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Diffstat (limited to 'acspecific.m4')
| -rw-r--r-- | acspecific.m4 | 1112 |
1 files changed, 1112 insertions, 0 deletions
diff --git a/acspecific.m4 b/acspecific.m4 new file mode 100644 index 0000000..13a891f --- /dev/null +++ b/acspecific.m4 @@ -0,0 +1,1112 @@ +# This file is part of Autoconf. -*- Autoconf -*- +# Macros that test for specific features. +#------------------------------------------------------------------------------ +# Copyright 2006-2020,2021 Thomas E. Dickey +# 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" 2>/dev/null; echo 1,2,3`,`echo -n testing 2>/dev/null; echo 1,2,3` in + *c*,-n*) ECHO_N= + ECHO_C= # newlines do not sed ;-) only broken shells would use this case anyway + 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, :)]) + + +# AC_PROG_AWK +# ----------- +# Check for mawk first since it's generally faster. +AC_DEFUN([AC_PROG_AWK], +[AC_CHECK_PROGS(AWK, mawk gawk nawk awk, )]) + + +# AC_PROG_EGREP +# ------------- +AC_DEFUN([AC_PROG_EGREP], +[AC_REQUIRE([AC_PROG_GREP])dnl +AC_CACHE_CHECK([for egrep], ac_cv_path_EGREP, + [if echo a | $GREP -E '(a|b)' >/dev/null 2>&1 + then ac_cv_path_EGREP="$GREP -E" + else + AC_PATH_PROGS(EGREP, gegrep egrep, : ) + test "x$ac_cv_path_EGREP" = "x:" && AC_MSG_ERROR([cannot find workable egrep]) + fi]) + EGREP="$ac_cv_path_EGREP" + AC_SUBST([EGREP]) +])# AC_PROG_EGREP + + +# AC_PROG_FGREP +# ------------- +AC_DEFUN([AC_PROG_FGREP], +[AC_REQUIRE([AC_PROG_GREP])dnl +AC_CACHE_CHECK([for fgrep], ac_cv_path_FGREP, + [if echo 'ab*c' | $GREP -F 'ab*c' >/dev/null 2>&1 + then ac_cv_path_FGREP="$GREP -F" + else + AC_PATH_PROGS(FGREP, gfgrep fgrep, : ) + test "x$ac_cv_path_FGREP" = "x:" && AC_MSG_ERROR([cannot find workable fgrep]) + fi]) + FGREP="$ac_cv_path_FGREP" + AC_SUBST([FGREP]) +])# AC_PROG_FGREP + + +# AC_PROG_GREP +# ------------ +AC_DEFUN([AC_PROG_GREP], +[AC_CHECK_PROGS(GREP, ggrep grep, : ) + AC_SUBST([GREP]) +]) + + +# AC_PROG_YACC +# ------------ +AC_DEFUN([AC_PROG_YACC], +[AC_CHECK_PROGS(YACC, byacc 'bison -y', 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, reflex 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], [$4]) +fi +rm -rf conftest*[]dnl +])# _AC_SYS_LARGEFILE_MACRO_VALUE + + +# AC_SYS_LARGEFILE +# ---------------- +# By default, many hosts won't let programs access large files; +# one must use special compiler options to get large-file access to work. +# For more details about this brain damage please see: +# http://www.sas.com/standards/large.file/x_open.20Mar96.html +AC_DEFUN([AC_SYS_LARGEFILE], +[AC_ARG_ENABLE(largefile, + [ --disable-largefile omit support for large files]) +if test "$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_DIAGNOSE([obsolete], +[$0: System call restartability is now typically set at runtime. +Remove this `AC_SYS_RESTARTABLE_SYSCALLS' +and adjust your code to use `sigaction' with `SA_RESTART' instead.])dnl +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 (void) +{ + int i = fork (), status; + + if (i == 0) + { + sleep (3); + kill (getppid (), SIGINT); + sleep (3); + $ac_main_return (0); + } + + signal (SIGINT, ucatch); + + status = wait (&i); + if (status == -1) + wait (&i); + + $ac_main_return (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 "`${MAKE-make} acfindx 2>/dev/null | grep -v make`" + # Open Windows xmkmf reportedly sets LIBDIR instead of USRLIBDIR. + for ac_extension in a so sl dylib dll; do + if test ! -f "$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=$ac_im_usrlibdir ;; + esac + fi + cd .. + rm -fr conftest.dir +fi +])# _AC_PATH_X_XMKMF + + +# _AC_PATH_X_DIRECT +# ----------------- +# Internal subroutine of _AC_PATH_X. +# Set ac_x_includes and/or ac_x_libraries. +m4_define([_AC_PATH_X_DIRECT], +[# Standard set of common directories for X headers. +# Check X11 before X11Rn because it is often a symlink to the current release. +ac_x_header_dirs=' +/usr/X11/include +/usr/X11R7/include +/usr/X11R6/include +/usr/X11R5/include +/usr/X11R4/include + +/opt/local/include +/opt/X11/include + +/usr/include/X11 +/usr/include/X11R7 +/usr/include/X11R6 +/usr/include/X11R5 +/usr/include/X11R4 + +/usr/local/X11/include +/usr/local/X11R7/include +/usr/local/X11R6/include +/usr/local/X11R5/include +/usr/local/X11R4/include + +/usr/local/include/X11 +/usr/local/include/X11R7 +/usr/local/include/X11R6 +/usr/local/include/X11R5 +/usr/local/include/X11R4 + +/usr/X386/include +/usr/x386/include +/usr/XFree86/include/X11 + +/usr/include +/usr/local/include +/usr/unsupported/include +/usr/athena/include +/usr/local/x11r5/include +/usr/lpp/Xamples/include + +/usr/openwin/include +/usr/openwin/share/include' + +if test "$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 $ac_x_header_dirs" | sed s/include/lib/g` +do + # Don't even attempt the hair of trying to link an X program! + for ac_extension in a so sl dylib dll; do + if test -r "$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_xsave_LIBS="$LIBS"; LIBS="$LIBS $X_LIBS -lX11" + AC_TRY_LINK_FUNC(XOpenDisplay, , + [AC_CHECK_LIB(dnet, dnet_ntoa, [X_EXTRA_LIBS="$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]) + LIBS="$ac_xsave_LIBS" + + # 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]) |