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autoconf/acspecific.m4
Lars J. Aas b0250ac156 Copyright 2001
2001-04-15 16:20:30 +00:00

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# This file is part of Autoconf. -*- Autoconf -*-
# Macros that test for specific features.
# Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001
# Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.
#
# As a special exception, the Free Software Foundation gives unlimited
# permission to copy, distribute and modify the configure scripts that
# are the output of Autoconf. You need not follow the terms of the GNU
# General Public License when using or distributing such scripts, even
# though portions of the text of Autoconf appear in them. The GNU
# General Public License (GPL) does govern all other use of the material
# that constitutes the Autoconf program.
#
# Certain portions of the Autoconf source text are designed to be copied
# (in certain cases, depending on the input) into the output of
# Autoconf. We call these the "data" portions. The rest of the Autoconf
# source text consists of comments plus executable code that decides which
# of the data portions to output in any given case. We call these
# comments and executable code the "non-data" portions. Autoconf never
# copies any of the non-data portions into its output.
#
# This special exception to the GPL applies to versions of Autoconf
# released by the Free Software Foundation. When you make and
# distribute a modified version of Autoconf, you may extend this special
# exception to the GPL to apply to your modified version as well, *unless*
# your modified version has the potential to copy into its output some
# of the text that was the non-data portion of the version that you started
# with. (In other words, unless your change moves or copies text from
# the non-data portions to the data portions.) If your modification has
# such potential, you must delete any notice of this special exception
# to the GPL from your modified version.
#
# Written by David MacKenzie, with help from
# Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
# Roland McGrath, Noah Friedman, david d zuhn, and many others.
## --------------------- ##
## Checks for programs. ##
## --------------------- ##
# _AC_PROG_ECHO
# -------------
# Check whether to use -n, \c, or newline-tab to separate
# checking messages from result messages.
# Don't try to cache, since the results of this macro are needed to
# display the checking message. In addition, caching something used once
# has little interest.
# Idea borrowed from dist 3.0. Use `*c*,', not `*c,' because if `\c'
# failed there is also a new-line to match.
m4_define([_AC_PROG_ECHO],
[case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in
*c*,-n*) ECHO_N= ECHO_C='
' ECHO_T=' ' ;;
*c*,* ) ECHO_N=-n ECHO_C= ECHO_T= ;;
*) ECHO_N= ECHO_C='\c' ECHO_T= ;;
esac
AC_SUBST(ECHO_C)dnl
AC_SUBST(ECHO_N)dnl
AC_SUBST(ECHO_T)dnl
])# _AC_PROG_ECHO
# AC_PROG_MAKE_SET
# ----------------
# Define SET_MAKE to set ${MAKE} if make doesn't.
AC_DEFUN([AC_PROG_MAKE_SET],
[AC_MSG_CHECKING([whether ${MAKE-make} sets \${MAKE}])
set dummy ${MAKE-make}; ac_make=`echo "$[2]" | sed 'y,./+-,__p_,'`
AC_CACHE_VAL(ac_cv_prog_make_${ac_make}_set,
[cat >conftest.make <<\EOF
all:
@echo 'ac_maketemp="${MAKE}"'
EOF
# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
eval `${MAKE-make} -f conftest.make 2>/dev/null | grep temp=`
if test -n "$ac_maketemp"; then
eval ac_cv_prog_make_${ac_make}_set=yes
else
eval ac_cv_prog_make_${ac_make}_set=no
fi
rm -f conftest.make])dnl
if eval "test \"`echo '$ac_cv_prog_make_'${ac_make}_set`\" = yes"; then
AC_MSG_RESULT([yes])
SET_MAKE=
else
AC_MSG_RESULT([no])
SET_MAKE="MAKE=${MAKE-make}"
fi
AC_SUBST([SET_MAKE])dnl
])# AC_PROG_MAKE_SET
# AC_PROG_RANLIB
# --------------
AC_DEFUN([AC_PROG_RANLIB],
[AC_CHECK_TOOL(RANLIB, ranlib, :)])
# Check for mawk first since it's generally faster.
AC_DEFUN([AC_PROG_AWK],
[AC_CHECK_PROGS(AWK, mawk gawk nawk awk, )])
# AC_PROG_YACC
# ------------
AC_DEFUN([AC_PROG_YACC],
[AC_CHECK_PROGS(YACC, 'bison -y' byacc, yacc)])
# AC_PROG_LEX
# -----------
# Look for flex or lex. Set its associated library to LEXLIB.
# Check if lex declares yytext as a char * by default, not a char[].
AC_DEFUN_ONCE([AC_PROG_LEX],
[AC_CHECK_PROGS(LEX, flex lex, :)
if test -z "$LEXLIB"
then
AC_CHECK_LIB(fl, yywrap, LEXLIB="-lfl",
[AC_CHECK_LIB(l, yywrap, LEXLIB="-ll")])
fi
AC_SUBST(LEXLIB)
if test "x$LEX" != "x:"; then
_AC_DECL_YYTEXT
fi])
# _AC_DECL_YYTEXT
# ---------------
# Check if lex declares yytext as a char * by default, not a char[].
m4_define([_AC_DECL_YYTEXT],
[AC_CACHE_CHECK(lex output file root, ac_cv_prog_lex_root,
[# The minimal lex program is just a single line: %%. But some broken lexes
# (Solaris, I think it was) want two %% lines, so accommodate them.
echo '%%
%%' | $LEX
if test -f lex.yy.c; then
ac_cv_prog_lex_root=lex.yy
elif test -f lexyy.c; then
ac_cv_prog_lex_root=lexyy
else
AC_MSG_ERROR([cannot find output from $LEX; giving up])
fi])
LEX_OUTPUT_ROOT=$ac_cv_prog_lex_root
AC_SUBST(LEX_OUTPUT_ROOT)dnl
AC_CACHE_CHECK(whether yytext is a pointer, ac_cv_prog_lex_yytext_pointer,
[# POSIX says lex can declare yytext either as a pointer or an array; the
# default is implementation-dependent. Figure out which it is, since
# not all implementations provide the %pointer and %array declarations.
ac_cv_prog_lex_yytext_pointer=no
echo 'extern char *yytext;' >>$LEX_OUTPUT_ROOT.c
ac_save_LIBS=$LIBS
LIBS="$LIBS $LEXLIB"
AC_LINK_IFELSE([`cat $LEX_OUTPUT_ROOT.c`], ac_cv_prog_lex_yytext_pointer=yes)
LIBS=$ac_save_LIBS
rm -f "${LEX_OUTPUT_ROOT}.c"
])
dnl
if test $ac_cv_prog_lex_yytext_pointer = yes; then
AC_DEFINE(YYTEXT_POINTER, 1,
[Define if `lex' declares `yytext' as a `char *' by default,
not a `char[]'.])
fi
])# _AC_DECL_YYTEXT
# Require AC_PROG_LEX in case some people were just calling this macro.
AU_DEFUN([AC_DECL_YYTEXT],
[AC_PROG_LEX])
# AC_PROG_INSTALL
# ---------------
AC_DEFUN([AC_PROG_INSTALL],
[AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
# Find a good install program. We prefer a C program (faster),
# so one script is as good as another. But avoid the broken or
# incompatible versions:
# SysV /etc/install, /usr/sbin/install
# SunOS /usr/etc/install
# IRIX /sbin/install
# AIX /bin/install
# AmigaOS /C/install, which installs bootblocks on floppy discs
# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
# AFS /usr/afsws/bin/install, which mishandles nonexistent args
# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
# ./install, which can be erroneously created by make from ./install.sh.
AC_MSG_CHECKING([for a BSD compatible install])
if test -z "$INSTALL"; then
AC_CACHE_VAL(ac_cv_path_install,
[ ac_save_IFS=$IFS; IFS=$ac_path_separator
for ac_dir in $PATH; do
IFS=$ac_save_IFS
# Account for people who put trailing slashes in PATH elements.
case $ac_dir/ in
/ | ./ | .// | /[cC]/* \
| /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* \
| /usr/ucb/* ) ;;
*)
# OSF1 and SCO ODT 3.0 have their own names for install.
# Don't use installbsd from OSF since it installs stuff as root
# by default.
for ac_prog in ginstall scoinst install; do
if AS_EXECUTABLE_P(["$ac_dir/$ac_prog"]); then
if test $ac_prog = install &&
grep dspmsg "$ac_dir/$ac_prog" >/dev/null 2>&1; then
# AIX install. It has an incompatible calling convention.
:
elif test $ac_prog = install &&
grep pwplus "$ac_dir/$ac_prog" >/dev/null 2>&1; then
# program-specific install script used by HP pwplus--don't use.
:
else
ac_cv_path_install="$ac_dir/$ac_prog -c"
break 2
fi
fi
done
;;
esac
done
])dnl
if test "${ac_cv_path_install+set}" = set; then
INSTALL=$ac_cv_path_install
else
# As a last resort, use the slow shell script. We don't cache a
# path for INSTALL within a source directory, because that will
# break other packages using the cache if that directory is
# removed, or if the path is relative.
INSTALL=$ac_install_sh
fi
fi
dnl We do special magic for INSTALL instead of AC_SUBST, to get
dnl relative paths right.
AC_MSG_RESULT([$INSTALL])
# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
# It thinks the first close brace ends the variable substitution.
test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'
AC_SUBST(INSTALL_PROGRAM)dnl
test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'
AC_SUBST(INSTALL_SCRIPT)dnl
test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'
AC_SUBST(INSTALL_DATA)dnl
])# AC_PROG_INSTALL
# AC_PROG_LN_S
# ------------
AC_DEFUN([AC_PROG_LN_S],
[AC_MSG_CHECKING([whether ln -s works])
AC_SUBST([LN_S], [$as_ln_s])dnl
if test "$LN_S" = "ln -s"; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no, using $LN_S])
fi
])# AC_PROG_LN_S
# AC_RSH
# ------
# I don't know what it used to do, but it no longer does.
AU_DEFUN([AC_RSH],
[AC_DIAGNOSE([obsolete], [$0: is no longer supported.
Remove this warning when you adjust the code.])])
## ------------------------- ##
## Checks for declarations. ##
## ------------------------- ##
# AC_DECL_SYS_SIGLIST
# -------------------
AC_DEFUN([AC_DECL_SYS_SIGLIST],
[AC_CACHE_CHECK([for sys_siglist declaration in signal.h or unistd.h],
ac_cv_decl_sys_siglist,
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([#include <sys/types.h>
#include <signal.h>
/* NetBSD declares sys_siglist in unistd.h. */
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
], [char *msg = *(sys_siglist + 1);])],
[ac_cv_decl_sys_siglist=yes],
[ac_cv_decl_sys_siglist=no])])
if test $ac_cv_decl_sys_siglist = yes; then
AC_DEFINE(SYS_SIGLIST_DECLARED, 1,
[Define if `sys_siglist' is declared by <signal.h> or <unistd.h>.])
fi
])# AC_DECL_SYS_SIGLIST
## -------------------------------------- ##
## Checks for operating system services. ##
## -------------------------------------- ##
# AC_SYS_INTERPRETER
# ------------------
AC_DEFUN([AC_SYS_INTERPRETER],
[AC_CACHE_CHECK(whether @%:@! works in shell scripts, ac_cv_sys_interpreter,
[echo '#! /bin/cat
exit 69
' >conftest
chmod u+x conftest
(SHELL=/bin/sh; export SHELL; ./conftest >/dev/null)
if test $? -ne 69; then
ac_cv_sys_interpreter=yes
else
ac_cv_sys_interpreter=no
fi
rm -f conftest])
interpval=$ac_cv_sys_interpreter
])
AU_DEFUN([AC_HAVE_POUNDBANG],
[AC_SYS_INTERPRETER
AC_DIAGNOSE([obsolete],
[$0: Remove this warning when you adjust your code to use
`AC_SYS_INTERPRETER'.])])
AU_DEFUN([AC_ARG_ARRAY],
[AC_DIAGNOSE([obsolete],
[$0: no longer implemented: don't do unportable things
with arguments. Remove this warning when you adjust your code.])])
# _AC_SYS_LARGEFILE_TEST_INCLUDES
# -------------------------------
m4_define([_AC_SYS_LARGEFILE_TEST_INCLUDES],
[@%:@include <sys/types.h>
/* Check that off_t can represent 2**63 - 1 correctly.
We can't simply define LARGE_OFF_T to be 9223372036854775807,
since some C++ compilers masquerading as C compilers
incorrectly reject 9223372036854775807. */
@%:@define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
int off_t_is_large[[(LARGE_OFF_T % 2147483629 == 721
&& LARGE_OFF_T % 2147483647 == 1)
? 1 : -1]];[]dnl
])
# _AC_SYS_LARGEFILE_MACRO_VALUE(C-MACRO, VALUE,
# CACHE-VAR,
# DESCRIPTION,
# [INCLUDES], [FUNCTION-BODY])
# ----------------------------------------------------------
m4_define([_AC_SYS_LARGEFILE_MACRO_VALUE],
[AC_CACHE_CHECK([for $1 value needed for large files], [$3],
[while :; do
$3=no
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$5], [$6])],
[break])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([@%:@define $1 $2
$5], [$6])],
[$3=$2; break])
break
done])
if test "$$3" != no; then
AC_DEFINE_UNQUOTED([$1], [$$3], [$4])
fi
rm -f conftest*[]dnl
])# _AC_SYS_LARGEFILE_MACRO_VALUE
# AC_SYS_LARGEFILE
# ----------------
# By default, many hosts won't let programs access large files;
# one must use special compiler options to get large-file access to work.
# For more details about this brain damage please see:
# http://www.sas.com/standards/large.file/x_open.20Mar96.html
AC_DEFUN([AC_SYS_LARGEFILE],
[AC_ARG_ENABLE(largefile,
[ --disable-largefile omit support for large files])
if test "$enable_largefile" != no; then
AC_CACHE_CHECK([for special C compiler options needed for large files],
ac_cv_sys_largefile_CC,
[ac_cv_sys_largefile_CC=no
if test "$GCC" != yes; then
ac_save_CC=$CC
while :; do
# IRIX 6.2 and later do not support large files by default,
# so use the C compiler's -n32 option if that helps.
AC_LANG_CONFTEST([AC_LANG_PROGRAM([_AC_SYS_LARGEFILE_TEST_INCLUDES])])
AC_COMPILE_IFELSE([], [break])
CC="$CC -n32"
AC_COMPILE_IFELSE([], [ac_cv_sys_largefile_CC=' -n32'; break])
break
done
CC=$ac_save_CC
rm -f conftest.$ac_ext
fi])
if test "$ac_cv_sys_largefile_CC" != no; then
CC=$CC$ac_cv_sys_largefile_CC
fi
_AC_SYS_LARGEFILE_MACRO_VALUE(_FILE_OFFSET_BITS, 64,
ac_cv_sys_file_offset_bits,
[Number of bits in a file offset, on hosts where this is settable.],
[_AC_SYS_LARGEFILE_TEST_INCLUDES])
_AC_SYS_LARGEFILE_MACRO_VALUE(_LARGE_FILES, 1,
ac_cv_sys_large_files,
[Define for large files, on AIX-style hosts.],
[_AC_SYS_LARGEFILE_TEST_INCLUDES])
fi
])# AC_SYS_LARGEFILE
# AC_SYS_LONG_FILE_NAMES
# ----------------------
# Security: use a temporary directory as the most portable way of
# creating files in /tmp securely. Removing them leaves a race
# condition, set -C is not portably guaranteed to use O_EXCL, so still
# leaves a race, and not all systems have the `mktemp' utility. We
# still test for existence first in case of broken systems where the
# mkdir succeeds even when the directory exists. Broken systems may
# retain a race, but they probably have other security problems
# anyway; this should be secure on well-behaved systems. In any case,
# use of `mktemp' is probably inappropriate here since it would fail in
# attempting to create different file names differing after the 14th
# character on file systems without long file names.
AC_DEFUN([AC_SYS_LONG_FILE_NAMES],
[AC_CACHE_CHECK(for long file names, ac_cv_sys_long_file_names,
[ac_cv_sys_long_file_names=yes
# Test for long file names in all the places we know might matter:
# . the current directory, where building will happen
# $prefix/lib where we will be installing things
# $exec_prefix/lib likewise
# eval it to expand exec_prefix.
# $TMPDIR if set, where it might want to write temporary files
# if $TMPDIR is not set:
# /tmp where it might want to write temporary files
# /var/tmp likewise
# /usr/tmp likewise
if test -n "$TMPDIR" && test -d "$TMPDIR" && test -w "$TMPDIR"; then
ac_tmpdirs=$TMPDIR
else
ac_tmpdirs='/tmp /var/tmp /usr/tmp'
fi
for ac_dir in . $ac_tmpdirs `eval echo $prefix/lib $exec_prefix/lib` ; do
test -d $ac_dir || continue
test -w $ac_dir || continue # It is less confusing to not echo anything here.
ac_xdir=$ac_dir/cf$$
(umask 077 && mkdir $ac_xdir 2>/dev/null) || continue
ac_tf1=$ac_xdir/conftest9012345
ac_tf2=$ac_xdir/conftest9012346
(echo 1 >$ac_tf1) 2>/dev/null
(echo 2 >$ac_tf2) 2>/dev/null
ac_val=`cat $ac_tf1 2>/dev/null`
if test ! -f $ac_tf1 || test "$ac_val" != 1; then
ac_cv_sys_long_file_names=no
rm -rf $ac_xdir 2>/dev/null
break
fi
rm -rf $ac_xdir 2>/dev/null
done])
if test $ac_cv_sys_long_file_names = yes; then
AC_DEFINE(HAVE_LONG_FILE_NAMES, 1,
[Define if you support file names longer than 14 characters.])
fi
])
# AC_SYS_RESTARTABLE_SYSCALLS
# ---------------------------
# If the system automatically restarts a system call that is
# interrupted by a signal, define `HAVE_RESTARTABLE_SYSCALLS'.
AC_DEFUN([AC_SYS_RESTARTABLE_SYSCALLS],
[AC_REQUIRE([AC_HEADER_SYS_WAIT])dnl
AC_CHECK_HEADERS(unistd.h)
AC_CACHE_CHECK(for restartable system calls, ac_cv_sys_restartable_syscalls,
[AC_RUN_IFELSE([AC_LANG_SOURCE(
[/* Exit 0 (true) if wait returns something other than -1,
i.e. the pid of the child, which means that wait was restarted
after getting the signal. */
#include <sys/types.h>
#include <signal.h>
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
#if HAVE_SYS_WAIT_H
# include <sys/wait.h>
#endif
/* Some platforms explicitly require an extern "C" signal handler
when using C++. */
#ifdef __cplusplus
extern "C" void ucatch (int dummy) { }
#else
void ucatch (dummy) int dummy; { }
#endif
int
main ()
{
int i = fork (), status;
if (i == 0)
{
sleep (3);
kill (getppid (), SIGINT);
sleep (3);
exit (0);
}
signal (SIGINT, ucatch);
status = wait (&i);
if (status == -1)
wait (&i);
exit (status == -1);
}])],
[ac_cv_sys_restartable_syscalls=yes],
[ac_cv_sys_restartable_syscalls=no])])
if test $ac_cv_sys_restartable_syscalls = yes; then
AC_DEFINE(HAVE_RESTARTABLE_SYSCALLS, 1,
[Define if system calls automatically restart after interruption
by a signal.])
fi
])# AC_SYS_RESTARTABLE_SYSCALLS
# AC_SYS_POSIX_TERMIOS
# --------------------
AC_DEFUN([AC_SYS_POSIX_TERMIOS],
[AC_CACHE_CHECK([POSIX termios], ac_cv_sys_posix_termios,
[AC_TRY_LINK([#include <sys/types.h>
#include <unistd.h>
@%:@include <termios.h>],
[/* SunOS 4.0.3 has termios.h but not the library calls. */
tcgetattr(0, 0);],
ac_cv_sys_posix_termios=yes,
ac_cv_sys_posix_termios=no)])
])# AC_SYS_POSIX_TERMIOS
## --------------------- ##
## Checks for X window. ##
## --------------------- ##
# _AC_PATH_X_XMKMF
# ----------------
# Internal subroutine of _AC_PATH_X.
# Set ac_x_includes and/or ac_x_libraries.
m4_define([_AC_PATH_X_XMKMF],
[rm -fr conftest.dir
if mkdir conftest.dir; then
cd conftest.dir
# Make sure to not put "make" in the Imakefile rules, since we grep it out.
cat >Imakefile <<'EOF'
acfindx:
@echo 'ac_im_incroot="${INCROOT}"; ac_im_usrlibdir="${USRLIBDIR}"; ac_im_libdir="${LIBDIR}"'
EOF
if (xmkmf) >/dev/null 2>/dev/null && test -f Makefile; then
# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
eval `${MAKE-make} acfindx 2>/dev/null | grep -v make`
# Open Windows xmkmf reportedly sets LIBDIR instead of USRLIBDIR.
for ac_extension in a so sl; do
if test ! -f $ac_im_usrlibdir/libX11.$ac_extension &&
test -f $ac_im_libdir/libX11.$ac_extension; then
ac_im_usrlibdir=$ac_im_libdir; break
fi
done
# Screen out bogus values from the imake configuration. They are
# bogus both because they are the default anyway, and because
# using them would break gcc on systems where it needs fixed includes.
case $ac_im_incroot in
/usr/include) ;;
*) test -f "$ac_im_incroot/X11/Xos.h" && ac_x_includes=$ac_im_incroot;;
esac
case $ac_im_usrlibdir in
/usr/lib | /lib) ;;
*) test -d "$ac_im_usrlibdir" && ac_x_libraries=$ac_im_usrlibdir ;;
esac
fi
cd ..
rm -fr conftest.dir
fi
])# _AC_PATH_X_XMKMF
# _AC_PATH_X_DIRECT
# -----------------
# Internal subroutine of _AC_PATH_X.
# Set ac_x_includes and/or ac_x_libraries.
m4_define([_AC_PATH_X_DIRECT],
[# Standard set of common directories for X headers.
# Check X11 before X11Rn because it is often a symlink to the current release.
ac_x_header_dirs='
/usr/X11/include
/usr/X11R6/include
/usr/X11R5/include
/usr/X11R4/include
/usr/include/X11
/usr/include/X11R6
/usr/include/X11R5
/usr/include/X11R4
/usr/local/X11/include
/usr/local/X11R6/include
/usr/local/X11R5/include
/usr/local/X11R4/include
/usr/local/include/X11
/usr/local/include/X11R6
/usr/local/include/X11R5
/usr/local/include/X11R4
/usr/X386/include
/usr/x386/include
/usr/XFree86/include/X11
/usr/include
/usr/local/include
/usr/unsupported/include
/usr/athena/include
/usr/local/x11r5/include
/usr/lpp/Xamples/include
/usr/openwin/include
/usr/openwin/share/include'
if test "$ac_x_includes" = no; then
# Guess where to find include files, by looking for Intrinsic.h.
# First, try using that file with no special directory specified.
AC_PREPROC_IFELSE([AC_LANG_SOURCE([@%:@include <X11/Intrinsic.h>])],
[# We can compile using X headers with no special include directory.
ac_x_includes=],
[for ac_dir in $ac_x_header_dirs; do
if test -r "$ac_dir/X11/Intrinsic.h"; then
ac_x_includes=$ac_dir
break
fi
done])
fi # $ac_x_includes = no
if test "$ac_x_libraries" = no; then
# Check for the libraries.
# See if we find them without any special options.
# Don't add to $LIBS permanently.
ac_save_LIBS=$LIBS
LIBS="-lXt $LIBS"
AC_TRY_LINK([@%:@include <X11/Intrinsic.h>], [XtMalloc (0)],
[LIBS=$ac_save_LIBS
# We can link X programs with no special library path.
ac_x_libraries=],
[LIBS=$ac_save_LIBS
for ac_dir in `echo "$ac_x_includes $ac_x_header_dirs" | sed s/include/lib/g`
do
# Don't even attempt the hair of trying to link an X program!
for ac_extension in a so sl; do
if test -r $ac_dir/libXt.$ac_extension; then
ac_x_libraries=$ac_dir
break 2
fi
done
done])
fi # $ac_x_libraries = no
])# _AC_PATH_X_DIRECT
# _AC_PATH_X
# ----------
# Compute ac_cv_have_x.
AC_DEFUN([_AC_PATH_X],
[AC_CACHE_VAL(ac_cv_have_x,
[# One or both of the vars are not set, and there is no cached value.
ac_x_includes=no ac_x_libraries=no
_AC_PATH_X_XMKMF
_AC_PATH_X_DIRECT
if test "$ac_x_includes" = no || test "$ac_x_libraries" = no; then
# Didn't find X anywhere. Cache the known absence of X.
ac_cv_have_x="have_x=no"
else
# Record where we found X for the cache.
ac_cv_have_x="have_x=yes \
ac_x_includes=$ac_x_includes ac_x_libraries=$ac_x_libraries"
fi])dnl
])
# AC_PATH_X
# ---------
# If we find X, set shell vars x_includes and x_libraries to the
# paths, otherwise set no_x=yes.
# Uses ac_ vars as temps to allow command line to override cache and checks.
# --without-x overrides everything else, but does not touch the cache.
AC_DEFUN([AC_PATH_X],
[dnl Document the X abnormal options inherited from history.
m4_divert_once([HELP_BEGIN], [
X features:
--x-includes=DIR X include files are in DIR
--x-libraries=DIR X library files are in DIR])dnl
AC_MSG_CHECKING([for X])
AC_ARG_WITH(x, [ --with-x use the X Window System])
# $have_x is `yes', `no', `disabled', or empty when we do not yet know.
if test "x$with_x" = xno; then
# The user explicitly disabled X.
have_x=disabled
else
if test "x$x_includes" != xNONE && test "x$x_libraries" != xNONE; then
# Both variables are already set.
have_x=yes
else
_AC_PATH_X
fi
eval "$ac_cv_have_x"
fi # $with_x != no
if test "$have_x" != yes; then
AC_MSG_RESULT([$have_x])
no_x=yes
else
# If each of the values was on the command line, it overrides each guess.
test "x$x_includes" = xNONE && x_includes=$ac_x_includes
test "x$x_libraries" = xNONE && x_libraries=$ac_x_libraries
# Update the cache value to reflect the command line values.
ac_cv_have_x="have_x=yes \
ac_x_includes=$x_includes ac_x_libraries=$x_libraries"
AC_MSG_RESULT([libraries $x_libraries, headers $x_includes])
fi
])# AC_PATH_X
# AC_PATH_XTRA
# ------------
# Find additional X libraries, magic flags, etc.
AC_DEFUN([AC_PATH_XTRA],
[AC_REQUIRE([AC_PATH_X])dnl
if test "$no_x" = yes; then
# Not all programs may use this symbol, but it does not hurt to define it.
AC_DEFINE([X_DISPLAY_MISSING], 1,
[Define if the X Window System is missing or not being used.])
X_CFLAGS= X_PRE_LIBS= X_LIBS= X_EXTRA_LIBS=
else
if test -n "$x_includes"; then
X_CFLAGS="$X_CFLAGS -I$x_includes"
fi
# It would also be nice to do this for all -L options, not just this one.
if test -n "$x_libraries"; then
X_LIBS="$X_LIBS -L$x_libraries"
dnl FIXME: banish uname from this macro!
# For Solaris; some versions of Sun CC require a space after -R and
# others require no space. Words are not sufficient . . . .
case `(uname -sr) 2>/dev/null` in
"SunOS 5"*)
AC_MSG_CHECKING([whether -R must be followed by a space])
ac_xsave_LIBS=$LIBS; LIBS="$LIBS -R$x_libraries"
AC_LINK_IFELSE([AC_LANG_PROGRAM()], ac_R_nospace=yes, ac_R_nospace=no)
if test $ac_R_nospace = yes; then
AC_MSG_RESULT([no])
X_LIBS="$X_LIBS -R$x_libraries"
else
LIBS="$ac_xsave_LIBS -R $x_libraries"
AC_LINK_IFELSE([AC_LANG_PROGRAM()], ac_R_space=yes, ac_R_space=no)
if test $ac_R_space = yes; then
AC_MSG_RESULT([yes])
X_LIBS="$X_LIBS -R $x_libraries"
else
AC_MSG_RESULT([neither works])
fi
fi
LIBS=$ac_xsave_LIBS
esac
fi
# Check for system-dependent libraries X programs must link with.
# Do this before checking for the system-independent R6 libraries
# (-lICE), since we may need -lsocket or whatever for X linking.
if test "$ISC" = yes; then
X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl_s -linet"
else
# Martyn Johnson says this is needed for Ultrix, if the X
# libraries were built with DECnet support. And Karl Berry says
# the Alpha needs dnet_stub (dnet does not exist).
AC_CHECK_LIB(dnet, dnet_ntoa, [X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet"])
if test $ac_cv_lib_dnet_dnet_ntoa = no; then
AC_CHECK_LIB(dnet_stub, dnet_ntoa,
[X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet_stub"])
fi
# msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT,
# to get the SysV transport functions.
# Chad R. Larson says the Pyramis MIS-ES running DC/OSx (SVR4)
# needs -lnsl.
# The nsl library prevents programs from opening the X display
# on Irix 5.2, according to T.E. Dickey.
# The functions gethostbyname, getservbyname, and inet_addr are
# in -lbsd on LynxOS 3.0.1/i386, according to Lars Hecking.
AC_CHECK_FUNC(gethostbyname)
if test $ac_cv_func_gethostbyname = no; then
AC_CHECK_LIB(nsl, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl")
if test $ac_cv_lib_nsl_gethostbyname = no; then
AC_CHECK_LIB(bsd, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lbsd")
fi
fi
# lieder@skyler.mavd.honeywell.com says without -lsocket,
# socket/setsockopt and other routines are undefined under SCO ODT
# 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary
# on later versions), says Simon Leinen: it contains gethostby*
# variants that don't use the nameserver (or something). -lsocket
# must be given before -lnsl if both are needed. We assume that
# if connect needs -lnsl, so does gethostbyname.
AC_CHECK_FUNC(connect)
if test $ac_cv_func_connect = no; then
AC_CHECK_LIB(socket, connect, X_EXTRA_LIBS="-lsocket $X_EXTRA_LIBS", ,
$X_EXTRA_LIBS)
fi
# Guillermo Gomez says -lposix is necessary on A/UX.
AC_CHECK_FUNC(remove)
if test $ac_cv_func_remove = no; then
AC_CHECK_LIB(posix, remove, X_EXTRA_LIBS="$X_EXTRA_LIBS -lposix")
fi
# BSDI BSD/OS 2.1 needs -lipc for XOpenDisplay.
AC_CHECK_FUNC(shmat)
if test $ac_cv_func_shmat = no; then
AC_CHECK_LIB(ipc, shmat, X_EXTRA_LIBS="$X_EXTRA_LIBS -lipc")
fi
fi
# Check for libraries that X11R6 Xt/Xaw programs need.
ac_save_LDFLAGS=$LDFLAGS
test -n "$x_libraries" && LDFLAGS="$LDFLAGS -L$x_libraries"
# SM needs ICE to (dynamically) link under SunOS 4.x (so we have to
# check for ICE first), but we must link in the order -lSM -lICE or
# we get undefined symbols. So assume we have SM if we have ICE.
# These have to be linked with before -lX11, unlike the other
# libraries we check for below, so use a different variable.
# John Interrante, Karl Berry
AC_CHECK_LIB(ICE, IceConnectionNumber,
[X_PRE_LIBS="$X_PRE_LIBS -lSM -lICE"], , $X_EXTRA_LIBS)
LDFLAGS=$ac_save_LDFLAGS
fi
AC_SUBST(X_CFLAGS)dnl
AC_SUBST(X_PRE_LIBS)dnl
AC_SUBST(X_LIBS)dnl
AC_SUBST(X_EXTRA_LIBS)dnl
])# AC_PATH_XTRA
## ------------------------------------ ##
## Checks for not-quite-Unix variants. ##
## ------------------------------------ ##
# AC_CYGWIN
# ---------
# Check for Cygwin. This is a way to set the right value for
# EXEEXT.
AU_DEFUN([AC_CYGWIN],
[AC_REQUIRE([AC_CANONICAL_HOST])[]dnl
AC_DIAGNOSE([obsolete],
[$0 is obsolete: use AC_CANONICAL_HOST and $host_os])dnl
case $host_os in
*cygwin* ) CYGWIN=yes;;
* ) CYGWIN=no;;
esac
])# AC_CYGWIN
# AC_EMXOS2
# ---------
# Check for EMX on OS/2. This is another way to set the right value
# for EXEEXT.
AU_DEFUN([AC_EMXOS2],
[AC_REQUIRE([AC_CANONICAL_HOST])[]dnl
AC_DIAGNOSE([obsolete],
[$0 is obsolete: use AC_CANONICAL_HOST and $host_os])dnl
case $host_os in
*emx* ) EMXOS2=yes;;
* ) EMXOS2=no;;
esac
])# AC_EMXOS2
# AC_MINGW32
# ----------
# Check for mingw32. This is another way to set the right value for
# EXEEXT.
AU_DEFUN([AC_MINGW32],
[AC_REQUIRE([AC_CANONICAL_HOST])[]dnl
AC_DIAGNOSE([obsolete],
[$0 is obsolete: use AC_CANONICAL_HOST and $host_os])dnl
case $host_os in
*mingw32* ) MINGW32=yes;;
* ) MINGW32=no;;
esac
])# AC_MINGW32
## -------------------------- ##
## Checks for UNIX variants. ##
## -------------------------- ##
# These are kludges which should be replaced by a single POSIX check.
# They aren't cached, to discourage their use.
# AC_AIX
# ------
AC_DEFUN([AC_AIX],
[AH_VERBATIM([_ALL_SOURCE],
[/* Define if on AIX 3.
System headers sometimes define this.
We just want to avoid a redefinition error message. */
@%:@ifndef _ALL_SOURCE
@%:@ undef _ALL_SOURCE
@%:@endif])dnl
AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
AC_MSG_CHECKING([for AIX])
AC_EGREP_CPP(yes,
[#ifdef _AIX
yes
#endif
],
[AC_MSG_RESULT([yes])
AC_DEFINE(_ALL_SOURCE)],
[AC_MSG_RESULT([no])])
])# AC_AIX
# AC_MINIX
# --------
AC_DEFUN([AC_MINIX],
[AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
AC_CHECK_HEADER(minix/config.h, MINIX=yes, MINIX=)
if test "$MINIX" = yes; then
AC_DEFINE(_POSIX_SOURCE, 1,
[Define if you need to in order for `stat' and other things to
work.])
AC_DEFINE(_POSIX_1_SOURCE, 2,
[Define if the system does not provide POSIX.1 features except
with this defined.])
AC_DEFINE(_MINIX, 1,
[Define if on MINIX.])
fi
])# AC_MINIX
# AC_ISC_POSIX
# ------------
AC_DEFUN([AC_ISC_POSIX],
[AC_REQUIRE([AC_PROG_CC])dnl
AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
AC_MSG_CHECKING([for POSIXized ISC])
if test -d /etc/conf/kconfig.d &&
grep _POSIX_VERSION [/usr/include/sys/unistd.h] >/dev/null 2>&1
then
AC_MSG_RESULT([yes])
ISC=yes # If later tests want to check for ISC.
AC_DEFINE(_POSIX_SOURCE, 1,
[Define if you need to in order for stat and other things to
work.])
if test "$GCC" = yes; then
CC="$CC -posix"
else
CC="$CC -Xp"
fi
else
AC_MSG_RESULT([no])
ISC=
fi
])# AC_ISC_POSIX
# AC_XENIX_DIR
# ------------
AU_DEFUN(AC_XENIX_DIR,
[# You shouldn't need to depend upon XENIX. Remove this test if useless.
AC_MSG_CHECKING([for Xenix])
AC_EGREP_CPP(yes,
[#if defined(M_XENIX) && !defined(M_UNIX)
yes
@%:@endif],
[AC_MSG_RESULT([yes]); XENIX=yes],
[AC_MSG_RESULT([no]); XENIX=])
AC_HEADER_DIRENT[]dnl
])
# AC_DYNIX_SEQ
# ------------
AU_DEFUN([AC_DYNIX_SEQ], [AC_FUNC_GETMNTENT])
# AC_IRIX_SUN
# -----------
AU_DEFUN([AC_IRIX_SUN],
[AC_FUNC_GETMNTENT
AC_CHECK_LIB(sun, getpwnam)])
# AC_SCO_INTL
# -----------
AU_DEFUN([AC_SCO_INTL], [AC_FUNC_STRFTIME])
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