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

AC_PREREQ(2.54)

AC_INIT(src/pixman.h)

dnl ===========================================================================

# Package version number, (as distinct from shared library version)
LIBPIXMAN_VERSION=0.1.6-head

# libtool shared library version

# Increment if the interface has additions, changes, removals.
LT_CURRENT=1

# Increment any time the source changes; set to
# 0 if you increment CURRENT
LT_REVISION=0

# Increment if any interfaces have been added; set to 0
# if any interfaces have been removed. removal has
# precedence over adding, so set to 0 if both happened.
LT_AGE=0

VERSION_INFO="$LT_CURRENT:$LT_REVISION:$LT_AGE"
AC_SUBST(VERSION_INFO)

dnl ===========================================================================

AM_INIT_AUTOMAKE(libpixman, $LIBPIXMAN_VERSION)
AM_CONFIG_HEADER(config.h)

AM_MAINTAINER_MODE

AC_PROG_CC
AM_PROG_LIBTOOL

AC_C_BIGENDIAN

dnl Use lots of warning flags with GCC

WARN_CFLAGS=""

if test "x$GCC" = "xyes"; then
	WARN_CFLAGS="-Wall -Wpointer-arith -Wstrict-prototypes \
	-Wmissing-prototypes -Wmissing-declarations \
	-Wnested-externs -fno-strict-aliasing \
	-Wno-attributes"
fi

AC_SUBST(WARN_CFLAGS)

dnl ===========================================================================
dnl Check for MMX

MMX_CFLAGS="-mmmx -msse -Winline --param inline-unit-growth=10000 --param large-function-growth=10000"

have_mmx_intrinsics=no
AC_MSG_CHECKING(For MMX/SSE intrinsics in the compiler)
xserver_save_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $MMX_CFLAGS"
AC_COMPILE_IFELSE([
#if defined(__GNUC__) && (__GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4))
#error "Need GCC >= 3.4 for MMX intrinsics"
#endif
#include <mmintrin.h>
#include <xmmintrin.h>
int main () {
    __m64 v = _mm_cvtsi32_si64 (1);
    v = _mm_shuffle_pi16 (v, _MM_SHUFFLE(3, 3, 3, 3));
    return _mm_cvtsi64_si32 (v);
}], have_mmx_intrinsics=yes)
CFLAGS=$xserver_save_CFLAGS
AC_MSG_RESULT($have_mmx_intrinsics)

if test $have_mmx_intrinsics = yes ; then
   AC_DEFINE(USE_MMX, 1, [use MMX compiler intrinsics])
else
   MMX_CFLAGS=
fi
AC_SUBST(MMX_CFLAGS)

AM_CONDITIONAL(USE_MMX, test $have_mmx_intrinsics = yes)

dnl ===========================================================================

AC_OUTPUT([
libpixman.pc
Makefile
src/Makefile
])