test/acinclude.m4
author Alex Szpakowski <slime73@gmail.com>
Wed, 06 May 2015 12:54:51 -0300
changeset 9589 a583c42c51d7
parent 6272 f3dbef2cc0f2
permissions -rw-r--r--
Fixed SDL_GL_GetAttribute queries for framebuffer component sizes in Core Profile OpenGL contexts.

Fixes bugzilla #2060.
     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 # serial 1
     9 
    10 dnl AM_PATH_SDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
    11 dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS
    12 dnl
    13 AC_DEFUN([AM_PATH_SDL2],
    14 [dnl 
    15 dnl Get the cflags and libraries from the sdl2-config script
    16 dnl
    17 AC_ARG_WITH(sdl-prefix,[  --with-sdl-prefix=PFX   Prefix where SDL is installed (optional)],
    18             sdl_prefix="$withval", sdl_prefix="")
    19 AC_ARG_WITH(sdl-exec-prefix,[  --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)],
    20             sdl_exec_prefix="$withval", sdl_exec_prefix="")
    21 AC_ARG_ENABLE(sdltest, [  --disable-sdltest       Do not try to compile and run a test SDL program],
    22 		    , enable_sdltest=yes)
    23 
    24   min_sdl_version=ifelse([$1], ,0.9.0,$1)
    25 
    26   if test "x$sdl_prefix$sdl_exec_prefix" = x ; then
    27     PKG_CHECK_MODULES([SDL], [sdl2 >= $min_sdl_version],
    28            [sdl_pc=yes],
    29            [sdl_pc=no])
    30   else
    31     sdl_pc=no
    32     if test x$sdl_exec_prefix != x ; then
    33       sdl_config_args="$sdl_config_args --exec-prefix=$sdl_exec_prefix"
    34       if test x${SDL_CONFIG+set} != xset ; then
    35         SDL_CONFIG=$sdl_exec_prefix/bin/sdl2-config
    36       fi
    37     fi
    38     if test x$sdl_prefix != x ; then
    39       sdl_config_args="$sdl_config_args --prefix=$sdl_prefix"
    40       if test x${SDL_CONFIG+set} != xset ; then
    41         SDL_CONFIG=$sdl_prefix/bin/sdl2-config
    42       fi
    43     fi
    44   fi
    45 
    46   if test "x$sdl_pc" = xyes ; then
    47     no_sdl=""
    48     SDL_CONFIG="pkg-config sdl2"
    49   else
    50     as_save_PATH="$PATH"
    51     if test "x$prefix" != xNONE && test "$cross_compiling" != yes; then
    52       PATH="$prefix/bin:$prefix/usr/bin:$PATH"
    53     fi
    54     AC_PATH_PROG(SDL_CONFIG, sdl2-config, no, [$PATH])
    55     PATH="$as_save_PATH"
    56     AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)
    57     no_sdl=""
    58 
    59     if test "$SDL_CONFIG" = "no" ; then
    60       no_sdl=yes
    61     else
    62       SDL_CFLAGS=`$SDL_CONFIG $sdl_config_args --cflags`
    63       SDL_LIBS=`$SDL_CONFIG $sdl_config_args --libs`
    64 
    65       sdl_major_version=`$SDL_CONFIG $sdl_config_args --version | \
    66              sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
    67       sdl_minor_version=`$SDL_CONFIG $sdl_config_args --version | \
    68              sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
    69       sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \
    70              sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
    71       if test "x$enable_sdltest" = "xyes" ; then
    72         ac_save_CFLAGS="$CFLAGS"
    73         ac_save_CXXFLAGS="$CXXFLAGS"
    74         ac_save_LIBS="$LIBS"
    75         CFLAGS="$CFLAGS $SDL_CFLAGS"
    76         CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
    77         LIBS="$LIBS $SDL_LIBS"
    78 dnl
    79 dnl Now check if the installed SDL is sufficiently new. (Also sanity
    80 dnl checks the results of sdl2-config to some extent
    81 dnl
    82       rm -f conf.sdltest
    83       AC_TRY_RUN([
    84 #include <stdio.h>
    85 #include <stdlib.h>
    86 #include <string.h>
    87 #include "SDL.h"
    88 
    89 char*
    90 my_strdup (char *str)
    91 {
    92   char *new_str;
    93   
    94   if (str)
    95     {
    96       new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
    97       strcpy (new_str, str);
    98     }
    99   else
   100     new_str = NULL;
   101   
   102   return new_str;
   103 }
   104 
   105 int main (int argc, char *argv[])
   106 {
   107   int major, minor, micro;
   108   char *tmp_version;
   109 
   110   /* This hangs on some systems (?)
   111   system ("touch conf.sdltest");
   112   */
   113   { FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
   114 
   115   /* HP/UX 9 (%@#!) writes to sscanf strings */
   116   tmp_version = my_strdup("$min_sdl_version");
   117   if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
   118      printf("%s, bad version string\n", "$min_sdl_version");
   119      exit(1);
   120    }
   121 
   122    if (($sdl_major_version > major) ||
   123       (($sdl_major_version == major) && ($sdl_minor_version > minor)) ||
   124       (($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
   125     {
   126       return 0;
   127     }
   128   else
   129     {
   130       printf("\n*** 'sdl2-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
   131       printf("*** of SDL required is %d.%d.%d. If sdl2-config is correct, then it is\n", major, minor, micro);
   132       printf("*** best to upgrade to the required version.\n");
   133       printf("*** If sdl2-config was wrong, set the environment variable SDL_CONFIG\n");
   134       printf("*** to point to the correct copy of sdl2-config, and remove the file\n");
   135       printf("*** config.cache before re-running configure\n");
   136       return 1;
   137     }
   138 }
   139 
   140 ],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
   141         CFLAGS="$ac_save_CFLAGS"
   142         CXXFLAGS="$ac_save_CXXFLAGS"
   143         LIBS="$ac_save_LIBS"
   144       fi
   145     fi
   146     if test "x$no_sdl" = x ; then
   147       AC_MSG_RESULT(yes)
   148     else
   149       AC_MSG_RESULT(no)
   150     fi
   151   fi
   152   if test "x$no_sdl" = x ; then
   153      ifelse([$2], , :, [$2])
   154   else
   155      if test "$SDL_CONFIG" = "no" ; then
   156        echo "*** The sdl2-config script installed by SDL could not be found"
   157        echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
   158        echo "*** your path, or set the SDL_CONFIG environment variable to the"
   159        echo "*** full path to sdl2-config."
   160      else
   161        if test -f conf.sdltest ; then
   162         :
   163        else
   164           echo "*** Could not run SDL test program, checking why..."
   165           CFLAGS="$CFLAGS $SDL_CFLAGS"
   166           CXXFLAGS="$CXXFLAGS $SDL_CFLAGS"
   167           LIBS="$LIBS $SDL_LIBS"
   168           AC_TRY_LINK([
   169 #include <stdio.h>
   170 #include "SDL.h"
   171 
   172 int main(int argc, char *argv[])
   173 { return 0; }
   174 #undef  main
   175 #define main K_and_R_C_main
   176 ],      [ return 0; ],
   177         [ echo "*** The test program compiled, but did not run. This usually means"
   178           echo "*** that the run-time linker is not finding SDL or finding the wrong"
   179           echo "*** version of SDL. If it is not finding SDL, you'll need to set your"
   180           echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
   181           echo "*** to the installed location  Also, make sure you have run ldconfig if that"
   182           echo "*** is required on your system"
   183 	  echo "***"
   184           echo "*** If you have an old version installed, it is best to remove it, although"
   185           echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
   186         [ echo "*** The test program failed to compile or link. See the file config.log for the"
   187           echo "*** exact error that occured. This usually means SDL was incorrectly installed"
   188           echo "*** or that you have moved SDL since it was installed. In the latter case, you"
   189           echo "*** may want to edit the sdl2-config script: $SDL_CONFIG" ])
   190           CFLAGS="$ac_save_CFLAGS"
   191           CXXFLAGS="$ac_save_CXXFLAGS"
   192           LIBS="$ac_save_LIBS"
   193        fi
   194      fi
   195      SDL_CFLAGS=""
   196      SDL_LIBS=""
   197      ifelse([$3], , :, [$3])
   198   fi
   199   AC_SUBST(SDL_CFLAGS)
   200   AC_SUBST(SDL_LIBS)
   201   rm -f conf.sdltest
   202 ])
   203 # pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
   204 # serial 1 (pkg-config-0.24)
   205 # 
   206 # Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
   207 #
   208 # This program is free software; you can redistribute it and/or modify
   209 # it under the terms of the GNU General Public License as published by
   210 # the Free Software Foundation; either version 2 of the License, or
   211 # (at your option) any later version.
   212 #
   213 # This program is distributed in the hope that it will be useful, but
   214 # WITHOUT ANY WARRANTY; without even the implied warranty of
   215 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   216 # General Public License for more details.
   217 #
   218 # You should have received a copy of the GNU General Public License
   219 # along with this program; if not, write to the Free Software
   220 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
   221 #
   222 # As a special exception to the GNU General Public License, if you
   223 # distribute this file as part of a program that contains a
   224 # configuration script generated by Autoconf, you may include it under
   225 # the same distribution terms that you use for the rest of that program.
   226 
   227 # PKG_PROG_PKG_CONFIG([MIN-VERSION])
   228 # ----------------------------------
   229 AC_DEFUN([PKG_PROG_PKG_CONFIG],
   230 [m4_pattern_forbid([^_?PKG_[A-Z_]+$])
   231 m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
   232 AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
   233 AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
   234 AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
   235 
   236 if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
   237 	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
   238 fi
   239 if test -n "$PKG_CONFIG"; then
   240 	_pkg_min_version=m4_default([$1], [0.9.0])
   241 	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
   242 	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
   243 		AC_MSG_RESULT([yes])
   244 	else
   245 		AC_MSG_RESULT([no])
   246 		PKG_CONFIG=""
   247 	fi
   248 fi[]dnl
   249 ])# PKG_PROG_PKG_CONFIG
   250 
   251 # PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
   252 #
   253 # Check to see whether a particular set of modules exists.  Similar
   254 # to PKG_CHECK_MODULES(), but does not set variables or print errors.
   255 #
   256 # Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
   257 # only at the first occurence in configure.ac, so if the first place
   258 # it's called might be skipped (such as if it is within an "if", you
   259 # have to call PKG_CHECK_EXISTS manually
   260 # --------------------------------------------------------------
   261 AC_DEFUN([PKG_CHECK_EXISTS],
   262 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
   263 if test -n "$PKG_CONFIG" && \
   264     AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
   265   m4_default([$2], [:])
   266 m4_ifvaln([$3], [else
   267   $3])dnl
   268 fi])
   269 
   270 # _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
   271 # ---------------------------------------------
   272 m4_define([_PKG_CONFIG],
   273 [if test -n "$$1"; then
   274     pkg_cv_[]$1="$$1"
   275  elif test -n "$PKG_CONFIG"; then
   276     PKG_CHECK_EXISTS([$3],
   277                      [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
   278 		     [pkg_failed=yes])
   279  else
   280     pkg_failed=untried
   281 fi[]dnl
   282 ])# _PKG_CONFIG
   283 
   284 # _PKG_SHORT_ERRORS_SUPPORTED
   285 # -----------------------------
   286 AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
   287 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])
   288 if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
   289         _pkg_short_errors_supported=yes
   290 else
   291         _pkg_short_errors_supported=no
   292 fi[]dnl
   293 ])# _PKG_SHORT_ERRORS_SUPPORTED
   294 
   295 
   296 # PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
   297 # [ACTION-IF-NOT-FOUND])
   298 #
   299 #
   300 # Note that if there is a possibility the first call to
   301 # PKG_CHECK_MODULES might not happen, you should be sure to include an
   302 # explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
   303 #
   304 #
   305 # --------------------------------------------------------------
   306 AC_DEFUN([PKG_CHECK_MODULES],
   307 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
   308 AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
   309 AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
   310 
   311 pkg_failed=no
   312 AC_MSG_CHECKING([for $1])
   313 
   314 _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
   315 _PKG_CONFIG([$1][_LIBS], [libs], [$2])
   316 
   317 m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
   318 and $1[]_LIBS to avoid the need to call pkg-config.
   319 See the pkg-config man page for more details.])
   320 
   321 if test $pkg_failed = yes; then
   322    	AC_MSG_RESULT([no])
   323         _PKG_SHORT_ERRORS_SUPPORTED
   324         if test $_pkg_short_errors_supported = yes; then
   325 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "$2" 2>&1`
   326         else 
   327 	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1`
   328         fi
   329 	# Put the nasty error message in config.log where it belongs
   330 	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
   331 
   332 	m4_default([$4], [AC_MSG_ERROR(
   333 [Package requirements ($2) were not met:
   334 
   335 $$1_PKG_ERRORS
   336 
   337 Consider adjusting the PKG_CONFIG_PATH environment variable if you
   338 installed software in a non-standard prefix.
   339 
   340 _PKG_TEXT])dnl
   341         ])
   342 elif test $pkg_failed = untried; then
   343      	AC_MSG_RESULT([no])
   344 	m4_default([$4], [AC_MSG_FAILURE(
   345 [The pkg-config script could not be found or is too old.  Make sure it
   346 is in your PATH or set the PKG_CONFIG environment variable to the full
   347 path to pkg-config.
   348 
   349 _PKG_TEXT
   350 
   351 To get pkg-config, see <http://pkg-config.freedesktop.org/>.])dnl
   352         ])
   353 else
   354 	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
   355 	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
   356         AC_MSG_RESULT([yes])
   357 	$3
   358 fi[]dnl
   359 ])# PKG_CHECK_MODULES