# 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

# serial 1

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

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)

min_sdl_version=ifelse([$1], ,0.9.0,$1)

if test "x$sdl_prefix$sdl_exec_prefix" = x ; then

PKG_CHECK_MODULES([SDL], [sdl2 >= $min_sdl_version],

[sdl_pc=yes],

[sdl_pc=no])

else

sdl_pc=no

if test x$sdl_exec_prefix != x ; then

sdl_config_args="$sdl_config_args --exec-prefix=$sdl_exec_prefix"

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

SDL_CONFIG=$sdl_exec_prefix/bin/sdl2-config

fi

if test x$sdl_prefix != x ; then

sdl_config_args="$sdl_config_args --prefix=$sdl_prefix"

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

SDL_CONFIG=$sdl_prefix/bin/sdl2-config

fi

fi

fi

if test "x$sdl_pc" = xyes ; then

no_sdl=""

SDL_CONFIG="pkg-config sdl2"

as_save_PATH="$PATH"

if test "x$prefix" != xNONE && test "$cross_compiling" != yes; then

PATH="$prefix/bin:$prefix/usr/bin:$PATH"

fi

AC_PATH_PROG(SDL_CONFIG, sdl2-config, no, [$PATH])

PATH="$as_save_PATH"

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 $sdl_config_args --cflags`

SDL_LIBS=`$SDL_CONFIG $sdl_config_args --libs`

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

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

sdl_minor_version=`$SDL_CONFIG $sdl_config_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_CXXFLAGS="$CXXFLAGS"

ac_save_LIBS="$LIBS"

CFLAGS="$CFLAGS $SDL_CFLAGS"

CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"

LIBS="$LIBS $SDL_LIBS"

dnl

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

dnl

rm -f conf.sdltest

AC_TRY_RUN([

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "SDL.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.sdltest");

*/

{ 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*** 'sdl2-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 sdl2-config is correct, then it is\n", major, minor, micro);

printf("*** If sdl2-config was wrong, set the environment variable SDL_CONFIG\n");

printf("*** to point to the correct copy of sdl2-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"

CXXFLAGS="$ac_save_CXXFLAGS"

LIBS="$ac_save_LIBS"

fi

fi

if test "x$no_sdl" = x ; then

AC_MSG_RESULT(yes)

else

AC_MSG_RESULT(no)

fi

fi

if test "x$no_sdl" = x ; then

else

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

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"

else

if test -f conf.sdltest ; then

:

else

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

CFLAGS="$CFLAGS $SDL_CFLAGS"

CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"

LIBS="$LIBS $SDL_LIBS"

AC_TRY_LINK([

#include <stdio.h>

#include "SDL.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"

CFLAGS="$ac_save_CFLAGS"

CXXFLAGS="$ac_save_CXXFLAGS"

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

])

# pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-

# serial 1 (pkg-config-0.24)

#

# Copyright © 2004 Scott James Remnant <scott@netsplit.com>.

#

# 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.

# PKG_PROG_PKG_CONFIG([MIN-VERSION])

# ----------------------------------

AC_DEFUN([PKG_PROG_PKG_CONFIG],

[m4_pattern_forbid([^_?PKG_[A-Z_]+$])

m4_pattern_allow([^PKG_CONFIG(_PATH)?$])

AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])

AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])

AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])

if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then

AC_PATH_TOOL([PKG_CONFIG], [pkg-config])

fi

if test -n "$PKG_CONFIG"; then

_pkg_min_version=m4_default([$1], [0.9.0])

AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])

if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then

AC_MSG_RESULT([yes])

else

AC_MSG_RESULT([no])

PKG_CONFIG=""

fi

fi[]dnl

])# PKG_PROG_PKG_CONFIG

# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])

#

# Check to see whether a particular set of modules exists. Similar

# to PKG_CHECK_MODULES(), but does not set variables or print errors.

#

# Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])

# only at the first occurence in configure.ac, so if the first place

# it's called might be skipped (such as if it is within an "if", you

# have to call PKG_CHECK_EXISTS manually

# --------------------------------------------------------------

AC_DEFUN([PKG_CHECK_EXISTS],

[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl

if test -n "$PKG_CONFIG" && \

AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then

m4_default([$2], [:])

m4_ifvaln([$3], [else

$3])dnl

fi])

# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])

# ---------------------------------------------

m4_define([_PKG_CONFIG],

[if test -n "$$1"; then

pkg_cv_[]$1="$$1"

elif test -n "$PKG_CONFIG"; then

PKG_CHECK_EXISTS([$3],

[pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],

[pkg_failed=yes])

else

pkg_failed=untried

fi[]dnl

])# _PKG_CONFIG

# _PKG_SHORT_ERRORS_SUPPORTED

# -----------------------------

AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],

[AC_REQUIRE([PKG_PROG_PKG_CONFIG])

if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then

_pkg_short_errors_supported=yes

else

_pkg_short_errors_supported=no

fi[]dnl

])# _PKG_SHORT_ERRORS_SUPPORTED

# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],

# [ACTION-IF-NOT-FOUND])

#

#

# Note that if there is a possibility the first call to

# PKG_CHECK_MODULES might not happen, you should be sure to include an

# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac

#

#

# --------------------------------------------------------------

AC_DEFUN([PKG_CHECK_MODULES],

[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl

AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl

AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl

pkg_failed=no

AC_MSG_CHECKING([for $1])

_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])

_PKG_CONFIG([$1][_LIBS], [libs], [$2])

m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS

and $1[]_LIBS to avoid the need to call pkg-config.

See the pkg-config man page for more details.])

if test $pkg_failed = yes; then

AC_MSG_RESULT([no])

_PKG_SHORT_ERRORS_SUPPORTED

if test $_pkg_short_errors_supported = yes; then

$1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "$2" 2>&1`

else

$1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1`

fi

# Put the nasty error message in config.log where it belongs

echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD

m4_default([$4], [AC_MSG_ERROR(

[Package requirements ($2) were not met:

$$1_PKG_ERRORS

Consider adjusting the PKG_CONFIG_PATH environment variable if you

installed software in a non-standard prefix.

_PKG_TEXT])dnl

])

elif test $pkg_failed = untried; then

AC_MSG_RESULT([no])

m4_default([$4], [AC_MSG_FAILURE(

[The pkg-config script could not be found or is too old. Make sure it

is in your PATH or set the PKG_CONFIG environment variable to the full

path to pkg-config.

_PKG_TEXT

To get pkg-config, see <http://pkg-config.freedesktop.org/>.])dnl

])

else

$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS

$1[]_LIBS=$pkg_cv_[]$1[]_LIBS

AC_MSG_RESULT([yes])

$3

fi[]dnl

])# PKG_CHECK_MODULES