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configure.ac
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dnl Process this file with autoconf to produce a configure script.
AC_PREREQ([2.63])
AC_INIT
AC_CONFIG_SRCDIR([src/SDL.c])
AC_CONFIG_HEADERS([include/SDL_config.h])
AC_CONFIG_AUX_DIR([build-scripts])
AC_CONFIG_MACRO_DIR([acinclude])
dnl Save the CFLAGS to see whether they were passed in or generated
orig_CFLAGS="$CFLAGS"
dnl Set various version strings - taken gratefully from the GTk sources
# See docs/release_checklist.md
SDL_MAJOR_VERSION=2
SDL_MINOR_VERSION=23
SDL_MICRO_VERSION=0
SDL_VERSION=$SDL_MAJOR_VERSION.$SDL_MINOR_VERSION.$SDL_MICRO_VERSION
SDL_BINARY_AGE=`expr $SDL_MINOR_VERSION \* 100 + $SDL_MICRO_VERSION`
AS_CASE(["$SDL_MINOR_VERSION"],
[*@<:@02468@:>@],
dnl Stable branch, 2.24.1 -> libSDL2-2.0.so.0.2400.1
[SDL_INTERFACE_AGE="$SDL_MICRO_VERSION"],
[*],
dnl Development branch, 2.23.1 -> libSDL2-2.0.so.0.2301.0
[SDL_INTERFACE_AGE=0])
AC_SUBST(SDL_MAJOR_VERSION)
AC_SUBST(SDL_MINOR_VERSION)
AC_SUBST(SDL_MICRO_VERSION)
AC_SUBST(SDL_INTERFACE_AGE)
AC_SUBST(SDL_BINARY_AGE)
AC_SUBST(SDL_VERSION)
# libtool versioning
LT_INIT([win32-dll])
LT_LANG([Windows Resource])
# For historical reasons, the library name redundantly includes the major
# version twice: libSDL2-2.0.so.0.
# TODO: in SDL 3, stop using -release, which will simplify it to libSDL3.so.0
LT_RELEASE=2.0
# Increment this if there is an incompatible change - but if that happens,
# we should rename the library from SDL2 to SDL3, at which point this would
# reset to 0 anyway.
LT_MAJOR=0
LT_AGE=`expr $SDL_BINARY_AGE - $SDL_INTERFACE_AGE`
LT_CURRENT=`expr $LT_MAJOR + $LT_AGE`
LT_REVISION=$SDL_INTERFACE_AGE
m4_pattern_allow([^LT_])
AC_SUBST(LT_RELEASE)
AC_SUBST(LT_CURRENT)
AC_SUBST(LT_REVISION)
AC_SUBST(LT_AGE)
dnl Detect the canonical build and host environments
dnl AC_CANONICAL_HOST
dnl Check for tools
AC_PROG_CC
AC_PROG_CXX
AC_PROG_INSTALL
AC_PROG_MAKE_SET
PKG_PROG_PKG_CONFIG
dnl Make sure that srcdir is a full pathname
case "$host" in
*-*-mingw*)
# Except on msys, where make can't handle full pathnames (bug 1972)
;;
*)
srcdir=`cd $srcdir && pwd`
;;
esac
dnl Set up the compiler and linker flags
INCLUDE="-I$srcdir/include"
dnl Don't use our khronos headers on QNX.
case "$host" in
*-*-nto-qnx*)
;;
*)
INCLUDE="$INCLUDE -idirafter $srcdir/src/video/khronos"
;;
esac
dnl use CXX for linker on Haiku
case "$host" in
*-*-haiku*)
LINKER='$(CXX)'
LIBTOOLLINKERTAG='CXX'
;;
*)
LINKER='$(CC)'
LIBTOOLLINKERTAG='CC'
;;
esac
AC_SUBST(LINKER)
AC_SUBST(LIBTOOLLINKERTAG)
if test x$srcdir != x.; then
INCLUDE="-Iinclude $INCLUDE"
elif test -d .git; then
AC_MSG_ERROR([
*** When building from a git clone you should configure and build in a
separate directory so you don't clobber SDL_config.h, SDL_revision.h
])
fi
BASE_CFLAGS=""
BASE_LDFLAGS=""
case "$host" in
*-*-cygwin*)
# We build SDL on cygwin without the UNIX emulation layer
save_CFLAGS="$CFLAGS"
have_no_cygwin=no
AC_MSG_CHECKING(for GCC -mno-cygwin option)
CFLAGS="$save_CFLAGS -mno-cygwin"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])], [have_no_cygwin=yes],[])
AC_MSG_RESULT($have_no_cygwin)
CFLAGS="$save_CFLAGS"
if test x$have_no_cygwin = xyes; then
BASE_CFLAGS="-mno-cygwin"
BASE_LDFLAGS="-mno-cygwin"
fi
BASE_CFLAGS="$BASE_CFLAGS -I/usr/include/mingw"
;;
esac
# Uncomment the following line if you want to force SDL and applications
# built with it to be compiled for a particular architecture.
#AX_GCC_ARCHFLAG([no], [BASE_CFLAGS="$BASE_CFLAGS $ax_cv_gcc_archflag]")
BUILD_CFLAGS="$CFLAGS $CPPFLAGS -DUSING_GENERATED_CONFIG_H"
# The default optimization for SDL is -O3 (Bug #31)
if test "x$orig_CFLAGS" = x; then
BUILD_CFLAGS=`echo $BUILD_CFLAGS | sed 's/-O2/-O3/'`
fi
EXTRA_CFLAGS="$INCLUDE $BASE_CFLAGS"
BUILD_LDFLAGS="$LDFLAGS"
EXTRA_LDFLAGS="$BASE_LDFLAGS"
## These are common directories to find software packages
#for path in /usr/freeware /usr/pkg /usr/X11R6 /usr/local; do
# if test -d $path/include; then
# EXTRA_CFLAGS="$EXTRA_CFLAGS -I$path/include"
# fi
# if test -d $path/lib; then
# EXTRA_LDFLAGS="$EXTRA_LDFLAGS -L$path/lib"
# fi
#done
SDL_CFLAGS="$BASE_CFLAGS"
SDL_LIBS="-lSDL2"
if test "x$BASE_LDFLAGS" != x; then
SDL_LIBS="$SDL_LIBS $BASE_LDFLAGS"
fi
if test "x$EXTRA_CFLAGS" != x; then
CPPFLAGS="$CPPFLAGS $EXTRA_CFLAGS"
CFLAGS="$CFLAGS $EXTRA_CFLAGS"
fi
if test "x$EXTRA_LDFLAGS" != x; then
LDFLAGS="$LDFLAGS $EXTRA_LDFLAGS"
fi
dnl set this to use on systems that use lib64 instead of lib
base_libdir=`echo \${libdir} | sed 's/.*\/\(.*\)/\1/; q'`
dnl Function to find a library in the compiler search path
find_lib()
{
gcc_bin_path=[`$CC -print-search-dirs 2>/dev/null | fgrep programs: | sed 's/[^=]*=\(.*\)/\1/' | sed 's/:/ /g'`]
gcc_lib_path=[`$CC -print-search-dirs 2>/dev/null | fgrep libraries: | sed 's/[^=]*=\(.*\)/\1/' | sed 's/:/ /g'`]
env_lib_path=[`echo $LIBS $LDFLAGS $* | sed 's/-L[ ]*//g'`]
if test "$cross_compiling" = yes; then
host_lib_path=""
else
host_lib_path="/usr/$base_libdir /usr/local/$base_libdir"
fi
for path in $env_lib_path $gcc_bin_path $gcc_lib_path $host_lib_path; do
lib=[`ls -- $path/$1 2>/dev/null | sed -e '/\.so\..*\./d' -e 's,.*/,,' | sort | tail -1`]
if test x$lib != x; then
echo $lib
return
fi
done
# Try again, this time allowing more than one version digit after the .so
for path in $env_lib_path $gcc_bin_path $gcc_lib_path $host_lib_path; do
lib=[`ls -- $path/$1 2>/dev/null | sed -e 's,.*/,,' | sort | tail -1`]
if test x$lib != x; then
echo $lib
return
fi
done
}
dnl Check for compiler characteristics
AC_C_CONST
AC_C_INLINE
AC_C_VOLATILE
dnl See whether we want assertions for debugging/sanity checking SDL itself.
AC_ARG_ENABLE(assertions,
[AS_HELP_STRING([--enable-assertions],
[Enable internal sanity checks (auto/disabled/release/enabled/paranoid) [default=auto]])],
, enable_assertions=auto)
case "$enable_assertions" in
auto) # Use optimization settings to determine assertion level
;;
disabled)
AC_DEFINE(SDL_DEFAULT_ASSERT_LEVEL, 0, [ ])
;;
release)
AC_DEFINE(SDL_DEFAULT_ASSERT_LEVEL, 1, [ ])
;;
enabled)
AC_DEFINE(SDL_DEFAULT_ASSERT_LEVEL, 2, [ ])
;;
paranoid)
AC_DEFINE(SDL_DEFAULT_ASSERT_LEVEL, 3, [ ])
;;
*)
AC_MSG_ERROR([*** unknown assertion level. stop.])
;;
esac
AC_DEFINE_UNQUOTED([SDL_BUILD_MAJOR_VERSION], $SDL_MAJOR_VERSION, [ ])
AC_DEFINE_UNQUOTED([SDL_BUILD_MINOR_VERSION], $SDL_MINOR_VERSION, [ ])
AC_DEFINE_UNQUOTED([SDL_BUILD_MICRO_VERSION], $SDL_MICRO_VERSION, [ ])
dnl See whether we can use gcc style dependency tracking
AC_ARG_ENABLE(dependency-tracking,
[AS_HELP_STRING([--enable-dependency-tracking],
[Use gcc -MMD -MT dependency tracking [default=yes]])],
, enable_dependency_tracking=yes)
if test x$enable_dependency_tracking = xyes; then
have_gcc_mmd_mt=no
AC_MSG_CHECKING(for GCC -MMD -MT option)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#if !defined(__GNUC__) || __GNUC__ < 3
#error Dependency tracking requires GCC 3.0 or newer
#endif
]],[])], [have_gcc_mmd_mt=yes],[])
AC_MSG_RESULT($have_gcc_mmd_mt)
if test x$have_gcc_mmd_mt = xyes; then
DEPENDENCY_TRACKING_OPTIONS="-MMD -MT \$@"
fi
fi
AC_MSG_CHECKING(for linker option --no-undefined)
have_no_undefined=no
case "$host" in
dnl Skip this on platforms where it is just simply busted.
*-*-openbsd*)
;;
*)
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -Wl,--no-undefined"
AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])], [
have_no_undefined=yes
BUILD_LDFLAGS="$BUILD_LDFLAGS -Wl,--no-undefined"
],[])
LDFLAGS="$save_LDFLAGS"
;;
esac
AC_MSG_RESULT($have_no_undefined)
AC_MSG_CHECKING(for linker option --dynamicbase)
have_dynamicbase=no
case "$host" in
*)
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -Wl,--dynamicbase"
AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])], [
have_dynamicbase=yes
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--dynamicbase"
],[])
LDFLAGS="$save_LDFLAGS"
;;
esac
AC_MSG_RESULT($have_dynamicbase)
AC_MSG_CHECKING(for linker option --nxcompat)
have_nxcompat=no
case "$host" in
*)
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -Wl,--nxcompat"
AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])], [
have_nxcompat=yes
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--nxcompat"
],[])
LDFLAGS="$save_LDFLAGS"
;;
esac
AC_MSG_RESULT($have_nxcompat)
AC_MSG_CHECKING(for linker option --high-entropy-va)
have_high_entropy_va=no
case "$host" in
*)
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -Wl,--high-entropy-va"
AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])], [
have_high_entropy_va=yes
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--high-entropy-va"
],[])
LDFLAGS="$save_LDFLAGS"
;;
esac
AC_MSG_RESULT($have_high_entropy_va)
dnl See whether we are allowed to use the system C library
AC_ARG_ENABLE(libc,
[AS_HELP_STRING([--enable-libc], [Use the system C library [default=yes]])],
, enable_libc=yes)
if test x$enable_libc = xyes; then
AC_DEFINE(HAVE_LIBC, 1, [ ])
dnl Check for C library headers
AC_HEADER_STDC
AC_CHECK_HEADERS(sys/types.h stdio.h stdlib.h stddef.h stdarg.h malloc.h memory.h string.h strings.h wchar.h inttypes.h stdint.h limits.h ctype.h math.h float.h iconv.h signal.h)
dnl Check for typedefs, structures, etc.
AC_TYPE_SIZE_T
dnl Check for defines
AC_CHECK_DEFINE(M_PI, math.h)
AC_FUNC_ALLOCA
dnl Checks for library functions.
AC_FUNC_MEMCMP
if test x$ac_cv_func_memcmp_working = xyes; then
AC_DEFINE(HAVE_MEMCMP, 1, [ ])
fi
AC_FUNC_STRTOD
if test x$ac_cv_func_strtod = xyes; then
AC_DEFINE(HAVE_STRTOD, 1, [ ])
fi
AC_CHECK_FUNC(mprotect,
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/mman.h>
]],[])], [
AC_DEFINE(HAVE_MPROTECT, 1, [ ])
],[]),
)
AC_CHECK_FUNCS(malloc calloc realloc free getenv setenv putenv unsetenv bsearch qsort abs bcopy memset memcpy memmove wcslen wcslcpy wcslcat _wcsdup wcsdup wcsstr wcscmp wcsncmp wcscasecmp _wcsicmp wcsncasecmp _wcsnicmp strlen strlcpy strlcat _strrev _strupr _strlwr index rindex strchr strrchr strstr strtok_r itoa _ltoa _uitoa _ultoa strtol strtoul _i64toa _ui64toa strtoll strtoull atoi atof strcmp strncmp _stricmp strcasecmp _strnicmp strncasecmp vsscanf vsnprintf fopen64 fseeko fseeko64 sigaction setjmp nanosleep sysconf sysctlbyname getauxval elf_aux_info poll _Exit)
AC_CHECK_LIB(m, pow, [LIBS="$LIBS -lm"; EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lm"])
AC_CHECK_FUNCS(acos acosf asin asinf atan atanf atan2 atan2f ceil ceilf copysign copysignf cos cosf exp expf fabs fabsf floor floorf trunc truncf fmod fmodf log logf log10 log10f lround lroundf pow powf round roundf scalbn scalbnf sin sinf sqrt sqrtf tan tanf)
AC_CHECK_LIB(iconv, iconv_open, [LIBS="$LIBS -liconv"; EXTRA_LDFLAGS="$EXTRA_LDFLAGS -liconv"])
AC_CHECK_FUNCS(iconv)
AC_CHECK_MEMBER(struct sigaction.sa_sigaction,[AC_DEFINE([HAVE_SA_SIGACTION], 1, [ ])], ,[#include <signal.h>])
dnl Check for additional non-standard headers
AC_CHECK_HEADERS(libunwind.h)
fi
dnl AC_CHECK_SIZEOF(void*)
dnl See whether we can use gcc atomic operations on this architecture
AC_ARG_ENABLE(gcc-atomics,
[AS_HELP_STRING([--enable-gcc-atomics],
[Use gcc builtin atomics [default=yes]])],
, enable_gcc_atomics=yes)
if test x$enable_gcc_atomics = xyes; then
have_gcc_atomics=no
AC_MSG_CHECKING(for GCC builtin atomic operations)
AC_LINK_IFELSE([AC_LANG_PROGRAM([],[[
int a;
void *x, *y, *z;
__sync_lock_test_and_set(&a, 4);
__sync_lock_test_and_set(&x, y);
__sync_fetch_and_add(&a, 1);
__sync_bool_compare_and_swap(&a, 5, 10);
__sync_bool_compare_and_swap(&x, y, z);
]])],
[have_gcc_atomics=yes],[])
AC_MSG_RESULT($have_gcc_atomics)
if test x$have_gcc_atomics = xyes; then
AC_DEFINE(HAVE_GCC_ATOMICS, 1, [ ])
else
# See if we have the minimum operation needed for GCC atomics
AC_LINK_IFELSE([AC_LANG_PROGRAM([],[[
int a;
__sync_lock_test_and_set(&a, 1);
__sync_lock_release(&a);
]])], [have_gcc_sync_lock_test_and_set=yes],[])
if test x$have_gcc_sync_lock_test_and_set = xyes; then
AC_DEFINE(HAVE_GCC_SYNC_LOCK_TEST_AND_SET, 1, [ ])
fi
fi
fi
# Standard C sources
SOURCES="$SOURCES $srcdir/src/*.c"
SOURCES="$SOURCES $srcdir/src/atomic/*.c"
SOURCES="$SOURCES $srcdir/src/audio/*.c"
SOURCES="$SOURCES $srcdir/src/cpuinfo/*.c"
SOURCES="$SOURCES $srcdir/src/dynapi/*.c"
SOURCES="$SOURCES $srcdir/src/events/*.c"
SOURCES="$SOURCES $srcdir/src/file/*.c"
SOURCES="$SOURCES $srcdir/src/haptic/*.c"
SOURCES="$SOURCES $srcdir/src/hidapi/*.c"
SOURCES="$SOURCES $srcdir/src/joystick/*.c"
SOURCES="$SOURCES $srcdir/src/libm/*.c"
SOURCES="$SOURCES $srcdir/src/misc/*.c"
SOURCES="$SOURCES $srcdir/src/power/*.c"
#SOURCES="$SOURCES $srcdir/src/filesystem/*.c"
SOURCES="$SOURCES $srcdir/src/render/*.c"
SOURCES="$SOURCES $srcdir/src/render/*/*.c"
SOURCES="$SOURCES $srcdir/src/sensor/*.c"
SOURCES="$SOURCES $srcdir/src/stdlib/*.c"
SOURCES="$SOURCES $srcdir/src/thread/*.c"
SOURCES="$SOURCES $srcdir/src/timer/*.c"
SOURCES="$SOURCES $srcdir/src/video/*.c"
SOURCES="$SOURCES $srcdir/src/video/yuv2rgb/*.c"
SOURCES="$SOURCES $srcdir/src/locale/*.c"
dnl Enable/disable various subsystems of the SDL library
case "$host" in
*-*-emscripten*)
default_atomic=no
;;
*)
default_atomic=yes
;;
esac
AC_ARG_ENABLE(atomic,
[AS_HELP_STRING([--enable-atomic], [Enable the atomic operations subsystem [default=yes]])],
, enable_atomic=$default_atomic)
if test x$enable_atomic != xyes; then
AC_DEFINE(SDL_ATOMIC_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} atomic"
fi
AC_ARG_ENABLE(audio,
[AS_HELP_STRING([--enable-audio], [Enable the audio subsystem [default=yes]])],
, enable_audio=yes)
if test x$enable_audio != xyes; then
AC_DEFINE(SDL_AUDIO_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} audio"
fi
AC_ARG_ENABLE(video,
[AS_HELP_STRING([--enable-video], [Enable the video subsystem [default=yes]])],
, enable_video=yes)
if test x$enable_video != xyes; then
AC_DEFINE(SDL_VIDEO_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} video"
fi
AC_ARG_ENABLE(render,
[AS_HELP_STRING([--enable-render], [Enable the render subsystem [default=yes]])],
, enable_render=yes)
if test x$enable_render != xyes; then
AC_DEFINE(SDL_RENDER_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} render"
fi
AC_ARG_ENABLE(events,
[AS_HELP_STRING([--enable-events], [Enable the events subsystem [default=yes]])],
, enable_events=yes)
if test x$enable_events != xyes; then
AC_DEFINE(SDL_EVENTS_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} events"
fi
AC_ARG_ENABLE(joystick,
[AS_HELP_STRING([--enable-joystick], [Enable the joystick subsystem [default=yes]])],
, enable_joystick=yes)
if test x$enable_joystick != xyes; then
AC_DEFINE(SDL_JOYSTICK_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} joystick"
fi
AC_ARG_ENABLE(haptic,
[AS_HELP_STRING([--enable-haptic], [Enable the haptic (force feedback) subsystem [default=yes]])],
, enable_haptic=yes)
if test x$enable_haptic != xyes; then
AC_DEFINE(SDL_HAPTIC_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} haptic"
fi
AC_ARG_ENABLE(hidapi,
[AS_HELP_STRING([--enable-hidapi], [Enable the HIDAPI subsystem [default=yes]])],
, enable_hidapi=yes)
if test x$enable_hidapi != xyes; then
AC_DEFINE(SDL_HIDAPI_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} hidapi"
fi
AC_ARG_ENABLE(sensor,
[AS_HELP_STRING([--enable-sensor], [Enable the sensor subsystem [default=yes]])],
, enable_sensor=yes)
if test x$enable_sensor != xyes; then
AC_DEFINE(SDL_SENSOR_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} sensor"
fi
AC_ARG_ENABLE(power,
[AS_HELP_STRING([--enable-power], [Enable the power subsystem [default=yes]])],
, enable_power=yes)
if test x$enable_power != xyes; then
AC_DEFINE(SDL_POWER_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} power"
fi
AC_ARG_ENABLE(filesystem,
[AS_HELP_STRING([--enable-filesystem], [Enable the filesystem subsystem [default=yes]])],
, enable_filesystem=yes)
if test x$enable_filesystem != xyes; then
AC_DEFINE(SDL_FILESYSTEM_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} filesystem"
fi
AC_ARG_ENABLE(threads,
[AS_HELP_STRING([--enable-threads], [Enable the threading subsystem [default=yes]])],
, enable_threads=yes)
if test x$enable_threads != xyes; then
AC_DEFINE(SDL_THREADS_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} threads"
fi
AC_ARG_ENABLE(timers,
[AS_HELP_STRING([--enable-timers], [Enable the timer subsystem [default=yes]])],
, enable_timers=yes)
if test x$enable_timers != xyes; then
AC_DEFINE(SDL_TIMERS_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} timers"
fi
AC_ARG_ENABLE(file,
[AS_HELP_STRING([--enable-file], [Enable the file subsystem [default=yes]])],
, enable_file=yes)
if test x$enable_file != xyes; then
AC_DEFINE(SDL_FILE_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} file"
fi
AC_ARG_ENABLE(misc,
[AS_HELP_STRING([--enable-misc], [Enable the misc subsystem [default=yes]])],
, enable_misc=yes)
if test x$enable_misc != xyes; then
AC_DEFINE(SDL_MISC_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} misc"
fi
AC_ARG_ENABLE(locale,
[AS_HELP_STRING([--enable-locale], [Enable the locale subsystem [default=yes]])],
, enable_locale=yes)
if test x$enable_locale != xyes; then
AC_DEFINE(SDL_LOCALE_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} locale"
fi
AC_ARG_ENABLE(loadso,
[AS_HELP_STRING([--enable-loadso], [Enable the shared object loading subsystem [default=yes]])],
, enable_loadso=yes)
if test x$enable_loadso != xyes; then
AC_DEFINE(SDL_LOADSO_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} loadso"
fi
AC_ARG_ENABLE(cpuinfo,
[AS_HELP_STRING([--enable-cpuinfo], [Enable the cpuinfo subsystem [default=yes]])],
, enable_cpuinfo=yes)
if test x$enable_cpuinfo != xyes; then
AC_DEFINE(SDL_CPUINFO_DISABLED, 1, [ ])
else
SUMMARY_modules="${SUMMARY_modules} cpuinfo"
fi
AC_ARG_ENABLE(assembly,
[AS_HELP_STRING([--enable-assembly], [Enable assembly routines [default=yes]])],
, enable_assembly=yes)
if test x$enable_assembly = xyes; then
SUMMARY_modules="${SUMMARY_modules} assembly"
# Make sure that we don't generate floating point code that would
# cause illegal instruction exceptions on older processors
case "$host" in
*-*-darwin*)
# Don't need to worry about Apple hardware, it's all SSE capable
default_ssemath=yes
;;
*64-*-*)
# x86 64-bit architectures all have SSE instructions
default_ssemath=yes
;;
*)
default_ssemath=no
;;
esac
AC_ARG_ENABLE(ssemath,
[AS_HELP_STRING([--enable-ssemath], [Allow GCC to use SSE floating point math [default=maybe]])],
, enable_ssemath=$default_ssemath)
if test x$enable_ssemath = xno; then
if test x$have_gcc_sse = xyes -o x$have_gcc_sse2 = xyes -o x$have_gcc_sse3 = xyes; then
EXTRA_CFLAGS="$EXTRA_CFLAGS -mfpmath=387"
fi
fi
dnl Check for various instruction support
AC_ARG_ENABLE(mmx,
[AS_HELP_STRING([--enable-mmx], [use MMX assembly routines [default=yes]])],
, enable_mmx=yes)
if test x$enable_mmx = xyes; then
save_CFLAGS="$CFLAGS"
have_gcc_mmx=no
AC_MSG_CHECKING(for GCC -mmmx option)
mmx_CFLAGS="-mmmx"
CFLAGS="$save_CFLAGS $mmx_CFLAGS"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef __MINGW32__
#include <_mingw.h>
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#else
#include <mmintrin.h>
#endif
#else
#include <mmintrin.h>
#endif
#ifndef __MMX__
#error Assembler CPP flag not enabled
#endif
]],[])], [have_gcc_mmx=yes],[])
AC_MSG_RESULT($have_gcc_mmx)
CFLAGS="$save_CFLAGS"
if test x$have_gcc_mmx = xyes; then
EXTRA_CFLAGS="$EXTRA_CFLAGS $mmx_CFLAGS"
SUMMARY_math="${SUMMARY_math} mmx"
fi
fi
AC_ARG_ENABLE(3dnow,
[AS_HELP_STRING([--enable-3dnow], [use 3DNow! assembly routines [default=yes]])],
, enable_3dnow=yes)
if test x$enable_3dnow = xyes; then
save_CFLAGS="$CFLAGS"
have_gcc_3dnow=no
AC_MSG_CHECKING(for GCC -m3dnow option)
amd3dnow_CFLAGS="-m3dnow"
CFLAGS="$save_CFLAGS $amd3dnow_CFLAGS"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <mm3dnow.h>
#ifndef __3dNOW__
#error Assembler CPP flag not enabled
#endif
]], [[
void *p = 0;
_m_prefetch(p);
]])],
[have_gcc_3dnow=yes],[])
AC_MSG_RESULT($have_gcc_3dnow)
CFLAGS="$save_CFLAGS"
if test x$have_gcc_3dnow = xyes; then
EXTRA_CFLAGS="$EXTRA_CFLAGS $amd3dnow_CFLAGS"
SUMMARY_math="${SUMMARY_math} 3dnow"
fi
fi
AC_ARG_ENABLE(sse,
[AS_HELP_STRING([--enable-sse], [use SSE assembly routines [default=yes]])],
, enable_sse=yes)
if test x$enable_sse = xyes; then
save_CFLAGS="$CFLAGS"
have_gcc_sse=no
AC_MSG_CHECKING(for GCC -msse option)
sse_CFLAGS="-msse"
CFLAGS="$save_CFLAGS $sse_CFLAGS"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef __MINGW32__
#include <_mingw.h>
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#else
#include <xmmintrin.h>
#endif
#else
#include <xmmintrin.h>
#endif
#ifndef __SSE__
#error Assembler CPP flag not enabled
#endif
]],[])], [have_gcc_sse=yes],[])
AC_MSG_RESULT($have_gcc_sse)
CFLAGS="$save_CFLAGS"
if test x$have_gcc_sse = xyes; then
EXTRA_CFLAGS="$EXTRA_CFLAGS $sse_CFLAGS"
SUMMARY_math="${SUMMARY_math} sse"
fi
fi
AC_ARG_ENABLE(sse2,
[AS_HELP_STRING([--enable-sse2], [use SSE2 assembly routines [default=maybe]])],
, enable_sse2=$default_ssemath)
if test x$enable_sse2 = xyes; then
save_CFLAGS="$CFLAGS"
have_gcc_sse2=no
AC_MSG_CHECKING(for GCC -msse2 option)
sse2_CFLAGS="-msse2"
CFLAGS="$save_CFLAGS $sse2_CFLAGS"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef __MINGW32__
#include <_mingw.h>
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#else
#include <emmintrin.h>
#endif
#else
#include <emmintrin.h>
#endif
#ifndef __SSE2__
#error Assembler CPP flag not enabled
#endif
]],[])], [have_gcc_sse2=yes],[])
AC_MSG_RESULT($have_gcc_sse2)
CFLAGS="$save_CFLAGS"
if test x$have_gcc_sse2 = xyes; then
EXTRA_CFLAGS="$EXTRA_CFLAGS $sse2_CFLAGS"
SUMMARY_math="${SUMMARY_math} sse2"
fi
fi
AC_ARG_ENABLE(sse3,
[AS_HELP_STRING([--enable-sse3], [use SSE3 assembly routines [default=maybe]])],
, enable_sse3=$default_ssemath)
if test x$enable_sse3 = xyes; then
save_CFLAGS="$CFLAGS"
have_gcc_sse3=no
AC_MSG_CHECKING(for GCC -msse3 option)
sse3_CFLAGS="-msse3"
CFLAGS="$save_CFLAGS $sse3_CFLAGS"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef __MINGW32__
#include <_mingw.h>
#ifdef __MINGW64_VERSION_MAJOR
#include <intrin.h>
#else
#include <pmmintrin.h>
#endif
#else
#include <pmmintrin.h>
#endif
#ifndef __SSE2__
#error Assembler CPP flag not enabled
#endif
]],[])], [have_gcc_sse3=yes],[])
AC_MSG_RESULT($have_gcc_sse3)
CFLAGS="$save_CFLAGS"
if test x$have_gcc_sse3 = xyes; then
EXTRA_CFLAGS="$EXTRA_CFLAGS $sse3_CFLAGS"
SUMMARY_math="${SUMMARY_math} sse3"
fi
fi
AC_MSG_CHECKING(for immintrin.h)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <immintrin.h>]])],
[have_immintrin_h_hdr=yes],[have_immintrin_h_hdr=no])
AC_MSG_RESULT($have_immintrin_h_hdr)
if test x$have_immintrin_h_hdr = xyes; then
AC_DEFINE(HAVE_IMMINTRIN_H, 1, [ ])
fi
AC_ARG_ENABLE(altivec,
[AS_HELP_STRING([--enable-altivec], [use Altivec assembly routines [default=yes]])],
, enable_altivec=yes)
if test x$enable_altivec = xyes; then
save_CFLAGS="$CFLAGS"
have_gcc_altivec=no
have_altivec_h_hdr=no
altivec_CFLAGS="-maltivec"
CFLAGS="$save_CFLAGS $altivec_CFLAGS"
AC_MSG_CHECKING(for Altivec with GCC altivec.h and -maltivec option)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <altivec.h>
vector unsigned int vzero() {
return vec_splat_u32(0);
}
]],[])], [
have_gcc_altivec=yes
have_altivec_h_hdr=yes
],[])
AC_MSG_RESULT($have_gcc_altivec)
if test x$have_gcc_altivec = xno; then
AC_MSG_CHECKING(for Altivec with GCC -maltivec option)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
vector unsigned int vzero() {
return vec_splat_u32(0);
}
]],[])], [have_gcc_altivec=yes],[])
AC_MSG_RESULT($have_gcc_altivec)
fi
if test x$have_gcc_altivec = xno; then
AC_MSG_CHECKING(for Altivec with GCC altivec.h and -faltivec option)
altivec_CFLAGS="-faltivec"
CFLAGS="$save_CFLAGS $altivec_CFLAGS"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <altivec.h>
vector unsigned int vzero() {
return vec_splat_u32(0);
}
]],[])], [
have_gcc_altivec=yes
have_altivec_h_hdr=yes
],[])
AC_MSG_RESULT($have_gcc_altivec)
fi
if test x$have_gcc_altivec = xno; then
AC_MSG_CHECKING(for Altivec with GCC -faltivec option)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
vector unsigned int vzero() {
return vec_splat_u32(0);
}
]],[])], [have_gcc_altivec=yes],[])
AC_MSG_RESULT($have_gcc_altivec)
fi
CFLAGS="$save_CFLAGS"
if test x$have_gcc_altivec = xyes; then
AC_DEFINE(SDL_ALTIVEC_BLITTERS, 1, [ ])
if test x$have_altivec_h_hdr = xyes; then
AC_DEFINE(HAVE_ALTIVEC_H, 1, [ ])
fi
EXTRA_CFLAGS="$EXTRA_CFLAGS $altivec_CFLAGS"
SUMMARY_math="${SUMMARY_math} altivec"
fi
fi
fi
dnl See if the OSS audio interface is supported
CheckOSS()
{
AC_ARG_ENABLE(oss,
[AS_HELP_STRING([--enable-oss], [support the OSS audio API [default=maybe]])],
, enable_oss=maybe)
# OpenBSD "has" OSS, but it's not really for app use. They want you to
# use sndio instead. So on there, we default to disabled. You can force
# it on if you really want, though.
if test x$enable_oss = xmaybe; then
enable_oss=yes
case "$host" in
*-*-openbsd*)
enable_oss=no;;
esac
fi
if test x$enable_audio = xyes -a x$enable_oss = xyes; then
AC_MSG_CHECKING(for OSS audio support)
have_oss=no
if test x$have_oss != xyes; then
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/soundcard.h>
]], [[
int arg = SNDCTL_DSP_SETFRAGMENT;
]])], [have_oss=yes],[])
fi
if test x$have_oss != xyes; then
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <soundcard.h>
]], [[
int arg = SNDCTL_DSP_SETFRAGMENT;
]])], [
have_oss=yes
AC_DEFINE(SDL_AUDIO_DRIVER_OSS_SOUNDCARD_H, 1, [ ])
],[])
fi
AC_MSG_RESULT($have_oss)
if test x$have_oss = xyes; then
SUMMARY_audio="${SUMMARY_audio} oss"
AC_DEFINE(SDL_AUDIO_DRIVER_OSS, 1, [ ])
SOURCES="$SOURCES $srcdir/src/audio/dsp/*.c"
have_audio=yes
# We may need to link with ossaudio emulation library
case "$host" in
*-*-openbsd*|*-*-netbsd*)
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lossaudio";;
esac
fi
fi
}
dnl See if the ALSA audio interface is supported
CheckALSA()
{
AC_ARG_ENABLE(alsa,
[AS_HELP_STRING([--enable-alsa], [support the ALSA audio API [default=yes]])],
, enable_alsa=yes)
if test x$enable_audio = xyes -a x$enable_alsa = xyes; then
AM_PATH_ALSA(1.0.11, have_alsa=yes, have_alsa=no)
# Restore all flags from before the ALSA detection runs
CFLAGS="$alsa_save_CFLAGS"
LDFLAGS="$alsa_save_LDFLAGS"
LIBS="$alsa_save_LIBS"
if test x$have_alsa = xyes; then
AC_ARG_ENABLE(alsa-shared,
[AS_HELP_STRING([--enable-alsa-shared], [dynamically load ALSA audio support [default=yes]])],
, enable_alsa_shared=yes)
alsa_lib=[`find_lib "libasound.so.*" "$ALSA_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
AC_DEFINE(SDL_AUDIO_DRIVER_ALSA, 1, [ ])
SOURCES="$SOURCES $srcdir/src/audio/alsa/*.c"
EXTRA_CFLAGS="$EXTRA_CFLAGS $ALSA_CFLAGS"
if test x$have_loadso != xyes && \
test x$enable_alsa_shared = xyes; then
AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic ALSA loading])
fi
if test x$have_loadso = xyes && \
test x$enable_alsa_shared = xyes && test x$alsa_lib != x; then
echo "-- dynamic libasound -> $alsa_lib"
AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_ALSA_DYNAMIC, "$alsa_lib", [ ])
SUMMARY_audio="${SUMMARY_audio} alsa(dynamic)"
else
EXTRA_LDFLAGS="$EXTRA_LDFLAGS $ALSA_LIBS"
SUMMARY_audio="${SUMMARY_audio} alsa"
fi
have_audio=yes
fi
fi
}
dnl Find JACK Audio
CheckJACK()
{
AC_ARG_ENABLE(jack,
[AS_HELP_STRING([--enable-jack], [use JACK audio [default=yes]])],
, enable_jack=yes)
if test x$enable_audio = xyes -a x$enable_jack = xyes; then
PKG_CHECK_MODULES([JACK], [jack >= 0.125], audio_jack=yes, audio_jack=no)
if test x$audio_jack = xyes; then
AC_ARG_ENABLE(jack-shared,
[AS_HELP_STRING([--enable-jack-shared], [dynamically load JACK audio support [default=yes]])],
, enable_jack_shared=yes)
jack_lib=[`find_lib "libjack.so.*" "$JACK_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]
AC_DEFINE(SDL_AUDIO_DRIVER_JACK, 1, [ ])
SOURCES="$SOURCES $srcdir/src/audio/jack/*.c"
EXTRA_CFLAGS="$EXTRA_CFLAGS $JACK_CFLAGS"
if test x$have_loadso != xyes && \
test x$enable_jack_shared = xyes; then
AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic JACK audio loading])
fi
if test x$have_loadso = xyes && \
test x$enable_jack_shared = xyes && test x$jack_lib != x; then
echo "-- dynamic libjack -> $jack_lib"
AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_JACK_DYNAMIC, "$jack_lib", [ ])
SUMMARY_audio="${SUMMARY_audio} jack(dynamic)"
case "$host" in
# On Solaris, jack must be linked deferred explicitly
# to prevent undefined symbol failures.
*-*-solaris*)
JACK_LIBS=`echo $JACK_LIBS | sed 's/\-l/-Wl,-l/g'`
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-zdeferred $JACK_LIBS -Wl,-znodeferred"
esac
else
EXTRA_LDFLAGS="$EXTRA_LDFLAGS $JACK_LIBS"
SUMMARY_audio="${SUMMARY_audio} jack"
fi
have_audio=yes
fi
fi
}
dnl Find the ESD includes and libraries
CheckESD()
{
AC_ARG_ENABLE(esd,
[AS_HELP_STRING([--enable-esd], [support the Enlightened Sound Daemon [default=yes]])],
, enable_esd=yes)
if test x$enable_audio = xyes -a x$enable_esd = xyes; then
AM_PATH_ESD(0.2.8, have_esd=yes, have_esd=no)
if test x$have_esd = xyes; then
AC_ARG_ENABLE(esd-shared,