Mercurial > sdl-ios-xcode
annotate test/acinclude.m4 @ 1012:f14e3059e138
Date: Mon, 13 Dec 2004 21:28:18 -0500
From: Jonathan Atkins
Subject: [SDL] SDL_SaveBMP width bugfix
this fixes the pitch versus width difference that can happen
(especially for 8bit and 24bit (with the exact RGBAmasks) surfaces)
when you use SDL_SaveBMP. The problem was the pitch was used
instead of the width, which in some cases is much wider than the
screen area you really want to save...making for ugly crud on the
saved image borders.
This code has been tested with & without pitch overhangs...and
with the right masks for 24 bit surfaces.
I tested 8,15,16,24,32-0RGB,32-RGBA(with no SDL_SRCALPHA flag).
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 14 Dec 2004 06:20:49 +0000 |
| parents | a5defa3b93e1 |
| children | d94b080ff6ce |
| rev | line source |
|---|---|
| 0 | 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 | |
|
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11 AC_DEFUN([AM_PATH_SDL], |
| 0 | 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 | |
|
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Date: Sat, 8 Sep 2001 04:42:23 +0200
Sam Lantinga <slouken@libsdl.org>
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35 AC_REQUIRE([AC_CANONICAL_TARGET]) |
|
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Fixed path problem with sdl.m4 macro file
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36 PATH="$prefix/bin:$prefix/usr/bin:$PATH" |
|
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37 AC_PATH_PROG(SDL_CONFIG, sdl-config, no, [$PATH]) |
| 0 | 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, µ) != 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" | |
|
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145 |
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146 int main(int argc, char *argv[]) |
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147 { return 0; } |
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148 #undef main |
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149 #define main K_and_R_C_main |
| 0 | 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 ]) |