pixman git update 17 jan 2011

1 files changed, 797 insertions, 783 deletions

diff --git a/pixman/configure.ac b/pixman/configure.ac
index ac0d16158..6552f1270 100644
--- a/pixman/configure.ac
+++ b/pixman/configure.ac
@@ -1,783 +1,797 @@
-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 version in git has an odd MICRO version number

-#

-#   - Released versions both development and stable have an even MICRO 

-#     version number

-#

-#   - Released development versions have an odd MINOR number

-#

-#   - Released stable versions have an even MINOR number

-#

-#   - Versions that break ABI must have a new MAJOR number

-#

-#   - If you break the ABI, then at least this must be done:

-#

-#        - 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], 21)

-m4_define([pixman_micro], 3)

-

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

-

-AC_INIT(pixman, pixman_version, [pixman@lists.freedesktop.org], pixman)

-AM_INIT_AUTOMAKE([foreign dist-bzip2])

-

-# Suppress verbose compile lines

-m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

-

-AM_CONFIG_HEADER(config.h)

-

-AC_CANONICAL_HOST

-

-test_CFLAGS=${CFLAGS+set} # We may override autoconf default CFLAGS.

-

-AC_PROG_CC

-AM_PROG_AS

-AC_PROG_LIBTOOL

-AC_CHECK_FUNCS([getisax])

-AC_C_BIGENDIAN

-AC_C_INLINE

-

-dnl PIXMAN_LINK_WITH_ENV(env-setup, program, true-action, false-action)

-dnl

-dnl Compiles and links the given program in the environment setup by env-setup

-dnl and executes true-action on success and false-action on failure.

-AC_DEFUN([PIXMAN_LINK_WITH_ENV],[dnl

-	save_CFLAGS="$CFLAGS"

-	save_LDFLAGS="$LDFLAGS"

-	save_LIBS="$LIBS"

-	CFLAGS=""

-	LDFLAGS=""

-	LIBS=""

-	$1

-	AC_LINK_IFELSE(

-		[$2],

-		[pixman_cc_stderr=`test -f conftest.err && cat conftest.err`

-		 pixman_cc_flag=yes],

-		[pixman_cc_stderr=`test -f conftest.err && cat conftest.err`

-		 pixman_cc_flag=no])

-

-	if test "x$pixman_cc_stderr" != "x"; then

-		pixman_cc_flag=no

-	fi

-

-	if test "x$pixman_cc_flag" = "xyes"; then

-		ifelse([$3], , :, [$3])

-	else

-		ifelse([$4], , :, [$4])

-	fi

-	CFLAGS="$save_CFLAGS"

-	LDFLAGS="$save_LDFLAGS"

-	LIBS="$save_LIBS"

-])

-

-dnl Find a -Werror for catching warnings.

-WERROR=

-for w in -Werror -errwarn; do

-    if test "z$WERROR" = "z"; then

-        AC_MSG_CHECKING([whether the compiler supports $w])

-        PIXMAN_LINK_WITH_ENV(

-		[CFLAGS=$w],

-		[int main(int c, char **v) { (void)c; (void)v; return 0; }],

-		[WERROR=$w; yesno=yes], [yesno=no])

-	AC_MSG_RESULT($_yesno)

-    fi

-done

-

-dnl PIXMAN_CHECK_CFLAG(flag, [program])

-dnl  Adds flag to CFLAGS if the given program links without warnings or errors.

-AC_DEFUN([PIXMAN_CHECK_CFLAG], [dnl

-	AC_MSG_CHECKING([whether the compiler supports $1])

-	PIXMAN_LINK_WITH_ENV(

-		[CFLAGS="$WERROR $1"],

-		[$2

-		 int main(int c, char **v) { (void)c; (void)v; return 0; }

-		],

-		[_yesno=yes],

-		[_yesno=no])

-	if test "x$_yesno" = xyes; then

-	   CFLAGS="$CFLAGS $1"

-	fi

-	AC_MSG_RESULT($_yesno)

-])

-

-AC_CHECK_SIZEOF(long)

-

-# Checks for Sun Studio compilers

-AC_CHECK_DECL([__SUNPRO_C], [SUNCC="yes"], [SUNCC="no"])

-AC_CHECK_DECL([__amd64], [AMD64_ABI="yes"], [AMD64_ABI="no"])

-

-# Default CFLAGS to -O -g rather than just the -g from AC_PROG_CC

-# if we're using Sun Studio and neither the user nor a config.site

-# has set CFLAGS.

-if test $SUNCC = yes &&			\

-   test "$test_CFLAGS" == "" &&		\

-   test "$CFLAGS" = "-g"

-then

-  CFLAGS="-O -g"

-fi

-

-# 

-# 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

-

-PIXMAN_CHECK_CFLAG([-Wall])

-PIXMAN_CHECK_CFLAG([-fno-strict-aliasing])

-

-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 OpenMP for the test suite?

-dnl

-

-# Check for OpenMP support (only supported by autoconf >=2.62)

-OPENMP_CFLAGS=

-m4_ifdef([AC_OPENMP], [AC_OPENMP])

-

-m4_define([openmp_test_program],[dnl

-#include <stdio.h>

-

-extern unsigned int lcg_seed;

-#pragma omp threadprivate(lcg_seed)

-unsigned int lcg_seed;

-

-unsigned function(unsigned a, unsigned b)

-{

-	lcg_seed ^= b;

-	return ((a + b) ^ a ) + lcg_seed;

-}

-

-int main(int argc, char **argv)

-{

-	int i;

-	int n1 = 0, n2 = argc;

-	unsigned checksum = 0;

-	int verbose = argv != NULL;

-	unsigned (*test_function)(unsigned, unsigned);

-	test_function = function;

-    #pragma omp parallel for reduction(+:checksum) default(none) \

-					shared(n1, n2, test_function, verbose)

-	for (i = n1; i < n2; i++)

-    	{

-		unsigned crc = test_function (i, 0);

-		if (verbose)

-			printf ("%d: %08X\n", i, crc);

-		checksum += crc;

-	}

-	printf("%u\n", checksum);

-	return 0;

-}

-])

-

-PIXMAN_LINK_WITH_ENV(

-	[CFLAGS="$OPENMP_CFLAGS" LDFLAGS="$OPENMP_CFLAGS"],

-	[openmp_test_program],

-	[have_openmp=yes],

-	[have_openmp=no])

-if test "x$have_openmp" = "xyes"; then

-   AC_DEFINE(USE_OPENMP, 1, [use OpenMP in the test suite])

-else

-   OPENMP_CFLAGS=""

-fi

-AC_SUBST(OPENMP_CFLAGS)

-

-dnl =========================================================================

-dnl -fvisibility stuff

-

-PIXMAN_CHECK_CFLAG([-fvisibility=hidden], [dnl

-#if defined(__GNUC__) && (__GNUC__ >= 4)

-#ifdef _WIN32

-#error Have -fvisibility but it is ignored and generates a warning

-#endif

-#else

-error Need GCC 4.0 for visibility

-#endif

-])

-

-PIXMAN_CHECK_CFLAG([-xldscope=hidden], [dnl

-#if defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)

-#else

-error Need Sun Studio 8 for visibility

-#endif

-])

-

-dnl ===========================================================================

-dnl Check for MMX

-

-if test "x$MMX_CFLAGS" = "x" ; then

-   if test "x$SUNCC" = "xyes"; then

-      # Sun Studio doesn't have an -xarch=mmx flag, so we have to use sse

-      # but if we're building 64-bit, mmx & sse support is on by default and

-      # -xarch=sse throws an error instead

-      if test "$AMD64_ABI" = "no" ; then

-         MMX_CFLAGS="-xarch=sse"

-      fi

-   else

-      MMX_CFLAGS="-mmmx -Winline"

-   fi

-fi

-

-have_mmx_intrinsics=no

-AC_MSG_CHECKING(whether to use MMX intrinsics)

-xserver_save_CFLAGS=$CFLAGS

-CFLAGS="$MMX_CFLAGS $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])],

-   [enable_mmx=$enableval], [enable_mmx=auto])

-

-if test $enable_mmx = no ; 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)

-if test $enable_mmx = yes && test $have_mmx_intrinsics = no ; then

-   AC_MSG_ERROR([MMX intrinsics not detected])

-fi

-

-AM_CONDITIONAL(USE_MMX, test $have_mmx_intrinsics = yes)

-

-dnl ===========================================================================

-dnl Check for SSE2

-

-if test "x$SSE2_CFLAGS" = "x" ; then

-   if test "x$SUNCC" = "xyes"; then

-      # SSE2 is enabled by default in the Sun Studio 64-bit environment

-      if test "$AMD64_ABI" = "no" ; then

-         SSE2_CFLAGS="-xarch=sse2"

-      fi

-   else

-      SSE2_CFLAGS="-mmmx -msse2 -Winline"

-   fi

-fi

-

-have_sse2_intrinsics=no

-AC_MSG_CHECKING(whether to use SSE2 intrinsics)

-xserver_save_CFLAGS=$CFLAGS

-CFLAGS="$SSE2_CFLAGS $CFLAGS"

-

-AC_COMPILE_IFELSE([

-#if defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 2))

-#   if !defined(__amd64__) && !defined(__x86_64__)

-#      error "Need GCC >= 4.2 for SSE2 intrinsics on x86"

-#   endif

-#endif

-#include <mmintrin.h>

-#include <xmmintrin.h>

-#include <emmintrin.h>

-int main () {

-    __m128i a = _mm_set1_epi32 (0), b = _mm_set1_epi32 (0), 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])],

-   [enable_sse2=$enableval], [enable_sse2=auto])

-

-if test $enable_sse2 = no ; 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)

-if test $enable_sse2 = yes && test $have_sse2_intrinsics = no ; then

-   AC_MSG_ERROR([SSE2 intrinsics not detected])

-fi

-

-AM_CONDITIONAL(USE_SSE2, test $have_sse2_intrinsics = yes)

-

-dnl ===========================================================================

-dnl Other special flags needed when building code using MMX or SSE instructions

-case $host_os in

-   solaris*)

-      # When building 32-bit binaries, apply a mapfile to ensure that the

-      # binaries aren't flagged as only able to run on MMX+SSE capable CPUs

-      # since they check at runtime before using those instructions.

-      # Not all linkers grok the mapfile format so we check for that first.

-      if test "$AMD64_ABI" = "no" ; then

-	 use_hwcap_mapfile=no

-	 AC_MSG_CHECKING(whether to use a hardware capability map file)

-	 hwcap_save_LDFLAGS="$LDFLAGS"

-	 HWCAP_LDFLAGS='-Wl,-M,$(srcdir)/solaris-hwcap.mapfile'

-	 LDFLAGS="$LDFLAGS -Wl,-M,pixman/solaris-hwcap.mapfile"

-	 AC_LINK_IFELSE([int main() { return 0; }],

-			use_hwcap_mapfile=yes,

-			HWCAP_LDFLAGS="")

-	 LDFLAGS="$hwcap_save_LDFLAGS"

-	 AC_MSG_RESULT($use_hwcap_mapfile)

-      fi

-      if test "x$MMX_LDFLAGS" = "x" ; then

-         MMX_LDFLAGS="$HWCAP_LDFLAGS"

-      fi

-      if test "x$SSE2_LDFLAGS" = "x" ; then

-	 SSE2_LDFLAGS="$HWCAP_LDFLAGS"

-      fi

-      ;;

-esac

-

-AC_SUBST(MMX_CFLAGS)

-AC_SUBST(MMX_LDFLAGS)

-AC_SUBST(SSE2_CFLAGS)

-AC_SUBST(SSE2_LDFLAGS)

-

-dnl ===========================================================================

-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="$VMX_CFLAGS $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])],

-   [enable_vmx=$enableval], [enable_vmx=auto])

-

-if test $enable_vmx = no ; 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)

-if test $enable_vmx = yes && test $have_vmx_intrinsics = no ; then

-   AC_MSG_ERROR([VMX intrinsics not detected])

-fi

-

-AC_SUBST(VMX_CFLAGS)

-

-AM_CONDITIONAL(USE_VMX, test $have_vmx_intrinsics = yes)

-

-dnl ==========================================================================

-dnl Check if assembler is gas compatible and supports ARM SIMD instructions

-have_arm_simd=no

-AC_MSG_CHECKING(whether to use ARM SIMD assembler)

-xserver_save_CFLAGS=$CFLAGS

-CFLAGS="-x assembler-with-cpp $CFLAGS"

-AC_COMPILE_IFELSE([[

-.text

-.arch armv6

-.object_arch armv4

-.arm

-.altmacro

-#ifndef __ARM_EABI__

-#error EABI is required (to be sure that calling conventions are compatible)

-#endif

-pld [r0]

-uqadd8 r0, r0, r0]], have_arm_simd=yes)

-CFLAGS=$xserver_save_CFLAGS

-

-AC_ARG_ENABLE(arm-simd,

-   [AC_HELP_STRING([--disable-arm-simd],

-                   [disable ARM SIMD fast paths])],

-   [enable_arm_simd=$enableval], [enable_arm_simd=auto])

-

-if test $enable_arm_simd = no ; then

-   have_arm_simd=disabled

-fi

-

-if test $have_arm_simd = yes ; then

-   AC_DEFINE(USE_ARM_SIMD, 1, [use ARM SIMD assembly optimizations])

-fi

-

-AM_CONDITIONAL(USE_ARM_SIMD, test $have_arm_simd = yes)

-

-AC_MSG_RESULT($have_arm_simd)

-if test $enable_arm_simd = yes && test $have_arm_simd = no ; then

-   AC_MSG_ERROR([ARM SIMD intrinsics not detected])

-fi

-

-dnl ==========================================================================

-dnl Check if assembler is gas compatible and supports NEON instructions

-have_arm_neon=no

-AC_MSG_CHECKING(whether to use ARM NEON assembler)

-xserver_save_CFLAGS=$CFLAGS

-CFLAGS="-x assembler-with-cpp $CFLAGS"

-AC_COMPILE_IFELSE([[

-.text

-.fpu neon

-.arch armv7a

-.object_arch armv4

-.eabi_attribute 10, 0

-.arm

-.altmacro

-#ifndef __ARM_EABI__

-#error EABI is required (to be sure that calling conventions are compatible)

-#endif

-pld [r0]

-vmovn.u16 d0, q0]], have_arm_neon=yes)

-CFLAGS=$xserver_save_CFLAGS

-

-AC_ARG_ENABLE(arm-neon,

-   [AC_HELP_STRING([--disable-arm-neon],

-                   [disable ARM NEON fast paths])],

-   [enable_arm_neon=$enableval], [enable_arm_neon=auto])

-

-if test $enable_arm_neon = no ; then

-   have_arm_neon=disabled

-fi

-

-if test $have_arm_neon = yes ; then

-   AC_DEFINE(USE_ARM_NEON, 1, [use ARM NEON assembly optimizations])

-fi

-

-AM_CONDITIONAL(USE_ARM_NEON, test $have_arm_neon = yes)

-

-AC_MSG_RESULT($have_arm_neon)

-if test $enable_arm_neon = yes && test $have_arm_neon = no ; then

-   AC_MSG_ERROR([ARM NEON intrinsics not detected])

-fi

-

-dnl =========================================================================================

-dnl Check for GNU-style inline assembly support

-

-have_gcc_inline_asm=no

-AC_MSG_CHECKING(whether to use GNU-style inline assembler)

-AC_COMPILE_IFELSE([

-int main () {

-    /* Most modern architectures have a NOP instruction, so this is a fairly generic test. */

-	asm volatile ( "\tnop\n" : : : "cc", "memory" );

-    return 0;

-}], have_gcc_inline_asm=yes)

-

-AC_ARG_ENABLE(gcc-inline-asm,

-   [AC_HELP_STRING([--disable-gcc-inline-asm],

-                   [disable GNU-style inline assembler])],

-   [enable_gcc_inline_asm=$enableval], [enable_gcc_inline_asm=auto])

-

-if test $enable_gcc_inline_asm = no ; then

-   have_gcc_inline_asm=disabled

-fi

-

-if test $have_gcc_inline_asm = yes ; then

-   AC_DEFINE(USE_GCC_INLINE_ASM, 1, [use GNU-style inline assembler])

-fi

-

-AC_MSG_RESULT($have_gcc_inline_asm)

-if test $enable_gcc_inline_asm = yes && test $have_gcc_inline_asm = no ; then

-   AC_MSG_ERROR([GNU-style inline assembler not detected])

-fi

-

-AM_CONDITIONAL(USE_GCC_INLINE_ASM, test $have_gcc_inline_asm = yes)

-

-dnl ==============================================

-dnl Timers

-

-AC_ARG_ENABLE(timers,

-   [AC_HELP_STRING([--enable-timers],

-		   [enable TIMER_BEGIN and TIMER_END macros [default=no]])],

-   [enable_timers=$enableval], [enable_timers=no])

-

-if test $enable_timers = yes ; then 

-   AC_DEFINE(PIXMAN_TIMERS, 1, [enable TIMER_BEGIN/TIMER_END macros])

-fi

-AC_SUBST(PIXMAN_TIMERS)

-

-dnl ===================================

-dnl GTK+

-

-AC_ARG_ENABLE(gtk,

-   [AC_HELP_STRING([--enable-gtk],

-                   [enable tests using GTK+ [default=auto]])],

-   [enable_gtk=$enableval], [enable_gtk=auto])

-

-PKG_PROG_PKG_CONFIG

-

-if test $enable_gtk = yes ; then

-   AC_CHECK_LIB([pixman-1], [pixman_version_string])

-   PKG_CHECK_MODULES(GTK, [gtk+-2.0 pixman-1])

-fi

-

-if test $enable_gtk = auto ; then

-   AC_CHECK_LIB([pixman-1], [pixman_version_string], [enable_gtk=auto], [enable_gtk=no])

-fi

-

-if test $enable_gtk = auto ; then

-   PKG_CHECK_MODULES(GTK, [gtk+-2.0 pixman-1], [enable_gtk=yes], [enable_gtk=no])

-fi

-

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

-

-AC_SUBST(GTK_CFLAGS)

-AC_SUBST(GTK_LIBS)

-AC_SUBST(DEP_CFLAGS)

-AC_SUBST(DEP_LIBS)

-

-dnl =====================================

-dnl posix_memalign, sigaction, alarm, gettimeofday

-

-AC_CHECK_FUNC(posix_memalign, have_posix_memalign=yes, have_posix_memalign=no)

-if test x$have_posix_memalign = xyes; then

-   AC_DEFINE(HAVE_POSIX_MEMALIGN, 1, [Whether we have posix_memalign()])

-fi

-

-AC_CHECK_FUNC(sigaction, have_sigaction=yes, have_sigaction=no)

-if test x$have_sigaction = xyes; then

-   AC_DEFINE(HAVE_SIGACTION, 1, [Whether we have sigaction()])

-fi

-

-AC_CHECK_FUNC(alarm, have_alarm=yes, have_alarm=no)

-if test x$have_alarm = xyes; then

-   AC_DEFINE(HAVE_ALARM, 1, [Whether we have alarm()])

-fi

-

-AC_CHECK_HEADER([sys/mman.h],

-   [AC_DEFINE(HAVE_SYS_MMAN_H, [1], [Define to 1 if we have <sys/mman.h>])])

-

-AC_CHECK_FUNC(mprotect, have_mprotect=yes, have_mprotect=no)

-if test x$have_mprotect = xyes; then

-   AC_DEFINE(HAVE_MPROTECT, 1, [Whether we have mprotect()])

-fi

-

-AC_CHECK_FUNC(getpagesize, have_getpagesize=yes, have_getpagesize=no)

-if test x$have_getpagesize = xyes; then

-   AC_DEFINE(HAVE_GETPAGESIZE, 1, [Whether we have getpagesize()])

-fi

-

-AC_CHECK_HEADER([fenv.h],

-   [AC_DEFINE(HAVE_FENV_H, [1], [Define to 1 if we have <fenv.h>])])

-

-AC_CHECK_LIB(m, feenableexcept, have_feenableexcept=yes, have_feenableexcept=no)

-if test x$have_feenableexcept = xyes; then

-   AC_DEFINE(HAVE_FEENABLEEXCEPT, 1, [Whether we have feenableexcept()])

-fi

-

-AC_CHECK_FUNC(gettimeofday, have_gettimeofday=yes, have_gettimeofday=no)

-AC_CHECK_HEADER(sys/time.h, have_sys_time_h=yes, have_sys_time_h=no)

-if test x$have_gettimeofday = xyes && test x$have_sys_time_h = xyes; then

-   AC_DEFINE(HAVE_GETTIMEOFDAY, 1, [Whether we have gettimeofday()])

-fi

-

-dnl =====================================

-dnl Thread local storage

-

-support_for__thread=no

-

-AC_MSG_CHECKING(for __thread)

-AC_LINK_IFELSE([

-#if defined(__MINGW32__) && !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5))

-#error This MinGW version has broken __thread support

-#endif

-#ifdef __OpenBSD__

-#error OpenBSD has broken __thread support

-#endif

-static __thread int x ;

-int main () { x = 123; return x; }

-], support_for__thread=yes)

-

-if test $support_for__thread = yes; then 

-   AC_DEFINE([TOOLCHAIN_SUPPORTS__THREAD],[],[Whether the tool chain supports __thread])

-fi

-

-AC_MSG_RESULT($support_for__thread)

-

-dnl

-dnl posix tls

-dnl

-

-m4_define([pthread_test_program],[dnl

-#include <stdlib.h>

-#include <pthread.h>

-

-static pthread_once_t once_control = PTHREAD_ONCE_INIT;

-static pthread_key_t key;

-

-static void

-make_key (void)

-{

-    pthread_key_create (&key, NULL);

-}

-

-int

-main ()

-{

-    void *value = NULL;

-

-    if (pthread_once (&once_control, make_key) != 0)

-    {

-	value = NULL;

-    }

-    else

-    {

-	value = pthread_getspecific (key);

-	if (!value)

-	{

-	    value = malloc (100);

-	    pthread_setspecific (key, value);

-	}

-    }

-    return 0;

-}

-])

-

-AC_DEFUN([PIXMAN_CHECK_PTHREAD],[dnl

-    if test "z$support_for_pthread_setspecific" != "zyes"; then

-	PIXMAN_LINK_WITH_ENV(

-		[$1], [pthread_test_program],

-		[PTHREAD_CFLAGS="$CFLAGS"

-		 PTHREAD_LIBS="$LIBS"

-		 PTHREAD_LDFLAGS="$LDFLAGS"

-		 support_for_pthread_setspecific=yes])

-    fi

-])

-

-if test $support_for__thread = no; then

-    support_for_pthread_setspecific=no

-

-    AC_MSG_CHECKING(for pthread_setspecific)

-

-    PIXMAN_CHECK_PTHREAD([CFLAGS="-D_REENTRANT"; LIBS="-lpthread"])

-    PIXMAN_CHECK_PTHREAD([CFLAGS="-pthread"; LDFLAGS="-pthread"])

-    PIXMAN_CHECK_PTHREAD([CFLAGS="-D_REENTRANT"; LDFLAGS="-lroot"])

-    

-    if test $support_for_pthread_setspecific = yes; then

-	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"

-	AC_DEFINE([HAVE_PTHREAD_SETSPECIFIC], [], [Whether pthread_setspecific() is supported])

-    fi

-

-    AC_MSG_RESULT($support_for_pthread_setspecific);

-fi

-

-AC_SUBST(TOOLCHAIN_SUPPORTS__THREAD)

-AC_SUBST(HAVE_PTHREAD_SETSPECIFIC)

-AC_SUBST(PTHREAD_LDFLAGS)

-AC_SUBST(PTHREAD_LIBS)

-

-dnl =====================================

-dnl __attribute__((constructor))

-

-support_for_attribute_constructor=no

-

-AC_MSG_CHECKING(for __attribute__((constructor)))

-AC_LINK_IFELSE([

-#if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7))

-/* attribute 'constructor' is supported since gcc 2.7, but some compilers

- * may only pretend to be gcc, so let's try to actually use it

- */

-static int x = 1;

-static void __attribute__((constructor)) constructor_function () { x = 0; }

-int main (void) { return x; }

-#else

-#error not gcc or gcc version is older than 2.7

-#endif

-], support_for_attribute_constructor=yes)

-

-if test x$support_for_attribute_constructor = xyes; then

-   AC_DEFINE([TOOLCHAIN_SUPPORTS_ATTRIBUTE_CONSTRUCTOR],

-             [],[Whether the tool chain supports __attribute__((constructor))])

-fi

-

-AC_MSG_RESULT($support_for_attribute_constructor)

-AC_SUBST(TOOLCHAIN_SUPPORTS_ATTRIBUTE_CONSTRUCTOR)

-

-AC_OUTPUT([pixman-1.pc

-           pixman-1-uninstalled.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 version in git has an odd MICRO version number
+#
+#   - Released versions both development and stable have an even MICRO 
+#     version number
+#
+#   - Released development versions have an odd MINOR number
+#
+#   - Released stable versions have an even MINOR number
+#
+#   - Versions that break ABI must have a new MAJOR number
+#
+#   - If you break the ABI, then at least this must be done:
+#
+#        - 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], 21)
+m4_define([pixman_micro], 3)
+
+m4_define([pixman_version],[pixman_major.pixman_minor.pixman_micro])
+
+AC_INIT(pixman, pixman_version, [pixman@lists.freedesktop.org], pixman)
+AM_INIT_AUTOMAKE([foreign dist-bzip2])
+
+# Suppress verbose compile lines
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
+
+AM_CONFIG_HEADER(config.h)
+
+AC_CANONICAL_HOST
+
+test_CFLAGS=${CFLAGS+set} # We may override autoconf default CFLAGS.
+
+AC_PROG_CC
+AM_PROG_AS
+AC_PROG_LIBTOOL
+AC_CHECK_FUNCS([getisax])
+AC_C_BIGENDIAN
+AC_C_INLINE
+
+dnl PIXMAN_LINK_WITH_ENV(env-setup, program, true-action, false-action)
+dnl
+dnl Compiles and links the given program in the environment setup by env-setup
+dnl and executes true-action on success and false-action on failure.
+AC_DEFUN([PIXMAN_LINK_WITH_ENV],[dnl
+	save_CFLAGS="$CFLAGS"
+	save_LDFLAGS="$LDFLAGS"
+	save_LIBS="$LIBS"
+	CFLAGS=""
+	LDFLAGS=""
+	LIBS=""
+	$1
+	AC_LINK_IFELSE(
+		[$2],
+		[pixman_cc_stderr=`test -f conftest.err && cat conftest.err`
+		 pixman_cc_flag=yes],
+		[pixman_cc_stderr=`test -f conftest.err && cat conftest.err`
+		 pixman_cc_flag=no])
+
+	if test "x$pixman_cc_stderr" != "x"; then
+		pixman_cc_flag=no
+	fi
+
+	if test "x$pixman_cc_flag" = "xyes"; then
+		ifelse([$3], , :, [$3])
+	else
+		ifelse([$4], , :, [$4])
+	fi
+	CFLAGS="$save_CFLAGS"
+	LDFLAGS="$save_LDFLAGS"
+	LIBS="$save_LIBS"
+])
+
+dnl Find a -Werror for catching warnings.
+WERROR=
+for w in -Werror -errwarn; do
+    if test "z$WERROR" = "z"; then
+        AC_MSG_CHECKING([whether the compiler supports $w])
+        PIXMAN_LINK_WITH_ENV(
+		[CFLAGS=$w],
+		[int main(int c, char **v) { (void)c; (void)v; return 0; }],
+		[WERROR=$w; yesno=yes], [yesno=no])
+	AC_MSG_RESULT($_yesno)
+    fi
+done
+
+dnl PIXMAN_CHECK_CFLAG(flag, [program])
+dnl  Adds flag to CFLAGS if the given program links without warnings or errors.
+AC_DEFUN([PIXMAN_CHECK_CFLAG], [dnl
+	AC_MSG_CHECKING([whether the compiler supports $1])
+	PIXMAN_LINK_WITH_ENV(
+		[CFLAGS="$WERROR $1"],
+		[$2
+		 int main(int c, char **v) { (void)c; (void)v; return 0; }
+		],
+		[_yesno=yes],
+		[_yesno=no])
+	if test "x$_yesno" = xyes; then
+	   CFLAGS="$CFLAGS $1"
+	fi
+	AC_MSG_RESULT($_yesno)
+])
+
+AC_CHECK_SIZEOF(long)
+
+# Checks for Sun Studio compilers
+AC_CHECK_DECL([__SUNPRO_C], [SUNCC="yes"], [SUNCC="no"])
+AC_CHECK_DECL([__amd64], [AMD64_ABI="yes"], [AMD64_ABI="no"])
+
+# Default CFLAGS to -O -g rather than just the -g from AC_PROG_CC
+# if we're using Sun Studio and neither the user nor a config.site
+# has set CFLAGS.
+if test $SUNCC = yes &&			\
+   test "$test_CFLAGS" == "" &&		\
+   test "$CFLAGS" = "-g"
+then
+  CFLAGS="-O -g"
+fi
+
+# 
+# We ignore pixman_major in the version here because the major version should
+# always be encoded in the actual library name. Ie., the soname is:
+#
+#      pixman-$(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
+
+PIXMAN_CHECK_CFLAG([-Wall])
+PIXMAN_CHECK_CFLAG([-fno-strict-aliasing])
+
+AC_PATH_PROG(PERL, perl, no)
+if test "x$PERL" = xno; then
+    AC_MSG_ERROR([Perl is required to build pixman.])
+fi
+AC_SUBST(PERL)
+
+dnl =========================================================================
+dnl OpenMP for the test suite?
+dnl
+
+# Check for OpenMP support (only supported by autoconf >=2.62)
+OPENMP_CFLAGS=
+m4_ifdef([AC_OPENMP], [AC_OPENMP])
+
+m4_define([openmp_test_program],[dnl
+#include <stdio.h>
+
+extern unsigned int lcg_seed;
+#pragma omp threadprivate(lcg_seed)
+unsigned int lcg_seed;
+
+unsigned function(unsigned a, unsigned b)
+{
+	lcg_seed ^= b;
+	return ((a + b) ^ a ) + lcg_seed;
+}
+
+int main(int argc, char **argv)
+{
+	int i;
+	int n1 = 0, n2 = argc;
+	unsigned checksum = 0;
+	int verbose = argv != NULL;
+	unsigned (*test_function)(unsigned, unsigned);
+	test_function = function;
+    #pragma omp parallel for reduction(+:checksum) default(none) \
+					shared(n1, n2, test_function, verbose)
+	for (i = n1; i < n2; i++)
+    	{
+		unsigned crc = test_function (i, 0);
+		if (verbose)
+			printf ("%d: %08X\n", i, crc);
+		checksum += crc;
+	}
+	printf("%u\n", checksum);
+	return 0;
+}
+])
+
+PIXMAN_LINK_WITH_ENV(
+	[CFLAGS="$OPENMP_CFLAGS" LDFLAGS="$OPENMP_CFLAGS"],
+	[openmp_test_program],
+	[have_openmp=yes],
+	[have_openmp=no])
+if test "x$have_openmp" = "xyes"; then
+   AC_DEFINE(USE_OPENMP, 1, [use OpenMP in the test suite])
+else
+   OPENMP_CFLAGS=""
+fi
+AC_SUBST(OPENMP_CFLAGS)
+
+dnl =========================================================================
+dnl -fvisibility stuff
+
+PIXMAN_CHECK_CFLAG([-fvisibility=hidden], [dnl
+#if defined(__GNUC__) && (__GNUC__ >= 4)
+#ifdef _WIN32
+#error Have -fvisibility but it is ignored and generates a warning
+#endif
+#else
+error Need GCC 4.0 for visibility
+#endif
+])
+
+PIXMAN_CHECK_CFLAG([-xldscope=hidden], [dnl
+#if defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
+#else
+error Need Sun Studio 8 for visibility
+#endif
+])
+
+dnl ===========================================================================
+dnl Check for MMX
+
+if test "x$MMX_CFLAGS" = "x" ; then
+   if test "x$SUNCC" = "xyes"; then
+      # Sun Studio doesn't have an -xarch=mmx flag, so we have to use sse
+      # but if we're building 64-bit, mmx & sse support is on by default and
+      # -xarch=sse throws an error instead
+      if test "$AMD64_ABI" = "no" ; then
+         MMX_CFLAGS="-xarch=sse"
+      fi
+   else
+      MMX_CFLAGS="-mmmx -Winline"
+   fi
+fi
+
+have_mmx_intrinsics=no
+AC_MSG_CHECKING(whether to use MMX intrinsics)
+xserver_save_CFLAGS=$CFLAGS
+CFLAGS="$MMX_CFLAGS $CFLAGS"
+AC_COMPILE_IFELSE([
+#if defined(__GNUC__) && (__GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4))
+error "Need GCC >= 3.4 for MMX intrinsics"
+#endif
+#include <mmintrin.h>
+int main () {
+    __m64 v = _mm_cvtsi32_si64 (1);
+    return _mm_cvtsi64_si32 (v);
+}], have_mmx_intrinsics=yes)
+CFLAGS=$xserver_save_CFLAGS
+
+AC_ARG_ENABLE(mmx,
+   [AC_HELP_STRING([--disable-mmx],
+                   [disable MMX fast paths])],
+   [enable_mmx=$enableval], [enable_mmx=auto])
+
+if test $enable_mmx = no ; 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)
+if test $enable_mmx = yes && test $have_mmx_intrinsics = no ; then
+   AC_MSG_ERROR([MMX intrinsics not detected])
+fi
+
+AM_CONDITIONAL(USE_MMX, test $have_mmx_intrinsics = yes)
+
+dnl ===========================================================================
+dnl Check for SSE2
+
+if test "x$SSE2_CFLAGS" = "x" ; then
+   if test "x$SUNCC" = "xyes"; then
+      # SSE2 is enabled by default in the Sun Studio 64-bit environment
+      if test "$AMD64_ABI" = "no" ; then
+         SSE2_CFLAGS="-xarch=sse2"
+      fi
+   else
+      SSE2_CFLAGS="-mmmx -msse2 -Winline"
+   fi
+fi
+
+have_sse2_intrinsics=no
+AC_MSG_CHECKING(whether to use SSE2 intrinsics)
+xserver_save_CFLAGS=$CFLAGS
+CFLAGS="$SSE2_CFLAGS $CFLAGS"
+
+AC_COMPILE_IFELSE([
+#if defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 2))
+#   if !defined(__amd64__) && !defined(__x86_64__)
+#      error "Need GCC >= 4.2 for SSE2 intrinsics on x86"
+#   endif
+#endif
+#include <mmintrin.h>
+#include <xmmintrin.h>
+#include <emmintrin.h>
+int main () {
+    __m128i a = _mm_set1_epi32 (0), b = _mm_set1_epi32 (0), c;
+	c = _mm_xor_si128 (a, b);
+    return 0;
+}], have_sse2_intrinsics=yes)
+CFLAGS=$xserver_save_CFLAGS
+
+AC_ARG_ENABLE(sse2,
+   [AC_HELP_STRING([--disable-sse2],
+                   [disable SSE2 fast paths])],
+   [enable_sse2=$enableval], [enable_sse2=auto])
+
+if test $enable_sse2 = no ; 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)
+if test $enable_sse2 = yes && test $have_sse2_intrinsics = no ; then
+   AC_MSG_ERROR([SSE2 intrinsics not detected])
+fi
+
+AM_CONDITIONAL(USE_SSE2, test $have_sse2_intrinsics = yes)
+
+dnl ===========================================================================
+dnl Other special flags needed when building code using MMX or SSE instructions
+case $host_os in
+   solaris*)
+      # When building 32-bit binaries, apply a mapfile to ensure that the
+      # binaries aren't flagged as only able to run on MMX+SSE capable CPUs
+      # since they check at runtime before using those instructions.
+      # Not all linkers grok the mapfile format so we check for that first.
+      if test "$AMD64_ABI" = "no" ; then
+	 use_hwcap_mapfile=no
+	 AC_MSG_CHECKING(whether to use a hardware capability map file)
+	 hwcap_save_LDFLAGS="$LDFLAGS"
+	 HWCAP_LDFLAGS='-Wl,-M,$(srcdir)/solaris-hwcap.mapfile'
+	 LDFLAGS="$LDFLAGS -Wl,-M,pixman/solaris-hwcap.mapfile"
+	 AC_LINK_IFELSE([int main() { return 0; }],
+			use_hwcap_mapfile=yes,
+			HWCAP_LDFLAGS="")
+	 LDFLAGS="$hwcap_save_LDFLAGS"
+	 AC_MSG_RESULT($use_hwcap_mapfile)
+      fi
+      if test "x$MMX_LDFLAGS" = "x" ; then
+         MMX_LDFLAGS="$HWCAP_LDFLAGS"
+      fi
+      if test "x$SSE2_LDFLAGS" = "x" ; then
+	 SSE2_LDFLAGS="$HWCAP_LDFLAGS"
+      fi
+      ;;
+esac
+
+AC_SUBST(MMX_CFLAGS)
+AC_SUBST(MMX_LDFLAGS)
+AC_SUBST(SSE2_CFLAGS)
+AC_SUBST(SSE2_LDFLAGS)
+
+dnl ===========================================================================
+dnl Check for VMX/Altivec
+if test -n "`$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=$CFLAGS
+CFLAGS="$VMX_CFLAGS $CFLAGS"
+AC_COMPILE_IFELSE([
+#if defined(__GNUC__) && (__GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4))
+error "Need GCC >= 3.4 for sane altivec support"
+#endif
+#include <altivec.h>
+int main () {
+    vector unsigned int v = vec_splat_u32 (1);
+    v = vec_sub (v, v);
+    return 0;
+}], have_vmx_intrinsics=yes)
+CFLAGS=$xserver_save_CFLAGS
+
+AC_ARG_ENABLE(vmx,
+   [AC_HELP_STRING([--disable-vmx],
+                   [disable VMX fast paths])],
+   [enable_vmx=$enableval], [enable_vmx=auto])
+
+if test $enable_vmx = no ; 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)
+if test $enable_vmx = yes && test $have_vmx_intrinsics = no ; then
+   AC_MSG_ERROR([VMX intrinsics not detected])
+fi
+
+AC_SUBST(VMX_CFLAGS)
+
+AM_CONDITIONAL(USE_VMX, test $have_vmx_intrinsics = yes)
+
+dnl ==========================================================================
+dnl Check if assembler is gas compatible and supports ARM SIMD instructions
+have_arm_simd=no
+AC_MSG_CHECKING(whether to use ARM SIMD assembler)
+xserver_save_CFLAGS=$CFLAGS
+CFLAGS="-x assembler-with-cpp $CFLAGS"
+AC_COMPILE_IFELSE([[
+.text
+.arch armv6
+.object_arch armv4
+.arm
+.altmacro
+#ifndef __ARM_EABI__
+#error EABI is required (to be sure that calling conventions are compatible)
+#endif
+pld [r0]
+uqadd8 r0, r0, r0]], have_arm_simd=yes)
+CFLAGS=$xserver_save_CFLAGS
+
+AC_ARG_ENABLE(arm-simd,
+   [AC_HELP_STRING([--disable-arm-simd],
+                   [disable ARM SIMD fast paths])],
+   [enable_arm_simd=$enableval], [enable_arm_simd=auto])
+
+if test $enable_arm_simd = no ; then
+   have_arm_simd=disabled
+fi
+
+if test $have_arm_simd = yes ; then
+   AC_DEFINE(USE_ARM_SIMD, 1, [use ARM SIMD assembly optimizations])
+fi
+
+AM_CONDITIONAL(USE_ARM_SIMD, test $have_arm_simd = yes)
+
+AC_MSG_RESULT($have_arm_simd)
+if test $enable_arm_simd = yes && test $have_arm_simd = no ; then
+   AC_MSG_ERROR([ARM SIMD intrinsics not detected])
+fi
+
+dnl ==========================================================================
+dnl Check if assembler is gas compatible and supports NEON instructions
+have_arm_neon=no
+AC_MSG_CHECKING(whether to use ARM NEON assembler)
+xserver_save_CFLAGS=$CFLAGS
+CFLAGS="-x assembler-with-cpp $CFLAGS"
+AC_COMPILE_IFELSE([[
+.text
+.fpu neon
+.arch armv7a
+.object_arch armv4
+.eabi_attribute 10, 0
+.arm
+.altmacro
+#ifndef __ARM_EABI__
+#error EABI is required (to be sure that calling conventions are compatible)
+#endif
+pld [r0]
+vmovn.u16 d0, q0]], have_arm_neon=yes)
+CFLAGS=$xserver_save_CFLAGS
+
+AC_ARG_ENABLE(arm-neon,
+   [AC_HELP_STRING([--disable-arm-neon],
+                   [disable ARM NEON fast paths])],
+   [enable_arm_neon=$enableval], [enable_arm_neon=auto])
+
+if test $enable_arm_neon = no ; then
+   have_arm_neon=disabled
+fi
+
+if test $have_arm_neon = yes ; then
+   AC_DEFINE(USE_ARM_NEON, 1, [use ARM NEON assembly optimizations])
+fi
+
+AM_CONDITIONAL(USE_ARM_NEON, test $have_arm_neon = yes)
+
+AC_MSG_RESULT($have_arm_neon)
+if test $enable_arm_neon = yes && test $have_arm_neon = no ; then
+   AC_MSG_ERROR([ARM NEON intrinsics not detected])
+fi
+
+dnl =========================================================================================
+dnl Check for GNU-style inline assembly support
+
+have_gcc_inline_asm=no
+AC_MSG_CHECKING(whether to use GNU-style inline assembler)
+AC_COMPILE_IFELSE([
+int main () {
+    /* Most modern architectures have a NOP instruction, so this is a fairly generic test. */
+	asm volatile ( "\tnop\n" : : : "cc", "memory" );
+    return 0;
+}], have_gcc_inline_asm=yes)
+
+AC_ARG_ENABLE(gcc-inline-asm,
+   [AC_HELP_STRING([--disable-gcc-inline-asm],
+                   [disable GNU-style inline assembler])],
+   [enable_gcc_inline_asm=$enableval], [enable_gcc_inline_asm=auto])
+
+if test $enable_gcc_inline_asm = no ; then
+   have_gcc_inline_asm=disabled
+fi
+
+if test $have_gcc_inline_asm = yes ; then
+   AC_DEFINE(USE_GCC_INLINE_ASM, 1, [use GNU-style inline assembler])
+fi
+
+AC_MSG_RESULT($have_gcc_inline_asm)
+if test $enable_gcc_inline_asm = yes && test $have_gcc_inline_asm = no ; then
+   AC_MSG_ERROR([GNU-style inline assembler not detected])
+fi
+
+AM_CONDITIONAL(USE_GCC_INLINE_ASM, test $have_gcc_inline_asm = yes)
+
+dnl ==============================================
+dnl Static test programs
+
+AC_ARG_ENABLE(static-testprogs,
+   [AC_HELP_STRING([--enable-static-testprogs],
+		   [build test programs as static binaries [default=no]])],
+   [enable_static_testprogs=$enableval], [enable_static_testprogs=no])
+
+TESTPROGS_EXTRA_LDFLAGS=
+if test "x$enable_static_testprogs" = "xyes" ; then
+   TESTPROGS_EXTRA_LDFLAGS="-all-static"
+fi
+AC_SUBST(TESTPROGS_EXTRA_LDFLAGS)
+
+dnl ==============================================
+dnl Timers
+
+AC_ARG_ENABLE(timers,
+   [AC_HELP_STRING([--enable-timers],
+		   [enable TIMER_BEGIN and TIMER_END macros [default=no]])],
+   [enable_timers=$enableval], [enable_timers=no])
+
+if test $enable_timers = yes ; then 
+   AC_DEFINE(PIXMAN_TIMERS, 1, [enable TIMER_BEGIN/TIMER_END macros])
+fi
+AC_SUBST(PIXMAN_TIMERS)
+
+dnl ===================================
+dnl GTK+
+
+AC_ARG_ENABLE(gtk,
+   [AC_HELP_STRING([--enable-gtk],
+                   [enable tests using GTK+ [default=auto]])],
+   [enable_gtk=$enableval], [enable_gtk=auto])
+
+PKG_PROG_PKG_CONFIG
+
+if test $enable_gtk = yes ; then
+   AC_CHECK_LIB([pixman-1], [pixman_version_string])
+   PKG_CHECK_MODULES(GTK, [gtk+-2.0 pixman-1])
+fi
+
+if test $enable_gtk = auto ; then
+   AC_CHECK_LIB([pixman-1], [pixman_version_string], [enable_gtk=auto], [enable_gtk=no])
+fi
+
+if test $enable_gtk = auto ; then
+   PKG_CHECK_MODULES(GTK, [gtk+-2.0 pixman-1], [enable_gtk=yes], [enable_gtk=no])
+fi
+
+AM_CONDITIONAL(HAVE_GTK, [test "x$enable_gtk" = xyes])
+
+AC_SUBST(GTK_CFLAGS)
+AC_SUBST(GTK_LIBS)
+AC_SUBST(DEP_CFLAGS)
+AC_SUBST(DEP_LIBS)
+
+dnl =====================================
+dnl posix_memalign, sigaction, alarm, gettimeofday
+
+AC_CHECK_FUNC(posix_memalign, have_posix_memalign=yes, have_posix_memalign=no)
+if test x$have_posix_memalign = xyes; then
+   AC_DEFINE(HAVE_POSIX_MEMALIGN, 1, [Whether we have posix_memalign()])
+fi
+
+AC_CHECK_FUNC(sigaction, have_sigaction=yes, have_sigaction=no)
+if test x$have_sigaction = xyes; then
+   AC_DEFINE(HAVE_SIGACTION, 1, [Whether we have sigaction()])
+fi
+
+AC_CHECK_FUNC(alarm, have_alarm=yes, have_alarm=no)
+if test x$have_alarm = xyes; then
+   AC_DEFINE(HAVE_ALARM, 1, [Whether we have alarm()])
+fi
+
+AC_CHECK_HEADER([sys/mman.h],
+   [AC_DEFINE(HAVE_SYS_MMAN_H, [1], [Define to 1 if we have <sys/mman.h>])])
+
+AC_CHECK_FUNC(mprotect, have_mprotect=yes, have_mprotect=no)
+if test x$have_mprotect = xyes; then
+   AC_DEFINE(HAVE_MPROTECT, 1, [Whether we have mprotect()])
+fi
+
+AC_CHECK_FUNC(getpagesize, have_getpagesize=yes, have_getpagesize=no)
+if test x$have_getpagesize = xyes; then
+   AC_DEFINE(HAVE_GETPAGESIZE, 1, [Whether we have getpagesize()])
+fi
+
+AC_CHECK_HEADER([fenv.h],
+   [AC_DEFINE(HAVE_FENV_H, [1], [Define to 1 if we have <fenv.h>])])
+
+AC_CHECK_LIB(m, feenableexcept, have_feenableexcept=yes, have_feenableexcept=no)
+if test x$have_feenableexcept = xyes; then
+   AC_DEFINE(HAVE_FEENABLEEXCEPT, 1, [Whether we have feenableexcept()])
+fi
+
+AC_CHECK_FUNC(gettimeofday, have_gettimeofday=yes, have_gettimeofday=no)
+AC_CHECK_HEADER(sys/time.h, have_sys_time_h=yes, have_sys_time_h=no)
+if test x$have_gettimeofday = xyes && test x$have_sys_time_h = xyes; then
+   AC_DEFINE(HAVE_GETTIMEOFDAY, 1, [Whether we have gettimeofday()])
+fi
+
+dnl =====================================
+dnl Thread local storage
+
+support_for__thread=no
+
+AC_MSG_CHECKING(for __thread)
+AC_LINK_IFELSE([
+#if defined(__MINGW32__) && !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5))
+#error This MinGW version has broken __thread support
+#endif
+#ifdef __OpenBSD__
+#error OpenBSD has broken __thread support
+#endif
+static __thread int x ;
+int main () { x = 123; return x; }
+], support_for__thread=yes)
+
+if test $support_for__thread = yes; then 
+   AC_DEFINE([TOOLCHAIN_SUPPORTS__THREAD],[],[Whether the tool chain supports __thread])
+fi
+
+AC_MSG_RESULT($support_for__thread)
+
+dnl
+dnl posix tls
+dnl
+
+m4_define([pthread_test_program],[dnl
+#include <stdlib.h>
+#include <pthread.h>
+
+static pthread_once_t once_control = PTHREAD_ONCE_INIT;
+static pthread_key_t key;
+
+static void
+make_key (void)
+{
+    pthread_key_create (&key, NULL);
+}
+
+int
+main ()
+{
+    void *value = NULL;
+
+    if (pthread_once (&once_control, make_key) != 0)
+    {
+	value = NULL;
+    }
+    else
+    {
+	value = pthread_getspecific (key);
+	if (!value)
+	{
+	    value = malloc (100);
+	    pthread_setspecific (key, value);
+	}
+    }
+    return 0;
+}
+])
+
+AC_DEFUN([PIXMAN_CHECK_PTHREAD],[dnl
+    if test "z$support_for_pthread_setspecific" != "zyes"; then
+	PIXMAN_LINK_WITH_ENV(
+		[$1], [pthread_test_program],
+		[PTHREAD_CFLAGS="$CFLAGS"
+		 PTHREAD_LIBS="$LIBS"
+		 PTHREAD_LDFLAGS="$LDFLAGS"
+		 support_for_pthread_setspecific=yes])
+    fi
+])
+
+if test $support_for__thread = no; then
+    support_for_pthread_setspecific=no
+
+    AC_MSG_CHECKING(for pthread_setspecific)
+
+    PIXMAN_CHECK_PTHREAD([CFLAGS="-D_REENTRANT"; LIBS="-lpthread"])
+    PIXMAN_CHECK_PTHREAD([CFLAGS="-pthread"; LDFLAGS="-pthread"])
+    PIXMAN_CHECK_PTHREAD([CFLAGS="-D_REENTRANT"; LDFLAGS="-lroot"])
+    
+    if test $support_for_pthread_setspecific = yes; then
+	CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+	AC_DEFINE([HAVE_PTHREAD_SETSPECIFIC], [], [Whether pthread_setspecific() is supported])
+    fi
+
+    AC_MSG_RESULT($support_for_pthread_setspecific);
+fi
+
+AC_SUBST(TOOLCHAIN_SUPPORTS__THREAD)
+AC_SUBST(HAVE_PTHREAD_SETSPECIFIC)
+AC_SUBST(PTHREAD_LDFLAGS)
+AC_SUBST(PTHREAD_LIBS)
+
+dnl =====================================
+dnl __attribute__((constructor))
+
+support_for_attribute_constructor=no
+
+AC_MSG_CHECKING(for __attribute__((constructor)))
+AC_LINK_IFELSE([
+#if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7))
+/* attribute 'constructor' is supported since gcc 2.7, but some compilers
+ * may only pretend to be gcc, so let's try to actually use it
+ */
+static int x = 1;
+static void __attribute__((constructor)) constructor_function () { x = 0; }
+int main (void) { return x; }
+#else
+#error not gcc or gcc version is older than 2.7
+#endif
+], support_for_attribute_constructor=yes)
+
+if test x$support_for_attribute_constructor = xyes; then
+   AC_DEFINE([TOOLCHAIN_SUPPORTS_ATTRIBUTE_CONSTRUCTOR],
+             [],[Whether the tool chain supports __attribute__((constructor))])
+fi
+
+AC_MSG_RESULT($support_for_attribute_constructor)
+AC_SUBST(TOOLCHAIN_SUPPORTS_ATTRIBUTE_CONSTRUCTOR)
+
+AC_OUTPUT([pixman-1.pc
+           pixman-1-uninstalled.pc
+           Makefile
+	   pixman/Makefile
+	   pixman/pixman-version.h
+	   test/Makefile])