# 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 2 dnl AM_PATH_SDL2([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_SDL2], [dnl dnl Get the cflags and libraries from the sdl2-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], ,2.0.0,$1) if test "x$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${SDL2_CONFIG+set} != xset ; then SDL2_CONFIG=$sdl_exec_prefix/bin/sdl2-config fi fi if test x$sdl_prefix != x ; then sdl_config_args="$sdl_config_args --prefix=$sdl_prefix" if test x${SDL2_CONFIG+set} != xset ; then SDL2_CONFIG=$sdl_prefix/bin/sdl2-config fi fi fi if test "x$sdl_pc" = xyes ; then no_sdl="" SDL2_CONFIG="pkg-config sdl2" 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(SDL2_CONFIG, sdl2-config, no, [$PATH]) PATH="$as_save_PATH" AC_MSG_CHECKING(for SDL - version >= $min_sdl_version) no_sdl="" if test "$SDL2_CONFIG" = "no" ; then no_sdl=yes else SDL_CFLAGS=`$SDL2_CONFIG $sdl_config_args --cflags` SDL_LIBS=`$SDL2_CONFIG $sdl_config_args --libs` sdl_major_version=`$SDL2_CONFIG $sdl_config_args --version | \ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'` sdl_minor_version=`$SDL2_CONFIG $sdl_config_args --version | \ sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'` sdl_micro_version=`$SDL2_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 $SDL_LIBS" dnl dnl Now check if the installed SDL is sufficiently new. (Also sanity dnl checks the results of sdl2-config to some extent dnl rm -f conf.sdltest AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include <stdio.h> #include <stdlib.h> #include "SDL.h" int main (int argc, char *argv[]) { int major, minor, micro; FILE *fp = fopen("conf.sdltest", "w"); if (fp) fclose(fp); if (sscanf("$min_sdl_version", "%d.%d.%d", &major, &minor, µ) != 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("*** best to upgrade to the required version.\n"); printf("*** If sdl2-config was wrong, set the environment variable SDL2_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 ifelse([$2], , :, [$2]) else if test "$SDL2_CONFIG" = "no" ; then echo "*** The sdl2-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 SDL2_CONFIG environment variable to the" echo "*** full path to sdl2-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_LINK_IFELSE([AC_LANG_PROGRAM([[ #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 sdl2-config script: $SDL2_CONFIG" ]) CFLAGS="$ac_save_CFLAGS" CXXFLAGS="$ac_save_CXXFLAGS" LIBS="$ac_save_LIBS" fi fi SDL_CFLAGS="" SDL_LIBS="" ifelse([$3], , :, [$3]) fi AC_SUBST(SDL_CFLAGS) AC_SUBST(SDL_LIBS) rm -f conf.sdltest ]) # pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*- # serial 1 (pkg-config-0.24) # # Copyright © 2004 Scott James Remnant <scott@netsplit.com>. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. # # As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program. # PKG_PROG_PKG_CONFIG([MIN-VERSION]) # ---------------------------------- AC_DEFUN([PKG_PROG_PKG_CONFIG], [m4_pattern_forbid([^_?PKG_[A-Z_]+$]) m4_pattern_allow([^PKG_CONFIG(_PATH|_LIBDIR)?$]) AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility]) AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path]) AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path]) if test "x$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 $2]) _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