radeonsi: remove r600_common_screen - mesa.git - Unnamed repository; edit this file 'description' to name the repository.

path: root/src/gallium/drivers/etnaviv/Automake.inc

diff options

author	Marek Olšák <[email protected]>	2017-11-26 03:38:44 +0100
committer	Marek Olšák <[email protected]>	2017-11-29 18:21:30 +0100
commit	950221f9231eac6e76addf5e806e45fde6e35fc0 (patch)
tree	9620f5c6b20f2b58ae99902756f633e6cd7e896b /src/gallium/drivers/etnaviv/Automake.inc
parent	4d1fe8f9646a9ad20ba8eedd8b9deac493e69989 (diff)

radeonsi: remove r600_common_screen

Most files in gallium/radeon now include si_pipe.h. chip_class and family are now here: sscreen->info.family sscreen->info.chip_class Reviewed-by: Nicolai Hähnle <[email protected]>

Diffstat (limited to 'src/gallium/drivers/etnaviv/Automake.inc')

0 files changed, 0 insertions, 0 deletions

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dnl
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dnl
dnl Process this file with autoconf to create configure.

AC_PREREQ([2.60])

dnl Tell the user about autoconf.html in the --help output
m4_divert_once([HELP_END], [
See docs/autoconf.html for more details on the options for Mesa.])

m4_define(MESA_VERSION, m4_normalize(m4_include(VERSION)))
AC_INIT([Mesa], [MESA_VERSION],
    [https://bugs.freedesktop.org/enter_bug.cgi?product=Mesa])
AC_CONFIG_AUX_DIR([bin])
AC_CONFIG_MACRO_DIR([m4])
AC_CANONICAL_SYSTEM
AM_INIT_AUTOMAKE([foreign tar-ustar dist-xz subdir-objects])

dnl We only support native Windows builds (MinGW/MSVC) through SCons.
case "$host_os" in
mingw*)
    AC_MSG_ERROR([MinGW build not supported through autoconf/automake, use SCons instead])
    ;;
esac

AC_ARG_ENABLE(autotools,
   [AS_HELP_STRING([--enable-autotools],
                   [Enable the use of this autotools based build configuration])],
   [enable_autotools=$enableval], [enable_autotools=no])

if test "x$enable_autotools" != "xyes" ; then
    AC_MSG_ERROR([the autotools build system has been deprecated in favour of
    meson and will be removed eventually. For instructions on how to use meson
    see https://www.mesa3d.org/meson.html.
    If you still want to use the autotools build, then add --enable-autotools
    to the configure command line.])
fi

# Support silent build rules, requires at least automake-1.11. Disable
# by either passing --disable-silent-rules to configure or passing V=1
# to make
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])],
    [AC_SUBST([AM_DEFAULT_VERBOSITY], [1])])

m4_ifdef([AM_PROG_AR], [AM_PROG_AR])

dnl Set internal versions
OSMESA_VERSION=8
AC_SUBST([OSMESA_VERSION])
OPENCL_VERSION=1
AC_SUBST([OPENCL_VERSION])

# The idea is that libdrm is distributed as one cohesive package, even
# though it is composed of multiple libraries. However some drivers
# may have different version requirements than others. This list
# codifies which drivers need which version of libdrm. Any libdrm
# version dependencies in non-driver-specific code should be reflected
# in the first entry.
LIBDRM_REQUIRED=2.4.75
LIBDRM_RADEON_REQUIRED=2.4.71
LIBDRM_AMDGPU_REQUIRED=2.4.97
LIBDRM_INTEL_REQUIRED=2.4.75
LIBDRM_NVVIEUX_REQUIRED=2.4.66
LIBDRM_NOUVEAU_REQUIRED=2.4.66
LIBDRM_ETNAVIV_REQUIRED=2.4.89
LIBDRM_VC4_REQUIRED=2.4.89

dnl Versions for external dependencies
DRI2PROTO_REQUIRED=2.8
GLPROTO_REQUIRED=1.4.14
LIBOMXIL_BELLAGIO_REQUIRED=0.0
LIBOMXIL_TIZONIA_REQUIRED=0.10.0
LIBVA_REQUIRED=0.39.0
VDPAU_REQUIRED=1.1
WAYLAND_REQUIRED=1.11
WAYLAND_EGL_BACKEND_REQUIRED=3
WAYLAND_PROTOCOLS_REQUIRED=1.8
XCB_REQUIRED=1.9.3
XCBDRI2_REQUIRED=1.8
XCBDRI3_MODIFIERS_REQUIRED=1.13
XCBGLX_REQUIRED=1.8.1
XCBPRESENT_MODIFIERS_REQUIRED=1.13
XDAMAGE_REQUIRED=1.1
XSHMFENCE_REQUIRED=1.1
XVMC_REQUIRED=1.0.6
PYTHON_MAKO_REQUIRED=0.8.0
LIBSENSORS_REQUIRED=4.0.0
ZLIB_REQUIRED=1.2.3

dnl LLVM versions
LLVM_REQUIRED_GALLIUM=3.3.0
LLVM_REQUIRED_OPENCL=3.9.0
LLVM_REQUIRED_R600=3.9.0
LLVM_REQUIRED_RADEONSI=7.0.0
LLVM_REQUIRED_RADV=7.0.0
LLVM_REQUIRED_SWR=6.0.0

dnl Check for progs
AC_PROG_CPP
AC_PROG_CC
AC_PROG_CXX
dnl add this here, so the help for this environmnet variable is close to
dnl other CC/CXX flags related help
AC_ARG_VAR([CXX11_CXXFLAGS], [Compiler flag to enable C++11 support (only needed if not
                              enabled by default and different  from -std=c++11)])
AM_PROG_CC_C_O
AC_PROG_GREP
AC_PROG_NM
AM_PROG_AS
AX_CHECK_GNU_MAKE
AM_PATH_PYTHON([2.7],, [AM_PATH_PYTHON([3.4],, [:])])

AC_PROG_SED
AC_PROG_MKDIR_P

AC_SYS_LARGEFILE


LT_PREREQ([2.2])
LT_INIT([disable-static])

AC_CHECK_PROG(RM, rm, [rm -f])

AX_PROG_BISON([],
              AS_IF([test ! -f "$srcdir/src/compiler/glsl/glcpp/glcpp-parse.c"],
                    [AC_MSG_ERROR([bison not found - unable to compile glcpp-parse.y])]))
AX_PROG_FLEX([],
             AS_IF([test ! -f "$srcdir/src/compiler/glsl/glcpp/glcpp-lex.c"],
                   [AC_MSG_ERROR([flex not found - unable to compile glcpp-lex.l])]))

AC_CHECK_PROG(INDENT, indent, indent, cat)
if test "x$INDENT" != "xcat"; then
    # Only GNU indent is supported
    INDENT_VERSION=`indent --version | grep GNU`
    if test $? -eq 0; then
       AC_SUBST(INDENT_FLAGS, '-i4 -nut -br -brs -npcs -ce -TGLubyte -TGLbyte -TBool')
    else
       INDENT="cat"
    fi
fi

AX_CHECK_PYTHON_MAKO_MODULE($PYTHON_MAKO_REQUIRED)

if test "$PYTHON" = ":"; then
    if test ! -f "$srcdir/src/util/format_srgb.c"; then
        AC_MSG_ERROR([Python not found - unable to generate sources])
    fi
else
    if test "x$acv_mako_found" = xno; then
        if test ! -f "$srcdir/src/mesa/main/format_unpack.c"; then
            AC_MSG_ERROR([Python mako module v$PYTHON_MAKO_REQUIRED or higher not found])
        fi
    fi
fi

AC_PROG_INSTALL

dnl We need a POSIX shell for parts of the build. Assume we have one
dnl in most cases.
case "$host_os" in
solaris*)
    # Solaris /bin/sh is too old/non-POSIX compliant
    AC_PATH_PROGS(POSIX_SHELL, [ksh93 ksh sh])
    SHELL="$POSIX_SHELL"
    ;;
esac

dnl clang is mostly GCC-compatible, but its version is much lower,
dnl so we have to check for it.
AC_MSG_CHECKING([if compiling with clang])

AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [[
#ifndef __clang__
       not clang
#endif
]])],
[acv_mesa_CLANG=yes], [acv_mesa_CLANG=no])

AC_MSG_RESULT([$acv_mesa_CLANG])

dnl If we're using GCC, make sure that it is at least version 4.2.0.  Older
dnl versions are explictly not supported.
GEN_ASM_OFFSETS=no
USE_GNU99=no
if test "x$GCC" = xyes -a "x$acv_mesa_CLANG" = xno; then
    AC_MSG_CHECKING([whether gcc version is sufficient])
    major=0
    minor=0

    GCC_VERSION=`$CC -dumpversion`
    if test $? -eq 0; then
        GCC_VERSION_MAJOR=`echo $GCC_VERSION | cut -d. -f1`
        GCC_VERSION_MINOR=`echo $GCC_VERSION | cut -d. -f2`
    fi

    if test $GCC_VERSION_MAJOR -lt 4 -o $GCC_VERSION_MAJOR -eq 4 -a $GCC_VERSION_MINOR -lt 2 ; then
        AC_MSG_RESULT([no])
        AC_MSG_ERROR([If using GCC, version 4.2.0 or later is required.])
    else
        AC_MSG_RESULT([yes])
    fi

    if test $GCC_VERSION_MAJOR -lt 4 -o $GCC_VERSION_MAJOR -eq 4 -a $GCC_VERSION_MINOR -lt 6 ; then
        USE_GNU99=yes
    fi
    if test "x$cross_compiling" = xyes; then
        GEN_ASM_OFFSETS=yes
    fi
fi

dnl We don't support building Mesa with Sun C compiler
dnl https://bugs.freedesktop.org/show_bug.cgi?id=93189
AC_CHECK_DECL([__SUNPRO_C], [SUNCC=yes], [SUNCC=no])
if test "x$SUNCC" = xyes; then
    AC_MSG_ERROR([Building with Sun C compiler is not supported, use GCC instead.])
fi

dnl Check for compiler builtins
AX_GCC_BUILTIN([__builtin_bswap32])
AX_GCC_BUILTIN([__builtin_bswap64])
AX_GCC_BUILTIN([__builtin_clz])
AX_GCC_BUILTIN([__builtin_clzll])
AX_GCC_BUILTIN([__builtin_ctz])
AX_GCC_BUILTIN([__builtin_expect])
AX_GCC_BUILTIN([__builtin_ffs])
AX_GCC_BUILTIN([__builtin_ffsll])
AX_GCC_BUILTIN([__builtin_popcount])
AX_GCC_BUILTIN([__builtin_popcountll])
AX_GCC_BUILTIN([__builtin_unreachable])

AX_GCC_FUNC_ATTRIBUTE([const])
AX_GCC_FUNC_ATTRIBUTE([flatten])
AX_GCC_FUNC_ATTRIBUTE([format])
AX_GCC_FUNC_ATTRIBUTE([malloc])
AX_GCC_FUNC_ATTRIBUTE([packed])
AX_GCC_FUNC_ATTRIBUTE([pure])
AX_GCC_FUNC_ATTRIBUTE([returns_nonnull])
AX_GCC_FUNC_ATTRIBUTE([unused])
AX_GCC_FUNC_ATTRIBUTE([visibility])
AX_GCC_FUNC_ATTRIBUTE([warn_unused_result])
AX_GCC_FUNC_ATTRIBUTE([weak])
AX_GCC_FUNC_ATTRIBUTE([alias])
AX_GCC_FUNC_ATTRIBUTE([noreturn])

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

dnl Make sure the pkg-config macros are defined
m4_ifndef([PKG_PROG_PKG_CONFIG],
    [m4_fatal([Could not locate the pkg-config autoconf macros.
  These are usually located in /usr/share/aclocal/pkg.m4. If your macros
  are in a different location, try setting the environment variable
  ACLOCAL="aclocal -I/other/macro/dir" before running autoreconf.])])
PKG_PROG_PKG_CONFIG()

dnl LIB_DIR - library basename
LIB_DIR=`echo $libdir | $SED 's%.*/%%'`
AC_SUBST([LIB_DIR])

dnl Cache LDFLAGS and CPPFLAGS so we can add to them and restore later
_SAVE_LDFLAGS="$LDFLAGS"
_SAVE_CPPFLAGS="$CPPFLAGS"

dnl Compiler macros
DEFINES="-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS"
AC_SUBST([DEFINES])
android=no
case "$host_os" in
*-android*)
    android=yes
    ;;
linux*|*-gnu*|gnu*|cygwin*)
    DEFINES="$DEFINES -D_GNU_SOURCE"
    ;;
solaris*)
    DEFINES="$DEFINES -DSVR4"
    ;;
esac

AM_CONDITIONAL(HAVE_ANDROID, test "x$android" = xyes)

# Toggle Werror since at some point clang started treating unknown -W
# flags as warnings, succeeding with the build, yet issuing an annoying
# warning.
save_CFLAGS="$CFLAGS"
export CFLAGS="$CFLAGS -Werror"

dnl
dnl Check compiler flags
dnl
AX_CHECK_COMPILE_FLAG([-Wall],                                 [CFLAGS="$CFLAGS -Wall"])
AX_CHECK_COMPILE_FLAG([-Werror=implicit-function-declaration], [CFLAGS="$CFLAGS -Werror=implicit-function-declaration"])
AX_CHECK_COMPILE_FLAG([-Werror=missing-prototypes],            [CFLAGS="$CFLAGS -Werror=missing-prototypes"])
AX_CHECK_COMPILE_FLAG([-Wmissing-prototypes],                  [CFLAGS="$CFLAGS -Wmissing-prototypes"])
dnl Dylan Baker: gcc and clang always accepr -Wno-*, hence check for the original warning, then set the no-* flag
AX_CHECK_COMPILE_FLAG([-Wmissing-field-initializers],          [CFLAGS="$CFLAGS -Wno-missing-field-initializers"])
AX_CHECK_COMPILE_FLAG([-Wformat-truncation],                   [CFLAGS="$CFLAGS -Wno-format-truncation"])
AX_CHECK_COMPILE_FLAG([-fno-math-errno],                       [CFLAGS="$CFLAGS -fno-math-errno"])

AX_CHECK_COMPILE_FLAG([-fno-trapping-math],                    [CFLAGS="$CFLAGS -fno-trapping-math"])
AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],                   [VISIBILITY_CFLAGS="-fvisibility=hidden"])

CFLAGS="$save_CFLAGS"

# Toggle Werror since at some point clang started treating unknown -W
# flags as warnings, succeeding with the build, yet issuing an annoying
# warning.
dnl
dnl Check C++ compiler flags
dnl
AC_LANG_PUSH([C++])
AX_CHECK_COMPILE_FLAG([-Wall],                                 [CXXFLAGS="$CXXFLAGS -Wall"])
AX_CHECK_COMPILE_FLAG([-fno-math-errno],                       [CXXFLAGS="$CXXFLAGS -fno-math-errno"])
AX_CHECK_COMPILE_FLAG([-fno-trapping-math],                    [CXXFLAGS="$CXXFLAGS -fno-trapping-math"])
AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],                   [VISIBILITY_CXXFLAGS="-fvisibility=hidden"])
AX_CHECK_COMPILE_FLAG([-Wmissing-field-initializers],          [CXXFLAGS="$CXXFLAGS -Wno-missing-field-initializers"])
AX_CHECK_COMPILE_FLAG([-Wformat-truncation],                   [CXXFLAGS="$CXXFLAGS -Wno-format-truncation"])
AC_LANG_POP([C++])

# Flags to help ensure that certain portions of the code -- and only those
# portions -- can be built with MSVC:
# - src/util, src/gallium/auxiliary, rc/gallium/drivers/llvmpipe, and
# - non-Linux/Posix OpenGL portions needs to build on MSVC 2013 (which
#   supports most of C99)
# - the rest has no compiler compiler restrictions
AX_CHECK_COMPILE_FLAG([-Werror=pointer-arith],                 [MSVC2013_COMPAT_CFLAGS="$MSVC2013_COMPAT_CFLAGS -Werror=pointer-arith"])
AX_CHECK_COMPILE_FLAG([-Werror=vla],                           [MSVC2013_COMPAT_CFLAGS="$MSVC2013_COMPAT_CFLAGS -Werror=vla"])
AC_LANG_PUSH([C++])
AX_CHECK_COMPILE_FLAG([-Werror=pointer-arith],                 [MSVC2013_COMPAT_CXXFLAGS="$MSVC2013_COMPAT_CXXFLAGS -Werror=pointer-arith"])
AX_CHECK_COMPILE_FLAG([-Werror=vla],                           [MSVC2013_COMPAT_CXXFLAGS="$MSVC2013_COMPAT_CXXFLAGS -Werror=vla"])
AC_LANG_POP([C++])

AC_SUBST([MSVC2013_COMPAT_CFLAGS])
AC_SUBST([MSVC2013_COMPAT_CXXFLAGS])

if test "x$GCC" = xyes; then
    if test "x$USE_GNU99" = xyes; then
        CFLAGS="$CFLAGS -std=gnu99"
    else
        CFLAGS="$CFLAGS -std=c99"
    fi
fi

dnl
dnl Check whether C++11 is supported, if the environment variable
dnl CXX11_CXXFLAGS is set it takes precedence.
dnl

AC_LANG_PUSH([C++])

check_cxx11_available() {
    output_support=$1
    AC_COMPILE_IFELSE(
        [AC_LANG_PROGRAM([
             #if !(__cplusplus >= 201103L)
             #error
             #endif
             #include <tuple>
        ])
    ], [
         AC_MSG_RESULT(yes)
         cxx11_support=yes
    ], AC_MSG_RESULT(no))
    eval "$output_support=\$cxx11_support"
}

HAVE_CXX11=no
save_CXXFLAGS="$CXXFLAGS"

dnl If the user provides a flag to enable c++11, then we test only this
if test "x$CXX11_CXXFLAGS" != "x"; then
   CXXFLAGS="$CXXFLAGS $CXX11_CXXFLAGS"
   AC_MSG_CHECKING(whether c++11 is enabled by via $CXX11_CXXFLAGS)
   check_cxx11_available HAVE_CXX11
else
   dnl test whether c++11 is enabled by default
   AC_MSG_CHECKING(whether c++11 is enabled by default)
   check_cxx11_available HAVE_CXX11

   dnl C++11 not enabled by default, test whether -std=c++11 does the job
   if test "x$HAVE_CXX11" != "xyes"; then
       CXX11_CXXFLAGS=-std=c++11
       CXXFLAGS="$CXXFLAGS $CXX11_CXXFLAGS"
       AC_MSG_CHECKING(whether c++11 is enabled by via $CXX11_CXXFLAGS)
       check_cxx11_available HAVE_CXX11
   fi
fi

CXXFLAGS="$save_CXXFLAGS"
AM_CONDITIONAL(HAVE_STD_CXX11, test "x$HAVE_CXX11" = "xyes")
AC_SUBST(CXX11_CXXFLAGS)
AC_LANG_POP([C++])

dnl even if the compiler appears to support it, using visibility attributes isn't
dnl going to do anything useful currently on cygwin apart from emit lots of warnings
case "$host_os" in
cygwin*)
    VISIBILITY_CFLAGS=""
    VISIBILITY_CXXFLAGS=""
    ;;
esac

AC_SUBST([VISIBILITY_CFLAGS])
AC_SUBST([VISIBILITY_CXXFLAGS])

dnl For some reason, the test for -Wno-foo always succeeds with gcc, even if the
dnl option is not supported. Hence, check for -Wfoo instead.
AX_CHECK_COMPILE_FLAG([-Woverride-init],                    [WNO_OVERRIDE_INIT="$WNO_OVERRIDE_INIT -Wno-override-init"])         # gcc
AX_CHECK_COMPILE_FLAG([-Winitializer-overrides],            [WNO_OVERRIDE_INIT="$WNO_OVERRIDE_INIT -Wno-initializer-overrides"]) # clang
AC_SUBST([WNO_OVERRIDE_INIT])

dnl
dnl Optional flags, check for compiler support
dnl
SSE41_CFLAGS="-msse4.1"
dnl Code compiled by GCC with -msse* assumes a 16 byte aligned
dnl stack, but on x86-32 such alignment is not guaranteed.
case "$target_cpu" in
i?86)
    SSE41_CFLAGS="$SSE41_CFLAGS -mstackrealign"
    ;;
esac
save_CFLAGS="$CFLAGS"
CFLAGS="$SSE41_CFLAGS $CFLAGS"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <smmintrin.h>
int param;
int main () {
    __m128i a = _mm_set1_epi32 (param), b = _mm_set1_epi32 (param + 1), c;
    c = _mm_max_epu32(a, b);
    return _mm_cvtsi128_si32(c);
}]])], SSE41_SUPPORTED=1)
CFLAGS="$save_CFLAGS"
if test "x$SSE41_SUPPORTED" = x1; then
    DEFINES="$DEFINES -DUSE_SSE41"
fi
AM_CONDITIONAL([SSE41_SUPPORTED], [test x$SSE41_SUPPORTED = x1])
AC_SUBST([SSE41_CFLAGS], $SSE41_CFLAGS)

dnl Check for new-style atomic builtins. We first check without linking to
dnl -latomic.
AC_MSG_CHECKING(whether __atomic_load_n is supported)
AC_LINK_IFELSE([AC_LANG_SOURCE([[
#include <stdint.h>
int main() {
    struct {
        uint64_t *v;
    } x;
    return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE) &
           (int)__atomic_add_fetch(x.v, (uint64_t)1, __ATOMIC_ACQ_REL);
}]])], GCC_ATOMIC_BUILTINS_SUPPORTED=yes, GCC_ATOMIC_BUILTINS_SUPPORTED=no)

dnl If that didn't work, we try linking with -latomic, which is needed on some
dnl platforms.
if test "x$GCC_ATOMIC_BUILTINS_SUPPORTED" != xyes; then
   save_LDFLAGS=$LDFLAGS
   LDFLAGS="$LDFLAGS -latomic"
   AC_LINK_IFELSE([AC_LANG_SOURCE([[
   #include <stdint.h>
   int main() {
        struct {
            uint64_t *v;
        } x;
        return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE) &
               (int)__atomic_add_fetch(x.v, (uint64_t)1, __ATOMIC_ACQ_REL);
   }]])], GCC_ATOMIC_BUILTINS_SUPPORTED=yes LIBATOMIC_LIBS="-latomic",
          GCC_ATOMIC_BUILTINS_SUPPORTED=no)
   LDFLAGS=$save_LDFLAGS
fi
AC_MSG_RESULT($GCC_ATOMIC_BUILTINS_SUPPORTED)

if test "x$GCC_ATOMIC_BUILTINS_SUPPORTED" = xyes; then
    DEFINES="$DEFINES -DUSE_GCC_ATOMIC_BUILTINS"
fi
AC_SUBST([LIBATOMIC_LIBS])

dnl Check if host supports 64-bit atomics
dnl note that lack of support usually results in link (not compile) error
AC_MSG_CHECKING(whether __sync_add_and_fetch_8 is supported)
AC_LINK_IFELSE([AC_LANG_SOURCE([[
#include <stdint.h>
uint64_t v;
int main() {
    return __sync_add_and_fetch(&v, (uint64_t)1);
}]])], GCC_64BIT_ATOMICS_SUPPORTED=yes, GCC_64BIT_ATOMICS_SUPPORTED=no)
if test "x$GCC_64BIT_ATOMICS_SUPPORTED" != xyes; then
    DEFINES="$DEFINES -DMISSING_64BIT_ATOMICS"
fi
AC_MSG_RESULT($GCC_64BIT_ATOMICS_SUPPORTED)

dnl Check for Endianness
AC_C_BIGENDIAN(
   little_endian=no,
   little_endian=yes,
   little_endian=no,
   little_endian=no
)

dnl Check for POWER8 Architecture
PWR8_CFLAGS="-mpower8-vector"
have_pwr8_intrinsics=no
AC_MSG_CHECKING(whether gcc supports -mpower8-vector)
save_CFLAGS=$CFLAGS
CFLAGS="$PWR8_CFLAGS $CFLAGS"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#if defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8))
#error "Need GCC >= 4.8 for sane POWER8 support"
#endif
#include <altivec.h>
int main () {
    vector unsigned char r;
    vector unsigned int v = vec_splat_u32 (1);
    r = __builtin_vec_vgbbd ((vector unsigned char) v);
    return 0;
}]])], have_pwr8_intrinsics=yes)
CFLAGS=$save_CFLAGS

AC_ARG_ENABLE(pwr8,
   [AS_HELP_STRING([--disable-pwr8],
                   [disable POWER8-specific instructions])],
   [enable_pwr8=$enableval], [enable_pwr8=auto])

if test "x$enable_pwr8" = xno ; then
   have_pwr8_intrinsics=disabled
fi

if test $have_pwr8_intrinsics = yes && test $little_endian = yes ; then
   DEFINES="$DEFINES -D_ARCH_PWR8"
   CXXFLAGS="$CXXFLAGS $PWR8_CFLAGS"
   CFLAGS="$CFLAGS $PWR8_CFLAGS"
else
   PWR8_CFLAGS=
fi

AC_MSG_RESULT($have_pwr8_intrinsics)
if test "x$enable_pwr8" = xyes && test $have_pwr8_intrinsics = no ; then
   AC_MSG_ERROR([POWER8 compiler support not detected])
fi

if test $have_pwr8_intrinsics = yes && test $little_endian = no ; then
   AC_MSG_WARN([POWER8 optimization is enabled only on POWER8 Little-Endian])
fi

AC_SUBST([PWR8_CFLAGS], $PWR8_CFLAGS)

dnl Can't have static and shared libraries, default to static if user
dnl explicitly requested. If both disabled, set to static since shared
dnl was explicitly requested.
case "x$enable_static$enable_shared" in
xyesyes)
    AC_MSG_ERROR([Cannot enable both static and shared. Building using --enable-shared is strongly recommended])
    ;;
xnono)
    AC_MSG_ERROR([Cannot disable both static and shared. Building using --enable-shared is strongly recommended])
    ;;
esac

AM_CONDITIONAL(BUILD_SHARED, test "x$enable_shared" = xyes)

dnl
dnl other compiler options
dnl
AC_ARG_ENABLE([debug],
    [AS_HELP_STRING([--enable-debug],
        [use debug compiler flags and macros @<:@default=disabled@:>@])],
    [enable_debug="$enableval"],
    [enable_debug=no]
)

AC_ARG_ENABLE([profile],
    [AS_HELP_STRING([--enable-profile],
        [enable profiling of code @<:@default=disabled@:>@])],
    [enable_profile="$enableval"],
    [enable_profile=no]
)

AC_ARG_ENABLE([sanitize],
    [AS_HELP_STRING([--enable-sanitize@<:@=address|undefined@:>@],
        [enable code sanitizer @<:@default=disabled@:>@])],
    [enable_sanitize="$enableval"],
    [enable_sanitize=no])

if test "x$enable_profile" = xyes; then
    DEFINES="$DEFINES -DPROFILE"
    if test "x$GCC" = xyes; then
        CFLAGS="$CFLAGS -fno-omit-frame-pointer"
    fi
    if test "x$GXX" = xyes; then
        CXXFLAGS="$CXXFLAGS -fno-omit-frame-pointer"
    fi
fi

if test "x$enable_debug" = xyes; then
    DEFINES="$DEFINES -DDEBUG"
    if test "x$enable_profile" = xyes; then
        AC_MSG_WARN([Debug and Profile are enabled at the same time])
    fi
    if test "x$GCC" = xyes; then
        if ! echo "$CFLAGS" | grep -q -e '-g'; then
            CFLAGS="$CFLAGS -g"
        fi
        if ! echo "$CFLAGS" | grep -q -e '-O'; then
            CFLAGS="$CFLAGS -O0"
        fi
    fi
    if test "x$GXX" = xyes; then
        if ! echo "$CXXFLAGS" | grep -q -e '-g'; then
            CXXFLAGS="$CXXFLAGS -g"
        fi
        if ! echo "$CXXFLAGS" | grep -q -e '-O'; then
            CXXFLAGS="$CXXFLAGS -O0"
        fi
    fi
else
   DEFINES="$DEFINES -DNDEBUG"
fi

if test "x$enable_sanitize" != xno; then
    if test "x$enable_profile" = xyes; then
        AC_MSG_WARN([Sanitize and Profile are enabled at the same time])
    fi

    CFLAGS="$CFLAGS -fsanitize=$enable_sanitize"
    CXXFLAGS="$CXXFLAGS -fsanitize=$enable_sanitize"
    LDFLAGS="$LDFLAGS -fsanitize=$enable_sanitize"

    AC_LINK_IFELSE(
        [AC_LANG_SOURCE([int main(){return 0;}])],
        [],
        [AC_MSG_FAILURE([sanitize flags '$enable_sanitize' not supported])])
fi

dnl
dnl Check if linker supports -Bsymbolic
dnl
save_LDFLAGS=$LDFLAGS
LDFLAGS="$LDFLAGS -Wl,-Bsymbolic"
AC_MSG_CHECKING([if ld supports -Bsymbolic])
AC_LINK_IFELSE(
    [AC_LANG_SOURCE([int main() { return 0;}])],
    [AC_MSG_RESULT([yes])
        BSYMBOLIC="-Wl,-Bsymbolic";],
    [AC_MSG_RESULT([no])
        BSYMBOLIC="";])
LDFLAGS=$save_LDFLAGS

AC_SUBST([BSYMBOLIC])

dnl
dnl Check if linker supports garbage collection
dnl
save_LDFLAGS=$LDFLAGS
LDFLAGS="$LDFLAGS -Wl,--gc-sections"
AC_MSG_CHECKING([whether ld supports --gc-sections])
AC_LINK_IFELSE(
    [AC_LANG_SOURCE([static char UnusedFunc() { return 5; } int main() { return 0;}])],
    [AC_MSG_RESULT([yes])
        GC_SECTIONS="-Wl,--gc-sections";],
    [AC_MSG_RESULT([no])
        GC_SECTIONS="";])
LDFLAGS=$save_LDFLAGS

AC_SUBST([GC_SECTIONS])

dnl
dnl OpenBSD does not have DT_NEEDED entries for libc by design
dnl so when these flags are passed to ld via libtool the checks will fail
dnl
case "$host_os" in
openbsd* | darwin* )
    LD_NO_UNDEFINED="" ;;
*)
    if test "x$enable_sanitize" = xno; then
        LD_NO_UNDEFINED="-Wl,--no-undefined"
    else
        LD_NO_UNDEFINED=""
    fi
    ;;
esac

AC_SUBST([LD_NO_UNDEFINED])

dnl
dnl Check if linker supports version scripts
dnl
AC_MSG_CHECKING([if the linker supports version-scripts])
save_LDFLAGS=$LDFLAGS
LDFLAGS="$LDFLAGS -Wl,--version-script=$srcdir/build-support/conftest.map"
AC_LINK_IFELSE(
    [AC_LANG_SOURCE([int main() { return 0;}])],
    [have_ld_version_script=yes;AC_MSG_RESULT(yes)],
    [have_ld_version_script=no; AC_MSG_RESULT(no)])
LDFLAGS=$save_LDFLAGS
AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")

dnl
dnl Check if linker supports dynamic list files
dnl
AC_MSG_CHECKING([if the linker supports --dynamic-list])
save_LDFLAGS=$LDFLAGS
LDFLAGS="$LDFLAGS -Wl,--dynamic-list=$srcdir/build-support/conftest.dyn"
AC_LINK_IFELSE(
    [AC_LANG_SOURCE([int main() { return 0;}])],
    [have_ld_dynamic_list=yes;AC_MSG_RESULT(yes)],
    [have_ld_dynamic_list=no; AC_MSG_RESULT(no)])
LDFLAGS=$save_LDFLAGS
AM_CONDITIONAL(HAVE_LD_DYNAMIC_LIST, test "$have_ld_dynamic_list" = "yes")

dnl
dnl OSX linker does not support build-id
dnl
case "$host_os" in
darwin*)
    LD_BUILD_ID=""
    ;;
*)
    LD_BUILD_ID="-Wl,--build-id=sha1"
    ;;
esac
AC_SUBST([LD_BUILD_ID])

dnl
dnl compatibility symlinks
dnl
case "$host_os" in
linux* )
    HAVE_COMPAT_SYMLINKS=yes ;;
* )
    HAVE_COMPAT_SYMLINKS=no ;;
esac

AM_CONDITIONAL(HAVE_COMPAT_SYMLINKS, test "x$HAVE_COMPAT_SYMLINKS" = xyes)

dnl
dnl library names
dnl
dnl Unfortunately we need to do a few things that libtool can't help us with,
dnl so we need some knowledge of shared library filenames:
dnl
dnl LIB_EXT is the extension used when creating symlinks for alternate
dnl filenames for a shared library which will be dynamically loaded
dnl
dnl IMP_LIB_EXT is the extension used when checking for the presence of a
dnl the file for a shared library we wish to link with
dnl
case "$host_os" in
darwin* )
    LIB_EXT='dylib'
    IMP_LIB_EXT=$LIB_EXT
    ;;
cygwin* )
    LIB_EXT='dll'
    IMP_LIB_EXT='dll.a'
    ;;
aix* )
    LIB_EXT='a'
    IMP_LIB_EXT=$LIB_EXT
    ;;
* )
    LIB_EXT='so'
    IMP_LIB_EXT=$LIB_EXT
    ;;
esac

AC_SUBST([LIB_EXT])

dnl
dnl Arch/platform-specific settings
dnl
AC_ARG_ENABLE([asm],
    [AS_HELP_STRING([--disable-asm],
        [disable assembly usage @<:@default=enabled on supported platforms@:>@])],
    [enable_asm="$enableval"],
    [enable_asm=yes]
)
asm_arch=""
AC_MSG_CHECKING([whether to enable assembly])
test "x$enable_asm" = xno && AC_MSG_RESULT([no])
# disable if cross compiling on x86/x86_64 since we must run gen_matypes
if test "x$enable_asm" = xyes -a "x$cross_compiling" = xyes; then
    case "$host_cpu" in
    i?86 | x86_64 | amd64)
        if test "x$host_cpu" != "x$target_cpu"; then
            enable_asm=no
            AC_MSG_RESULT([no, cross compiling])
        fi
        ;;
    esac
fi
# check for supported arches
if test "x$enable_asm" = xyes; then
    case "$host_cpu" in
    i?86)
        case "$host_os" in
        linux* | *freebsd* | dragonfly* | *netbsd* | openbsd* | gnu*)
            asm_arch=x86
            ;;
        esac
        ;;
    x86_64|amd64)
        case "$host_os" in
        linux* | *freebsd* | dragonfly* | *netbsd* | openbsd*)
            asm_arch=x86_64
            ;;
        esac
        ;;
    sparc*)
        case "$host_os" in
        linux*)
            asm_arch=sparc
            ;;
        esac
        ;;
    powerpc64le)
        case "$host_os" in
        linux*)
            asm_arch=ppc64le
            ;;
        esac
        ;;
    aarch64)
        case "$host_os" in
        linux*)
            asm_arch=aarch64
            ;;
        esac
        ;;
    arm)
        case "$host_os" in
        linux*)
            asm_arch=arm
            ;;
        esac
        ;;
    esac

    case "$asm_arch" in
    x86)
        DEFINES="$DEFINES -DUSE_X86_ASM -DUSE_MMX_ASM -DUSE_3DNOW_ASM -DUSE_SSE_ASM"
        AC_MSG_RESULT([yes, x86])
        ;;
    x86_64|amd64)
        DEFINES="$DEFINES -DUSE_X86_64_ASM"
        AC_MSG_RESULT([yes, x86_64])
        ;;
    sparc)
        DEFINES="$DEFINES -DUSE_SPARC_ASM"
        AC_MSG_RESULT([yes, sparc])
        ;;
    ppc64le)
        DEFINES="$DEFINES -DUSE_PPC64LE_ASM"
        AC_MSG_RESULT([yes, ppc64le])
        ;;
    aarch64)
        DEFINES="$DEFINES -DUSE_AARCH64_ASM"
        AC_MSG_RESULT([yes, aarch64])
        ;;
    arm)
        DEFINES="$DEFINES -DUSE_ARM_ASM"
        AC_MSG_RESULT([yes, arm])
        ;;
    *)
        AC_MSG_RESULT([no, platform not supported])
        ;;
    esac
fi

AC_HEADER_MAJOR
AC_CHECK_HEADER([xlocale.h], [DEFINES="$DEFINES -DHAVE_XLOCALE_H"])
AC_CHECK_HEADER([sys/sysctl.h], [DEFINES="$DEFINES -DHAVE_SYS_SYSCTL_H"])
AC_CHECK_HEADERS([endian.h])
AC_CHECK_HEADER([dlfcn.h], [DEFINES="$DEFINES -DHAVE_DLFCN_H"])
AC_CHECK_FUNC([strtof], [DEFINES="$DEFINES -DHAVE_STRTOF"])
AC_CHECK_FUNC([mkostemp], [DEFINES="$DEFINES -DHAVE_MKOSTEMP"])
AC_CHECK_FUNC([timespec_get], [DEFINES="$DEFINES -DHAVE_TIMESPEC_GET"])
AC_CHECK_FUNC([memfd_create], [DEFINES="$DEFINES -DHAVE_MEMFD_CREATE"])

AC_MSG_CHECKING([whether strtod has locale support])
AC_LINK_IFELSE([AC_LANG_SOURCE([[
    #define _GNU_SOURCE
    #include <stdlib.h>
    #include <locale.h>
    #ifdef HAVE_XLOCALE_H
    #include <xlocale.h>
    #endif
    int main() {
       locale_t loc = newlocale(LC_CTYPE_MASK, "C", NULL);
       const char *s = "1.0";
       char *end;
       double d = strtod_l(s, end, loc);
       float f = strtof_l(s, end, loc);
       freelocale(loc);
       return 0;
    }]])],
  [DEFINES="$DEFINES -DHAVE_STRTOD_L"];
   AC_MSG_RESULT([yes]),
   AC_MSG_RESULT([no]))

dnl Check to see if dlopen is in default libraries (like Solaris, which
dnl has it in libc), or if libdl is needed to get it.
AC_CHECK_FUNC([dlopen], [],
    [AC_CHECK_LIB([dl], [dlopen],
       [DLOPEN_LIBS="-ldl"])])
AC_SUBST([DLOPEN_LIBS])

dnl Check if that library also has dladdr
save_LIBS="$LIBS"
LIBS="$LIBS $DLOPEN_LIBS"
AC_CHECK_FUNCS([dladdr])
LIBS="$save_LIBS"

AC_CHECK_FUNC([dl_iterate_phdr], [DEFINES="$DEFINES -DHAVE_DL_ITERATE_PHDR"])

case "$host_os" in
darwin*)
    ;;
*)
    AC_CHECK_FUNCS([clock_gettime], [CLOCK_LIB=],
                   [AC_CHECK_LIB([rt], [clock_gettime], [CLOCK_LIB=-lrt],
                                 [AC_MSG_ERROR([Could not find clock_gettime])])])
    AC_SUBST([CLOCK_LIB])
    ;;
esac

dnl See if posix_memalign is available
AC_CHECK_FUNC([posix_memalign], [DEFINES="$DEFINES -DHAVE_POSIX_MEMALIGN"])

dnl Check for zlib
PKG_CHECK_MODULES([ZLIB], [zlib >= $ZLIB_REQUIRED])
DEFINES="$DEFINES -DHAVE_ZLIB"

dnl Check for pthreads
AX_PTHREAD
if test "x$ax_pthread_ok" = xno; then
    AC_MSG_ERROR([Building mesa on this platform requires pthreads])
fi
dnl AX_PTHREADS leaves PTHREAD_LIBS empty for gcc and sets PTHREAD_CFLAGS
dnl to -pthread, which causes problems if we need -lpthread to appear in
dnl pkgconfig files.  Since Android doesn't have a pthread lib, this check
dnl is not valid for that platform.
if test "x$android" = xno; then
    test -z "$PTHREAD_LIBS" && PTHREAD_LIBS="-lpthread"
fi
dnl According to the manual when using pthreads, one should add -pthread to
dnl both compile and link-time arguments.
dnl In practise that should be sufficient for all platforms, since any
dnl platforms build with GCC and Clang support the flag.
PTHREAD_LIBS="$PTHREAD_LIBS -pthread"

dnl pthread-stubs is mandatory on some BSD platforms, due to the nature of the
dnl project. Even then there's a notable issue as described in the project README
case "$host_os" in
linux* | cygwin* | darwin* | solaris* | *-gnu* | gnu* | openbsd*)
    pthread_stubs_possible="no"
    ;;
* )
    pthread_stubs_possible="yes"
    ;;
esac

if test "x$pthread_stubs_possible" = xyes; then
    PKG_CHECK_MODULES(PTHREADSTUBS, pthread-stubs >= 0.4)
fi

save_LIBS="$LIBS"
LIBS="$PTHREAD_LIBS"
AC_MSG_CHECKING(whether pthread_setaffinity_np is supported)
AC_LINK_IFELSE([AC_LANG_SOURCE([[
    #define _GNU_SOURCE
    #include <pthread.h>
    int main() {
       void *a = (void*) &pthread_setaffinity_np;
       long b = (long) a;
       return (int) b;
    }]])],
  [DEFINES="$DEFINES -DHAVE_PTHREAD_SETAFFINITY"];
   AC_MSG_RESULT([yes]),
   AC_MSG_RESULT([no]))
LIBS="$save_LIBS"

dnl Check for futex for fast inline simple_mtx_t.
AC_CHECK_HEADER([linux/futex.h], [DEFINES="$DEFINES -DHAVE_LINUX_FUTEX_H"])

dnl SELinux awareness.
AC_ARG_ENABLE([selinux],
    [AS_HELP_STRING([--enable-selinux],
        [Build SELinux-aware Mesa @<:@default=disabled@:>@])],
    [MESA_SELINUX="$enableval"],
    [MESA_SELINUX=no])
if test "x$enable_selinux" = "xyes"; then
    PKG_CHECK_MODULES([SELINUX], [libselinux], [],
        [AC_CHECK_HEADER([selinux/selinux.h],[],
                         [AC_MSG_ERROR([SELinux headers not found])])
         AC_CHECK_LIB([selinux],[is_selinux_enabled],[],
                      [AC_MSG_ERROR([SELinux library not found])])
         SELINUX_LIBS="-lselinux"])
    DEFINES="$DEFINES -DMESA_SELINUX"
fi
AC_SUBST([SELINUX_CFLAGS])
AC_SUBST([SELINUX_LIBS])

dnl
dnl LLVM
dnl
AC_ARG_ENABLE([llvm-shared-libs],
    [AS_HELP_STRING([--enable-llvm-shared-libs],
        [link with LLVM shared libraries @<:@default=enabled@:>@])],
    [enable_llvm_shared_libs="$enableval"],
    [enable_llvm_shared_libs=yes])

AC_ARG_WITH([llvm-prefix],
    [AS_HELP_STRING([--with-llvm-prefix],
        [Prefix for LLVM installations in non-standard locations])],
    [llvm_prefix="$withval"],
    [llvm_prefix=''])

PKG_CHECK_MODULES([LIBELF], [libelf], [have_libelf=yes], [have_libelf=no])
if test "x$have_libelf" = xno; then
   LIBELF_LIBS=''
   LIBELF_CFLAGS=''
   AC_CHECK_LIB([elf], [elf_memory], [have_libelf=yes;LIBELF_LIBS=-lelf], [have_libelf=no])
   AC_SUBST([LIBELF_LIBS])
   AC_SUBST([LIBELF_CFLAGS])
fi

if test -z "$LLVM_CONFIG"; then
    if test -n "$llvm_prefix"; then
        AC_PATH_TOOL([LLVM_CONFIG], [llvm-config], [no], ["$llvm_prefix/bin"])
    else
        AC_PATH_TOOL([LLVM_CONFIG], [llvm-config], [no])
    fi
fi

llvm_add_component() {
    new_llvm_component=$1
    driver_name=$2

    if $LLVM_CONFIG --components | grep -iqw $new_llvm_component ; then
        LLVM_COMPONENTS="${LLVM_COMPONENTS} ${new_llvm_component}"
    else
        AC_MSG_ERROR([LLVM component '$new_llvm_component' not enabled in your LLVM build. Required by $driver_name.])
    fi
}

llvm_add_optional_component() {
    new_llvm_component=$1
    driver_name=$2

    if $LLVM_CONFIG --components | grep -iqw $new_llvm_component ; then
        LLVM_COMPONENTS="${LLVM_COMPONENTS} ${new_llvm_component}"
    fi
}

llvm_add_default_components() {
    driver_name=$1

    # Required default components
    llvm_add_component "bitwriter" $driver_name
    llvm_add_component "engine" $driver_name
    llvm_add_component "mcdisassembler" $driver_name
    llvm_add_component "mcjit" $driver_name

    # Optional default components
    llvm_add_optional_component "inteljitevents" $driver_name
}

llvm_add_target() {
    new_llvm_target=$1
    driver_name=$2

    if $LLVM_CONFIG --targets-built | grep -iqw $new_llvm_target ; then
        llvm_add_component $new_llvm_target $driver_name
    else
        AC_MSG_ERROR([LLVM target '$new_llvm_target' not enabled in your LLVM build. Required by $driver_name.])
    fi
}

# Call this inside ` ` to get the return value.
# $1 is the llvm-config command with arguments.
strip_unwanted_llvm_flags() {
    echo " `$1` " | sed -E \
        -e 's/[[[:space:]]]+-m[[^[:space:]]]*//g' \
        -e 's/[[[:space:]]]+-DNDEBUG[[[:space:]]]/ /g' \
        -e 's/[[[:space:]]]+-D_GNU_SOURCE[[[:space:]]]/ /g' \
        -e 's/[[[:space:]]]+-pedantic[[[:space:]]]/ /g' \
        -e 's/[[[:space:]]]+-W[[^[:space:]]]*//g' \
        -e 's/[[[:space:]]]+-O[[^[:space:]]]*//g' \
        -e 's/[[[:space:]]]+-g[[^[:space:]]]*//g' \
        -e 's/-fno-rtti[[[:space:]]]/-Fno-rtti /g' \
        -e 's/[[[:space:]]]+-f[[^[:space:]]]*//g' \
        -e 's/-Fno-rtti[[[:space:]]]/-fno-rtti /g' \
        -e 's/^[[[:space:]]]//' \
        -e 's/[[[:space:]]]$//'
}

llvm_set_environment_variables() {
    if test "x$LLVM_CONFIG" != xno; then
        LLVM_VERSION=`$LLVM_CONFIG --version | egrep -o '^[[0-9.]]+'`
        LLVM_CPPFLAGS=`strip_unwanted_llvm_flags "$LLVM_CONFIG --cppflags"`
        LLVM_INCLUDEDIR=`$LLVM_CONFIG --includedir`
        LLVM_LIBDIR=`$LLVM_CONFIG --libdir`

        # We need to respect LLVM_CPPFLAGS when compiling LLVM headers.
        save_CFLAGS="$CFLAGS"
        CFLAGS="$CFLAGS $LLVM_CPPFLAGS"

        AC_COMPUTE_INT([LLVM_VERSION_MAJOR], [LLVM_VERSION_MAJOR],
            [#include "${LLVM_INCLUDEDIR}/llvm/Config/llvm-config.h"])
        AC_COMPUTE_INT([LLVM_VERSION_MINOR], [LLVM_VERSION_MINOR],
            [#include "${LLVM_INCLUDEDIR}/llvm/Config/llvm-config.h"])
        AC_COMPUTE_INT([LLVM_VERSION_PATCH], [LLVM_VERSION_PATCH],
            [#include "${LLVM_INCLUDEDIR}/llvm/Config/llvm-config.h"])

        CFLAGS="$save_CFLAGS"

        # Only needed for LLVM < 3.6.0
        if test -z "$LLVM_VERSION_PATCH"; then
            LLVM_VERSION_PATCH=0
        fi

        LLVM_VERSION_INT="${LLVM_VERSION_MAJOR}0${LLVM_VERSION_MINOR}"

        FOUND_LLVM=yes
    else
        FOUND_LLVM=no
        LLVM_VERSION_INT=0
    fi
}

require_llvm() {
    if test "x$enable_llvm" != "xyes"; then
        AC_MSG_ERROR([--enable-llvm is required when building $1])
    fi
}

llvm_require_version() {
    require_llvm $2

    llvm_target_version_major=`echo $1 | cut -d. -f1 | egrep -o '^[[0-9]]+'`
    llvm_target_version_minor=`echo $1 | cut -d. -f2 | egrep -o '^[[0-9]]+'`
    llvm_target_version_patch=`echo $1 | cut -d. -f3 | egrep -o '^[[0-9]]+'`

    if test "$LLVM_VERSION_MAJOR" -gt "$llvm_target_version_major"; then
        # major > required major
        #  --> OK
        return
    fi

    if test "$LLVM_VERSION_MAJOR" -eq "$llvm_target_version_major"; then
        if test "$LLVM_VERSION_MINOR" -gt "$llvm_target_version_minor"; then
            # major = required major and
            # minor > required minor
            #  --> OK
            return
        else
            if test "$LLVM_VERSION_MINOR" -eq "$llvm_target_version_minor"; then
                if test "$LLVM_VERSION_PATCH" -ge "$llvm_target_version_patch"; then
                    # major = required major and
                    # minor = required minor and
                    # patch >= required patch
                    #  --> OK
                    return
                fi
            fi
        fi
    fi

    AC_MSG_ERROR([LLVM $1 or newer is required for $2])
}

radeon_llvm_check() {
    if test ${LLVM_VERSION_INT} -lt 307; then
        amdgpu_llvm_target_name='r600'
    else
        amdgpu_llvm_target_name='amdgpu'
    fi

    llvm_require_version $*

    llvm_add_target $amdgpu_llvm_target_name $2

    llvm_add_default_components $2
    llvm_add_component "bitreader" $2
    llvm_add_component "ipo" $2

    if test "x$have_libelf" != xyes; then
       AC_MSG_ERROR([$2 requires libelf when using llvm])
    fi
}

llvm_set_environment_variables

AC_SUBST([LLVM_CFLAGS])
AC_SUBST([LLVM_CXXFLAGS])
AC_SUBST([LLVM_LIBS])
AC_SUBST([LLVM_LDFLAGS])
AC_SUBST([LLVM_INCLUDEDIR])

dnl
dnl libunwind
dnl
PKG_CHECK_EXISTS(libunwind, [HAVE_LIBUNWIND=yes], [HAVE_LIBUNWIND=no])
AC_ARG_ENABLE([libunwind],
    [AS_HELP_STRING([--enable-libunwind],
            [Use libunwind for backtracing (default: auto)])],
        [LIBUNWIND="$enableval"],
        [LIBUNWIND="$HAVE_LIBUNWIND"])

if test "x$LIBUNWIND" = "xyes"; then
    PKG_CHECK_MODULES(LIBUNWIND, libunwind)
    AC_DEFINE(HAVE_LIBUNWIND, 1, [Have libunwind support])
fi


dnl Options for APIs
AC_ARG_ENABLE([opengl],
    [AS_HELP_STRING([--disable-opengl],
        [disable support for standard OpenGL API @<:@default=enabled@:>@])],
    [enable_opengl="$enableval"],
    [enable_opengl=yes])
AC_ARG_ENABLE([gles1],
    [AS_HELP_STRING([--disable-gles1],
        [disable support for OpenGL ES 1.x API @<:@default=enabled@:>@])],
    [enable_gles1="$enableval"],
    [enable_gles1=yes])
AC_ARG_ENABLE([gles2],
    [AS_HELP_STRING([--disable-gles2],
        [disable support for OpenGL ES 2.x API @<:@default=enabled@:>@])],
    [enable_gles2="$enableval"],
    [enable_gles2=yes])

AC_ARG_ENABLE([dri],
    [AS_HELP_STRING([--enable-dri],
        [enable DRI modules @<:@default=enabled@:>@])],
    [enable_dri="$enableval"],
    [enable_dri=yes])

AC_ARG_ENABLE([gallium-extra-hud],
    [AS_HELP_STRING([--enable-gallium-extra-hud],
        [enable HUD block/NIC I/O HUD stats support @<:@default=disabled@:>@])],
    [enable_gallium_extra_hud="$enableval"],
    [enable_gallium_extra_hud=no])
AM_CONDITIONAL(HAVE_GALLIUM_EXTRA_HUD, test "x$enable_gallium_extra_hud" = xyes)
if test "x$enable_gallium_extra_hud" = xyes ; then
    DEFINES="${DEFINES} -DHAVE_GALLIUM_EXTRA_HUD=1"
fi

#TODO: no pkgconfig .pc available for libsensors.
#PKG_CHECK_MODULES([LIBSENSORS], [libsensors >= $LIBSENSORS_REQUIRED], [enable_lmsensors=yes], [enable_lmsensors=no])
AC_ARG_ENABLE([lmsensors],
    [AS_HELP_STRING([--enable-lmsensors],
        [enable HUD lmsensor support @<:@default=disabled@:>@])],
    [enable_lmsensors="$enableval"],
    [enable_lmsensors=no])
AM_CONDITIONAL(HAVE_LIBSENSORS, test "x$enable_lmsensors" = xyes)
if test "x$enable_lmsensors" = xyes ; then
    DEFINES="${DEFINES} -DHAVE_LIBSENSORS=1"
    LIBSENSORS_LIBS="-lsensors"
else
    LIBSENSORS_LIBS=""
fi
AC_SUBST(LIBSENSORS_LIBS)

case "$host_os" in
linux*)
    dri3_default=yes
    ;;
*)
    dri3_default=no
    ;;
esac

if test "x$enable_dri" = xno; then
    dri3_default=no
fi

AC_ARG_ENABLE([dri3],
    [AS_HELP_STRING([--enable-dri3],
        [enable DRI3 @<:@default=auto@:>@])],
    [enable_dri3="$enableval"],
    [enable_dri3="$dri3_default"])
AC_ARG_ENABLE([glx],
    [AS_HELP_STRING([--enable-glx@<:@=dri|xlib|gallium-xlib@:>@],
        [enable the GLX library and choose an implementation @<:@default=auto@:>@])],
    [enable_glx="$enableval"],
    [enable_glx=yes])
AC_ARG_ENABLE([osmesa],
    [AS_HELP_STRING([--enable-osmesa],
        [enable OSMesa library @<:@default=disabled@:>@])],
    [enable_osmesa="$enableval"],
    [enable_osmesa=no])
AC_ARG_ENABLE([gallium-osmesa],
    [AS_HELP_STRING([--enable-gallium-osmesa],
        [enable Gallium implementation of the OSMesa library @<:@default=disabled@:>@])],
    [enable_gallium_osmesa="$enableval"],
    [enable_gallium_osmesa=no])
AC_ARG_ENABLE([egl],
    [AS_HELP_STRING([--disable-egl],
        [disable EGL library @<:@default=enabled@:>@])],
    [enable_egl="$enableval"],
    [enable_egl=yes])

AC_ARG_ENABLE([xa],
    [AS_HELP_STRING([--enable-xa],
        [enable build of the XA X Acceleration API @<:@default=disabled@:>@])],
    [enable_xa="$enableval"],
    [enable_xa=no])
AC_ARG_ENABLE([gbm],
   [AS_HELP_STRING([--enable-gbm],
         [enable gbm library @<:@default=yes except cygwin and macOS@:>@])],
   [enable_gbm="$enableval"],
   [case "$host_os" in
       cygwin* | darwin*)
          enable_gbm=no
          ;;
       *)
          enable_gbm=yes
          ;;
    esac])
AC_ARG_ENABLE([nine],
    [AS_HELP_STRING([--enable-nine],
        [enable build of the nine Direct3D9 API @<:@default=no@:>@])],
    [enable_nine="$enableval"],
    [enable_nine=no])

AC_ARG_ENABLE([xvmc],
   [AS_HELP_STRING([--enable-xvmc],
         [enable xvmc library @<:@default=auto@:>@])],
   [enable_xvmc="$enableval"],
   [enable_xvmc=auto])
AC_ARG_ENABLE([vdpau],
   [AS_HELP_STRING([--enable-vdpau],
         [enable vdpau library @<:@default=auto@:>@])],
   [enable_vdpau="$enableval"],
   [enable_vdpau=auto])
AC_ARG_ENABLE([omx],
   [AS_HELP_STRING([--enable-omx],
         [DEPRECATED: Use --enable-omx-bellagio or --enable-omx-tizonia instead @<:@default=auto@:>@])],
   [AC_MSG_ERROR([--enable-omx is deprecated. Use --enable-omx-bellagio or --enable-omx-tizonia instead.])],
   [])
AC_ARG_ENABLE([omx-bellagio],
   [AS_HELP_STRING([--enable-omx-bellagio],
         [enable OpenMAX Bellagio library @<:@default=disabled@:>@])],
   [enable_omx_bellagio="$enableval"],
   [enable_omx_bellagio=no])
AC_ARG_ENABLE([omx-tizonia],
   [AS_HELP_STRING([--enable-omx-tizonia],
         [enable OpenMAX Tizonia library @<:@default=disabled@:>@])],
   [enable_omx_tizonia="$enableval"],
   [enable_omx_tizonia=no])
AC_ARG_ENABLE([va],
   [AS_HELP_STRING([--enable-va],
         [enable va library @<:@default=auto@:>@])],
   [enable_va="$enableval"],
   [enable_va=auto])
AC_ARG_ENABLE([opencl],
   [AS_HELP_STRING([--enable-opencl],
         [enable OpenCL library @<:@default=disabled@:>@])],
   [enable_opencl="$enableval"],
   [enable_opencl=no])
AC_ARG_ENABLE([opencl_icd],
   [AS_HELP_STRING([--enable-opencl-icd],
          [Build an OpenCL ICD library to be loaded by an ICD implementation
           @<:@default=enabled@:>@])],
    [enable_opencl_icd="$enableval"],
    [enable_opencl_icd=yes])

AC_ARG_ENABLE([gallium-tests],
    [AS_HELP_STRING([--enable-gallium-tests],
        [Enable optional Gallium tests) @<:@default=disabled@:>@])],
    [enable_gallium_tests="$enableval"],
    [enable_gallium_tests=no])

# Option for Gallium drivers

# Keep this in sync with the --with-gallium-drivers help string default value
GALLIUM_DRIVERS_DEFAULT="r300,r600,svga,swrast"

AC_ARG_WITH([gallium-drivers],
    [AS_HELP_STRING([--with-gallium-drivers@<:@=DIRS...@:>@],
        [comma delimited Gallium drivers list, e.g.
        "i915,nouveau,r300,r600,radeonsi,freedreno,kmsro,svga,swrast,swr,tegra,v3d,vc4,virgl,etnaviv"
        @<:@default=r300,r600,svga,swrast@:>@])],
    [with_gallium_drivers="$withval"],
    [with_gallium_drivers="$GALLIUM_DRIVERS_DEFAULT"])

# Doing '--without-gallium-drivers' will set this variable to 'no'.  Clear it
# here so that the script doesn't choke on an unknown driver name later.
case "$with_gallium_drivers" in
    yes) with_gallium_drivers="$GALLIUM_DRIVERS_DEFAULT" ;;
    no) with_gallium_drivers='' ;;
esac

if test "x$enable_opengl" = xno -a \
        "x$enable_gles1" = xno -a \
        "x$enable_gles2" = xno -a \
        "x$enable_nine" = xno -a \
        "x$enable_xa" = xno -a \
        "x$enable_xvmc" = xno -a \
        "x$enable_vdpau" = xno -a \
        "x$enable_omx_bellagio" = xno -a \
        "x$enable_omx_tizonia" = xno -a \
        "x$enable_va" = xno -a \
        "x$enable_opencl" = xno; then
    AC_MSG_ERROR([at least one API should be enabled])
fi

if test "x$enable_omx_bellagio" = xyes -a \
        "x$enable_omx_tizonia" = xyes; then
   AC_MSG_ERROR([Can't enable both bellagio and tizonia at same time])
fi

# Building OpenGL ES1 and/or ES2 without OpenGL is not supported on mesa 9.0.x
if test "x$enable_opengl" = xno -a \
        "x$enable_gles1" = xyes; then
    AC_MSG_ERROR([Building OpenGL ES1 without OpenGL is not supported])
fi

if test "x$enable_opengl" = xno -a \
        "x$enable_gles2" = xyes; then
    AC_MSG_ERROR([Building OpenGL ES2 without OpenGL is not supported])
fi

AM_CONDITIONAL(HAVE_OPENGL, test "x$enable_opengl" = xyes)
AM_CONDITIONAL(HAVE_OPENGL_ES1, test "x$enable_gles1" = xyes)
AM_CONDITIONAL(HAVE_OPENGL_ES2, test "x$enable_gles2" = xyes)
AM_CONDITIONAL(NEED_OPENGL_COMMON, test "x$enable_opengl" = xyes -o \
                                        "x$enable_gles1" = xyes -o \
                                        "x$enable_gles2" = xyes)
AM_CONDITIONAL(NEED_KHRPLATFORM, test "x$enable_egl" = xyes -o \
                                      "x$enable_opengl" = xyes -o \
                                      "x$enable_gles1" = xyes -o \
                                      "x$enable_gles2" = xyes)

# Validate GLX options
if test "x$enable_glx" = xyes; then
    if test "x$enable_dri" = xyes; then
        enable_glx=dri
    elif test -n "$with_gallium_drivers"; then
        enable_glx=gallium-xlib
    else
        enable_glx=xlib
    fi
fi
case "x$enable_glx" in
xdri | xxlib | xgallium-xlib)
    # GLX requires OpenGL
    if test "x$enable_opengl" = xno; then
        AC_MSG_ERROR([GLX cannot be built without OpenGL])
    fi

    # Check individual dependencies
    case "x$enable_glx" in
    xdri)
        if test "x$enable_dri" = xno; then
            AC_MSG_ERROR([DRI-based GLX requires DRI to be enabled])
        fi
        ;;
    xxlib)
        if test "x$enable_dri" = xyes; then
            AC_MSG_ERROR([Xlib-based GLX cannot be built with DRI enabled])
        fi
        ;;
    xgallium-xlib )
        if test "x$enable_dri" = xyes; then
            AC_MSG_ERROR([Xlib-based (Gallium) GLX cannot be built with DRI enabled])
        fi
        if test -z "$with_gallium_drivers"; then
            AC_MSG_ERROR([Xlib-based (Gallium) GLX cannot be built without Gallium enabled])
        fi
        ;;
    esac
    ;;
xno)
    ;;
*)
    AC_MSG_ERROR([Illegal value for --enable-glx: $enable_glx])
    ;;
esac

AM_CONDITIONAL(HAVE_GLX, test "x$enable_glx" != xno)
AM_CONDITIONAL(HAVE_DRI_GLX, test "x$enable_glx" = xdri)
AM_CONDITIONAL(HAVE_XLIB_GLX, test "x$enable_glx" = xxlib)
AM_CONDITIONAL(HAVE_GALLIUM_XLIB_GLX, test "x$enable_glx" = xgallium-xlib)

DEFAULT_GL_LIB_NAME=GL

dnl
dnl Libglvnd configuration
dnl
AC_ARG_ENABLE([libglvnd],
    [AS_HELP_STRING([--enable-libglvnd],
        [Build GLX and EGL for libglvnd @<:@default=disabled@:>@])],
    [enable_libglvnd="$enableval"],
    [enable_libglvnd=no])
AM_CONDITIONAL(USE_LIBGLVND, test "x$enable_libglvnd" = xyes)

if test "x$enable_libglvnd" = xyes ; then
    case "x$enable_glx" in
    xxlib | xgallium-xlib )
        AC_MSG_ERROR([cannot build libgvnd when Xlib-GLX or Gallium-Xlib-GLX is enabled])
        ;;
    esac

    PKG_CHECK_MODULES([GLVND], libglvnd >= 0.2.0)
    LIBGLVND_DATADIR=`$PKG_CONFIG --variable=datadir libglvnd`
    AC_SUBST([LIBGLVND_DATADIR])

    DEFINES="${DEFINES} -DUSE_LIBGLVND=1"
    DEFAULT_GL_LIB_NAME=GLX_mesa

    if test "x$enable_glx" = xno -a "x$enable_egl" = xno; then
        AC_MSG_ERROR([cannot build libglvnd without GLX or EGL])
    fi
fi

AC_ARG_WITH([gl-lib-name],
  [AS_HELP_STRING([--with-gl-lib-name@<:@=NAME@:>@],
    [specify GL library name @<:@default=GL@:>@])],
  [AC_MSG_ERROR([--with-gl-lib-name is no longer supported. Rename the library manually if needed.])],
  [])
AC_ARG_WITH([osmesa-lib-name],
  [AS_HELP_STRING([--with-osmesa-lib-name@<:@=NAME@:>@],
    [specify OSMesa library name @<:@default=OSMesa@:>@])],
  [AC_MSG_ERROR([--with-osmesa-lib-name is no longer supported. Rename the library manually if needed.])],
  [])
GL_LIB="$DEFAULT_GL_LIB_NAME"
OSMESA_LIB=OSMesa

dnl
dnl Mangled Mesa support
dnl
AC_ARG_ENABLE([mangling],
  [AS_HELP_STRING([--enable-mangling],
    [enable mangled symbols and library name @<:@default=disabled@:>@])],
  [enable_mangling="${enableval}"],
  [enable_mangling=no]
)
if test "x${enable_mangling}" = "xyes" ; then
  if test "x$enable_libglvnd" = xyes; then
    AC_MSG_ERROR([Conflicting options --enable-mangling and --enable-libglvnd.])
  fi
  DEFINES="${DEFINES} -DUSE_MGL_NAMESPACE"
  GL_LIB="Mangled${GL_LIB}"
  OSMESA_LIB="Mangled${OSMESA_LIB}"
fi
AC_SUBST([GL_LIB])
AC_SUBST([OSMESA_LIB])

dnl HACK when building glx + glvnd we ship gl.pc, despite that glvnd should do it
dnl Thus we need to use GL as a DSO name.
if test "x$enable_libglvnd" = xyes -a "x$enable_glx" != xno; then
  GL_PKGCONF_LIB="GL"
else
  GL_PKGCONF_LIB="$GL_LIB"
fi
AC_SUBST([GL_PKGCONF_LIB])

# Check for libdrm
PKG_CHECK_MODULES([LIBDRM], [libdrm >= $LIBDRM_REQUIRED],
                  [have_libdrm=yes], [have_libdrm=no])
if test "x$have_libdrm" = xyes; then
    DEFINES="$DEFINES -DHAVE_LIBDRM"
fi

require_libdrm() {
    if test "x$have_libdrm" != xyes; then
       AC_MSG_ERROR([$1 requires libdrm >= $LIBDRM_REQUIRED])
    fi
}


# Select which platform-dependent DRI code gets built
case "$host_os" in
darwin*)
    dri_platform='apple' ;;
cygwin*)
    dri_platform='windows' ;;
gnu*)
    dri_platform='none' ;;
*)
    dri_platform='drm' ;;
esac

if test "x$enable_dri" = xyes -a "x$dri_platform" = xdrm -a "x$have_libdrm" = xyes; then
    have_drisw_kms='yes'
fi

AM_CONDITIONAL(HAVE_DRICOMMON, test "x$enable_dri" = xyes )
AM_CONDITIONAL(HAVE_DRISW, test "x$enable_dri" = xyes )
AM_CONDITIONAL(HAVE_DRISW_KMS, test "x$have_drisw_kms" = xyes )
AM_CONDITIONAL(HAVE_DRI2, test "x$enable_dri" = xyes -a "x$dri_platform" = xdrm -a "x$have_libdrm" = xyes )
AM_CONDITIONAL(HAVE_DRI3, test "x$enable_dri3" = xyes -a "x$dri_platform" = xdrm -a "x$have_libdrm" = xyes )
AM_CONDITIONAL(HAVE_APPLEDRI, test "x$enable_dri" = xyes -a "x$dri_platform" = xapple )
AM_CONDITIONAL(HAVE_LMSENSORS, test "x$enable_lmsensors" = xyes )
AM_CONDITIONAL(HAVE_GALLIUM_EXTRA_HUD, test "x$enable_gallium_extra_hud" = xyes )
AM_CONDITIONAL(HAVE_WINDOWSDRI, test "x$enable_dri" = xyes -a "x$dri_platform" = xwindows )
AM_CONDITIONAL(HAVE_XLEASE, test "x$have_xlease" = xyes )

AC_ARG_ENABLE([shared-glapi],
    [AS_HELP_STRING([--enable-shared-glapi],
        [Enable shared glapi for OpenGL @<:@default=enabled@:>@])],
    [enable_shared_glapi="$enableval"],
    [enable_shared_glapi=yes])

case "x$enable_opengl$enable_gles1$enable_gles2" in
x*yes*yes*)
    if test "x$enable_shared_glapi" = xno; then
        AC_MSG_ERROR([shared GLAPI required when building two or more of
                      the following APIs - opengl, gles1 gles2])
    fi
    ;;
esac

AM_CONDITIONAL(HAVE_SHARED_GLAPI, test "x$enable_shared_glapi" = xyes)

# Build the pipe-drivers as separate libraries/modules.
# Do not touch this unless you know what you are doing.
# XXX: Expose via configure option ?
enable_shared_pipe_drivers=no

dnl
dnl Driver specific build directories
dnl

if test "x$enable_gallium_osmesa" = xyes; then
    if ! echo "$with_gallium_drivers" | grep -q 'swrast'; then
        AC_MSG_ERROR([gallium_osmesa requires the gallium swrast driver])
    fi
    if test "x$enable_osmesa" = xyes; then
        AC_MSG_ERROR([Cannot enable both classic and Gallium OSMesa implementations])
    fi
fi

require_dri_shared_libs_and_glapi() {
    if test "x$enable_static" = xyes; then
        AC_MSG_ERROR([$1 cannot be build as static library])
    fi

    if test "x$enable_dri" != xyes; then
        # There is only a single backend which won't be build/used otherwise.
        # XXX: Revisit this as the egl/haiku is a thing.
        AC_MSG_ERROR([$1 requires --enable-dri])
    fi

    if test "x$enable_shared_glapi" != xyes; then
        AC_MSG_ERROR([$1 requires --enable-shared-glapi])
    fi
}

if test "x$enable_dri" = xyes; then
    require_dri_shared_libs_and_glapi "DRI"

    # not a hard requirement as swrast does not depend on it
    if test "x$have_libdrm" = xyes; then
        DRI_PC_REQ_PRIV="libdrm >= $LIBDRM_REQUIRED"
    fi
fi

AC_ARG_ENABLE([driglx-direct],
    [AS_HELP_STRING([--disable-driglx-direct],
        [disable direct rendering in GLX and EGL for DRI \
            @<:@default=enabled@:>@])],
    [driglx_direct="$enableval"],
    [driglx_direct="yes"])

dnl
dnl libGL configuration per driver
dnl
if test "x$enable_glx" != xno; then
    PKG_CHECK_MODULES([GLPROTO], [glproto >= $GLPROTO_REQUIRED])
fi
case "x$enable_glx" in
xxlib | xgallium-xlib)
    # Xlib-based GLX
    dri_modules="x11 xext xcb"
    PKG_CHECK_MODULES([XLIBGL], [$dri_modules])
    GL_PC_REQ_PRIV="$GL_PC_REQ_PRIV $dri_modules"
    X11_INCLUDES="$X11_INCLUDES $XLIBGL_CFLAGS"
    GL_LIB_DEPS="$XLIBGL_LIBS"
    GL_LIB_DEPS="$GL_LIB_DEPS $SELINUX_LIBS -lm $PTHREAD_LIBS $DLOPEN_LIBS"
    GL_PC_LIB_PRIV="$GL_PC_LIB_PRIV $SELINUX_LIBS -lm $PTHREAD_LIBS"
    ;;
xdri)
    # DRI-based GLX

    require_dri_shared_libs_and_glapi "GLX"

    # find the DRI deps for libGL
    dri_modules="x11 xext xdamage >= $XDAMAGE_REQUIRED xfixes x11-xcb xcb xcb-glx >= $XCBGLX_REQUIRED"

    if test x"$driglx_direct" = xyes; then
        if test x"$dri_platform" = xdrm ; then
            DEFINES="$DEFINES -DGLX_USE_DRM"
            require_libdrm "Direct rendering"

            PKG_CHECK_MODULES([DRI2PROTO], [dri2proto >= $DRI2PROTO_REQUIRED])
            GL_PC_REQ_PRIV="$GL_PC_REQ_PRIV libdrm >= $LIBDRM_REQUIRED"

            if test x"$enable_dri" = xyes; then
               dri_modules="$dri_modules xcb-dri2 >= $XCBDRI2_REQUIRED"
            fi

            dri_modules="$dri_modules xxf86vm"
        fi
        if test x"$dri_platform" = xapple ; then
            DEFINES="$DEFINES -DGLX_USE_APPLEGL"
        fi
        if test x"$dri_platform" = xwindows ; then
            DEFINES="$DEFINES -DGLX_USE_WINDOWSGL"
        fi
    fi

    PKG_CHECK_MODULES([DRIGL], [$dri_modules])
    GL_PC_REQ_PRIV="$GL_PC_REQ_PRIV $dri_modules"
    X11_INCLUDES="$X11_INCLUDES $DRIGL_CFLAGS"
    GL_LIB_DEPS="$DRIGL_LIBS"

    # need DRM libs, $PTHREAD_LIBS, etc.
    GL_LIB_DEPS="$GL_LIB_DEPS $LIBDRM_LIBS -lm $PTHREAD_LIBS $DLOPEN_LIBS"
    GL_PC_LIB_PRIV="-lm $PTHREAD_LIBS $DLOPEN_LIBS"
    ;;
esac

GLESv1_CM_LIB_DEPS="$LIBDRM_LIBS -lm $PTHREAD_LIBS $DLOPEN_LIBS"
GLESv1_CM_PC_LIB_PRIV="-lm $PTHREAD_LIBS $DLOPEN_LIBS"
GLESv2_LIB_DEPS="$LIBDRM_LIBS -lm $PTHREAD_LIBS $DLOPEN_LIBS"
GLESv2_PC_LIB_PRIV="-lm $PTHREAD_LIBS $DLOPEN_LIBS"

AC_SUBST([X11_INCLUDES])
AC_SUBST([GL_LIB_DEPS])
AC_SUBST([GL_PC_REQ_PRIV])
AC_SUBST([GL_PC_LIB_PRIV])
AC_SUBST([GL_PC_CFLAGS])
AC_SUBST([DRI_PC_REQ_PRIV])
AC_SUBST([GLESv1_CM_LIB_DEPS])
AC_SUBST([GLESv1_CM_PC_LIB_PRIV])
AC_SUBST([GLESv2_LIB_DEPS])
AC_SUBST([GLESv2_PC_LIB_PRIV])

dnl
dnl More GLX setup
dnl
case "x$enable_glx" in
xxlib | xgallium-xlib)
    DEFINES="$DEFINES -DUSE_XSHM"
    ;;
xdri)
    DEFINES="$DEFINES -DGLX_INDIRECT_RENDERING"
    if test "x$driglx_direct" = xyes; then
        DEFINES="$DEFINES -DGLX_DIRECT_RENDERING"
    fi
    ;;
esac

dnl
dnl TLS detection
dnl

AC_ARG_ENABLE([glx-tls],
    [AS_HELP_STRING([--enable-glx-tls],
        [enable TLS support in GLX @<:@default=enabled@:>@])],
    [GLX_USE_TLS="$enableval"],
    [GLX_USE_TLS=yes])
AC_SUBST(GLX_TLS, ${GLX_USE_TLS})

if test "x$GLX_USE_TLS" = xyes; then
    DEFINES="$DEFINES -DGLX_USE_TLS"
fi

dnl Read-only text section on x86 hardened platforms
AC_ARG_ENABLE([glx-read-only-text],
    [AS_HELP_STRING([--enable-glx-read-only-text],
        [Disable writable .text section on x86 (decreases performance) @<:@default=disabled@:>@])],
    [enable_glx_read_only_text="$enableval"],
    [enable_glx_read_only_text=no])
if test "x$enable_glx_read_only_text" = xyes; then
    DEFINES="$DEFINES -DGLX_X86_READONLY_TEXT"
fi

dnl
dnl DEPRECATED: EGL Platforms configuration
dnl
AC_ARG_WITH([egl-platforms],
    [AS_HELP_STRING([--with-egl-platforms@<:@=DIRS...@:>@],
        [DEPRECATED: use --with-platforms instead@<:@default=auto@:>@])],
    [with_egl_platforms="$withval"],
    [with_egl_platforms=auto])

if test "x$with_egl_platforms" = xauto; then
    with_egl_platforms="x11,surfaceless"
    if test "x$enable_gbm" = xyes; then
        with_egl_platforms="$with_egl_platforms,drm"
    fi
else
    AC_MSG_WARN([--with-egl-platforms is deprecated. Use --with-platforms instead.])
fi

dnl
dnl Platforms configuration
dnl
AC_ARG_WITH([platforms],
    [AS_HELP_STRING([--with-platforms@<:@=DIRS...@:>@],
        [comma delimited native platforms libEGL/Vulkan/other supports, e.g.
        "x11,drm,wayland,surfaceless..." @<:@default=auto@:>@])],
    [with_platforms="$withval"],
    [with_platforms=auto])

# Reuse the autodetection rather than duplicating it.
if test "x$with_platforms" = xauto; then
    with_platforms=$with_egl_platforms
fi

# Do per platform setups and checks
platforms=`IFS=', '; echo $with_platforms`
for plat in $platforms; do
    case "$plat" in
    wayland)

        PKG_CHECK_MODULES([WAYLAND_CLIENT], [wayland-client >= $WAYLAND_REQUIRED])
        PKG_CHECK_MODULES([WAYLAND_SERVER], [wayland-server >= $WAYLAND_REQUIRED])
        PKG_CHECK_MODULES([WAYLAND_PROTOCOLS], [wayland-protocols >= $WAYLAND_PROTOCOLS_REQUIRED])
        if test "x$enable_egl" = xyes; then
          PKG_CHECK_MODULES([WAYLAND_EGL], [wayland-egl-backend >= $WAYLAND_EGL_BACKEND_REQUIRED])
        fi
        WAYLAND_PROTOCOLS_DATADIR=`$PKG_CONFIG --variable=pkgdatadir wayland-protocols`

        PKG_CHECK_MODULES([WAYLAND_SCANNER], [wayland-scanner],
                          WAYLAND_SCANNER=`$PKG_CONFIG --variable=wayland_scanner wayland-scanner`,
                          WAYLAND_SCANNER='')
        PKG_CHECK_EXISTS([wayland-scanner >= 1.15],
                          AC_SUBST(SCANNER_ARG, 'private-code'),
                          AC_SUBST(SCANNER_ARG, 'code'))

        if test "x$WAYLAND_SCANNER" = x; then
            AC_PATH_PROG([WAYLAND_SCANNER], [wayland-scanner], [:])
        fi

        if test "x$WAYLAND_SCANNER" = "x:"; then
                AC_MSG_ERROR([wayland-scanner is needed to compile the wayland platform])
        fi
        DEFINES="$DEFINES -DHAVE_WAYLAND_PLATFORM -DWL_HIDE_DEPRECATED"
        ;;

    x11)
        PKG_CHECK_MODULES([XCB_DRI2], [x11-xcb xcb xcb-dri2 >= $XCBDRI2_REQUIRED xcb-xfixes])
        DEFINES="$DEFINES -DHAVE_X11_PLATFORM"
        ;;

    drm)
        test "x$enable_egl" = "xyes" &&
        test "x$enable_gbm" = "xno" &&
                AC_MSG_ERROR([EGL platform drm needs gbm])
        DEFINES="$DEFINES -DHAVE_DRM_PLATFORM"
        ;;

    surfaceless)
        DEFINES="$DEFINES -DHAVE_SURFACELESS_PLATFORM"
        ;;

    android)
        PKG_CHECK_MODULES([ANDROID], [cutils hardware sync])
        if test -n "$with_gallium_drivers"; then
            PKG_CHECK_MODULES([BACKTRACE], [backtrace])
        fi
        DEFINES="$DEFINES -DHAVE_ANDROID_PLATFORM"
        ;;

    *)
        AC_MSG_ERROR([platform '$plat' does not exist])
        ;;
    esac

    case "$plat" in
    wayland|drm|surfaceless)
        require_libdrm "Platform $plat"
        ;;
    esac
done
AC_SUBST([WAYLAND_PROTOCOLS_DATADIR])

if test "x$enable_glx" != xno; then
    if ! echo "$platforms" | grep -q 'x11'; then
        AC_MSG_ERROR([Building GLX without the x11 platform is not supported])
    fi
fi

if test x"$enable_dri3" = xyes; then
    DEFINES="$DEFINES -DHAVE_DRI3"

    dri3_modules="x11-xcb xcb >= $XCB_REQUIRED xcb-dri3 xcb-xfixes xcb-present xcb-sync xshmfence >= $XSHMFENCE_REQUIRED"
    PKG_CHECK_MODULES([XCB_DRI3], [$dri3_modules])
    dri3_modifier_modules="xcb-dri3 >= $XCBDRI3_MODIFIERS_REQUIRED xcb-present >= $XCBPRESENT_MODIFIERS_REQUIRED"
    PKG_CHECK_MODULES([XCB_DRI3_MODIFIERS], [$dri3_modifier_modules], [have_dri3_modifiers=yes], [have_dri3_modifiers=no])

    if test "x$have_dri3_modifiers" == xyes; then
        DEFINES="$DEFINES -DHAVE_DRI3_MODIFIERS"
    fi
fi


if echo "$platforms" | grep -q 'x11' && echo "$platforms" | grep -q 'drm'; then
    have_xlease=yes
else
    have_xlease=no
fi

if test x"$have_xlease" = xyes; then
    randr_modules="x11-xcb xcb-randr"
    PKG_CHECK_MODULES([XCB_RANDR], [$randr_modules])
    xlib_randr_modules="xrandr"
    PKG_CHECK_MODULES([XLIB_RANDR], [$xlib_randr_modules])
fi

AM_CONDITIONAL(HAVE_PLATFORM_X11, echo "$platforms" | grep -q 'x11')
AM_CONDITIONAL(HAVE_PLATFORM_WAYLAND, echo "$platforms" | grep -q 'wayland')
AM_CONDITIONAL(HAVE_PLATFORM_DRM, echo "$platforms" | grep -q 'drm')
AM_CONDITIONAL(HAVE_PLATFORM_SURFACELESS, echo "$platforms" | grep -q 'surfaceless')
AM_CONDITIONAL(HAVE_PLATFORM_ANDROID, echo "$platforms" | grep -q 'android')

AC_ARG_ENABLE(xlib-lease,
    [AS_HELP_STRING([--enable-xlib-lease]
                    [enable VK_acquire_xlib_display using X leases])],
    [enable_xlib_lease=$enableval], [enable_xlib_lease=auto])
case "x$enable_xlib_lease" in
xyes)
    ;;
xno)
    ;;
*)
    if echo "$platforms" | grep -q 'x11' && echo "$platforms" | grep -q 'drm'; then
        enable_xlib_lease=yes
    else
        enable_xlib_lease=no
    fi
esac

AM_CONDITIONAL(HAVE_XLIB_LEASE, test "x$enable_xlib_lease" = xyes)

dnl
dnl More DRI setup
dnl
dnl Directory for DRI drivers
AC_ARG_WITH([dri-driverdir],
    [AS_HELP_STRING([--with-dri-driverdir=DIR],
        [directory for the DRI drivers @<:@${libdir}/dri@:>@])],
    [DRI_DRIVER_INSTALL_DIR="$withval"],
    [DRI_DRIVER_INSTALL_DIR='${libdir}/dri'])
AC_SUBST([DRI_DRIVER_INSTALL_DIR])
dnl Extra search path for DRI drivers
AC_ARG_WITH([dri-searchpath],
    [AS_HELP_STRING([--with-dri-searchpath=DIRS...],
        [semicolon delimited DRI driver search directories @<:@${libdir}/dri@:>@])],
    [DRI_DRIVER_SEARCH_DIR="$withval"],
    [DRI_DRIVER_SEARCH_DIR='${DRI_DRIVER_INSTALL_DIR}'])
AC_SUBST([DRI_DRIVER_SEARCH_DIR])
dnl Which drivers to build - default is chosen by platform
AC_ARG_WITH([dri-drivers],
    [AS_HELP_STRING([--with-dri-drivers@<:@=DIRS...@:>@],
        [comma delimited classic DRI drivers list, e.g.
        "i915,i965,nouveau,radeon,r200,swrast" @<:@default=auto@:>@])],
    [with_dri_drivers="$withval"],
    [with_dri_drivers=auto])

if test "x$with_dri_drivers" = xauto; then
    if test "x$enable_opengl" = xyes -a "x$enable_dri" = xyes; then
        with_dri_drivers="yes"
    else
        with_dri_drivers="no"
    fi
fi
if test "x$with_dri_drivers" = xno; then
    with_dri_drivers=''
fi

# Check for expat
PKG_CHECK_MODULES([EXPAT], [expat],,
    [PKG_CHECK_MODULES([EXPAT], [expat21])]
)

dnl If $with_dri_drivers is yes, drivers will be added through
dnl platform checks. Set DEFINES and LIB_DEPS
if test "x$enable_dri" = xyes; then
    # Platform specific settings and drivers to build
    case "$host_os" in
    linux*)
        case "$host_cpu" in
        powerpc* | sparc*)
            # Build only the drivers for cards that exist on PowerPC/sparc
            if test "x$with_dri_drivers" = "xyes"; then
                with_dri_drivers="r200 radeon swrast"
            fi
            ;;
        esac
        ;;
    cygwin*)
        if test "x$with_dri_drivers" = "xyes"; then
            with_dri_drivers="swrast"
        fi
        ;;
    darwin*)
        DEFINES="$DEFINES -DBUILDING_MESA"
        if test "x$with_dri_drivers" = "xyes"; then
            with_dri_drivers="swrast"
        fi
        ;;
    esac

    # default drivers
    if test "x$with_dri_drivers" = "xyes"; then
        with_dri_drivers="i915 i965 nouveau r200 radeon swrast"
    fi

    # put all the necessary libs together
    DRI_LIB_DEPS="$DRI_LIB_DEPS $SELINUX_LIBS $LIBDRM_LIBS $EXPAT_LIBS -lm $PTHREAD_LIBS $DLOPEN_LIBS"
fi

AC_SUBST([DRI_LIB_DEPS])

DRI_DIRS=''
dnl Duplicates in DRI_DIRS are removed by sorting it at the end of this block
if test -n "$with_dri_drivers"; then
    if test "x$enable_opengl" != xyes; then
        AC_MSG_ERROR([--with-dri-drivers requires OpenGL])
    fi

    dri_drivers=`IFS=', '; echo $with_dri_drivers`
    for driver in $dri_drivers; do
        DRI_DIRS="$DRI_DIRS $driver"
        case "x$driver" in
        xi915)
            require_libdrm "i915"
            HAVE_I915_DRI=yes
            PKG_CHECK_MODULES([I915], [libdrm >= $LIBDRM_INTEL_REQUIRED libdrm_intel >= $LIBDRM_INTEL_REQUIRED])
            ;;
        xi965)
            require_libdrm "i965"
            HAVE_I965_DRI=yes
            ;;
        xnouveau)
            require_libdrm "nouveau"
            HAVE_NOUVEAU_DRI=yes
            PKG_CHECK_MODULES([NVVIEUX], [libdrm >= $LIBDRM_NVVIEUX_REQUIRED libdrm_nouveau >= $LIBDRM_NVVIEUX_REQUIRED])
            ;;
        xradeon)
            require_libdrm "radeon"
            HAVE_RADEON_DRI=yes;
            PKG_CHECK_MODULES([RADEON], [libdrm >= $LIBDRM_RADEON_REQUIRED libdrm_radeon >= $LIBDRM_RADEON_REQUIRED])
            ;;
        xr200)
            require_libdrm "r200"
            HAVE_R200_DRI=yes
            PKG_CHECK_MODULES([RADEON], [libdrm >= $LIBDRM_RADEON_REQUIRED libdrm_radeon >= $LIBDRM_RADEON_REQUIRED])
            ;;
        xswrast)
            HAVE_SWRAST_DRI=yes
            ;;
        *)
            AC_MSG_ERROR([classic DRI driver '$driver' does not exist])
            ;;
        esac
    done
    DRI_DIRS=`echo $DRI_DIRS|tr " " "\n"|sort -u|tr "\n" " "`
fi


dnl
dnl Gallium LLVM
dnl Deprecated: kept for backwards compatibility
dnl
AC_ARG_ENABLE([gallium-llvm],
    [AS_HELP_STRING([--enable-gallium-llvm],
        [DEPRECATED: use --enable-llvm instead])],
    [enable_gallium_llvm="$enableval"],
    [enable_gallium_llvm=auto])

if test "x$enable_gallium_llvm" != xauto; then
   AC_MSG_WARN([The --enable-gallium-llvm option has been deprecated. Use --enable-llvm instead.])
   enable_llvm=$enable_gallium_llvm
fi

dnl
dnl LLVM
dnl
AC_ARG_ENABLE([llvm],
    [AS_HELP_STRING([--enable-llvm],
        [build with LLVM support @<:@default=enabled on x86/x86_64@:>@])],
    [enable_llvm="$enableval"],
    [enable_llvm=auto])

if test "x$enable_llvm" = xauto -a "x$FOUND_LLVM" = xyes; then
    if test "x$FOUND_LLVM" = xyes; then
        case "$host_cpu" in
        i*86|x86_64|amd64) enable_llvm=yes;;
        *) enable_llvm=no;;
        esac
    else
        enable_llvm=no
    fi
fi

if test "x$enable_llvm" = xyes -a "x$FOUND_LLVM" = xno; then
    AC_MSG_ERROR([--enable-llvm selected but llvm-config is not found])
fi

#
# Vulkan driver configuration
#

AC_ARG_WITH([vulkan-drivers],
    [AS_HELP_STRING([--with-vulkan-drivers@<:@=DIRS...@:>@],
        [comma delimited Vulkan drivers list, e.g.
        "intel,radeon"
        @<:@default=no@:>@])],
    [with_vulkan_drivers="$withval"],
    [with_vulkan_drivers="no"])

# Doing '--without-vulkan-drivers' will set this variable to 'no'.  Clear it
# here so that the script doesn't choke on an unknown driver name later.
case "x$with_vulkan_drivers" in
    xyes) with_vulkan_drivers="$VULKAN_DRIVERS_DEFAULT" ;;
    xno) with_vulkan_drivers='' ;;
esac

AC_ARG_WITH([vulkan-icddir],
    [AS_HELP_STRING([--with-vulkan-icddir=DIR],
        [directory for the Vulkan driver icd files @<:@${datarootdir}/vulkan/icd.d@:>@])],
    [VULKAN_ICD_INSTALL_DIR="$withval"],
    [VULKAN_ICD_INSTALL_DIR='${datarootdir}/vulkan/icd.d'])
AC_SUBST([VULKAN_ICD_INSTALL_DIR])

require_x11_dri3() {
    if echo "$platforms" | grep -q 'x11'; then
        if test "x$enable_dri3" != xyes; then
            AC_MSG_ERROR([$1 Vulkan driver requires DRI3 when built with X11])
        fi
    fi
}

if test -n "$with_vulkan_drivers"; then
    if test "x$ac_cv_func_dl_iterate_phdr" = xno; then
        AC_MSG_ERROR([Vulkan drivers require the dl_iterate_phdr function])
    fi

    VULKAN_DRIVERS=`IFS=', '; echo $with_vulkan_drivers`
    for driver in $VULKAN_DRIVERS; do
        case "x$driver" in
        xintel)
            require_libdrm "ANV"
            require_x11_dri3 "ANV"
            HAVE_INTEL_VULKAN=yes
            ;;
        xradeon)
            require_libdrm "radv"
            PKG_CHECK_MODULES([AMDGPU], [libdrm >= $LIBDRM_AMDGPU_REQUIRED libdrm_amdgpu >= $LIBDRM_AMDGPU_REQUIRED])
            radeon_llvm_check $LLVM_REQUIRED_RADV "radv"
            require_x11_dri3 "radv"
            if test "x$acv_mako_found" = xno; then
                AC_MSG_ERROR([Python mako module v$PYTHON_MAKO_REQUIRED or higher not found])
            fi
            HAVE_RADEON_VULKAN=yes
            ;;
        *)
            AC_MSG_ERROR([Vulkan driver '$driver' does not exist])
            ;;
        esac
    done
    VULKAN_DRIVERS=`echo $VULKAN_DRIVERS|tr " " "\n"|sort -u|tr "\n" " "`
fi


DEFINES="$DEFINES -DENABLE_SHADER_CACHE"
AM_CONDITIONAL(NEED_MEGADRIVER, test -n "$DRI_DIRS")
AM_CONDITIONAL(NEED_LIBMESA, test "x$enable_glx" = xxlib -o \
                                  "x$enable_osmesa" = xyes -o \
                                  -n "$DRI_DIRS")

dnl
dnl OSMesa configuration
dnl

dnl Configure the channel bits for OSMesa (libOSMesa, libOSMesa16, ...)
AC_ARG_WITH([osmesa-bits],
    [AS_HELP_STRING([--with-osmesa-bits=BITS],
        [OSMesa channel bits and library name: 8, 16, 32 @<:@default=8@:>@])],
    [osmesa_bits="$withval"],
    [osmesa_bits=8])
if test "x$osmesa_bits" != x8; then
    if test "x$enable_dri" = xyes -o "x$enable_glx" != xno; then
        AC_MSG_WARN([Ignoring OSMesa channel bits because of non-OSMesa driver])
        osmesa_bits=8
    fi
fi
case "x$osmesa_bits" in
x8)
    OSMESA_LIB="${OSMESA_LIB}"
    ;;
x16|x32)
    OSMESA_LIB="${OSMESA_LIB}$osmesa_bits"
    DEFINES="$DEFINES -DCHAN_BITS=$osmesa_bits -DDEFAULT_SOFTWARE_DEPTH_BITS=31"
    ;;
*)
    AC_MSG_ERROR([OSMesa bits '$osmesa_bits' is not a valid option])
    ;;
esac

if test "x$enable_osmesa" = xyes -o "x$enable_gallium_osmesa" = xyes; then
    # only link libraries with osmesa if shared
    if test "$enable_static" = no; then
        OSMESA_LIB_DEPS="-lm $PTHREAD_LIBS $SELINUX_LIBS $DLOPEN_LIBS"
    else
        OSMESA_LIB_DEPS=""
    fi
    OSMESA_PC_LIB_PRIV="-lm $PTHREAD_LIBS $SELINUX_LIBS $DLOPEN_LIBS"
fi

AC_SUBST([OSMESA_LIB_DEPS])
AC_SUBST([OSMESA_PC_REQ])
AC_SUBST([OSMESA_PC_LIB_PRIV])

dnl
dnl gbm configuration
dnl
if test "x$enable_gbm" = xyes; then
    require_dri_shared_libs_and_glapi "gbm"
fi
AM_CONDITIONAL(HAVE_GBM, test "x$enable_gbm" = xyes)
# FINISHME: GBM has a number of dependencies which we should add below
GBM_PC_REQ_PRIV=""
GBM_PC_LIB_PRIV="$DLOPEN_LIBS"
AC_SUBST([GBM_PC_REQ_PRIV])
AC_SUBST([GBM_PC_LIB_PRIV])

dnl
dnl EGL configuration
dnl

if test "x$enable_egl" = xyes; then
    EGL_LIB_DEPS="$DLOPEN_LIBS $SELINUX_LIBS $PTHREAD_LIBS"

    AC_CHECK_FUNC(mincore, [DEFINES="$DEFINES -DHAVE_MINCORE"])

    require_dri_shared_libs_and_glapi "egl"
fi
AM_CONDITIONAL(HAVE_EGL, test "x$enable_egl" = xyes)
AC_SUBST([EGL_LIB_DEPS])

gallium_st="mesa"

dnl
dnl XA configuration
dnl
if test "x$enable_xa" = xyes; then
    if test "x$with_gallium_drivers" = xswrast; then
       AC_MSG_ERROR([
          Building xa requires at least one non swrast gallium driver.
          If you are looking to use libxatracker.so with the VMware driver,
          make sure to include svga in the gallium drivers list, apart from
          enabling XA.
          Example: ./configure --enable-xa --with-gallium-drivers=svga...])
    fi
    gallium_st="$gallium_st xa"
fi
AM_CONDITIONAL(HAVE_ST_XA, test "x$enable_xa" = xyes)

if echo $platforms | grep -q "x11"; then
    have_xvmc_platform=yes
else
    have_xvmc_platform=no
fi

if echo $platforms | grep -q "x11"; then
    have_vdpau_platform=yes
else
    have_vdpau_platform=no
fi

if echo $platforms | egrep -q "x11|drm"; then
    have_omx_platform=yes
else
    have_omx_platform=no
fi

if echo $platforms | egrep -q "x11|drm|wayland"; then
    have_va_platform=yes
else
    have_va_platform=no
fi

dnl
dnl Gallium G3DVL configuration
dnl
if test -n "$with_gallium_drivers" -a "x$with_gallium_drivers" != xswrast; then
    if test "x$enable_xvmc" = xauto -a "x$have_xvmc_platform" = xyes; then
        PKG_CHECK_EXISTS([xvmc >= $XVMC_REQUIRED], [enable_xvmc=yes], [enable_xvmc=no])
    fi

    if test "x$enable_vdpau" = xauto -a "x$have_vdpau_platform" = xyes; then
        PKG_CHECK_EXISTS([vdpau >= $VDPAU_REQUIRED], [enable_vdpau=yes], [enable_vdpau=no])
    fi

    if test "x$enable_omx_bellagio" = xauto -a "x$have_omx_platform" = xyes; then
        PKG_CHECK_EXISTS([libomxil-bellagio >= $LIBOMXIL_BELLAGIO_REQUIRED], [enable_omx_bellagio=yes], [enable_omx_bellagio=no])
    fi

    if test "x$enable_omx_tizonia" = xauto -a "x$have_omx_platform" = xyes; then
       PKG_CHECK_EXISTS([libtizonia >= $LIBOMXIL_TIZONIA_REQUIRED], [enable_omx_tizonia=yes], [enable_omx_tizonia=no])
    fi

    if test "x$enable_va" = xauto -a "x$have_va_platform" = xyes; then
        PKG_CHECK_EXISTS([libva >= $LIBVA_REQUIRED], [enable_va=yes], [enable_va=no])
    fi
fi

if test "x$enable_dri" = xyes -o \
        "x$enable_xvmc" = xyes -o \
        "x$enable_vdpau" = xyes -o \
        "x$enable_omx_bellagio" = xyes -o \
        "x$enable_omx_tizonia" = xyes -o \
        "x$enable_va" = xyes; then
    need_gallium_vl=yes
fi
AM_CONDITIONAL(NEED_GALLIUM_VL, test "x$need_gallium_vl" = xyes)

if test "x$enable_xvmc" = xyes -o \
        "x$enable_vdpau" = xyes -o \
        "x$enable_omx_bellagio" = xyes -o \
        "x$enable_omx_tizonia" = xyes -o \
        "x$enable_va" = xyes; then
    if echo $platforms | grep -q "x11"; then
        PKG_CHECK_MODULES([VL], [x11-xcb xcb xcb-dri2 >= $XCBDRI2_REQUIRED])
    fi
    need_gallium_vl_winsys=yes
fi
AM_CONDITIONAL(NEED_GALLIUM_VL_WINSYS, test "x$need_gallium_vl_winsys" = xyes)

if test "x$enable_xvmc" = xyes; then
    if test "x$have_xvmc_platform" != xyes; then
        AC_MSG_ERROR([XVMC requires the x11 platforms])
    fi
    PKG_CHECK_MODULES([XVMC], [xvmc >= $XVMC_REQUIRED])
    gallium_st="$gallium_st xvmc"
fi
AM_CONDITIONAL(HAVE_ST_XVMC, test "x$enable_xvmc" = xyes)

if test "x$enable_vdpau" = xyes; then
    if test "x$have_vdpau_platform" != xyes; then
        AC_MSG_ERROR([VDPAU requires the x11 platforms])
    fi
    PKG_CHECK_MODULES([VDPAU], [vdpau >= $VDPAU_REQUIRED])
    gallium_st="$gallium_st vdpau"
    DEFINES="$DEFINES -DHAVE_ST_VDPAU"
fi
AM_CONDITIONAL(HAVE_ST_VDPAU, test "x$enable_vdpau" = xyes)

if test "x$enable_omx_bellagio" = xyes; then
    if test "x$have_omx_platform" != xyes; then
        AC_MSG_ERROR([OMX requires at least one of the x11 or drm platforms])
    fi
    PKG_CHECK_MODULES([OMX_BELLAGIO], [libomxil-bellagio >= $LIBOMXIL_BELLAGIO_REQUIRED])
    gallium_st="$gallium_st omx_bellagio"
    AC_DEFINE([ENABLE_ST_OMX_BELLAGIO], 1, [Use Bellagio for OMX IL])
else
    AC_DEFINE([ENABLE_ST_OMX_BELLAGIO], 0)
fi
AM_CONDITIONAL(HAVE_ST_OMX_BELLAGIO, test "x$enable_omx_bellagio" = xyes)

if test "x$enable_omx_tizonia" = xyes; then
    if test "x$have_omx_platform" != xyes; then
        AC_MSG_ERROR([OMX requires at least one of the x11 or drm platforms])
    fi
    PKG_CHECK_MODULES([OMX_TIZONIA],
                      [libtizonia >= $LIBOMXIL_TIZONIA_REQUIRED
                       tizilheaders >= $LIBOMXIL_TIZONIA_REQUIRED
                       libtizplatform >= $LIBOMXIL_TIZONIA_REQUIRED])
    gallium_st="$gallium_st omx_tizonia"
    AC_DEFINE([ENABLE_ST_OMX_TIZONIA], 1, [Use Tizoina for OMX IL])
else
    AC_DEFINE([ENABLE_ST_OMX_TIZONIA], 0)
fi
AM_CONDITIONAL(HAVE_ST_OMX_TIZONIA, test "x$enable_omx_tizonia" = xyes)

if test "x$enable_va" = xyes; then
    if test "x$have_va_platform" != xyes; then
        AC_MSG_ERROR([VA requires at least one of the x11 drm or wayland platforms])
    fi
    PKG_CHECK_MODULES([VA], [libva >= $LIBVA_REQUIRED])
    gallium_st="$gallium_st va"
fi
AM_CONDITIONAL(HAVE_ST_VA, test "x$enable_va" = xyes)

dnl
dnl Nine Direct3D9 configuration
dnl
if test "x$enable_nine" = xyes; then
    if ! echo "$with_gallium_drivers" | grep -q 'swrast'; then
        AC_MSG_ERROR([nine requires the gallium swrast driver])
    fi
    if test "x$with_gallium_drivers" = xswrast; then
        AC_MSG_ERROR([nine requires at least one non-swrast gallium driver])
    fi


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