viewvc.cgi/pearpc/sdl.m4

# 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_REQUIRE([AC_CANONICAL_TARGET])
  PATH="$prefix/bin:$prefix/usr/bin:$PATH"
  AC_PATH_PROG(SDL_CONFIG, sdl-config, no, [$PATH])
  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>
#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*** '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>
#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"
          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], , :, [$3])
  fi
  AC_SUBST(SDL_CFLAGS)
  AC_SUBST(SDL_LIBS)
  rm -f conf.sdltest
])
1	dpavlin	1	# Configure paths for SDL
2			# Sam Lantinga 9/21/99
3			# stolen from Manish Singh
4			# stolen back from Frank Belew
5			# stolen from Manish Singh
6			# Shamelessly stolen from Owen Taylor
7
8			dnl AM_PATH_SDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
9			dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS
10			dnl
11			AC_DEFUN([AM_PATH_SDL],
12			[dnl
13			dnl Get the cflags and libraries from the sdl-config script
14			dnl
15			AC_ARG_WITH(sdl-prefix,[ --with-sdl-prefix=PFX Prefix where SDL is installed (optional)],
16			sdl_prefix="$withval", sdl_prefix="")
17			AC_ARG_WITH(sdl-exec-prefix,[ --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)],
18			sdl_exec_prefix="$withval", sdl_exec_prefix="")
19			AC_ARG_ENABLE(sdltest, [ --disable-sdltest Do not try to compile and run a test SDL program],
20			, enable_sdltest=yes)
21
22			if test x$sdl_exec_prefix != x ; then
23			sdl_args="$sdl_args --exec-prefix=$sdl_exec_prefix"
24			if test x${SDL_CONFIG+set} != xset ; then
25			SDL_CONFIG=$sdl_exec_prefix/bin/sdl-config
26			fi
27			fi
28			if test x$sdl_prefix != x ; then
29			sdl_args="$sdl_args --prefix=$sdl_prefix"
30			if test x${SDL_CONFIG+set} != xset ; then
31			SDL_CONFIG=$sdl_prefix/bin/sdl-config
32			fi
33			fi
34
35			AC_REQUIRE([AC_CANONICAL_TARGET])
36			PATH="$prefix/bin:$prefix/usr/bin:$PATH"
37			AC_PATH_PROG(SDL_CONFIG, sdl-config, no, [$PATH])
38			min_sdl_version=ifelse([$1], ,0.11.0,$1)
39			AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)
40			no_sdl=""
41			if test "$SDL_CONFIG" = "no" ; then
42			no_sdl=yes
43			else
44			SDL_CFLAGS=`$SDL_CONFIG $sdlconf_args --cflags`
45			SDL_LIBS=`$SDL_CONFIG $sdlconf_args --libs`
46
47			sdl_major_version=`$SDL_CONFIG $sdl_args --version \| \
48			sed 's/\([[0-9]]\).\([[0-9]]\).\([[0-9]]*\)/\1/'`
49			sdl_minor_version=`$SDL_CONFIG $sdl_args --version \| \
50			sed 's/\([[0-9]]\).\([[0-9]]\).\([[0-9]]*\)/\2/'`
51			sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version \| \
52			sed 's/\([[0-9]]\).\([[0-9]]\).\([[0-9]]*\)/\3/'`
53			if test "x$enable_sdltest" = "xyes" ; then
54			ac_save_CFLAGS="$CFLAGS"
55			ac_save_LIBS="$LIBS"
56			CFLAGS="$CFLAGS $SDL_CFLAGS"
57			LIBS="$LIBS $SDL_LIBS"
58			dnl
59			dnl Now check if the installed SDL is sufficiently new. (Also sanity
60			dnl checks the results of sdl-config to some extent
61			dnl
62			rm -f conf.sdltest
63			AC_TRY_RUN([
64			#include <stdio.h>
65			#include <stdlib.h>
66			#include <string.h>
67			#include "SDL.h"
68
69			char*
70			my_strdup (char *str)
71			{
72			char *new_str;
73
74			if (str)
75			{
76			new_str = (char )malloc ((strlen (str) + 1) sizeof(char));
77			strcpy (new_str, str);
78			}
79			else
80			new_str = NULL;
81
82			return new_str;
83			}
84
85			int main (int argc, char *argv[])
86			{
87			int major, minor, micro;
88			char *tmp_version;
89
90			/* This hangs on some systems (?)
91			system ("touch conf.sdltest");
92			*/
93			{ FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
94
95			/* HP/UX 9 (%@#!) writes to sscanf strings */
96			tmp_version = my_strdup("$min_sdl_version");
97			if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
98			printf("%s, bad version string\n", "$min_sdl_version");
99			exit(1);
100			}
101
102			if (($sdl_major_version > major) \|\|
103			(($sdl_major_version == major) && ($sdl_minor_version > minor)) \|\|
104			(($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
105			{
106			return 0;
107			}
108			else
109			{
110			printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
111			printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro);
112			printf("*** best to upgrade to the required version.\n");
113			printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n");
114			printf("*** to point to the correct copy of sdl-config, and remove the file\n");
115			printf("*** config.cache before re-running configure\n");
116			return 1;
117			}
118			}
119
120			],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
121			CFLAGS="$ac_save_CFLAGS"
122			LIBS="$ac_save_LIBS"
123			fi
124			fi
125			if test "x$no_sdl" = x ; then
126			AC_MSG_RESULT(yes)
127			ifelse([$2], , :, [$2])
128			else
129			AC_MSG_RESULT(no)
130			if test "$SDL_CONFIG" = "no" ; then
131			echo "*** The sdl-config script installed by SDL could not be found"
132			echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
133			echo "*** your path, or set the SDL_CONFIG environment variable to the"
134			echo "*** full path to sdl-config."
135			else
136			if test -f conf.sdltest ; then
137			:
138			else
139			echo "*** Could not run SDL test program, checking why..."
140			CFLAGS="$CFLAGS $SDL_CFLAGS"
141			LIBS="$LIBS $SDL_LIBS"
142			AC_TRY_LINK([
143			#include <stdio.h>
144			#include "SDL.h"
145
146			int main(int argc, char *argv[])
147			{ return 0; }
148			#undef main
149			#define main K_and_R_C_main
150			], [ return 0; ],
151			[ echo "*** The test program compiled, but did not run. This usually means"
152			echo "*** that the run-time linker is not finding SDL or finding the wrong"
153			echo "*** version of SDL. If it is not finding SDL, you'll need to set your"
154			echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
155			echo "*** to the installed location Also, make sure you have run ldconfig if that"
156			echo "*** is required on your system"
157			echo "***"
158			echo "*** If you have an old version installed, it is best to remove it, although"
159			echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
160			[ echo "*** The test program failed to compile or link. See the file config.log for the"
161			echo "*** exact error that occured. This usually means SDL was incorrectly installed"
162			echo "*** or that you have moved SDL since it was installed. In the latter case, you"
163			echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ])
164			CFLAGS="$ac_save_CFLAGS"
165			LIBS="$ac_save_LIBS"
166			fi
167			fi
168			SDL_CFLAGS=""
169			SDL_LIBS=""
170			ifelse([$3], , :, [$3])
171			fi
172			AC_SUBST(SDL_CFLAGS)
173			AC_SUBST(SDL_LIBS)
174			rm -f conf.sdltest
175			])