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configure.ac

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dnl Process this file with autoconf to produce a configure script.
AC_PREREQ([2.65])
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="$CFLAGS"
dnl Set various version strings - taken gratefully from the GTk sources
# See docs/release_checklist.md
SDL_MAJOR_VERSION=2
SDL_MINOR_VERSION=29
SDL_MICRO_VERSION=0
SDL_VERSION=$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_AWK
AC_PROG_CC
AC_PROG_CXX
AC_PROG_EGREP
AC_PROG_FGREP
AC_PROG_INSTALL
AC_PROG_MAKE_SET
PKG_PROG_PKG_CONFIG
if [ test -z "$AWK" ]; then
AC_MSG_ERROR([*** awk not found, aborting])
fi
AC_CHECK_PROGS([SORT], [gsort sort], [false])
AS_IF([! "$SORT" -V </dev/null >/dev/null], [AC_MSG_WARN([sort(1) that supports the -V option is required to find dynamic libraries])])
dnl 64-bit file offsets if possible unless --disable-largefile is specified
AC_SYS_LARGEFILE
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/$1 2>/dev/null | sed 's,.*/,,' | "$SORT" -V -r | $AWK 'BEGIN{FS="."}{ print NF, $0 }' | "$SORT" -n -s | sed 's,[0-9]* ,,' | head -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
dnl For use in static assertions
EXTRA_CFLAGS="$EXTRA_CFLAGS -DSDL_BUILD_MAJOR_VERSION=$SDL_MAJOR_VERSION -DSDL_BUILD_MINOR_VERSION=$SDL_MINOR_VERSION -DSDL_BUILD_MICRO_VERSION=$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($have_high_entropy_va)
dnl See whether we are allowed to use the system C library
AC_ARG_ENABLE(libc,
[AS_HELP_STRING([--enable-libc], [Use the system C library [default=yes]])],
, enable_libc=yes)
dnl See whether we are allowed to use system iconv
enable_system_iconv_default=yes
case "$host" in
*-*-cygwin*|*-*-mingw*)
enable_system_iconv_default=no
;;
esac
AC_ARG_ENABLE(system-iconv,
[AS_HELP_STRING([--enable-system-iconv], [Use iconv() from system-installed libraries [default=no for windows, yes for others]])],
, enable_system_iconv=$enable_system_iconv_default)
dnl See whether we prefer libiconv over libc
AC_ARG_ENABLE(libiconv,
[AS_HELP_STRING([--enable-libiconv], [Prefer iconv() from libiconv, if available, over libc version [default=no]])],
, enable_libiconv=no)
if test x$enable_libc = xyes; then
AC_DEFINE(HAVE_LIBC, 1, [ ])
dnl Check for C library headers
dnl AC_CHECK_INCLUDES_DEFAULT is an autoconf-2.7x thing where AC_HEADER_STDC is deprecated.
m4_ifdef([AC_CHECK_INCLUDES_DEFAULT], [AC_CHECK_INCLUDES_DEFAULT], [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_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 memcmp 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 strtod strtol strtoul _i64toa _ui64toa strtoll strtoull atoi atof strcmp strncmp _stricmp strcasecmp _strnicmp strncasecmp strcasestr 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)
if test x$enable_system_iconv = xyes; then
AC_MSG_CHECKING(for iconv in libc)
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#define LIBICONV_PLUG 1 /* in case libiconv header is in include path */
#include <stddef.h>
#include <iconv.h>
]],[[
iconv_open(NULL,NULL);
]])], [have_libc_iconv=yes],[have_libc_iconv=no])
AC_MSG_RESULT($have_libc_iconv)
AC_MSG_CHECKING(for iconv in libiconv)
save_LIBS="$LIBS"
LIBS="$LIBS -liconv"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#include <stddef.h>
#include <iconv.h>
]],[[
iconv_open(NULL,NULL);
]])], [have_libiconv=yes],[have_libiconv=no])
LIBS="$save_LIBS"
AC_MSG_RESULT($have_libiconv)
if test x$have_libc_iconv = xyes || test x$have_libiconv = xyes; then
AC_DEFINE(HAVE_ICONV,1,[ ])
if test x$have_libiconv = xyes; then
if test x$have_libc_iconv != xyes; then
use_libiconv=yes
elif test x$enable_libiconv = xyes; then
use_libiconv=yes
fi
fi
if test x$use_libiconv = xyes; then
AC_DEFINE(SDL_USE_LIBICONV,1,[ ])
EXTRA_LDFLAGS="$EXTRA_LDFLAGS -liconv"
echo "-- Using iconv from libiconv"
else
echo "-- Using iconv from libc"
fi
fi
fi
AC_CHECK_MEMBER(struct sigaction.sa_sigaction,[AC_DEFINE([HAVE_SA_SIGACTION], 1, [ ])], ,[#include <signal.h>])
dnl Check for additional non-standard headers
AC_CHECK_HEADERS(libunwind.h)
fi
dnl AC_CHECK_SIZEOF(void*)
dnl See whether we can use gcc atomic operations on this architecture
AC_ARG_ENABLE(gcc-atomics,
[AS_HELP_STRING([--enable-gcc-atomics],
[Use gcc builtin atomics [default=yes]])],
, enable_gcc_atomics=yes)
if test x$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="${SUMMARY_modules} filesystem"
fi
# Many subsystems depend on threads, so leave them enabled by default
#AC_ARG_ENABLE(threads,
#[AS_HELP_STRING([--enable-threads], [Enable the threading subsystem [default=yes]])],
# , enable_threads=yes)
enable_threads=yes
if test x$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
AC_ARG_ENABLE(lsx,
[AS_HELP_STRING([--enable-lsx], [use LSX assembly routines [default=yes]])],
, enable_lsx=yes)
if test x$enable_lsx = xyes; then
save_CFLAGS="$CFLAGS"
have_gcc_lsx=no
AC_MSG_CHECKING(for GCC -mlsx option)
lsx_CFLAGS="-mlsx"
CFLAGS="$save_CFLAGS $lsx_CFLAGS"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifndef __loongarch_sx
#error Assembler CPP flag not enabled
#endif
]], [])], [have_gcc_lsx=yes], [])
AC_MSG_RESULT($have_gcc_lsx)
CFLAGS="$save_CFLAGS"
if test x$have_gcc_lsx = xyes; then
EXTRA_CFLAGS="$EXTRA_CFLAGS $lsx_CFLAGS"
SUMMARY_math="${SUMMARY_math} lsx"
fi
fi
AC_MSG_CHECKING(for lsxintrin.h)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <lsxintrin.h>]])],
[have_lsxintrin_h_hdr=yes],[have_lsxintrin_h_hdr=no])
AC_MSG_RESULT($have_lsxintrin_h_hdr)
if test x$have_lsxintrin_h_hdr = xyes; then
AC_DEFINE(HAVE_LSXINTRIN_H, 1, [ ])
fi
AC_ARG_ENABLE(lasx,
[AS_HELP_STRING([--enable-lasx], [use LASX assembly routines [default=yes]])],
, enable_LASX=yes)
if test x$enable_LASX = xyes; then
save_CFLAGS="$CFLAGS"
have_gcc_lasx=no
AC_MSG_CHECKING(for GCC -mlasx option)
lasx_CFLAGS="-mlasx"
CFLAGS="$save_CFLAGS $lasx_CFLAGS"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifndef __loongarch_asx
#error Assembler CPP flag not enabled
#endif
]], [])], [have_gcc_lasx=yes], [])
AC_MSG_RESULT($have_gcc_lasx)
CFLAGS="$save_CFLAGS"
if test x$have_gcc_lasx = xyes; then
EXTRA_CFLAGS="$EXTRA_CFLAGS $lasx_CFLAGS"
SUMMARY_math="${SUMMARY_math} lasx"
fi
fi
AC_MSG_CHECKING(for lasxintrin.h)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <lasxintrin.h>]])],
[have_lasxintrin_h_hdr=yes],[have_lasxintrin_h_hdr=no])
AC_MSG_RESULT($have_lasxintrin_h_hdr)
if test x$have_lasxintrin_h_hdr = xyes; then
AC_DEFINE(HAVE_LASXINTRIN_H, 1, [ ])
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)
if test x$enable_oss = xmaybe; then
enable_oss=yes
fi
if test x$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
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
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