sdl.m4
上传用户:nini_0081
上传日期:2022-07-21
资源大小:2628k
文件大小:7k
- # 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)
- min_sdl_version=ifelse([$1], ,1.2.0,$1)
- if test "x$sdl_prefix$sdl_exec_prefix" = x ; then
- PKG_CHECK_MODULES(SDL, [sdl >= $min_sdl_version],
- [sdl_pc=yes],
- [dnl
- AC_MSG_RESULT(no)
- sdl_pc=no
- ])
- else
- sdl_pc=no
- if test x$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/sdl-config
- fi
- 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=$sdl_prefix/bin/sdl-config
- fi
- fi
- fi
- if test "x$sdl_pc" = xyes ; then
- no_sdl=""
- SDL_CONFIG="pkg-config sdl"
- else
- 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, sdl-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 $SDL_LIBS"
- dnl
- dnl Now check if the installed SDL is sufficiently new. (Also sanity
- dnl checks the results of sdl-config to some extent
- dnl
- rm -f conf.sdltest
- AC_TRY_RUN([
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include "SDL.h"
- char*
- my_strdup (char *str)
- {
- char *new_str;
-
- if (str)
- {
- new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
- strcpy (new_str, str);
- }
- else
- new_str = NULL;
-
- return new_str;
- }
- int main (int argc, char *argv[])
- {
- int major, minor, micro;
- char *tmp_version;
- /* This hangs on some systems (?)
- system ("touch conf.sdltest");
- */
- { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
- /* HP/UX 9 (%@#!) writes to sscanf strings */
- tmp_version = my_strdup("$min_sdl_version");
- if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
- printf("%s, bad version stringn", "$min_sdl_version");
- exit(1);
- }
- if (($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 versionn", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
- printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it isn", major, minor, micro);
- printf("*** best to upgrade to the required version.n");
- printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIGn");
- printf("*** to point to the correct copy of sdl-config, and remove the filen");
- printf("*** config.cache before re-running configuren");
- 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
- ifelse([$2], , :, [$2])
- else
- if test "$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 $SDL_CFLAGS"
- CXXFLAGS="$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"
- echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ])
- CFLAGS="$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
- ])