configure.ac - third_party/pixman - Git at Google

 dnl  Copyright 2005 Red Hat, Inc.
 dnl
 dnl  Permission to use, copy, modify, distribute, and sell this software and its
 dnl  documentation for any purpose is hereby granted without fee, provided that
 dnl  the above copyright notice appear in all copies and that both that
 dnl  copyright notice and this permission notice appear in supporting
 dnl  documentation, and that the name of Red Hat not be used in
 dnl  advertising or publicity pertaining to distribution of the software without
 dnl  specific, written prior permission.  Red Hat makes no
 dnl  representations about the suitability of this software for any purpose.  It
 dnl  is provided "as is" without express or implied warranty.
 dnl
 dnl  RED HAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 dnl  INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 dnl  EVENT SHALL RED HAT BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 dnl  CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 dnl  DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 dnl  TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 dnl  PERFORMANCE OF THIS SOFTWARE.
 dnl
 dnl Process this file with autoconf to create configure.

 AC_PREREQ([2.57])

 #   Pixman versioning scheme
 #
 #   - The git version must at all times have an odd MICRO version
 #     number.
 #
 #   - If you add API, increment the MICRO version to the next largest
 #     odd number.
 #
 #   - If you release a version that contains new API, then increment
 #     MINOR and set MICRO to 0.
 #
 #   - If you release a new version that does not contain new API, then
 #     increment MICRO to the next even number.
 #
 #   - After doing a release, increment MICRO again to make the version
 #     number in git odd.
 #
 #   - If you break the ABI, then
 #
 #        - increment MAJOR
 #
 #        - In the first development release where you break ABI, find
 #          all instances of "pixman-n" and change them to pixman-(n+1)
 #
 #          This needs to be done at least in
 #                    configure.ac
 #                    all Makefile.am's
 #                    pixman-n.pc.in
 #
 #      This ensures that binary incompatible versions can be installed
 #      in parallel.  See http://www106.pair.com/rhp/parallel.html for
 #      more information

 m4_define([pixman_major], 0)
 m4_define([pixman_minor], 11)
 m4_define([pixman_micro], 6)

 m4_define([pixman_version],[pixman_major.pixman_minor.pixman_micro])

 AC_INIT(pixman, pixman_version, "sandmann@daimi.au.dk", pixman)
 AM_INIT_AUTOMAKE([dist-bzip2])

 AM_CONFIG_HEADER(config.h)

 AC_PROG_CC
 AC_PROG_LIBTOOL
 AC_CHECK_FUNCS([getisax])
 AC_C_BIGENDIAN

 #
 # We ignore pixman_major in the version here because the major version should
 # always be encoded in the actual library name. Ie., the soname is:
 #
 #      pixman-$(pixman_major).0.minor.micro
 #
 m4_define([lt_current], [pixman_minor])
 m4_define([lt_revision], [pixman_micro])
 m4_define([lt_age], [pixman_minor])

 LT_VERSION_INFO="lt_current:lt_revision:lt_age"

 PIXMAN_VERSION_MAJOR=pixman_major()
 AC_SUBST(PIXMAN_VERSION_MAJOR)
 PIXMAN_VERSION_MINOR=pixman_minor()
 AC_SUBST(PIXMAN_VERSION_MINOR)
 PIXMAN_VERSION_MICRO=pixman_micro()
 AC_SUBST(PIXMAN_VERSION_MICRO)

 AC_SUBST(LT_VERSION_INFO)

 # Check for dependencies
 #PKG_CHECK_MODULES(DEP, x11)

 changequote(,)dnl
 if test "x$GCC" = "xyes"; then
   case " $CFLAGS " in
   *[\ \	]-Wall[\ \	]*) ;;
   *) CFLAGS="$CFLAGS -Wall" ;;
   esac fi changequote([,])dnl

 AC_PATH_PROG(PERL, perl, no)
 if test "x$PERL" = xno; then
     AC_MSG_ERROR([Perl is required to build pixman.])
 fi
 AC_SUBST(PERL)

 dnl =========================================================================
 dnl -fvisibility stuff

 have_gcc4=no
 AC_MSG_CHECKING(for -fvisibility)
 AC_COMPILE_IFELSE([
 #if defined(__GNUC__) && (__GNUC__ >= 4)
 #else
 #error Need GCC 4.0 for visibility
 #endif
 int main () { return 0; }
 ], have_gcc4=yes)

 if test "x$have_gcc4" = "xyes"; then
    CFLAGS="$CFLAGS -fvisibility=hidden"
 fi
 AC_MSG_RESULT($have_gcc4)

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

 MMX_CFLAGS="-mmmx -Winline"

 if test "x$GCC" = "xyes"; then
     MMX_CFLAGS="$MMX_CFLAGS --param inline-unit-growth=10000 --param large-function-growth=10000"
 fi

 have_mmx_intrinsics=no
 AC_MSG_CHECKING(whether to use MMX intrinsics)
 xserver_save_CFLAGS=$CFLAGS
 CFLAGS="$CFLAGS $MMX_CFLAGS"
 AC_COMPILE_IFELSE([
 #if defined(__GNUC__) && (__GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4))
 #error "Need GCC >= 3.4 for MMX intrinsics"
 #endif
 #include <mmintrin.h>
 int main () {
     __m64 v = _mm_cvtsi32_si64 (1);
     return _mm_cvtsi64_si32 (v);
 }], have_mmx_intrinsics=yes)
 CFLAGS=$xserver_save_CFLAGS

 AC_ARG_ENABLE(mmx,
    [AC_HELP_STRING([--disable-mmx],
                    [disable MMX fast paths])],
    [disable_mmx=yes], [disable_mmx=no])

 if test $disable_mmx = yes ; then
    have_mmx_intrinsics=disabled
 fi

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

 AC_MSG_RESULT($have_mmx_intrinsics)

 AM_CONDITIONAL(USE_MMX, test $have_mmx_intrinsics = yes)

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

 dnl GCC 4.2 when compiling with -msse will generate SSE instructions
 dnl on its own.  This means anything compiled with -mss can only be
 dnl run after a runtime check for SSE.  Unfortunately, since we still
 dnl need to support MMX-but-not-SSE (such as the OLPC), this means we
 dnl can only use SSE when compiling for x86-64 (where SSE is always
 dnl supported).

 have_sse_intrinsics=no
 AC_MSG_CHECKING(whether to use SSE intrinsics)
 xserver_save_CFLAGS=$CFLAGS
 CFLAGS="$CFLAGS -msse $MMX_CFLAGS"

 AC_COMPILE_IFELSE([
 #if defined(__GNUC__) && (__GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4))
 #error "Need GCC >= 3.4 for SSE intrinsics"
 #endif
 #if !defined(__amd64__) && !defined(__x86_64__)
 #error "Need x86-64 for SSE"
 #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_sse_intrinsics=yes)
 CFLAGS=$xserver_save_CFLAGS
 AC_MSG_RESULT($have_sse_intrinsics)

 if test $have_sse_intrinsics = yes ; then
    AC_DEFINE(USE_SSE, 1, [use SSE compiler intrinsics])
    MMX_CFLAGS="-msse $MMX_CFLAGS"
 fi

 AM_CONDITIONAL(USE_SSE, test $have_sse_intrinsics = yes)


 dnl ===========================================================================
 dnl Check for SSE2

 SSE_CFLAGS="-mmmx -msse2 -Winline"

 if test "x$GCC" = "xyes"; then
     SSE_CFLAGS="$SSE_CFLAGS --param inline-unit-growth=10000 --param large-function-growth=10000 --param  max-inline-insns-single=6000"
 fi

 have_sse2_intrinsics=no
 AC_MSG_CHECKING(whether to use SSE2 intrinsics)
 xserver_save_CFLAGS=$CFLAGS
 CFLAGS="$CFLAGS -msse2 $SSE_CFLAGS"

 AC_COMPILE_IFELSE([
 #if defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 2))
 #error "Need GCC >= 4.2 for SSE2 intrinsics"
 #endif
 #include <mmintrin.h>
 #include <xmmintrin.h>
 #include <emmintrin.h>
 int main () {
     __m128i a, b, c;
 	c = _mm_xor_si128 (a, b);
     return 0;
 }], have_sse2_intrinsics=yes)
 CFLAGS=$xserver_save_CFLAGS

 AC_ARG_ENABLE(sse2,
    [AC_HELP_STRING([--disable-sse2],
                    [disable SSE2 fast paths])],
    [disable_sse2=yes], [disable_sse2=no])

 if test $disable_sse2 = yes ; then
    have_sse2_intrinsics=disabled
 fi

 if test $have_sse2_intrinsics = yes ; then
    AC_DEFINE(USE_SSE2, 1, [use SSE2 compiler intrinsics])
 fi

 AC_MSG_RESULT($have_sse2_intrinsics)

 AM_CONDITIONAL(USE_SSE2, test $have_sse2_intrinsics = yes)

 dnl ========================================================
 AC_SUBST(MMX_CFLAGS)
 AC_SUBST(SSE_CFLAGS)

 dnl Check for VMX/Altivec
 if test -n "`$CC -v 2>&1 | grep version | grep Apple`"; then
     VMX_CFLAGS="-faltivec"
 else
     VMX_CFLAGS="-maltivec -mabi=altivec"
 fi

 have_vmx_intrinsics=no
 AC_MSG_CHECKING(whether to use VMX/Altivec intrinsics)
 xserver_save_CFLAGS=$CFLAGS
 CFLAGS="$CFLAGS $VMX_CFLAGS"
 AC_COMPILE_IFELSE([
 #if defined(__GNUC__) && (__GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4))
 #error "Need GCC >= 3.4 for sane altivec support"
 #endif
 #include <altivec.h>
 int main () {
     vector unsigned int v = vec_splat_u32 (1);
     v = vec_sub (v, v);
     return 0;
 }], have_vmx_intrinsics=yes)
 CFLAGS=$xserver_save_CFLAGS

 AC_ARG_ENABLE(vmx,
    [AC_HELP_STRING([--disable-vmx],
                    [disable VMX fast paths])],
    [disable_vmx=yes], [disable_vmx=no])

 if test $disable_vmx = yes ; then
    have_vmx_intrinsics=disabled
 fi

 if test $have_vmx_intrinsics = yes ; then
    AC_DEFINE(USE_VMX, 1, [use VMX compiler intrinsics])
 else
    VMX_CFLAGS=
 fi

 AC_MSG_RESULT($have_vmx_intrinsics)

 AC_SUBST(VMX_CFLAGS)

 AM_CONDITIONAL(USE_VMX, test $have_vmx_intrinsics = yes)

 AC_ARG_ENABLE(gtk,
    [AC_HELP_STRING([--disable-gtk],
                    [disable tests using GTK+])],
    [disable_gtk=yes], [disable_gtk=no])

 if test $disable_gtk = no ; then
    PKG_CHECK_MODULES(GTK, [gtk+-2.0], [HAVE_GTK=yes], [HAVE_GTK=no])
 else
    HAVE_GTK=no
 fi

 AM_CONDITIONAL(HAVE_GTK, [test "x$HAVE_GTK" = xyes])

 AC_SUBST(GTK_CFLAGS)
 AC_SUBST(GTK_LIBS)
 AC_SUBST(DEP_CFLAGS)
 AC_SUBST(DEP_LIBS)

 AC_OUTPUT([pixman-1.pc
            Makefile
 	   pixman/Makefile
 	   pixman/pixman-version.h
 	   test/Makefile])
	dnl Copyright 2005 Red Hat, Inc.
	dnl
	dnl Permission to use, copy, modify, distribute, and sell this software and its
	dnl documentation for any purpose is hereby granted without fee, provided that
	dnl the above copyright notice appear in all copies and that both that
	dnl copyright notice and this permission notice appear in supporting
	dnl documentation, and that the name of Red Hat not be used in
	dnl advertising or publicity pertaining to distribution of the software without
	dnl specific, written prior permission. Red Hat makes no
	dnl representations about the suitability of this software for any purpose. It
	dnl is provided "as is" without express or implied warranty.
	dnl
	dnl RED HAT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
	dnl INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
	dnl EVENT SHALL RED HAT BE LIABLE FOR ANY SPECIAL, INDIRECT OR
	dnl CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
	dnl DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
	dnl TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
	dnl PERFORMANCE OF THIS SOFTWARE.
	dnl
	dnl Process this file with autoconf to create configure.

	AC_PREREQ([2.57])

	# Pixman versioning scheme
	#
	# - The git version must at all times have an odd MICRO version
	# number.
	#
	# - If you add API, increment the MICRO version to the next largest
	# odd number.
	#
	# - If you release a version that contains new API, then increment
	# MINOR and set MICRO to 0.
	#
	# - If you release a new version that does not contain new API, then
	# increment MICRO to the next even number.
	#
	# - After doing a release, increment MICRO again to make the version
	# number in git odd.
	#
	# - If you break the ABI, then
	#
	# - increment MAJOR
	#
	# - In the first development release where you break ABI, find
	# all instances of "pixman-n" and change them to pixman-(n+1)
	#
	# This needs to be done at least in
	# configure.ac
	# all Makefile.am's
	# pixman-n.pc.in
	#
	# This ensures that binary incompatible versions can be installed
	# in parallel. See http://www106.pair.com/rhp/parallel.html for
	# more information

	m4_define([pixman_major], 0)
	m4_define([pixman_minor], 11)
	m4_define([pixman_micro], 6)

	m4_define([pixman_version],[pixman_major.pixman_minor.pixman_micro])

	AC_INIT(pixman, pixman_version, "sandmann@daimi.au.dk", pixman)
	AM_INIT_AUTOMAKE([dist-bzip2])

	AM_CONFIG_HEADER(config.h)

	AC_PROG_CC
	AC_PROG_LIBTOOL
	AC_CHECK_FUNCS([getisax])
	AC_C_BIGENDIAN

	#
	# We ignore pixman_major in the version here because the major version should
	# always be encoded in the actual library name. Ie., the soname is:
	#
	# pixman-$(pixman_major).0.minor.micro
	#
	m4_define([lt_current], [pixman_minor])
	m4_define([lt_revision], [pixman_micro])
	m4_define([lt_age], [pixman_minor])

	LT_VERSION_INFO="lt_current:lt_revision:lt_age"

	PIXMAN_VERSION_MAJOR=pixman_major()
	AC_SUBST(PIXMAN_VERSION_MAJOR)
	PIXMAN_VERSION_MINOR=pixman_minor()
	AC_SUBST(PIXMAN_VERSION_MINOR)
	PIXMAN_VERSION_MICRO=pixman_micro()
	AC_SUBST(PIXMAN_VERSION_MICRO)

	AC_SUBST(LT_VERSION_INFO)

	# Check for dependencies
	#PKG_CHECK_MODULES(DEP, x11)

	changequote(,)dnl
	if test "x$GCC" = "xyes"; then
	case " $CFLAGS " in
	[\ \ ]-Wall[\ \ ]) ;;
	*) CFLAGS="$CFLAGS -Wall" ;;
	esac fi changequote([,])dnl

	AC_PATH_PROG(PERL, perl, no)
	if test "x$PERL" = xno; then
	AC_MSG_ERROR([Perl is required to build pixman.])
	fi
	AC_SUBST(PERL)

	dnl =========================================================================
	dnl -fvisibility stuff

	have_gcc4=no
	AC_MSG_CHECKING(for -fvisibility)
	AC_COMPILE_IFELSE([
	#if defined(__GNUC__) && (__GNUC__ >= 4)
	#else
	#error Need GCC 4.0 for visibility
	#endif
	int main () { return 0; }
	], have_gcc4=yes)

	if test "x$have_gcc4" = "xyes"; then
	CFLAGS="$CFLAGS -fvisibility=hidden"
	fi
	AC_MSG_RESULT($have_gcc4)

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

	MMX_CFLAGS="-mmmx -Winline"

	if test "x$GCC" = "xyes"; then
	MMX_CFLAGS="$MMX_CFLAGS --param inline-unit-growth=10000 --param large-function-growth=10000"
	fi

	have_mmx_intrinsics=no
	AC_MSG_CHECKING(whether to use MMX intrinsics)
	xserver_save_CFLAGS=$CFLAGS
	CFLAGS="$CFLAGS $MMX_CFLAGS"
	AC_COMPILE_IFELSE([
	#if defined(__GNUC__) && (__GNUC__ < 3 \|\| (__GNUC__ == 3 && __GNUC_MINOR__ < 4))
	#error "Need GCC >= 3.4 for MMX intrinsics"
	#endif
	#include <mmintrin.h>
	int main () {
	__m64 v = _mm_cvtsi32_si64 (1);
	return _mm_cvtsi64_si32 (v);
	}], have_mmx_intrinsics=yes)
	CFLAGS=$xserver_save_CFLAGS

	AC_ARG_ENABLE(mmx,
	[AC_HELP_STRING([--disable-mmx],
	[disable MMX fast paths])],
	[disable_mmx=yes], [disable_mmx=no])

	if test $disable_mmx = yes ; then
	have_mmx_intrinsics=disabled
	fi

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

	AC_MSG_RESULT($have_mmx_intrinsics)

	AM_CONDITIONAL(USE_MMX, test $have_mmx_intrinsics = yes)

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

	dnl GCC 4.2 when compiling with -msse will generate SSE instructions
	dnl on its own. This means anything compiled with -mss can only be
	dnl run after a runtime check for SSE. Unfortunately, since we still
	dnl need to support MMX-but-not-SSE (such as the OLPC), this means we
	dnl can only use SSE when compiling for x86-64 (where SSE is always
	dnl supported).

	have_sse_intrinsics=no
	AC_MSG_CHECKING(whether to use SSE intrinsics)
	xserver_save_CFLAGS=$CFLAGS
	CFLAGS="$CFLAGS -msse $MMX_CFLAGS"

	AC_COMPILE_IFELSE([
	#if defined(__GNUC__) && (__GNUC__ < 3 \|\| (__GNUC__ == 3 && __GNUC_MINOR__ < 4))
	#error "Need GCC >= 3.4 for SSE intrinsics"
	#endif
	#if !defined(__amd64__) && !defined(__x86_64__)
	#error "Need x86-64 for SSE"
	#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_sse_intrinsics=yes)
	CFLAGS=$xserver_save_CFLAGS
	AC_MSG_RESULT($have_sse_intrinsics)

	if test $have_sse_intrinsics = yes ; then
	AC_DEFINE(USE_SSE, 1, [use SSE compiler intrinsics])
	MMX_CFLAGS="-msse $MMX_CFLAGS"
	fi

	AM_CONDITIONAL(USE_SSE, test $have_sse_intrinsics = yes)


	dnl ===========================================================================
	dnl Check for SSE2

	SSE_CFLAGS="-mmmx -msse2 -Winline"

	if test "x$GCC" = "xyes"; then
	SSE_CFLAGS="$SSE_CFLAGS --param inline-unit-growth=10000 --param large-function-growth=10000 --param max-inline-insns-single=6000"
	fi

	have_sse2_intrinsics=no
	AC_MSG_CHECKING(whether to use SSE2 intrinsics)
	xserver_save_CFLAGS=$CFLAGS
	CFLAGS="$CFLAGS -msse2 $SSE_CFLAGS"

	AC_COMPILE_IFELSE([
	#if defined(__GNUC__) && (__GNUC__ < 4 \|\| (__GNUC__ == 4 && __GNUC_MINOR__ < 2))
	#error "Need GCC >= 4.2 for SSE2 intrinsics"
	#endif
	#include <mmintrin.h>
	#include <xmmintrin.h>
	#include <emmintrin.h>
	int main () {
	__m128i a, b, c;
	c = _mm_xor_si128 (a, b);
	return 0;
	}], have_sse2_intrinsics=yes)
	CFLAGS=$xserver_save_CFLAGS

	AC_ARG_ENABLE(sse2,
	[AC_HELP_STRING([--disable-sse2],
	[disable SSE2 fast paths])],
	[disable_sse2=yes], [disable_sse2=no])

	if test $disable_sse2 = yes ; then
	have_sse2_intrinsics=disabled
	fi

	if test $have_sse2_intrinsics = yes ; then
	AC_DEFINE(USE_SSE2, 1, [use SSE2 compiler intrinsics])
	fi

	AC_MSG_RESULT($have_sse2_intrinsics)

	AM_CONDITIONAL(USE_SSE2, test $have_sse2_intrinsics = yes)

	dnl ========================================================
	AC_SUBST(MMX_CFLAGS)
	AC_SUBST(SSE_CFLAGS)

	dnl Check for VMX/Altivec
	if test -n "`$CC -v 2>&1 \| grep version \| grep Apple`"; then
	VMX_CFLAGS="-faltivec"
	else
	VMX_CFLAGS="-maltivec -mabi=altivec"
	fi

	have_vmx_intrinsics=no
	AC_MSG_CHECKING(whether to use VMX/Altivec intrinsics)
	xserver_save_CFLAGS=$CFLAGS
	CFLAGS="$CFLAGS $VMX_CFLAGS"
	AC_COMPILE_IFELSE([
	#if defined(__GNUC__) && (__GNUC__ < 3 \|\| (__GNUC__ == 3 && __GNUC_MINOR__ < 4))
	#error "Need GCC >= 3.4 for sane altivec support"
	#endif
	#include <altivec.h>
	int main () {
	vector unsigned int v = vec_splat_u32 (1);
	v = vec_sub (v, v);
	return 0;
	}], have_vmx_intrinsics=yes)
	CFLAGS=$xserver_save_CFLAGS

	AC_ARG_ENABLE(vmx,
	[AC_HELP_STRING([--disable-vmx],
	[disable VMX fast paths])],
	[disable_vmx=yes], [disable_vmx=no])

	if test $disable_vmx = yes ; then
	have_vmx_intrinsics=disabled
	fi

	if test $have_vmx_intrinsics = yes ; then
	AC_DEFINE(USE_VMX, 1, [use VMX compiler intrinsics])
	else
	VMX_CFLAGS=
	fi

	AC_MSG_RESULT($have_vmx_intrinsics)

	AC_SUBST(VMX_CFLAGS)

	AM_CONDITIONAL(USE_VMX, test $have_vmx_intrinsics = yes)

	AC_ARG_ENABLE(gtk,
	[AC_HELP_STRING([--disable-gtk],
	[disable tests using GTK+])],
	[disable_gtk=yes], [disable_gtk=no])

	if test $disable_gtk = no ; then
	PKG_CHECK_MODULES(GTK, [gtk+-2.0], [HAVE_GTK=yes], [HAVE_GTK=no])
	else
	HAVE_GTK=no
	fi

	AM_CONDITIONAL(HAVE_GTK, [test "x$HAVE_GTK" = xyes])

	AC_SUBST(GTK_CFLAGS)
	AC_SUBST(GTK_LIBS)
	AC_SUBST(DEP_CFLAGS)
	AC_SUBST(DEP_LIBS)

	AC_OUTPUT([pixman-1.pc
	Makefile
	pixman/Makefile
	pixman/pixman-version.h
	test/Makefile])