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], 34)

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-bzip2])

# 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="-march=loongson2f"

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 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