# Configure paths for SDL

# Sam Lantinga 9/21/99

# stolen from Manish Singh

# stolen back from Frank Belew

# stolen from Manish Singh

# Shamelessly stolen from Owen Taylor

dnl AM_PATH_SDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])

dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS

dnl

AC_DEFUN(AM_PATH_SDL,

[dnl

dnl Get the cflags and libraries from the sdl-config script

dnl

AC_ARG_WITH(sdl-prefix,[ --with-sdl-prefix=PFX Prefix where SDL is installed (optional)],

sdl_prefix="$withval", sdl_prefix="")

AC_ARG_WITH(sdl-exec-prefix,[ --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)],

sdl_exec_prefix="$withval", sdl_exec_prefix="")

AC_ARG_ENABLE(sdltest, [ --disable-sdltest Do not try to compile and run a test SDL program],

, enable_sdltest=yes)

if test x$sdl_exec_prefix != x ; then

sdl_args="$sdl_args --exec-prefix=$sdl_exec_prefix"

if test x${SDL_CONFIG+set} != xset ; then

SDL_CONFIG=$sdl_exec_prefix/bin/sdl-config

fi

fi

if test x$sdl_prefix != x ; then

sdl_args="$sdl_args --prefix=$sdl_prefix"

if test x${SDL_CONFIG+set} != xset ; then

SDL_CONFIG=$sdl_prefix/bin/sdl-config

fi

fi

AC_PATH_PROG(SDL_CONFIG, sdl-config, no)

min_sdl_version=ifelse([$1], ,0.11.0,$1)

AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)

no_sdl=""

if test "$SDL_CONFIG" = "no" ; then

no_sdl=yes

else

SDL_CFLAGS=`$SDL_CONFIG $sdlconf_args --cflags`

SDL_LIBS=`$SDL_CONFIG $sdlconf_args --libs`

sdl_major_version=`$SDL_CONFIG $sdl_args --version | \

sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`

sdl_minor_version=`$SDL_CONFIG $sdl_args --version | \

sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`

sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \

sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`

if test "x$enable_sdltest" = "xyes" ; then

ac_save_CFLAGS="$CFLAGS"

ac_save_LIBS="$LIBS"

CFLAGS="$CFLAGS $SDL_CFLAGS"

LIBS="$LIBS $SDL_LIBS"

dnl

dnl Now check if the installed SDL is sufficiently new. (Also sanity

dnl checks the results of sdl-config to some extent

dnl

rm -f conf.sdltest

AC_TRY_RUN([

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

char*

my_strdup (char *str)

{

char *new_str;

if (str)

{

strcpy (new_str, str);

}

else

new_str = NULL;

return new_str;

}

{

int major, minor, micro;

char *tmp_version;

*/

{ FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }

/* HP/UX 9 (%@#!) writes to sscanf strings */

tmp_version = my_strdup("$min_sdl_version");

if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {

printf("%s, bad version string\n", "$min_sdl_version");

exit(1);

}

if (($sdl_major_version > major) ||

(($sdl_major_version == major) && ($sdl_minor_version > minor)) ||

(($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))

{

return 0;

}

else

{

printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);

printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro);

printf("*** best to upgrade to the required version.\n");

printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n");

printf("*** to point to the correct copy of sdl-config, and remove the file\n");

printf("*** config.cache before re-running configure\n");

return 1;

}

}

],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])

CFLAGS="$ac_save_CFLAGS"

LIBS="$ac_save_LIBS"

fi

fi

if test "x$no_sdl" = x ; then

AC_MSG_RESULT(yes)

ifelse([$2], , :, [$2])

else

AC_MSG_RESULT(no)

if test "$SDL_CONFIG" = "no" ; then

echo "*** The sdl-config script installed by SDL could not be found"

echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"

echo "*** your path, or set the SDL_CONFIG environment variable to the"

echo "*** full path to sdl-config."

else

if test -f conf.sdltest ; then

:

else

echo "*** Could not run SDL test program, checking why..."

CFLAGS="$CFLAGS $SDL_CFLAGS"

LIBS="$LIBS $SDL_LIBS"

AC_TRY_LINK([

#include <stdio.h>

int main(int argc, char *argv[])

{ return 0; }

#undef main

#define main K_and_R_C_main

], [ return 0; ],

[ echo "*** The test program compiled, but did not run. This usually means"

echo "*** that the run-time linker is not finding SDL or finding the wrong"

echo "*** version of SDL. If it is not finding SDL, you'll need to set your"

echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"

echo "*** to the installed location Also, make sure you have run ldconfig if that"

echo "*** is required on your system"

echo "***"

echo "*** If you have an old version installed, it is best to remove it, although"

echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],

[ echo "*** The test program failed to compile or link. See the file config.log for the"

echo "*** exact error that occured. This usually means SDL was incorrectly installed"

echo "*** or that you have moved SDL since it was installed. In the latter case, you"

echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ])

CFLAGS="$ac_save_CFLAGS"

LIBS="$ac_save_LIBS"

fi

fi

SDL_CFLAGS=""

SDL_LIBS=""

ifelse([$3], , :, [$3])

fi

AC_SUBST(SDL_CFLAGS)

AC_SUBST(SDL_LIBS)

rm -f conf.sdltest

])

# Configure paths for SMPEG

# Nicolas Vignal 11/19/2000

# stolen from Sam Lantinga

# stolen from Manish Singh

# stolen back from Frank Belew

# stolen from Manish Singh

# Shamelessly stolen from Owen Taylor

dnl AM_PATH_SMPEG([MINIMUM-VERSION, [ACTION-IF-FOUND [,

ACTION-IF-NOT-FOUND]]])

dnl Test for SMPEG, and define SMPEG_CFLAGS and SMPEG_LIBS

dnl

AC_DEFUN(AM_PATH_SMPEG,

[dnl

dnl Get the cflags and libraries from the smpeg-config script

dnl

AC_ARG_WITH(smpeg-prefix,[ --with-smpeg-prefix=PFX Prefix where SMPEG is

installed (optional)],

smpeg_prefix="$withval", smpeg_prefix="")

AC_ARG_WITH(smpeg-exec-prefix,[ --with-smpeg-exec-prefix=PFX Exec prefix

where SMPEG is installed (optional)],

smpeg_exec_prefix="$withval", smpeg_exec_prefix="")

AC_ARG_ENABLE(smpegtest, [ --disable-smpegtest Do not try to compile

and run a test SMPEG program],

, enable_smpegtest=yes)

if test x$smpeg_exec_prefix != x ; then

smpeg_args="$smpeg_args --exec-prefix=$smpeg_exec_prefix"

if test x${SMPEG_CONFIG+set} != xset ; then

SMPEG_CONFIG=$smpeg_exec_prefix/bin/smpeg-config

fi

fi

if test x$smpeg_prefix != x ; then

smpeg_args="$smpeg_args --prefix=$smpeg_prefix"

if test x${SMPEG_CONFIG+set} != xset ; then

SMPEG_CONFIG=$smpeg_prefix/bin/smpeg-config

fi

fi

AC_PATH_PROG(SMPEG_CONFIG, smpeg-config, no)

min_smpeg_version=ifelse([$1], ,0.2.7,$1)

AC_MSG_CHECKING(for SMPEG - version >= $min_smpeg_version)

no_smpeg=""

if test "$SMPEG_CONFIG" = "no" ; then

no_smpeg=yes

else

SMPEG_CFLAGS=`$SMPEG_CONFIG $smpegconf_args --cflags`

SMPEG_LIBS=`$SMPEG_CONFIG $smpegconf_args --libs`

smpeg_major_version=`$SMPEG_CONFIG $smpeg_args --version | \

sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`

smpeg_minor_version=`$SMPEG_CONFIG $smpeg_args --version | \

sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`

smpeg_micro_version=`$SMPEG_CONFIG $smpeg_config_args --version | \

sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`

if test "x$enable_smpegtest" = "xyes" ; then

ac_save_CFLAGS="$CFLAGS"

ac_save_LIBS="$LIBS"

CFLAGS="$CFLAGS $SMPEG_CFLAGS $SDL_CFLAGS"

LIBS="$LIBS $SMPEG_LIBS $SDL_LIBS"

dnl

dnl Now check if the installed SMPEG is sufficiently new. (Also sanity

dnl checks the results of smpeg-config to some extent

dnl

rm -f conf.smpegtest

AC_TRY_RUN([

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "smpeg.h"

char*

my_strdup (char *str)

{

char *new_str;

if (str)

{

new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));

strcpy (new_str, str);

}

else

new_str = NULL;

return new_str;

}

int main (int argc, char *argv[])

{

int major, minor, micro;

char *tmp_version;

/* This hangs on some systems (?)

system ("touch conf.smpegtest");

*/

{ FILE *fp = fopen("conf.smpegtest", "a"); if ( fp ) fclose(fp); }

/* HP/UX 9 (%@#!) writes to sscanf strings */

tmp_version = my_strdup("$min_smpeg_version");

if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {

printf("%s, bad version string\n", "$min_smpeg_version");

exit(1);

}

if (($smpeg_major_version > major) ||

(($smpeg_major_version == major) && ($smpeg_minor_version > minor)) ||

(($smpeg_major_version == major) && ($smpeg_minor_version == minor)

&& ($smpeg_micro_version >= micro)))

{

return 0;

}

else

{

printf("\n*** 'smpeg-config --version' returned %d.%d.%d, but the

minimum version\n", $smpeg_major_version, $smpeg_minor_version,

$smpeg_micro_version);

printf("*** of SMPEG required is %d.%d.%d. If smpeg-config is

correct, then it is\n", major, minor, micro);

printf("*** best to upgrade to the required version.\n");

printf("*** If smpeg-config was wrong, set the environment variable

SMPEG_CONFIG\n");

printf("*** to point to the correct copy of smpeg-config, and remove

the file\n");

printf("*** config.cache before re-running configure\n");

return 1;

}

}

],, no_smpeg=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])

CFLAGS="$ac_save_CFLAGS"

LIBS="$ac_save_LIBS"

fi

fi

if test "x$no_smpeg" = x ; then

AC_MSG_RESULT(yes)

ifelse([$2], , :, [$2])

else

AC_MSG_RESULT(no)

if test "$SMPEG_CONFIG" = "no" ; then

echo "*** The smpeg-config script installed by SMPEG could not be

found"

echo "*** If SMPEG was installed in PREFIX, make sure PREFIX/bin is

in"

echo "*** your path, or set the SMPEG_CONFIG environment variable to

the"

echo "*** full path to smpeg-config."

else

if test -f conf.smpegtest ; then

:

else

echo "*** Could not run SMPEG test program, checking why..."

CFLAGS="$CFLAGS $SMPEG_CFLAGS $SDL_CFLAGS"

LIBS="$LIBS $SMPEG_LIBS $SDL_LIBS"

AC_TRY_LINK([

#include <stdio.h>

#include "smpeg.h"

], [ return 0; ],

[ echo "*** The test program compiled, but did not run. This

usually means"

echo "*** that the run-time linker is not finding SMPEG or

finding the wrong"

echo "*** version of SMPEG. If it is not finding SMPEG, you'll

need to set your"

echo "*** LD_LIBRARY_PATH environment variable, or edit

/etc/ld.so.conf to point"

echo "*** to the installed location Also, make sure you have run

ldconfig if that"

echo "*** is required on your system"

echo "***"

echo "*** If you have an old version installed, it is best to

remove it, although"

echo "*** you may also be able to get things to work by modifying

LD_LIBRARY_PATH"],

[ echo "*** The test program failed to compile or link. See the

file config.log for the"

echo "*** exact error that occured. This usually means SMPEG was

incorrectly installed"

echo "*** or that you have moved SMPEG since it was installed. In

the latter case, you"

echo "*** may want to edit the smpeg-config script:

$SMPEG_CONFIG" ])

CFLAGS="$ac_save_CFLAGS"

LIBS="$ac_save_LIBS"

fi

fi

SMPEG_CFLAGS=""

SMPEG_LIBS=""

ifelse([$3], , :, [$3])

fi

AC_SUBST(SMPEG_CFLAGS)

AC_SUBST(SMPEG_LIBS)

rm -f conf.smpegtest

])

## Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996

##

## 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 of the License, 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 to the GNU General Public License, if you

## distribute this file as part of a program that contains a

## configuration script generated by Autoconf, you may include it under

## the same distribution terms that you use for the rest of that program.

AC_DEFUN(AC_PROG_LIBTOOL,

[AC_REQUIRE([AC_LIBTOOL_SETUP])dnl

# Save cache, so that ltconfig can load it

AC_CACHE_SAVE

# Actually configure libtool. ac_aux_dir is where install-sh is found.

CC="$CC" CFLAGS="$CFLAGS" CPPFLAGS="$CPPFLAGS" \

LD="$LD" LDFLAGS="$LDFLAGS" LIBS="$LIBS" \

LN_S="$LN_S" NM="$NM" RANLIB="$RANLIB" \

DLLTOOL="$DLLTOOL" AS="$AS" OBJDUMP="$OBJDUMP" \

${CONFIG_SHELL-/bin/sh} $ac_aux_dir/ltconfig --no-reexec \

|| AC_MSG_ERROR([libtool configure failed])

# Reload cache, that may have been modified by ltconfig

AC_CACHE_LOAD

# This can be used to rebuild libtool when needed

LIBTOOL_DEPS="$ac_aux_dir/ltconfig $ac_aux_dir/ltmain.sh"

# Always use our own libtool.

LIBTOOL='$(SHELL) $(top_builddir)/libtool'

AC_SUBST(LIBTOOL)dnl

# Redirect the config.log output again, so that the ltconfig log is not

# clobbered by the next message.

exec 5>>./config.log

])

AC_DEFUN(AC_LIBTOOL_SETUP,

[AC_PREREQ(2.13)dnl

AC_REQUIRE([AC_ENABLE_SHARED])dnl

AC_REQUIRE([AC_ENABLE_STATIC])dnl

AC_REQUIRE([AC_ENABLE_FAST_INSTALL])dnl

AC_REQUIRE([AC_CANONICAL_HOST])dnl

AC_REQUIRE([AC_CANONICAL_BUILD])dnl

AC_REQUIRE([AC_PROG_CC])dnl

AC_REQUIRE([AC_PROG_LD])dnl

AC_REQUIRE([AC_PROG_NM])dnl

AC_REQUIRE([AC_PROG_LN_S])dnl

dnl

case "$target" in

NONE) lt_target="$host" ;;

*) lt_target="$target" ;;

esac

# Check for any special flags to pass to ltconfig.

libtool_flags="--cache-file=$cache_file"

test "$enable_shared" = no && libtool_flags="$libtool_flags --disable-shared"

test "$enable_static" = no && libtool_flags="$libtool_flags --disable-static"

test "$enable_fast_install" = no && libtool_flags="$libtool_flags --disable-fast-install"

test "$ac_cv_prog_gcc" = yes && libtool_flags="$libtool_flags --with-gcc"

test "$ac_cv_prog_gnu_ld" = yes && libtool_flags="$libtool_flags --with-gnu-ld"

ifdef([AC_PROVIDE_AC_LIBTOOL_DLOPEN],

[libtool_flags="$libtool_flags --enable-dlopen"])

ifdef([AC_PROVIDE_AC_LIBTOOL_WIN32_DLL],

[libtool_flags="$libtool_flags --enable-win32-dll"])

AC_ARG_ENABLE(libtool-lock,

[ --disable-libtool-lock avoid locking (might break parallel builds)])

test "x$enable_libtool_lock" = xno && libtool_flags="$libtool_flags --disable-lock"

test x"$silent" = xyes && libtool_flags="$libtool_flags --silent"

# Some flags need to be propagated to the compiler or linker for good

# libtool support.

*-*-irix6*)

# Find out which ABI we are using.

echo '[#]line __oline__ "configure"' > conftest.$ac_ext

if AC_TRY_EVAL(ac_compile); then

case "`/usr/bin/file conftest.o`" in

*32-bit*)

LD="${LD-ld} -32"

;;

*N32*)

LD="${LD-ld} -n32"

;;

*64-bit*)

LD="${LD-ld} -64"

;;

esac

fi

rm -rf conftest*

;;

*-*-sco3.2v5*)

# On SCO OpenServer 5, we need -belf to get full-featured binaries.

SAVE_CFLAGS="$CFLAGS"

CFLAGS="$CFLAGS -belf"

AC_CACHE_CHECK([whether the C compiler needs -belf], lt_cv_cc_needs_belf,

[AC_TRY_LINK([],[],[lt_cv_cc_needs_belf=yes],[lt_cv_cc_needs_belf=no])])

if test x"$lt_cv_cc_needs_belf" != x"yes"; then

# this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf

CFLAGS="$SAVE_CFLAGS"

fi

;;

ifdef([AC_PROVIDE_AC_LIBTOOL_WIN32_DLL],

[*-*-cygwin* | *-*-mingw*)

AC_CHECK_TOOL(DLLTOOL, dlltool, false)

AC_CHECK_TOOL(AS, as, false)

AC_CHECK_TOOL(OBJDUMP, objdump, false)

;;

esac

])

# AC_LIBTOOL_DLOPEN - enable checks for dlopen support

AC_DEFUN(AC_LIBTOOL_DLOPEN, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])])

# AC_LIBTOOL_WIN32_DLL - declare package support for building win32 dll's

AC_DEFUN(AC_LIBTOOL_WIN32_DLL, [AC_BEFORE([$0], [AC_LIBTOOL_SETUP])])

# AC_ENABLE_SHARED - implement the --enable-shared flag

# Usage: AC_ENABLE_SHARED[(DEFAULT)]

# Where DEFAULT is either `yes' or `no'. If omitted, it defaults to

# `yes'.

AC_DEFUN(AC_ENABLE_SHARED, [dnl

define([AC_ENABLE_SHARED_DEFAULT], ifelse($1, no, no, yes))dnl

AC_ARG_ENABLE(shared,

changequote(<<, >>)dnl

<< --enable-shared[=PKGS] build shared libraries [default=>>AC_ENABLE_SHARED_DEFAULT],

changequote([, ])dnl

[p=${PACKAGE-default}

case "$enableval" in

yes) enable_shared=yes ;;

no) enable_shared=no ;;

*)

enable_shared=no

# Look at the argument we got. We use all the common list separators.

IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"

for pkg in $enableval; do

if test "X$pkg" = "X$p"; then

enable_shared=yes

fi

done

IFS="$ac_save_ifs"

;;

esac],

enable_shared=AC_ENABLE_SHARED_DEFAULT)dnl

])

# AC_DISABLE_SHARED - set the default shared flag to --disable-shared

AC_DEFUN(AC_DISABLE_SHARED, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl

AC_ENABLE_SHARED(no)])

# AC_ENABLE_STATIC - implement the --enable-static flag

# Usage: AC_ENABLE_STATIC[(DEFAULT)]

# Where DEFAULT is either `yes' or `no'. If omitted, it defaults to

# `yes'.

AC_DEFUN(AC_ENABLE_STATIC, [dnl

define([AC_ENABLE_STATIC_DEFAULT], ifelse($1, no, no, yes))dnl

AC_ARG_ENABLE(static,

changequote(<<, >>)dnl

<< --enable-static[=PKGS] build static libraries [default=>>AC_ENABLE_STATIC_DEFAULT],

changequote([, ])dnl

[p=${PACKAGE-default}

case "$enableval" in

yes) enable_static=yes ;;

no) enable_static=no ;;

*)

enable_static=no

# Look at the argument we got. We use all the common list separators.

IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"

for pkg in $enableval; do

if test "X$pkg" = "X$p"; then

enable_static=yes

fi

done

IFS="$ac_save_ifs"

;;

esac],

enable_static=AC_ENABLE_STATIC_DEFAULT)dnl

])

# AC_DISABLE_STATIC - set the default static flag to --disable-static

AC_DEFUN(AC_DISABLE_STATIC, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl

AC_ENABLE_STATIC(no)])

# AC_ENABLE_FAST_INSTALL - implement the --enable-fast-install flag

# Usage: AC_ENABLE_FAST_INSTALL[(DEFAULT)]

# Where DEFAULT is either `yes' or `no'. If omitted, it defaults to

# `yes'.

AC_DEFUN(AC_ENABLE_FAST_INSTALL, [dnl

define([AC_ENABLE_FAST_INSTALL_DEFAULT], ifelse($1, no, no, yes))dnl

AC_ARG_ENABLE(fast-install,

changequote(<<, >>)dnl

<< --enable-fast-install[=PKGS] optimize for fast installation [default=>>AC_ENABLE_FAST_INSTALL_DEFAULT],

changequote([, ])dnl

[p=${PACKAGE-default}

case "$enableval" in

yes) enable_fast_install=yes ;;

no) enable_fast_install=no ;;

*)

enable_fast_install=no

# Look at the argument we got. We use all the common list separators.

IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"

for pkg in $enableval; do

if test "X$pkg" = "X$p"; then

enable_fast_install=yes

fi

done

IFS="$ac_save_ifs"

;;

esac],

enable_fast_install=AC_ENABLE_FAST_INSTALL_DEFAULT)dnl

])

# AC_ENABLE_FAST_INSTALL - set the default to --disable-fast-install

AC_DEFUN(AC_DISABLE_FAST_INSTALL, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl

AC_ENABLE_FAST_INSTALL(no)])

# AC_PROG_LD - find the path to the GNU or non-GNU linker

AC_DEFUN(AC_PROG_LD,

[AC_ARG_WITH(gnu-ld,

[ --with-gnu-ld assume the C compiler uses GNU ld [default=no]],

test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)

AC_REQUIRE([AC_PROG_CC])dnl

AC_REQUIRE([AC_CANONICAL_HOST])dnl

AC_REQUIRE([AC_CANONICAL_BUILD])dnl

ac_prog=ld

if test "$ac_cv_prog_gcc" = yes; then

# Check if gcc -print-prog-name=ld gives a path.

AC_MSG_CHECKING([for ld used by GCC])

case "$ac_prog" in

# Accept absolute paths.

changequote(,)dnl

[\\/]* | [A-Za-z]:[\\/]*)

re_direlt='/[^/][^/]*/\.\./'

changequote([,])dnl

# Canonicalize the path of ld

ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`

while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do

ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`

done

test -z "$LD" && LD="$ac_prog"

;;

"")

# If it fails, then pretend we aren't using GCC.

ac_prog=ld

;;

*)

# If it is relative, then search for the first ld in PATH.

with_gnu_ld=unknown

;;

esac

elif test "$with_gnu_ld" = yes; then

AC_MSG_CHECKING([for GNU ld])

else

AC_MSG_CHECKING([for non-GNU ld])

fi

AC_CACHE_VAL(ac_cv_path_LD,

[if test -z "$LD"; then

IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"

for ac_dir in $PATH; do

test -z "$ac_dir" && ac_dir=.

if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then

ac_cv_path_LD="$ac_dir/$ac_prog"

# Check to see if the program is GNU ld. I'd rather use --version,

# but apparently some GNU ld's only accept -v.

# Break only if it was the GNU/non-GNU ld that we prefer.

if "$ac_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then

test "$with_gnu_ld" != no && break

else

test "$with_gnu_ld" != yes && break

fi

fi

done

IFS="$ac_save_ifs"

else

ac_cv_path_LD="$LD" # Let the user override the test with a path.

fi])

LD="$ac_cv_path_LD"

if test -n "$LD"; then

AC_MSG_RESULT($LD)

else

AC_MSG_RESULT(no)

fi

test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])

AC_PROG_LD_GNU

])

AC_DEFUN(AC_PROG_LD_GNU,

[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], ac_cv_prog_gnu_ld,

[# I'd rather use --version here, but apparently some GNU ld's only accept -v.

if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then

ac_cv_prog_gnu_ld=yes

else

ac_cv_prog_gnu_ld=no

fi])

])

# AC_PROG_NM - find the path to a BSD-compatible name lister

AC_DEFUN(AC_PROG_NM,

[AC_MSG_CHECKING([for BSD-compatible nm])

AC_CACHE_VAL(ac_cv_path_NM,

[if test -n "$NM"; then

# Let the user override the test.

ac_cv_path_NM="$NM"

else

IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"

for ac_dir in $PATH /usr/ccs/bin /usr/ucb /bin; do

test -z "$ac_dir" && ac_dir=.

if test -f $ac_dir/nm || test -f $ac_dir/nm$ac_exeext ; then

# Check to see if the nm accepts a BSD-compat flag.

# Adding the `sed 1q' prevents false positives on HP-UX, which says:

# nm: unknown option "B" ignored

if ($ac_dir/nm -B /dev/null 2>&1 | sed '1q'; exit 0) | egrep /dev/null >/dev/null; then

ac_cv_path_NM="$ac_dir/nm -B"

break

elif ($ac_dir/nm -p /dev/null 2>&1 | sed '1q'; exit 0) | egrep /dev/null >/dev/null; then

ac_cv_path_NM="$ac_dir/nm -p"

break

else

ac_cv_path_NM=${ac_cv_path_NM="$ac_dir/nm"} # keep the first match, but

continue # so that we can try to find one that supports BSD flags

fi

fi

done

IFS="$ac_save_ifs"

test -z "$ac_cv_path_NM" && ac_cv_path_NM=nm

fi])

NM="$ac_cv_path_NM"

AC_MSG_RESULT([$NM])

])

# AC_CHECK_LIBM - check for math library

AC_DEFUN(AC_CHECK_LIBM,

[AC_REQUIRE([AC_CANONICAL_HOST])dnl

LIBM=

*-*-beos* | *-*-cygwin*)

# These system don't have libm

;;

*-ncr-sysv4.3*)

AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw")

AC_CHECK_LIB(m, main, LIBM="$LIBM -lm")

;;

*)

AC_CHECK_LIB(m, main, LIBM="-lm")

;;

esac

])

# AC_LIBLTDL_CONVENIENCE[(dir)] - sets LIBLTDL to the link flags for

# the libltdl convenience library and INCLTDL to the include flags for

# the libltdl header and adds --enable-ltdl-convenience to the

# configure arguments. Note that LIBLTDL and INCLTDL are not

# AC_SUBSTed, nor is AC_CONFIG_SUBDIRS called. If DIR is not

# provided, it is assumed to be `libltdl'. LIBLTDL will be prefixed

# with '${top_builddir}/' and INCLTDL will be prefixed with

# '${top_srcdir}/' (note the single quotes!). If your package is not

# flat and you're not using automake, define top_builddir and

# top_srcdir appropriately in the Makefiles.

AC_DEFUN(AC_LIBLTDL_CONVENIENCE, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl

case "$enable_ltdl_convenience" in

no) AC_MSG_ERROR([this package needs a convenience libltdl]) ;;

"") enable_ltdl_convenience=yes

ac_configure_args="$ac_configure_args --enable-ltdl-convenience" ;;

esac

LIBLTDL='${top_builddir}/'ifelse($#,1,[$1],['libltdl'])/libltdlc.la

INCLTDL='-I${top_srcdir}/'ifelse($#,1,[$1],['libltdl'])

])

# AC_LIBLTDL_INSTALLABLE[(dir)] - sets LIBLTDL to the link flags for

# the libltdl installable library and INCLTDL to the include flags for

# the libltdl header and adds --enable-ltdl-install to the configure

# arguments. Note that LIBLTDL and INCLTDL are not AC_SUBSTed, nor is

# AC_CONFIG_SUBDIRS called. If DIR is not provided and an installed

# libltdl is not found, it is assumed to be `libltdl'. LIBLTDL will

# be prefixed with '${top_builddir}/' and INCLTDL will be prefixed

# with '${top_srcdir}/' (note the single quotes!). If your package is

# not flat and you're not using automake, define top_builddir and

# top_srcdir appropriately in the Makefiles.

# In the future, this macro may have to be called after AC_PROG_LIBTOOL.

AC_DEFUN(AC_LIBLTDL_INSTALLABLE, [AC_BEFORE([$0],[AC_LIBTOOL_SETUP])dnl

AC_CHECK_LIB(ltdl, main,

[test x"$enable_ltdl_install" != xyes && enable_ltdl_install=no],

[if test x"$enable_ltdl_install" = xno; then

AC_MSG_WARN([libltdl not installed, but installation disabled])

else

enable_ltdl_install=yes

fi

])

if test x"$enable_ltdl_install" = x"yes"; then

ac_configure_args="$ac_configure_args --enable-ltdl-install"

LIBLTDL='${top_builddir}/'ifelse($#,1,[$1],['libltdl'])/libltdl.la

INCLTDL='-I${top_srcdir}/'ifelse($#,1,[$1],['libltdl'])

else

ac_configure_args="$ac_configure_args --enable-ltdl-install=no"

LIBLTDL="-lltdl"

INCLTDL=

fi

])

dnl old names

AC_DEFUN(AM_PROG_LIBTOOL, [indir([AC_PROG_LIBTOOL])])dnl

AC_DEFUN(AM_ENABLE_SHARED, [indir([AC_ENABLE_SHARED], $@)])dnl

AC_DEFUN(AM_ENABLE_STATIC, [indir([AC_ENABLE_STATIC], $@)])dnl

AC_DEFUN(AM_DISABLE_SHARED, [indir([AC_DISABLE_SHARED], $@)])dnl

AC_DEFUN(AM_DISABLE_STATIC, [indir([AC_DISABLE_STATIC], $@)])dnl

AC_DEFUN(AM_PROG_LD, [indir([AC_PROG_LD])])dnl

AC_DEFUN(AM_PROG_NM, [indir([AC_PROG_NM])])dnl

dnl This is just to silence aclocal about the macro not being used

ifelse([AC_DISABLE_FAST_INSTALL])dnl