dnl Process this file with autoconf to produce a configure script.

AC_INIT(README.txt)

AC_CONFIG_HEADER(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

#

# Making releases:

# Edit include/SDL_version.h and change the version, then:

# SDL_MICRO_VERSION += 1;

# SDL_INTERFACE_AGE += 1;

# SDL_BINARY_AGE += 1;

# if any functions have been added, set SDL_INTERFACE_AGE to 0.

# if backwards compatibility has been broken,

# set SDL_BINARY_AGE and SDL_INTERFACE_AGE to 0.

#

SDL_MAJOR_VERSION=2

SDL_MINOR_VERSION=0

SDL_MICRO_VERSION=5

SDL_INTERFACE_AGE=0

SDL_BINARY_AGE=5

SDL_VERSION=$SDL_MAJOR_VERSION.$SDL_MINOR_VERSION.$SDL_MICRO_VERSION

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_RELEASE=$SDL_MAJOR_VERSION.$SDL_MINOR_VERSION

LT_CURRENT=`expr $SDL_MICRO_VERSION - $SDL_INTERFACE_AGE`

LT_REVISION=$SDL_INTERFACE_AGE

LT_AGE=`expr $SDL_BINARY_AGE - $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_LIBTOOL

AC_PROG_CC

AC_PROG_CXX

AC_PROG_INSTALL

AC_PROG_MAKE_SET

AC_CHECK_TOOL(WINDRES, [windres], [:])

dnl Make sure that srcdir is a full pathname

case "$host" in

*-*-mingw32*)

# 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"

if test x$srcdir != x.; then

INCLUDE="-Iinclude $INCLUDE"

elif test -d .hg; then

AC_MSG_ERROR([

*** When building from Mercurial 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_TRY_COMPILE([

],[

],[

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 $BASE_LDFLAGS"

CPPFLAGS="$CPPFLAGS $EXTRA_CFLAGS"

CFLAGS="$CFLAGS $EXTRA_CFLAGS"

LDFLAGS="$LDFLAGS $EXTRA_LDFLAGS"

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

}

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,

AC_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 See whether we can use gcc style dependency tracking

AC_ARG_ENABLE(dependency-tracking,

AC_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_TRY_COMPILE([

#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_TRY_LINK([

],[

],[

have_no_undefined=yes

EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,--no-undefined"

])

LDFLAGS="$save_LDFLAGS"

;;

esac

AC_MSG_RESULT($have_no_undefined)

dnl See whether we are allowed to use the system C library

AC_ARG_ENABLE(libc,

AC_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 ctype.h math.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)

dnl Checks for library functions.

case "$host" in

*-*-cygwin* | *-*-mingw32*)

;;

*)

AC_FUNC_ALLOCA

;;

esac

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_TRY_COMPILE([

#include <sys/types.h>

#include <sys/mman.h>

],[

],[

AC_DEFINE(HAVE_MPROTECT, 1, [ ])

]),

)

AC_CHECK_FUNCS(malloc calloc realloc free getenv setenv putenv unsetenv qsort abs bcopy memset memcpy memmove wcslen wcslcpy wcslcat wcscmp strlen strlcpy strlcat strdup _strrev _strupr _strlwr strchr strrchr strstr 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 poll)

AC_CHECK_LIB(m, pow, [LIBS="$LIBS -lm"; EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lm"])

AC_CHECK_FUNCS(atan atan2 acos asin ceil copysign cos cosf fabs floor log pow scalbn 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>])

fi

dnl AC_CHECK_SIZEOF(void*)

dnl See whether we can use gcc atomic operations on this architecture

AC_ARG_ENABLE(gcc-atomics,

AC_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_TRY_LINK([

],[

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_TRY_LINK([

],[

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/joystick/*.c"

SOURCES="$SOURCES $srcdir/src/libm/*.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/stdlib/*.c"

SOURCES="$SOURCES $srcdir/src/thread/*.c"

SOURCES="$SOURCES $srcdir/src/timer/*.c"

SOURCES="$SOURCES $srcdir/src/video/*.c"

dnl Enable/disable various subsystems of the SDL library

AC_ARG_ENABLE(atomic,

AC_HELP_STRING([--enable-atomic], [Enable the atomic operations subsystem [[default=yes]]]),

, enable_atomic=yes)

if test x$enable_atomic != xyes; then

AC_DEFINE(SDL_ATOMIC_DISABLED, 1, [ ])

else

SUMMARY_modules="${SUMMARY_modules} atomic"

fi

AC_ARG_ENABLE(audio,

AC_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,

AC_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,

AC_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,

AC_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,

AC_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,

AC_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(power,

AC_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,

AC_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,

AC_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,

AC_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,

AC_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(loadso,

AC_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,

AC_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,

AC_HELP_STRING([--enable-assembly], [Enable assembly routines [[default=yes]]]),

, enable_assembly=yes)

if test x$enable_assembly = xyes; then

SUMMARY_modules="${SUMMARY_modules} assembly"

AC_DEFINE(SDL_ASSEMBLY_ROUTINES, 1, [ ])

# 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,

AC_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,

AC_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_TRY_COMPILE([

#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,

AC_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_TRY_LINK([

#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,

AC_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_TRY_COMPILE([

#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,

AC_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_TRY_COMPILE([

#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,

AC_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_TRY_COMPILE([

#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_ARG_ENABLE(altivec,

AC_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_TRY_COMPILE([

#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_TRY_COMPILE([

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_TRY_COMPILE([

#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_TRY_COMPILE([

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,

AC_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_TRY_COMPILE([

#include <sys/soundcard.h>

],[

int arg = SNDCTL_DSP_SETFRAGMENT;

],[

have_oss=yes

])

fi

if test x$have_oss != xyes; then

AC_TRY_COMPILE([

#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,

AC_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,

AC_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,

AC_HELP_STRING([--enable-jack], [use JACK audio [[default=yes]]]),

, enable_jack=yes)

if test x$enable_audio = xyes -a x$enable_jack = xyes; then

audio_jack=no

JACK_REQUIRED_VERSION=0.125

AC_PATH_PROG(PKG_CONFIG, pkg-config, no)

AC_MSG_CHECKING(for JACK $JACK_REQUIRED_VERSION support)

if test x$PKG_CONFIG != xno; then

if $PKG_CONFIG --atleast-pkgconfig-version 0.7 && $PKG_CONFIG --atleast-version $JACK_REQUIRED_VERSION jack; then

JACK_CFLAGS=`$PKG_CONFIG --cflags jack`

JACK_LIBS=`$PKG_CONFIG --libs jack`

audio_jack=yes

fi

fi

AC_MSG_RESULT($audio_jack)

if test x$audio_jack = xyes; then

AC_ARG_ENABLE(jack-shared,

AC_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,

AC_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,

AC_HELP_STRING([--enable-esd-shared], [dynamically load ESD audio support [[default=yes]]]),

, enable_esd_shared=yes)

esd_lib=[`find_lib "libesd.so.*" "$ESD_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]

AC_DEFINE(SDL_AUDIO_DRIVER_ESD, 1, [ ])

SOURCES="$SOURCES $srcdir/src/audio/esd/*.c"

EXTRA_CFLAGS="$EXTRA_CFLAGS $ESD_CFLAGS"

if test x$have_loadso != xyes && \

test x$enable_esd_shared = xyes; then

AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic ESD loading])

fi

if test x$have_loadso = xyes && \

test x$enable_esd_shared = xyes && test x$esd_lib != x; then

echo "-- dynamic libesd -> $esd_lib"

AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_ESD_DYNAMIC, "$esd_lib", [ ])

SUMMARY_audio="${SUMMARY_audio} esd(dynamic)"

else

EXTRA_LDFLAGS="$EXTRA_LDFLAGS $ESD_LIBS"

SUMMARY_audio="${SUMMARY_audio} esd"

fi

have_audio=yes

fi

fi

}

dnl Find PulseAudio

CheckPulseAudio()

{

AC_ARG_ENABLE(pulseaudio,

AC_HELP_STRING([--enable-pulseaudio], [use PulseAudio [[default=yes]]]),

, enable_pulseaudio=yes)

if test x$enable_audio = xyes -a x$enable_pulseaudio = xyes; then

audio_pulseaudio=no

PULSEAUDIO_REQUIRED_VERSION=0.9

AC_PATH_PROG(PKG_CONFIG, pkg-config, no)

AC_MSG_CHECKING(for PulseAudio $PULSEAUDIO_REQUIRED_VERSION support)

if test x$PKG_CONFIG != xno; then

if $PKG_CONFIG --atleast-pkgconfig-version 0.7 && $PKG_CONFIG --atleast-version $PULSEAUDIO_REQUIRED_VERSION libpulse-simple; then

PULSEAUDIO_CFLAGS=`$PKG_CONFIG --cflags libpulse-simple`

PULSEAUDIO_LIBS=`$PKG_CONFIG --libs libpulse-simple`

audio_pulseaudio=yes

fi

fi

AC_MSG_RESULT($audio_pulseaudio)

if test x$audio_pulseaudio = xyes; then

AC_ARG_ENABLE(pulseaudio-shared,

AC_HELP_STRING([--enable-pulseaudio-shared], [dynamically load PulseAudio support [[default=yes]]]),

, enable_pulseaudio_shared=yes)

pulseaudio_lib=[`find_lib "libpulse-simple.so.*" "$PULSEAUDIO_LIBS" | sed 's/.*\/\(.*\)/\1/; q'`]

AC_DEFINE(SDL_AUDIO_DRIVER_PULSEAUDIO, 1, [ ])

SOURCES="$SOURCES $srcdir/src/audio/pulseaudio/*.c"

EXTRA_CFLAGS="$EXTRA_CFLAGS $PULSEAUDIO_CFLAGS"

if test x$have_loadso != xyes && \

test x$enable_pulseaudio_shared = xyes; then

AC_MSG_WARN([You must have SDL_LoadObject() support for dynamic PulseAudio loading])

fi

if test x$have_loadso = xyes && \

test x$enable_pulseaudio_shared = xyes && test x$pulseaudio_lib != x; then

echo "-- dynamic libpulse-simple -> $pulseaudio_lib"

AC_DEFINE_UNQUOTED(SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC, "$pulseaudio_lib", [ ])

SUMMARY_audio="${SUMMARY_audio} pulse(dynamic)"

case "$host" in

# On Solaris, pulseaudio must be linked deferred explicitly

# to prevent undefined symbol failures.

*-*-solaris*)

PULSEAUDIO_LIBS=`echo $PULSEAUDIO_LIBS | sed 's/\-l/-Wl,-l/g'`

EXTRA_LDFLAGS="$EXTRA_LDFLAGS -Wl,-zdeferred $PULSEAUDIO_LIBS -Wl,-znodeferred"

esac

else

EXTRA_LDFLAGS="$EXTRA_LDFLAGS $PULSEAUDIO_LIBS"

SUMMARY_audio="${SUMMARY_audio} pulse"

fi

have_audio=yes

fi

fi

}

CheckARTSC()

{

AC_ARG_ENABLE(arts,

AC_HELP_STRING([--enable-arts], [support the Analog Real Time Synthesizer [[default=yes]]]),

, enable_arts=yes)

if test x$enable_audio = xyes -a x$enable_arts = xyes; then

AC_PATH_PROG(ARTSCONFIG, artsc-config)

if test x$ARTSCONFIG = x -o x$ARTSCONFIG = x'"$ARTSCONFIG"'; then

: # arts isn't installed

else