessary for nm.
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.
This variable holds a list of all non-xs extensions included in the package. All of them will be built.
This variable is be 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.