mirror of
https://git.code.sf.net/p/quake/quakeforge
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55a5c39187
__va_list_tag va_list[1];) which causes grief when attempting to reuse va_list variables (eg, in vsnprintf retry loops). This is the reason for MisterP's crashes as the pointers in va_list no longer point to valid data. acinclude.m4: shamelessly steal the va_list, va_copy and __va_copy macros from cdda2wav but modified so AC_DEFINE includes the description (so acconfig.h can remain gone) configure.ac: use AC_TYPE_VA_LIST, AC_FUNC_VA_COPY and AC_FUNC_VA__COPY dstring.c: stash the incoming va_list args in a temp var before calling vsnprintf then restore them each time before retrying, but only if va_list is an array (hopefully this is ok for when va_list is a structure)
403 lines
13 KiB
Text
403 lines
13 KiB
Text
dnl check for fields in a structure
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dnl
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dnl AC_HAVE_STRUCT_FIELD(struct, field, headers)
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AC_DEFUN(AC_HAVE_STRUCT_FIELD, [
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define(cache_val, translit(ac_cv_type_$1_$2, [A-Z ], [a-z_]))
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AC_CACHE_CHECK([for $2 in $1], cache_val,[
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AC_TRY_COMPILE([$3],[$1 x; x.$2;],
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cache_val=yes,
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cache_val=no)])
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if test "$cache_val" = yes; then
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define(foo, translit(HAVE_$1_$2, [a-z ], [A-Z_]))
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AC_DEFINE(foo, 1, [Define if $1 has field $2.])
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undefine(foo)
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fi
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undefine(cache_val)
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])
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# Configure paths for SDL
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# Sam Lantinga 9/21/99
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# stolen from Manish Singh
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# stolen back from Frank Belew
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# stolen from Manish Singh
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# Shamelessly stolen from Owen Taylor
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dnl AM_PATH_SDL([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
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dnl Test for SDL, and define SDL_CFLAGS and SDL_LIBS
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dnl
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AC_DEFUN(AM_PATH_SDL,
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[dnl
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dnl Get the cflags and libraries from the sdl-config script
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dnl
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AC_ARG_WITH(sdl-prefix,[ --with-sdl-prefix=PFX Prefix where SDL is installed (optional)],
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sdl_prefix="$withval", sdl_prefix="")
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AC_ARG_WITH(sdl-exec-prefix,[ --with-sdl-exec-prefix=PFX Exec prefix where SDL is installed (optional)],
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sdl_exec_prefix="$withval", sdl_exec_prefix="")
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AC_ARG_ENABLE(sdltest, [ --disable-sdltest Do not try to compile and run a test SDL program],
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, enable_sdltest=yes)
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if test x$sdl_exec_prefix != x ; then
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sdl_args="$sdl_args --exec-prefix=$sdl_exec_prefix"
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if test x${SDL_CONFIG+set} != xset ; then
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SDL_CONFIG=$sdl_exec_prefix/bin/sdl-config
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fi
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fi
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if test x$sdl_prefix != x ; then
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sdl_args="$sdl_args --prefix=$sdl_prefix"
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if test x${SDL_CONFIG+set} != xset ; then
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SDL_CONFIG=$sdl_prefix/bin/sdl-config
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fi
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fi
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AC_PATH_PROG(SDL_CONFIG, sdl-config, no)
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min_sdl_version=ifelse([$1], ,0.11.0,$1)
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AC_MSG_CHECKING(for SDL - version >= $min_sdl_version)
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no_sdl=""
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if test "$SDL_CONFIG" = "no" ; then
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no_sdl=yes
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else
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SDL_CFLAGS=`$SDL_CONFIG $sdlconf_args --cflags`
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SDL_LIBS=`$SDL_CONFIG $sdlconf_args --libs`
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sdl_major_version=`$SDL_CONFIG $sdl_args --version | \
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sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
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sdl_minor_version=`$SDL_CONFIG $sdl_args --version | \
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sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
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sdl_micro_version=`$SDL_CONFIG $sdl_config_args --version | \
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sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
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if test "x$enable_sdltest" = "xyes" ; then
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ac_save_CFLAGS="$CFLAGS"
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ac_save_LIBS="$LIBS"
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CFLAGS="$CFLAGS $SDL_CFLAGS"
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LIBS="$SDL_LIBS"
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dnl
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dnl Now check if the installed SDL is sufficiently new. (Also sanity
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dnl checks the results of sdl-config to some extent
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dnl
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rm -f conf.sdltest
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AC_TRY_RUN([
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <SDL.h>
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char*
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my_strdup (char *str)
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{
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char *new_str;
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if (str)
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{
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new_str = malloc ((strlen (str) + 1) * sizeof(char));
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strcpy (new_str, str);
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}
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else
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new_str = NULL;
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return new_str;
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}
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int main (int argc, char *argv[])
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{
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int major, minor, micro;
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char *tmp_version;
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/* This hangs on some systems (?)
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system ("touch conf.sdltest");
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*/
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{ FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }
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/* HP/UX 9 (%@#!) writes to sscanf strings */
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tmp_version = my_strdup("$min_sdl_version");
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if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, µ) != 3) {
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printf("%s, bad version string\n", "$min_sdl_version");
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exit(1);
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}
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if (($sdl_major_version > major) ||
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(($sdl_major_version == major) && ($sdl_minor_version > minor)) ||
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(($sdl_major_version == major) && ($sdl_minor_version == minor) && ($sdl_micro_version >= micro)))
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{
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return 0;
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}
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else
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{
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printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", $sdl_major_version, $sdl_minor_version, $sdl_micro_version);
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printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro);
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printf("*** best to upgrade to the required version.\n");
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printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n");
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printf("*** to point to the correct copy of sdl-config, and remove the file\n");
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printf("*** config.cache before re-running configure\n");
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return 1;
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}
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}
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],, no_sdl=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
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CFLAGS="$ac_save_CFLAGS"
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LIBS="$ac_save_LIBS"
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fi
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fi
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if test "x$no_sdl" = x ; then
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AC_MSG_RESULT(yes)
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ifelse([$2], , :, [$2])
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else
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AC_MSG_RESULT(no)
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if test "$SDL_CONFIG" = "no" ; then
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echo "*** The sdl-config script installed by SDL could not be found"
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echo "*** If SDL was installed in PREFIX, make sure PREFIX/bin is in"
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echo "*** your path, or set the SDL_CONFIG environment variable to the"
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echo "*** full path to sdl-config."
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else
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if test -f conf.sdltest ; then
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:
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else
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echo "*** Could not run SDL test program, checking why..."
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CFLAGS="$CFLAGS $SDL_CFLAGS"
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LIBS="$LIBS $SDL_LIBS"
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AC_TRY_LINK([
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#include <stdio.h>
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#include <SDL.h>
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], [ return 0; ],
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[ echo "*** The test program compiled, but did not run. This usually means"
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echo "*** that the run-time linker is not finding SDL or finding the wrong"
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echo "*** version of SDL. If it is not finding SDL, you'll need to set your"
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echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
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echo "*** to the installed location Also, make sure you have run ldconfig if that"
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echo "*** is required on your system"
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echo "***"
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echo "*** If you have an old version installed, it is best to remove it, although"
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echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"],
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[ echo "*** The test program failed to compile or link. See the file config.log for the"
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echo "*** exact error that occured. This usually means SDL was incorrectly installed"
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echo "*** or that you have moved SDL since it was installed. In the latter case, you"
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echo "*** may want to edit the sdl-config script: $SDL_CONFIG" ])
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CFLAGS="$ac_save_CFLAGS"
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LIBS="$ac_save_LIBS"
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fi
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fi
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SDL_CFLAGS=""
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SDL_LIBS=""
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ifelse([$3], , :, [$3])
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fi
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AC_SUBST(SDL_CFLAGS)
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AC_SUBST(SDL_LIBS)
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rm -f conf.sdltest
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])
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dnl AM_PROG_LEX
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dnl Look for flex, lex or missing, then run AC_PROG_LEX and AC_DECL_YYTEXT
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AC_DEFUN(AM_PROG_LEX,
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[missing_dir=ifelse([$1],,`cd $ac_aux_dir && pwd`,$1)
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AC_CHECK_PROGS(LEX, flex lex, $missing_dir/missing flex)
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AC_PROG_LEX
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AC_DECL_YYTEXT
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])
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# CFLAGS and library paths for XMMS
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# written 15 December 1999 by Ben Gertzfield <che@debian.org>
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dnl Usage:
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dnl AM_PATH_XMMS([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
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dnl
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dnl Example:
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dnl AM_PATH_XMMS(0.9.5.1, , AC_MSG_ERROR([*** XMMS >= 0.9.5.1 not installed - please install first ***]))
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dnl
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dnl Defines XMMS_CFLAGS, XMMS_LIBS, XMMS_DATA_DIR, XMMS_PLUGIN_DIR,
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dnl XMMS_VISUALIZATION_PLUGIN_DIR, XMMS_INPUT_PLUGIN_DIR,
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dnl XMMS_OUTPUT_PLUGIN_DIR, XMMS_GENERAL_PLUGIN_DIR, XMMS_EFFECT_PLUGIN_DIR,
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dnl and XMMS_VERSION for your plugin pleasure.
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dnl
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dnl XMMS_TEST_VERSION(AVAILABLE-VERSION, NEEDED-VERSION [, ACTION-IF-OKAY [, ACTION-IF-NOT-OKAY]])
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AC_DEFUN(XMMS_TEST_VERSION, [
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# Determine which version number is greater. Prints 2 to stdout if
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# the second number is greater, 1 if the first number is greater,
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# 0 if the numbers are equal.
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# Written 15 December 1999 by Ben Gertzfield <che@debian.org>
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# Revised 15 December 1999 by Jim Monty <monty@primenet.com>
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AC_PROG_AWK
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xmms_got_version=[` $AWK ' \
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BEGIN { \
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print vercmp(ARGV[1], ARGV[2]); \
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} \
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\
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function vercmp(ver1, ver2, ver1arr, ver2arr, \
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ver1len, ver2len, \
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ver1int, ver2int, len, i, p) { \
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\
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ver1len = split(ver1, ver1arr, /\./); \
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ver2len = split(ver2, ver2arr, /\./); \
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\
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len = ver1len > ver2len ? ver1len : ver2len; \
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\
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for (i = 1; i <= len; i++) { \
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p = 1000 ^ (len - i); \
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ver1int += ver1arr[i] * p; \
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ver2int += ver2arr[i] * p; \
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} \
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\
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if (ver1int < ver2int) \
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return 2; \
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else if (ver1int > ver2int) \
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return 1; \
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else \
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return 0; \
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}' $1 $2`]
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if test $xmms_got_version -eq 2; then # failure
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ifelse([$4], , :, $4)
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else # success!
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ifelse([$3], , :, $3)
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fi
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])
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AC_DEFUN(AM_PATH_XMMS,
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[
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AC_ARG_WITH(xmms-prefix,[ --with-xmms-prefix=PFX Prefix where XMMS is installed (optional)],
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xmms_config_prefix="$withval", xmms_config_prefix="")
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AC_ARG_WITH(xmms-exec-prefix,[ --with-xmms-exec-prefix=PFX Exec prefix where XMMS is installed (optional)],
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xmms_config_exec_prefix="$withval", xmms_config_exec_prefix="")
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if test x$xmms_config_exec_prefix != x; then
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xmms_config_args="$xmms_config_args --exec-prefix=$xmms_config_exec_prefix"
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if test x${XMMS_CONFIG+set} != xset; then
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XMMS_CONFIG=$xmms_config_exec_prefix/bin/xmms-config
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fi
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fi
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if test x$xmms_config_prefix != x; then
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xmms_config_args="$xmms_config_args --prefix=$xmms_config_prefix"
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if test x${XMMS_CONFIG+set} != xset; then
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XMMS_CONFIG=$xmms_config_prefix/bin/xmms-config
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fi
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fi
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AC_PATH_PROG(XMMS_CONFIG, xmms-config, no)
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min_xmms_version=ifelse([$1], ,0.9.5.1, $1)
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if test "$XMMS_CONFIG" = "no"; then
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no_xmms=yes
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else
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XMMS_CFLAGS=`$XMMS_CONFIG $xmms_config_args --cflags`
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XMMS_LIBS=`$XMMS_CONFIG $xmms_config_args --libs`
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XMMS_VERSION=`$XMMS_CONFIG $xmms_config_args --version`
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XMMS_DATA_DIR=`$XMMS_CONFIG $xmms_config_args --data-dir`
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XMMS_PLUGIN_DIR=`$XMMS_CONFIG $xmms_config_args --plugin-dir`
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XMMS_VISUALIZATION_PLUGIN_DIR=`$XMMS_CONFIG $xmms_config_args \
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--visualization-plugin-dir`
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XMMS_INPUT_PLUGIN_DIR=`$XMMS_CONFIG $xmms_config_args --input-plugin-dir`
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XMMS_OUTPUT_PLUGIN_DIR=`$XMMS_CONFIG $xmms_config_args --output-plugin-dir`
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XMMS_EFFECT_PLUGIN_DIR=`$XMMS_CONFIG $xmms_config_args --effect-plugin-dir`
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XMMS_GENERAL_PLUGIN_DIR=`$XMMS_CONFIG $xmms_config_args --general-plugin-dir`
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XMMS_TEST_VERSION($XMMS_VERSION, $min_xmms_version, ,no_xmms=version)
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fi
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AC_MSG_CHECKING(for XMMS - version >= $min_xmms_version)
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if test "x$no_xmms" = x; then
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AC_MSG_RESULT(yes)
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ifelse([$2], , :, [$2])
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else
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AC_MSG_RESULT(no)
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if test "$XMMS_CONFIG" = "no" ; then
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echo "*** The xmms-config script installed by XMMS could not be found."
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echo "*** If XMMS was installed in PREFIX, make sure PREFIX/bin is in"
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echo "*** your path, or set the XMMS_CONFIG environment variable to the"
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echo "*** full path to xmms-config."
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else
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if test "$no_xmms" = "version"; then
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echo "*** An old version of XMMS, $XMMS_VERSION, was found."
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echo "*** You need a version of XMMS newer than $min_xmms_version."
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echo "*** The latest version of XMMS is always available from"
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echo "*** http://www.xmms.org/"
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echo "***"
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echo "*** If you have already installed a sufficiently new version, this error"
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echo "*** probably means that the wrong copy of the xmms-config shell script is"
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echo "*** being found. The easiest way to fix this is to remove the old version"
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echo "*** of XMMS, but you can also set the XMMS_CONFIG environment to point to the"
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echo "*** correct copy of xmms-config. (In this case, you will have to"
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echo "*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf"
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echo "*** so that the correct libraries are found at run-time)"
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fi
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fi
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XMMS_CFLAGS=""
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XMMS_LIBS=""
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ifelse([$3], , :, [$3])
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fi
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AC_SUBST(XMMS_CFLAGS)
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AC_SUBST(XMMS_LIBS)
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AC_SUBST(XMMS_VERSION)
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AC_SUBST(XMMS_DATA_DIR)
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AC_SUBST(XMMS_PLUGIN_DIR)
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AC_SUBST(XMMS_VISUALIZATION_PLUGIN_DIR)
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AC_SUBST(XMMS_INPUT_PLUGIN_DIR)
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AC_SUBST(XMMS_OUTPUT_PLUGIN_DIR)
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AC_SUBST(XMMS_GENERAL_PLUGIN_DIR)
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AC_SUBST(XMMS_EFFECT_PLUGIN_DIR)
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])
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dnl Checks if function/macro va_copy() is available
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dnl Defines HAVE_VA_COPY on success.
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AC_DEFUN(AC_FUNC_VA_COPY,
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[AC_CACHE_CHECK([for va_copy], ac_cv_func_va_copy,
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[AC_TRY_LINK([
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#ifdef HAVE_STDARG_H
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# include <stdarg.h>
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#else
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# include <varargs.h>
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#endif],
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[
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va_list a, b;
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va_copy(a, b);],
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[ac_cv_func_va_copy=yes],
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[ac_cv_func_va_copy=no])])
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if test $ac_cv_func_va_copy = yes; then
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AC_DEFINE(HAVE_VA_COPY, 1, [Define if va_copy is available])
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fi])
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dnl Checks if function/macro __va_copy() is available
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dnl Defines HAVE__VA_COPY on success.
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AC_DEFUN(AC_FUNC__VA_COPY,
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[AC_CACHE_CHECK([for __va_copy], ac_cv_func__va_copy,
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[AC_TRY_LINK([
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#ifdef HAVE_STDARG_H
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# include <stdarg.h>
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#else
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# include <varargs.h>
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#endif],
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[
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va_list a, b;
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__va_copy(a, b);],
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[ac_cv_func__va_copy=yes],
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[ac_cv_func__va_copy=no])])
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if test $ac_cv_func__va_copy = yes; then
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AC_DEFINE(HAVE__VA_COPY, 1, [Define if __va_copy is available])
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fi])
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dnl Checks if va_list is an array
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dnl Defines VA_LIST_IS_ARRAY on success.
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AC_DEFUN(AC_TYPE_VA_LIST,
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[AC_CACHE_CHECK([if va_list is an array], ac_cv_type_va_list_array,
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[AC_TRY_LINK([
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#ifdef HAVE_STDARG_H
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# include <stdarg.h>
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#else
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# include <varargs.h>
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#endif
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],
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[
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va_list a, b;
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a = b;],
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[ac_cv_type_va_list_array=no],
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[ac_cv_type_va_list_array=yes])])
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if test $ac_cv_type_va_list_array = yes; then
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AC_DEFINE(VA_LIST_IS_ARRAY, 1, [Define if va_list is an array])
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fi])
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