add pixman and libpngraylib

1 files changed, 1161 insertions, 0 deletions

diff --git a/libs/pixman-0.40.0/configure.ac b/libs/pixman-0.40.0/configure.ac
new file mode 100644
index 0000000..43e9b20
--- /dev/null
+++ b/libs/pixman-0.40.0/configure.ac
@@ -0,0 +1,1161 @@
+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], 40)
+m4_define([pixman_micro], 0)
+
+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-xz])
+
+# Suppress verbose compile lines
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
+
+AC_CONFIG_HEADERS(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=""
+	$1
+	CFLAGS="$save_CFLAGS $CFLAGS"
+	LDFLAGS="$save_LDFLAGS $LDFLAGS"
+	LIBS="$save_LIBS $LIBS"
+	AC_LINK_IFELSE(
+		[AC_LANG_SOURCE([$2])],
+		[pixman_cc_stderr=`test -f conftest.err && cat conftest.err`
+		 pixman_cc_flag=yes],
+		[pixman_cc_stderr=`test -f conftest.err && cat conftest.err`
+		 pixman_cc_flag=no])
+
+	if test "x$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 $SUNCC = yes &&			\
+   test "x$test_CFLAGS" = "x" &&	\
+   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([-Wdeclaration-after-statement])
+PIXMAN_CHECK_CFLAG([-Wno-unused-local-typedefs])
+PIXMAN_CHECK_CFLAG([-fno-strict-aliasing])
+
+dnl =========================================================================
+dnl OpenMP for the test suite?
+dnl
+
+# Check for OpenMP support only when autoconf support that (require autoconf >=2.62)
+OPENMP_CFLAGS=
+m4_ifdef([AC_OPENMP], [AC_OPENMP])
+
+if test "x$enable_openmp" = "xyes" && test "x$ac_cv_prog_c_openmp" = "xunsupported" ; then
+  AC_MSG_WARN([OpenMP support requested but found unsupported])
+fi
+
+dnl May not fail to link without -Wall -Werror added
+dnl So try to link only when openmp is supported
+dnl ac_cv_prog_c_openmp is not defined when --disable-openmp is used
+if test "x$ac_cv_prog_c_openmp" != "xunsupported" && test "x$ac_cv_prog_c_openmp" != "x"; then
+  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$have_openmp" = "xyes" ; then
+    AC_DEFINE(USE_OPENMP, 1, [use OpenMP in the test suite])
+  fi
+fi
+AC_SUBST(OPENMP_CFLAGS)
+
+dnl =========================================================================
+dnl -fvisibility stuff
+
+PIXMAN_CHECK_CFLAG([-fvisibility=hidden], [dnl
+#if defined(__GNUC__) && (__GNUC__ >= 4)
+#ifdef _WIN32
+#error Have -fvisibility but it is ignored and generates a warning
+#endif
+#else
+#error Need GCC 4.0 for visibility
+#endif
+])
+
+PIXMAN_CHECK_CFLAG([-xldscope=hidden], [dnl
+#if defined(__SUNPRO_C) && (__SUNPRO_C >= 0x550)
+#else
+#error Need Sun Studio 8 for visibility
+#endif
+])
+
+dnl ===========================================================================
+dnl Check for Loongson Multimedia Instructions
+
+if test "x$LS_CFLAGS" = "x" ; then
+    LS_CFLAGS="-mloongson-mmi"
+fi
+
+have_loongson_mmi=no
+AC_MSG_CHECKING(whether to use Loongson MMI assembler)
+
+xserver_save_CFLAGS=$CFLAGS
+CFLAGS=" $LS_CFLAGS $CFLAGS -I$srcdir"
+AC_LINK_IFELSE([AC_LANG_SOURCE([[
+#ifndef __mips_loongson_vector_rev
+#error "Loongson Multimedia Instructions are only available on Loongson"
+#endif
+#if defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 4))
+#error "Need GCC >= 4.4 for Loongson MMI compilation"
+#endif
+#include "pixman/loongson-mmintrin.h"
+int main () {
+    union {
+        __m64 v;
+        char c[8];
+    } a = { .c = {1, 2, 3, 4, 5, 6, 7, 8} };
+    int b = 4;
+    __m64 c = _mm_srli_pi16 (a.v, b);
+    return 0;
+}]])], have_loongson_mmi=yes)
+CFLAGS=$xserver_save_CFLAGS
+
+AC_ARG_ENABLE(loongson-mmi,
+   [AC_HELP_STRING([--disable-loongson-mmi],
+                   [disable Loongson MMI fast paths])],
+   [enable_loongson_mmi=$enableval], [enable_loongson_mmi=auto])
+
+if test $enable_loongson_mmi = no ; then
+   have_loongson_mmi=disabled
+fi
+
+if test $have_loongson_mmi = yes ; then
+   AC_DEFINE(USE_LOONGSON_MMI, 1, [use Loongson Multimedia Instructions])
+else
+   LS_CFLAGS=
+fi
+
+AC_MSG_RESULT($have_loongson_mmi)
+if test $enable_loongson_mmi = yes && test $have_loongson_mmi = no ; then
+   AC_MSG_ERROR([Loongson MMI not detected])
+fi
+
+AM_CONDITIONAL(USE_LOONGSON_MMI, test $have_loongson_mmi = yes)
+
+dnl ===========================================================================
+dnl Check for MMX
+
+if test "x$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 $CFLAGS"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#if defined(__GNUC__) && (__GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4))
+#error "Need GCC >= 3.4 for MMX intrinsics"
+#endif
+#include <mmintrin.h>
+#include <stdint.h>
+
+/* Check support for block expressions */
+#define _mm_shuffle_pi16(A, N)						\
+    ({									\
+	__m64 ret;							\
+									\
+	/* Some versions of clang will choke on K */ 			\
+	asm ("pshufw %2, %1, %0\n\t"					\
+	     : "=y" (ret)						\
+	     : "y" (A), "K" ((const int8_t)N)				\
+	);								\
+									\
+	ret;								\
+    })
+
+int main () {
+    __m64 v = _mm_cvtsi32_si64 (1);
+    __m64 w;
+
+    w = _mm_shuffle_pi16(v, 5);
+
+    /* Some versions of clang will choke on this */
+    asm ("pmulhuw %1, %0\n\t"
+	: "+y" (w)
+	: "y" (v)
+    );
+
+    return _mm_cvtsi64_si32 (v);
+}]])], have_mmx_intrinsics=yes)
+CFLAGS=$xserver_save_CFLAGS
+
+AC_ARG_ENABLE(mmx,
+   [AC_HELP_STRING([--disable-mmx],
+                   [disable x86 MMX fast paths])],
+   [enable_mmx=$enableval], [enable_mmx=auto])
+
+if test $enable_mmx = no ; then
+   have_mmx_intrinsics=disabled
+fi
+
+if test $have_mmx_intrinsics = yes ; then
+   AC_DEFINE(USE_X86_MMX, 1, [use x86 MMX compiler intrinsics])
+else
+   MMX_CFLAGS=
+fi
+
+AC_MSG_RESULT($have_mmx_intrinsics)
+if test $enable_mmx = yes && test $have_mmx_intrinsics = no ; then
+   AC_MSG_ERROR([x86 MMX intrinsics not detected])
+fi
+
+AM_CONDITIONAL(USE_X86_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="-msse2 -Winline"
+   fi
+fi
+
+have_sse2_intrinsics=no
+AC_MSG_CHECKING(whether to use SSE2 intrinsics)
+xserver_save_CFLAGS=$CFLAGS
+CFLAGS="$SSE2_CFLAGS $CFLAGS"
+
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#if defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 2))
+#   if !defined(__amd64__) && !defined(__x86_64__)
+#      error "Need GCC >= 4.2 for SSE2 intrinsics on x86"
+#   endif
+#endif
+#include <mmintrin.h>
+#include <xmmintrin.h>
+#include <emmintrin.h>
+int param;
+int main () {
+    __m128i a = _mm_set1_epi32 (param), b = _mm_set1_epi32 (param + 1), c;
+	c = _mm_xor_si128 (a, b);
+    return _mm_cvtsi128_si32(c);
+}]])], have_sse2_intrinsics=yes)
+CFLAGS=$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 $have_sse2_intrinsics = yes)
+
+dnl ===========================================================================
+dnl Check for SSSE3
+
+if test "x$SSSE3_CFLAGS" = "x" ; then
+    SSSE3_CFLAGS="-mssse3 -Winline"
+fi
+
+have_ssse3_intrinsics=no
+AC_MSG_CHECKING(whether to use SSSE3 intrinsics)
+xserver_save_CFLAGS=$CFLAGS
+CFLAGS="$SSSE3_CFLAGS $CFLAGS"
+
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#include <mmintrin.h>
+#include <xmmintrin.h>
+#include <emmintrin.h>
+#include <tmmintrin.h>
+int param;
+int main () {
+    __m128i a = _mm_set1_epi32 (param), b = _mm_set1_epi32 (param + 1), c;
+    c = _mm_maddubs_epi16 (a, b);
+    return _mm_cvtsi128_si32(c);
+}]])], have_ssse3_intrinsics=yes)
+CFLAGS=$xserver_save_CFLAGS
+
+AC_ARG_ENABLE(ssse3,
+   [AC_HELP_STRING([--disable-ssse3],
+                   [disable SSSE3 fast paths])],
+   [enable_ssse3=$enableval], [enable_ssse3=auto])
+
+if test $enable_ssse3 = no ; then
+   have_ssse3_intrinsics=disabled
+fi
+
+if test $have_ssse3_intrinsics = yes ; then
+   AC_DEFINE(USE_SSSE3, 1, [use SSSE3 compiler intrinsics])
+fi
+
+AC_MSG_RESULT($have_ssse3_intrinsics)
+if test $enable_ssse3 = yes && test $have_ssse3_intrinsics = no ; then
+   AC_MSG_ERROR([SSSE3 intrinsics not detected])
+fi
+
+AM_CONDITIONAL(USE_SSSE3, test $have_ssse3_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="$LDFLAGS -Wl,-M,pixman/solaris-hwcap.mapfile"
+	 AC_LINK_IFELSE([AC_LANG_SOURCE([[int main() { return 0; }]])],
+			use_hwcap_mapfile=yes,
+			HWCAP_LDFLAGS="")
+	 LDFLAGS="$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="$HWCAP_LDFLAGS"
+      fi
+      ;;
+esac
+
+AC_SUBST(LS_CFLAGS)
+AC_SUBST(IWMMXT_CFLAGS)
+AC_SUBST(MMX_CFLAGS)
+AC_SUBST(MMX_LDFLAGS)
+AC_SUBST(SSE2_CFLAGS)
+AC_SUBST(SSE2_LDFLAGS)
+AC_SUBST(SSSE3_CFLAGS)
+
+dnl ===========================================================================
+dnl Check for VMX/Altivec
+if test -n "`$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 $CFLAGS"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#if defined(__GNUC__) && (__GNUC__ < 3 || (__GNUC__ == 3 && __GNUC_MINOR__ < 4))
+#error "Need GCC >= 3.4 for sane altivec support"
+#endif
+#include <altivec.h>
+int main () {
+    vector unsigned int v = vec_splat_u32 (1);
+    v = vec_sub (v, v);
+    return 0;
+}]])], have_vmx_intrinsics=yes)
+CFLAGS=$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 $CFLAGS"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+.text
+.arch armv6
+.object_arch armv4
+.arm
+.altmacro
+#ifndef __ARM_EABI__
+#error EABI is required (to be sure that calling conventions are compatible)
+#endif
+pld [r0]
+uqadd8 r0, r0, r0]])], have_arm_simd=yes)
+CFLAGS=$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 $CFLAGS"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+.text
+.fpu neon
+.arch armv7a
+.object_arch armv4
+.eabi_attribute 10, 0
+.arm
+.altmacro
+#ifndef __ARM_EABI__
+#error EABI is required (to be sure that calling conventions are compatible)
+#endif
+pld [r0]
+vmovn.u16 d0, q0]])], have_arm_neon=yes)
+CFLAGS=$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 $have_arm_neon = no ; then
+   AC_MSG_ERROR([ARM NEON intrinsics not detected])
+fi
+
+dnl ===========================================================================
+dnl Check for IWMMXT
+
+AC_ARG_ENABLE(arm-iwmmxt,
+   [AC_HELP_STRING([--disable-arm-iwmmxt],
+                   [disable ARM IWMMXT fast paths])],
+   [enable_iwmmxt=$enableval], [enable_iwmmxt=auto])
+
+AC_ARG_ENABLE(arm-iwmmxt2,
+   [AC_HELP_STRING([--disable-arm-iwmmxt2],
+                   [build ARM IWMMXT fast paths with -march=iwmmxt instead of -march=iwmmxt2])],
+   [enable_iwmmxt2=$enableval], [enable_iwmmxt2=auto])
+
+if test "x$IWMMXT_CFLAGS" = "x" ; then
+   IWMMXT_CFLAGS="-flax-vector-conversions -Winline -march=iwmmxt"
+   if test $enable_iwmmxt2 != no ; then
+      IWMMXT_CFLAGS="${IWMMXT_CFLAGS}2"
+   fi
+fi
+
+have_iwmmxt_intrinsics=no
+AC_MSG_CHECKING(whether to use ARM IWMMXT intrinsics)
+xserver_save_CFLAGS=$CFLAGS
+CFLAGS="$CFLAGS $IWMMXT_CFLAGS"
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#ifndef __arm__
+#error "IWMMXT is only available on ARM"
+#endif
+#ifndef __IWMMXT__
+#error "IWMMXT not enabled (with -march=iwmmxt)"
+#endif
+#if defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8))
+#error "Need GCC >= 4.8 for IWMMXT intrinsics"
+#endif
+#include <mmintrin.h>
+int main () {
+	union {
+		__m64 v;
+		char c[8];
+	} a = { .c = {1, 2, 3, 4, 5, 6, 7, 8} };
+	int b = 4;
+	__m64 c = _mm_srli_si64 (a.v, b);
+}]])], have_iwmmxt_intrinsics=yes)
+CFLAGS=$xserver_save_CFLAGS
+
+if test $enable_iwmmxt = no ; then
+   have_iwmmxt_intrinsics=disabled
+fi
+
+if test $have_iwmmxt_intrinsics = yes ; then
+   AC_DEFINE(USE_ARM_IWMMXT, 1, [use ARM IWMMXT compiler intrinsics])
+else
+   IWMMXT_CFLAGS=
+fi
+
+AC_MSG_RESULT($have_iwmmxt_intrinsics)
+if test $enable_iwmmxt = yes && test $have_iwmmxt_intrinsics = no ; then
+   AC_MSG_ERROR([IWMMXT intrinsics not detected])
+fi
+
+AM_CONDITIONAL(USE_ARM_IWMMXT, test $have_iwmmxt_intrinsics = yes)
+
+dnl ==========================================================================
+dnl Check if assembler is gas compatible and supports MIPS DSPr2 instructions
+
+have_mips_dspr2=no
+AC_MSG_CHECKING(whether to use MIPS DSPr2 assembler)
+xserver_save_CFLAGS=$CFLAGS
+CFLAGS="-mdspr2 $CFLAGS"
+
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+#if !(defined(__mips__) &&  __mips_isa_rev >= 2)
+#error MIPS DSPr2 is currently only available on MIPS32r2 platforms.
+#endif
+int
+main ()
+{
+    int c = 0, a = 0, b = 0;
+    __asm__ __volatile__ (
+        "precr.qb.ph %[c], %[a], %[b]          \n\t"
+        : [c] "=r" (c)
+        : [a] "r" (a), [b] "r" (b)
+    );
+    return c;
+}]])], have_mips_dspr2=yes)
+CFLAGS=$xserver_save_CFLAGS
+
+AC_ARG_ENABLE(mips-dspr2,
+   [AC_HELP_STRING([--disable-mips-dspr2],
+                   [disable MIPS DSPr2 fast paths])],
+   [enable_mips_dspr2=$enableval], [enable_mips_dspr2=auto])
+
+if test $enable_mips_dspr2 = no ; then
+   have_mips_dspr2=disabled
+fi
+
+if test $have_mips_dspr2 = yes ; then
+   AC_DEFINE(USE_MIPS_DSPR2, 1, [use MIPS DSPr2 assembly optimizations])
+fi
+
+AM_CONDITIONAL(USE_MIPS_DSPR2, test $have_mips_dspr2 = yes)
+
+AC_MSG_RESULT($have_mips_dspr2)
+if test $enable_mips_dspr2 = yes && test $have_mips_dspr2 = no ; then
+   AC_MSG_ERROR([MIPS DSPr2 instructions not detected])
+fi
+
+dnl =========================================================================================
+dnl Check for GNU-style inline assembly support
+
+have_gcc_inline_asm=no
+AC_MSG_CHECKING(whether to use GNU-style inline assembler)
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
+int main () {
+    /* Most modern architectures have a NOP instruction, so this is a fairly generic test. */
+	asm volatile ( "\tnop\n" : : : "cc", "memory" );
+    return 0;
+}]])], have_gcc_inline_asm=yes)
+
+AC_ARG_ENABLE(gcc-inline-asm,
+   [AC_HELP_STRING([--disable-gcc-inline-asm],
+                   [disable GNU-style inline assembler])],
+   [enable_gcc_inline_asm=$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 $enable_timers = yes ; then 
+   AC_DEFINE(PIXMAN_TIMERS, 1, [enable TIMER_BEGIN/TIMER_END macros])
+fi
+AC_SUBST(PIXMAN_TIMERS)
+
+dnl ===================================
+dnl gnuplot
+
+AC_ARG_ENABLE(gnuplot,
+   [AC_HELP_STRING([--enable-gnuplot],
+                   [enable output of filters that can be piped to gnuplot [default=no]])],
+   [enable_gnuplot=$enableval], [enable_gnuplot=no])
+
+if test $enable_gnuplot = yes ; then
+   AC_DEFINE(PIXMAN_GNUPLOT, 1, [enable output that can be piped to gnuplot])
+fi
+AC_SUBST(PIXMAN_GNUPLOT)
+
+dnl ===================================
+dnl GTK+
+
+AC_ARG_ENABLE(gtk,
+   [AC_HELP_STRING([--enable-gtk],
+                   [enable tests using GTK+ [default=auto]])],
+   [enable_gtk=$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 >= 2.16 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 $enable_gtk = auto ; then
+   PKG_CHECK_MODULES(GTK, [gtk+-2.0 >= 2.16 pixman-1], [enable_gtk=yes], [enable_gtk=no])
+fi
+
+AM_CONDITIONAL(HAVE_GTK, [test "x$enable_gtk" = xyes])
+
+AC_SUBST(GTK_CFLAGS)
+AC_SUBST(GTK_LIBS)
+
+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$have_alarm = xyes; then
+   AC_DEFINE(HAVE_ALARM, 1, [Whether we have alarm()])
+fi
+
+AC_CHECK_HEADER([sys/mman.h],
+   [AC_DEFINE(HAVE_SYS_MMAN_H, [1], [Define to 1 if we have <sys/mman.h>])])
+
+AC_CHECK_FUNC(mmap, have_mmap=yes, have_mmap=no)
+if test x$have_mmap = xyes; then
+   AC_DEFINE(HAVE_MMAP, 1, [Whether we have mmap()])
+fi
+
+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$have_feenableexcept = xyes; then
+   AC_DEFINE(HAVE_FEENABLEEXCEPT, 1, [Whether we have feenableexcept()])
+fi
+
+AC_CHECK_DECL([FE_DIVBYZERO],
+	[AC_DEFINE(HAVE_FEDIVBYZERO, 1, [Whether we have FE_DIVBYZERO])],
+	[],
+	[[#include <fenv.h>]])
+
+AC_CHECK_FUNC(gettimeofday, have_gettimeofday=yes, have_gettimeofday=no)
+AC_CHECK_HEADER(sys/time.h, have_sys_time_h=yes, have_sys_time_h=no)
+if test x$have_gettimeofday = xyes && test x$have_sys_time_h = xyes; then
+   AC_DEFINE(HAVE_GETTIMEOFDAY, 1, [Whether we have gettimeofday()])
+fi
+
+dnl =====================================
+dnl Check for missing sqrtf() as, e.g., for Solaris 9
+
+AC_SEARCH_LIBS([sqrtf], [m], [],
+               [AC_DEFINE([sqrtf], [sqrt],
+                          [Define to sqrt if you do not have the `sqrtf' function.])])
+
+dnl =====================================
+dnl Thread local storage
+
+AC_MSG_CHECKING(for thread local storage (TLS) support)
+AC_CACHE_VAL(ac_cv_tls, [
+    ac_cv_tls=none
+    keywords="__thread __declspec(thread)"
+    for kw in $keywords ; do
+        AC_TRY_COMPILE([
+#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
+
+int $kw test;], [], [ac_cv_tls=$kw; break])
+    done
+])
+AC_MSG_RESULT($ac_cv_tls)
+
+if test "$ac_cv_tls" != "none"; then
+    AC_DEFINE_UNQUOTED([TLS], $ac_cv_tls, [The compiler supported TLS storage class])
+fi
+
+dnl
+dnl posix tls
+dnl
+
+m4_define([pthread_test_program],AC_LANG_SOURCE([[dnl
+#include <stdlib.h>
+#include <pthread.h>
+
+static pthread_once_t once_control = PTHREAD_ONCE_INIT;
+static pthread_key_t key;
+
+static void
+make_key (void)
+{
+    pthread_key_create (&key, NULL);
+}
+
+int
+main ()
+{
+    void *value = NULL;
+
+    if (pthread_once (&once_control, make_key) != 0)
+    {
+	value = NULL;
+    }
+    else
+    {
+	value = pthread_getspecific (key);
+	if (!value)
+	{
+	    value = malloc (100);
+	    pthread_setspecific (key, value);
+	}
+    }
+    return 0;
+}
+]]))
+
+AC_DEFUN([PIXMAN_CHECK_PTHREAD],[dnl
+    if test "z$support_for_pthreads" != "zyes"; then
+	PIXMAN_LINK_WITH_ENV(
+		[$1], [pthread_test_program],
+		[PTHREAD_CFLAGS="$CFLAGS"
+		 PTHREAD_LIBS="$LIBS"
+		 PTHREAD_LDFLAGS="$LDFLAGS"
+		 support_for_pthreads=yes])
+    fi
+])
+
+support_for_pthreads=no
+
+AC_MSG_CHECKING(for pthreads)
+
+PIXMAN_CHECK_PTHREAD([CFLAGS="-pthread"; LDFLAGS="-pthread"])
+PIXMAN_CHECK_PTHREAD([CFLAGS="-D_REENTRANT"; LIBS="-lpthread"])
+PIXMAN_CHECK_PTHREAD([CFLAGS="-D_REENTRANT"; LDFLAGS="-lroot"])
+    
+if test $support_for_pthreads = yes; then
+    AC_DEFINE([HAVE_PTHREADS], [], [Whether pthreads is supported])
+    if test $ac_cv_tls = none ; then
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+    fi
+fi
+
+AC_MSG_RESULT($support_for_pthreads)
+
+AC_SUBST(TOOLCHAIN_SUPPORTS__THREAD)
+AC_SUBST(HAVE_PTHREADS)
+AC_SUBST(PTHREAD_LDFLAGS)
+AC_SUBST(PTHREAD_LIBS)
+AC_SUBST(PTHREAD_CFLAGS)
+
+dnl =====================================
+dnl __attribute__((constructor))
+
+support_for_attribute_constructor=no
+
+AC_MSG_CHECKING(for __attribute__((constructor)))
+AC_LINK_IFELSE([AC_LANG_SOURCE([[
+#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)
+
+dnl =====================================
+dnl __float128
+
+support_for_float128=no
+
+AC_MSG_CHECKING(for __float128)
+AC_LINK_IFELSE([AC_LANG_SOURCE([[
+__float128 a = 1.0Q, b = 2.0Q; int main (void) { return a + b; }
+]])], support_for_float128=yes)
+
+if test x$support_for_float128 = xyes; then
+   AC_DEFINE([HAVE_FLOAT128], [], [Whether the tool chain supports __float128])
+fi
+
+AC_MSG_RESULT($support_for_float128)
+
+dnl =====================================
+dnl __builtin_clz
+
+support_for_builtin_clz=no
+
+AC_MSG_CHECKING(for __builtin_clz)
+AC_LINK_IFELSE([AC_LANG_SOURCE([[
+unsigned int x = 11; int main (void) { return __builtin_clz(x); }
+]])], support_for_builtin_clz=yes)
+
+if test x$support_for_builtin_clz = xyes; then
+   AC_DEFINE([HAVE_BUILTIN_CLZ], [], [Whether the compiler supports __builtin_clz])
+fi
+
+AC_MSG_RESULT($support_for_builtin_clz)
+
+dnl =====================================
+dnl GCC vector extensions
+
+support_for_gcc_vector_extensions=no
+
+AC_MSG_CHECKING(for GCC vector extensions)
+AC_LINK_IFELSE([AC_LANG_SOURCE([[
+unsigned int __attribute__ ((vector_size(16))) e, a, b;
+int main (void) { e = a - ((b << 27) + (b >> (32 - 27))) + 1; return e[0]; }
+]])], support_for_gcc_vector_extensions=yes)
+
+if test x$support_for_gcc_vector_extensions = xyes; then
+   AC_DEFINE([HAVE_GCC_VECTOR_EXTENSIONS], [],
+             [Whether the compiler supports GCC vector extensions])
+fi
+
+AC_MSG_RESULT($support_for_gcc_vector_extensions)
+
+dnl ==================
+dnl libpng
+
+AC_ARG_ENABLE(libpng, AS_HELP_STRING([--enable-libpng], [Build support for libpng (default: auto)]),
+                      [have_libpng=$enableval], [have_libpng=auto])
+
+case x$have_libpng in
+	xyes) PKG_CHECK_MODULES(PNG, [libpng]) ;;
+	xno) ;;
+	*) PKG_CHECK_MODULES(PNG, [libpng], have_libpng=yes, have_libpng=no) ;;
+esac
+
+if test x$have_libpng = xyes; then
+    AC_DEFINE([HAVE_LIBPNG], [1], [Whether we have libpng])
+fi
+
+AC_SUBST(HAVE_LIBPNG)
+
+AC_OUTPUT([pixman-1.pc
+           pixman-1-uninstalled.pc
+           Makefile
+	   pixman/Makefile
+	   pixman/pixman-version.h
+	   demos/Makefile
+	   test/Makefile])
+
+m4_if(m4_eval(pixman_minor % 2), [1], [
+   echo
+   echo "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@"
+   echo
+   echo "      Thanks for testing this development snapshot of pixman. Please"
+   echo "      report any problems you find, either by sending email to "
+   echo
+   echo "          pixman@lists.freedesktop.org"
+   echo
+   echo "      or by filing a bug at "
+   echo
+   echo "          https://bugs.freedesktop.org/enter_bug.cgi?product=pixman "
+   echo
+   echo "      If you are looking for a stable release of pixman, please note "
+   echo "      that stable releases have _even_ minor version numbers. Ie., "
+   echo "      pixman-0.]m4_eval(pixman_minor & ~1)[.x are stable releases, whereas pixman-$PIXMAN_VERSION_MAJOR.$PIXMAN_VERSION_MINOR.$PIXMAN_VERSION_MICRO is a "
+   echo "      development snapshot that may contain bugs and experimental "
+   echo "      features. "
+   echo 
+   echo "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@"
+   echo
+])