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dnl Copyright © 2011-2014 Intel Corporation
dnl Copyright © 2011-2014 Emil Velikov <emil.l.velikov@gmail.com>
dnl Copyright © 2007-2010 Dan Nicholson
dnl Copyright © 2010-2014 Marek Olšák <maraeo@gmail.com>
dnl Copyright © 2010-2014 Christian König
dnl Copyright © 2012-2014 Tom Stellard <tstellar@gmail.com>
dnl Copyright © 2009-2012 Jakob Bornecrantz
dnl Copyright © 2009-2014 Jon TURNEY
dnl Copyright © 2011-2012 Benjamin Franzke
dnl Copyright © 2008-2014 David Airlie
dnl Copyright © 2009-2013 Brian Paul
dnl
dnl Permission is hereby granted, free of charge, to any person obtaining a
dnl copy of this software and associated documentation files (the "Software"),
dnl to deal in the Software without restriction, including without limitation
dnl the rights to use, copy, modify, merge, publish, distribute, sublicense,
dnl and/or sell copies of the Software, and to permit persons to whom the
dnl Software is furnished to do so, subject to the following conditions:
dnl
dnl The above copyright notice and this permission notice (including the next
dnl paragraph) shall be included in all copies or substantial portions of the
dnl Software.
dnl
dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
dnl IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
dnl FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
dnl THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
dnl LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
dnl FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
dnl DEALINGS IN THE SOFTWARE.
dnl
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dnl Process this file with autoconf to create configure.
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AC_PREREQ([2.60])
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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.])

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

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# 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
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m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])],
    [AC_SUBST([AM_DEFAULT_VERBOSITY], [1])])
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m4_ifdef([AM_PROG_AR], [AM_PROG_AR])

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dnl Set internal versions
OSMESA_VERSION=8
AC_SUBST([OSMESA_VERSION])
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OPENCL_VERSION=1
AC_SUBST([OPENCL_VERSION])
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# 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.
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LIBDRM_REQUIRED=2.4.75
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LIBDRM_RADEON_REQUIRED=2.4.71
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LIBDRM_AMDGPU_REQUIRED=2.4.93
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LIBDRM_INTEL_REQUIRED=2.4.75
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LIBDRM_NVVIEUX_REQUIRED=2.4.66
LIBDRM_NOUVEAU_REQUIRED=2.4.66
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LIBDRM_FREEDRENO_REQUIRED=2.4.96
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LIBDRM_ETNAVIV_REQUIRED=2.4.89
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LIBDRM_VC4_REQUIRED=2.4.89
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dnl Versions for external dependencies
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DRI2PROTO_REQUIRED=2.8
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GLPROTO_REQUIRED=1.4.14
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LIBOMXIL_BELLAGIO_REQUIRED=0.0
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LIBOMXIL_TIZONIA_REQUIRED=0.10.0
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LIBVA_REQUIRED=0.39.0
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VDPAU_REQUIRED=1.1
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WAYLAND_REQUIRED=1.11
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WAYLAND_EGL_BACKEND_REQUIRED=3
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WAYLAND_PROTOCOLS_REQUIRED=1.8
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XCB_REQUIRED=1.9.3
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XCBDRI2_REQUIRED=1.8
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XCBDRI3_MODIFIERS_REQUIRED=1.13
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XCBGLX_REQUIRED=1.8.1
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XCBPRESENT_MODIFIERS_REQUIRED=1.13
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XDAMAGE_REQUIRED=1.1
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XSHMFENCE_REQUIRED=1.1
XVMC_REQUIRED=1.0.6
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PYTHON_MAKO_REQUIRED=0.8.0
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LIBSENSORS_REQUIRED=4.0.0
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ZLIB_REQUIRED=1.2.3
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dnl LLVM versions
LLVM_REQUIRED_GALLIUM=3.3.0
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LLVM_REQUIRED_OPENCL=3.9.0
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LLVM_REQUIRED_R600=3.9.0
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LLVM_REQUIRED_RADEONSI=6.0.0
LLVM_REQUIRED_RADV=6.0.0
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LLVM_REQUIRED_SWR=6.0.0
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dnl Check for progs
AC_PROG_CPP
AC_PROG_CC
AC_PROG_CXX
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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)])
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AM_PROG_CC_C_O
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AC_PROG_GREP
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AC_PROG_NM
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AM_PROG_AS
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AX_CHECK_GNU_MAKE
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AM_PATH_PYTHON([2.7],, [:])
PYTHON2=$PYTHON
AC_SUBST([PYTHON2])
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AC_PROG_SED
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AC_PROG_MKDIR_P
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AC_SYS_LARGEFILE

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

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

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AX_PROG_BISON([],
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              AS_IF([test ! -f "$srcdir/src/compiler/glsl/glcpp/glcpp-parse.c"],
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                    [AC_MSG_ERROR([bison not found - unable to compile glcpp-parse.y])]))
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AX_PROG_FLEX([],
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             AS_IF([test ! -f "$srcdir/src/compiler/glsl/glcpp/glcpp-lex.c"],
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                   [AC_MSG_ERROR([flex not found - unable to compile glcpp-lex.l])]))
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AC_CHECK_PROG(INDENT, indent, indent, cat)
if test "x$INDENT" != "xcat"; then
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    # 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
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fi

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AX_CHECK_PYTHON_MAKO_MODULE($PYTHON_MAKO_REQUIRED)
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if test "$PYTHON2" = ":"; then
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    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
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fi
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AC_PROG_INSTALL

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

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

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

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    if test $GCC_VERSION_MAJOR -lt 4 -o $GCC_VERSION_MAJOR -eq 4 -a $GCC_VERSION_MINOR -lt 2 ; then
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        AC_MSG_RESULT([no])
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        AC_MSG_ERROR([If using GCC, version 4.2.0 or later is required.])
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    else
        AC_MSG_RESULT([yes])
    fi
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    if test $GCC_VERSION_MAJOR -lt 4 -o $GCC_VERSION_MAJOR -eq 4 -a $GCC_VERSION_MINOR -lt 6 ; then
        USE_GNU99=yes
    fi
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    if test "x$cross_compiling" = xyes; then
        GEN_ASM_OFFSETS=yes
    fi
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fi
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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

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dnl Check for compiler builtins
AX_GCC_BUILTIN([__builtin_bswap32])
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AX_GCC_BUILTIN([__builtin_bswap64])
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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])
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AX_GCC_FUNC_ATTRIBUTE([const])
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AX_GCC_FUNC_ATTRIBUTE([flatten])
AX_GCC_FUNC_ATTRIBUTE([format])
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AX_GCC_FUNC_ATTRIBUTE([malloc])
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AX_GCC_FUNC_ATTRIBUTE([packed])
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AX_GCC_FUNC_ATTRIBUTE([pure])
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AX_GCC_FUNC_ATTRIBUTE([returns_nonnull])
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AX_GCC_FUNC_ATTRIBUTE([unused])
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AX_GCC_FUNC_ATTRIBUTE([visibility])
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AX_GCC_FUNC_ATTRIBUTE([warn_unused_result])
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AX_GCC_FUNC_ATTRIBUTE([weak])
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AX_GCC_FUNC_ATTRIBUTE([alias])
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AX_GCC_FUNC_ATTRIBUTE([noreturn])
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AM_CONDITIONAL([GEN_ASM_OFFSETS], test "x$GEN_ASM_OFFSETS" = xyes)
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dnl Make sure the pkg-config macros are defined
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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.])])
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PKG_PROG_PKG_CONFIG()

dnl LIB_DIR - library basename
LIB_DIR=`echo $libdir | $SED 's%.*/%%'`
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AC_SUBST([LIB_DIR])
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dnl Cache LDFLAGS and CPPFLAGS so we can add to them and restore later
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_SAVE_LDFLAGS="$LDFLAGS"
_SAVE_CPPFLAGS="$CPPFLAGS"

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

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

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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"])
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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="$CFLAGS -Wno-missing-field-initializers"])
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AX_CHECK_COMPILE_FLAG([-Wformat-truncation],                   [CFLAGS="$CFLAGS -Wno-format-truncation"])
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AX_CHECK_COMPILE_FLAG([-fno-math-errno],                       [CFLAGS="$CFLAGS -fno-math-errno"])
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AX_CHECK_COMPILE_FLAG([-fno-trapping-math],                    [CFLAGS="$CFLAGS -fno-trapping-math"])
AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],                   [VISIBILITY_CFLAGS="-fvisibility=hidden"])

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="$CXXFLAGS -fno-trapping-math"])
AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],                   [VISIBILITY_CXXFLAGS="-fvisibility=hidden"])
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AX_CHECK_COMPILE_FLAG([-Wmissing-field-initializers],          [CXXFLAGS="$CXXFLAGS -Wno-missing-field-initializers"])
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AX_CHECK_COMPILE_FLAG([-Wformat-truncation],                   [CXXFLAGS="$CXXFLAGS -Wno-format-truncation"])
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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
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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"])
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AC_LANG_PUSH([C++])
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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"])
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AC_LANG_POP([C++])
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AC_SUBST([MSVC2013_COMPAT_CFLAGS])
AC_SUBST([MSVC2013_COMPAT_CXXFLAGS])

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

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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++])

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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

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

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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
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AC_SUBST([WNO_OVERRIDE_INIT])

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dnl
dnl Optional flags, check for compiler support
dnl
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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
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save_CFLAGS="$CFLAGS"
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CFLAGS="$SSE41_CFLAGS $CFLAGS"
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#include <smmintrin.h>
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int param;
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int main () {
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    __m128i a = _mm_set1_epi32 (param), b = _mm_set1_epi32 (param + 1), c;
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    c = _mm_max_epu32(a, b);
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    return _mm_cvtsi128_si32(c);
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}]])], SSE41_SUPPORTED=1)
CFLAGS="$save_CFLAGS"
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if test "x$SSE41_SUPPORTED" = x1; then
    DEFINES="$DEFINES -DUSE_SSE41"
fi
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AM_CONDITIONAL([SSE41_SUPPORTED], [test x$SSE41_SUPPORTED = x1])
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AC_SUBST([SSE41_CFLAGS], $SSE41_CFLAGS)
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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>
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int main() {
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    struct {
        uint64_t *v;
    } x;
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    return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE) &
           (int)__atomic_add_fetch(x.v, (uint64_t)1, __ATOMIC_ACQ_REL);
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}]])], 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="$LDFLAGS -latomic"
   AC_LINK_IFELSE([AC_LANG_SOURCE([[
   #include <stdint.h>
   int main() {
        struct {
            uint64_t *v;
        } x;
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        return (int)__atomic_load_n(x.v, __ATOMIC_ACQUIRE) &
               (int)__atomic_add_fetch(x.v, (uint64_t)1, __ATOMIC_ACQ_REL);
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   }]])], GCC_ATOMIC_BUILTINS_SUPPORTED=yes LIBATOMIC_LIBS="-latomic",
          GCC_ATOMIC_BUILTINS_SUPPORTED=no)
   LDFLAGS=$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"
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fi
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AC_SUBST([LIBATOMIC_LIBS])
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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)

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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,
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   [AS_HELP_STRING([--disable-pwr8],
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                   [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)

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

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

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

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

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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

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

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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])

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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])

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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 "$host_os" in
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openbsd* | darwin* )
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    LD_NO_UNDEFINED="" ;;
*)
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    if test "x$enable_sanitize" = xno; then
        LD_NO_UNDEFINED="-Wl,--no-undefined"
    else
        LD_NO_UNDEFINED=""
    fi
    ;;
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esac

AC_SUBST([LD_NO_UNDEFINED])

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

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

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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])

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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)

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dnl
dnl library names
dnl
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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
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case "$host_os" in
darwin* )
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    LIB_EXT='dylib'
    IMP_LIB_EXT=$LIB_EXT
    ;;
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cygwin* )
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    LIB_EXT='dll'
    IMP_LIB_EXT='dll.a'
    ;;
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aix* )
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    LIB_EXT='a'
    IMP_LIB_EXT=$LIB_EXT
    ;;
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* )
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    LIB_EXT='so'
    IMP_LIB_EXT=$LIB_EXT
    ;;
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esac
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AC_SUBST([LIB_EXT])

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

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

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AC_HEADER_MAJOR
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AC_CHECK_HEADER([xlocale.h], [DEFINES="$DEFINES -DHAVE_XLOCALE_H"])
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AC_CHECK_HEADER([sys/sysctl.h], [DEFINES="$DEFINES -DHAVE_SYS_SYSCTL_H"])
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AC_CHECK_HEADERS([endian.h])
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AC_CHECK_HEADER([dlfcn.h], [DEFINES="$DEFINES -DHAVE_DLFCN_H"])
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AC_CHECK_FUNC([strtof], [DEFINES="$DEFINES -DHAVE_STRTOF"])
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AC_CHECK_FUNC([mkostemp], [DEFINES="$DEFINES -DHAVE_MKOSTEMP"])
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AC_CHECK_FUNC([timespec_get], [DEFINES="$DEFINES -DHAVE_TIMESPEC_GET"])
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AC_CHECK_FUNC([memfd_create], [DEFINES="$DEFINES -DHAVE_MEMFD_CREATE"])
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AC_MSG_CHECKING([whether strtod has locale support])
AC_LINK_IFELSE([AC_LANG_SOURCE([[
    #define _GNU_SOURCE
    #include <stdlib.h>
    #include <locale.h>
    #ifdef HAVE_XLOCALE_H
    #include <xlocale.h>
    #endif
    int main() {
       locale_t loc = newlocale(LC_CTYPE_MASK, "C", NULL);
       const char *s = "1.0";
       char *end;
       double d = strtod_l(s, end, loc);
       float f = strtof_l(s, end, loc);
       freelocale(loc);
       return 0;
    }]])],
  [DEFINES="$DEFINES -DHAVE_STRTOD_L"];
   AC_MSG_RESULT([yes]),
   AC_MSG_RESULT([no]))

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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.
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AC_CHECK_FUNC([dlopen], [],
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    [AC_CHECK_LIB([dl], [dlopen],
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       [DLOPEN_LIBS="-ldl"])])
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AC_SUBST([DLOPEN_LIBS])
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dnl Check if that library also has dladdr
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save_LIBS="$LIBS"
LIBS="$LIBS $DLOPEN_LIBS"
AC_CHECK_FUNCS([dladdr])
LIBS="$save_LIBS"
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AC_CHECK_FUNC([dl_iterate_phdr], [DEFINES="$DEFINES -DHAVE_DL_ITERATE_PHDR"])

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case "$host_os" in
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darwin*)
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    ;;
*)
    AC_CHECK_FUNCS([clock_gettime], [CLOCK_LIB=],
                   [AC_CHECK_LIB([rt], [clock_gettime], [CLOCK_LIB=-lrt],
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                                 [AC_MSG_ERROR([Could not find clock_gettime])])])
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    AC_SUBST([CLOCK_LIB])
    ;;
esac
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dnl See if posix_memalign is available
AC_CHECK_FUNC([posix_memalign], [DEFINES="$DEFINES -DHAVE_POSIX_MEMALIGN"])

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dnl Check for zlib
PKG_CHECK_MODULES([ZLIB], [zlib >= $ZLIB_REQUIRED])
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DEFINES="$DEFINES -DHAVE_ZLIB"
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dnl Check for pthreads
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AX_PTHREAD
if test "x$ax_pthread_ok" = xno; then
    AC_MSG_ERROR([Building mesa on this platform requires pthreads])
fi
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dnl AX_PTHREADS leaves PTHREAD_LIBS empty for gcc and sets PTHREAD_CFLAGS
dnl to -pthread, which causes problems if we need -lpthread to appear in
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dnl pkgconfig files.  Since Android doesn't have a pthread lib, this check
dnl is not valid for that platform.
if test "x$android" = xno; then
    test -z "$PTHREAD_LIBS" && PTHREAD_LIBS="-lpthread"
fi
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dnl According to the manual when using pthreads, one should add -pthread to
dnl both compile and link-time arguments.
dnl In practise that should be sufficient for all platforms, since any
dnl platforms build with GCC and Clang support the flag.
PTHREAD_LIBS="$PTHREAD_LIBS -pthread"
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dnl pthread-stubs is mandatory on some BSD platforms, due to the nature of the
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dnl project. Even then there's a notable issue as described in the project README
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case "$host_os" in
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linux* | cygwin* | darwin* | solaris* | *-gnu* | gnu* | openbsd*)
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    pthread_stubs_possible="no"
    ;;
* )
    pthread_stubs_possible="yes"
    ;;
esac

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

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

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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
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    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"])
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    DEFINES="$DEFINES -DMESA_SELINUX"
fi
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AC_SUBST([SELINUX_CFLAGS])
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AC_SUBST([SELINUX_LIBS])
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dnl
dnl LLVM
dnl
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AC_ARG_ENABLE([llvm-shared-libs],
    [AS_HELP_STRING([--enable-llvm-shared-libs],
        [link with LLVM shared libraries @<:@default=enabled@:>@])],
    [enable_llvm_shared_libs="$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

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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

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

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    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
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}

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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
}

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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
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    llvm_add_optional_component "inteljitevents" $driver_name
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}

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
}

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

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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`

1111
        # We need to respect LLVM_CPPFLAGS when compiling LLVM headers.
1112
        save_CFLAGS="$CFLAGS"
1113
        CFLAGS="$CFLAGS $LLVM_CPPFLAGS"
1114

1115 1116 1117 1118
        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"])
1119 1120
        AC_COMPUTE_INT([LLVM_VERSION_PATCH], [LLVM_VERSION_PATCH],
            [#include "${LLVM_INCLUDEDIR}/llvm/Config/llvm-config.h"])
1121

1122 1123
        CFLAGS="$save_CFLAGS"

1124
        # Only needed for LLVM < 3.6.0
1125 1126 1127 1128
        if test -z "$LLVM_VERSION_PATCH"; then
            LLVM_VERSION_PATCH=0
        fi

1129
        LLVM_VERSION_INT="${LLVM_VERSION_MAJOR}0${LLVM_VERSION_MINOR}"
1130

1131
        FOUND_LLVM=yes
1132
    else
1133
        FOUND_LLVM=no
1134 1135 1136 1137
        LLVM_VERSION_INT=0
    fi
}

1138
require_llvm() {
1139 1140
    if test "x$enable_llvm" != "xyes"; then
        AC_MSG_ERROR([--enable-llvm is required when building $1])
1141 1142 1143
    fi
}

1144 1145
llvm_require_version() {
    require_llvm $2
1146 1147 1148 1149 1150 1151 1152 1153 1154

    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
1155
    fi
1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176

    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])
1177 1178 1179 1180 1181 1182 1183 1184 1185
}

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

1186
    llvm_require_version $*
1187

1188
    llvm_add_target $amdgpu_llvm_target_name $2
1189

1190 1191 1192
    llvm_add_default_components $2
    llvm_add_component "bitreader" $2
    llvm_add_component "ipo" $2
1193 1194

    if test "x$have_libelf" != xyes; then
1195
       AC_MSG_ERROR([$2 requires libelf when using llvm])
1196 1197 1198
    fi
}

1199 1200 1201 1202 1203 1204 1205 1206
llvm_set_environment_variables

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

1207 1208 1209
dnl
dnl libunwind
dnl
1210
PKG_CHECK_EXISTS(libunwind, [HAVE_LIBUNWIND=yes], [HAVE_LIBUNWIND=no])
1211 1212 1213 1214
AC_ARG_ENABLE([libunwind],
    [AS_HELP_STRING([--enable-libunwind],
            [Use libunwind for backtracing (default: auto)])],
        [LIBUNWIND="$enableval"],
1215
        [LIBUNWIND="$HAVE_LIBUNWIND"])
1216 1217

if test "x$LIBUNWIND" = "xyes"; then
1218
    PKG_CHECK_MODULES(LIBUNWIND, libunwind)
1219 1220 1221 1222
    AC_DEFINE(HAVE_LIBUNWIND, 1, [Have libunwind support])
fi


1223
dnl Options for APIs
1224 1225
AC_ARG_ENABLE([opengl],
    [AS_HELP_STRING([--disable-opengl],
1226
        [disable support for standard OpenGL API @<:@default=enabled@:>@])],
1227 1228 1229
    [enable_opengl="$enableval"],
    [enable_opengl=yes])
AC_ARG_ENABLE([gles1],
1230 1231
    [AS_HELP_STRING([--disable-gles1],
        [disable support for OpenGL ES 1.x API @<:@default=enabled@:>@])],
1232
    [enable_gles1="$enableval"],
1233
    [enable_gles1=yes])
1234
AC_ARG_ENABLE([gles2],
1235 1236
    [AS_HELP_STRING([--disable-gles2],
        [disable support for OpenGL ES 2.x API @<:@default=enabled@:>@])],
1237
    [enable_gles2="$enableval"],
1238
    [enable_gles2=yes])
1239 1240 1241

AC_ARG_ENABLE([dri],
    [AS_HELP_STRING([--enable-dri],
1242
        [enable DRI modules @<:@default=enabled@:>@])],
1243
    [enable_dri="$enableval"],
1244
    [enable_dri=yes])
1245

1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265
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"
1266
    LIBSENSORS_LIBS="-lsensors"
1267
else
1268
    LIBSENSORS_LIBS=""
1269
fi
1270
AC_SUBST(LIBSENSORS_LIBS)
1271

1272 1273 1274 1275 1276 1277 1278 1279
case "$host_os" in
linux*)
    dri3_default=yes
    ;;
*)
    dri3_default=no
    ;;
esac
1280 1281 1282 1283 1284

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

1285 1286
AC_ARG_ENABLE([dri3],
    [AS_HELP_STRING([--enable-dri3],
1287
        [enable DRI3 @<:@default=auto@:>@])],
1288
    [enable_dri3="$enableval"],
1289
    [enable_dri3="$dri3_default"])
1290
AC_ARG_ENABLE([glx],
1291 1292
    [AS_HELP_STRING([--enable-glx@<:@=dri|xlib|gallium-xlib@:>@],
        [enable the GLX library and choose an implementation @<:@default=auto@:>@])],
1293
    [enable_glx="$enableval"],
1294
    [enable_glx=yes])
1295 1296
AC_ARG_ENABLE([osmesa],
    [AS_HELP_STRING([--enable-osmesa],
1297
        [enable OSMesa library @<:@default=disabled@:>@])],
1298
    [enable_osmesa="$enableval"],
1299
    [enable_osmesa=no])
1300 1301 1302 1303 1304
AC_ARG_ENABLE([gallium-osmesa],
    [AS_HELP_STRING([--enable-gallium-osmesa],
        [enable Gallium implementation of the OSMesa library @<:@default=disabled@:>@])],
    [enable_gallium_osmesa="$enableval"],
    [enable_gallium_osmesa=no])
1305 1306 1307 1308 1309 1310
AC_ARG_ENABLE([egl],
    [AS_HELP_STRING([--disable-egl],
        [disable EGL library @<:@default=enabled@:>@])],
    [enable_egl="$enableval"],
    [enable_egl=yes])

1311 1312
AC_ARG_ENABLE([xa],
    [AS_HELP_STRING([--enable-xa],
1313
        [enable build of the XA X Acceleration API @<:@default=disabled@:>@])],
1314 1315
    [enable_xa="$enableval"],
    [enable_xa=no])
1316 1317
AC_ARG_ENABLE([gbm],
   [AS_HELP_STRING([--enable-gbm],
1318
         [enable gbm library @<:@default=yes except cygwin and macOS@:>@])],
1319
   [enable_gbm="$enableval"],
1320
   [case "$host_os" in
1321
       cygwin* | darwin*)
1322 1323 1324 1325 1326 1327
          enable_gbm=no
          ;;
       *)
          enable_gbm=yes
          ;;
    esac])
1328 1329 1330 1331 1332
AC_ARG_ENABLE([nine],
    [AS_HELP_STRING([--enable-nine],
        [enable build of the nine Direct3D9 API @<:@default=no@:>@])],
    [enable_nine="$enableval"],
    [enable_nine=no])
1333

1334 1335 1336 1337
AC_ARG_ENABLE([xvmc],
   [AS_HELP_STRING([--enable-xvmc],
         [enable xvmc library @<:@default=auto@:>@])],
   [enable_xvmc="$enableval"],
1338
   [enable_xvmc=auto])
1339 1340 1341 1342 1343
AC_ARG_ENABLE([vdpau],
   [AS_HELP_STRING([--enable-vdpau],
         [enable vdpau library @<:@default=auto@:>@])],
   [enable_vdpau="$enableval"],
   [enable_vdpau=auto])
1344 1345
AC_ARG_ENABLE([omx],
   [AS_HELP_STRING([--enable-omx],
1346 1347
         [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.])],
1348 1349 1350 1351 1352 1353
   [])
AC_ARG_ENABLE([omx-bellagio],
   [AS_HELP_STRING([--enable-omx-bellagio],
         [enable OpenMAX Bellagio library @<:@default=disabled@:>@])],
   [enable_omx_bellagio="$enableval"],
   [enable_omx_bellagio=no])
1354 1355 1356 1357 1358
AC_ARG_ENABLE([omx-tizonia],
   [AS_HELP_STRING([--enable-omx-tizonia],
         [enable OpenMAX Tizonia library @<:@default=disabled@:>@])],
   [enable_omx_tizonia="$enableval"],
   [enable_omx_tizonia=no])
1359 1360 1361 1362 1363
AC_ARG_ENABLE([va],
   [AS_HELP_STRING([--enable-va],
         [enable va library @<:@default=auto@:>@])],
   [enable_va="$enableval"],
   [enable_va=auto])
1364 1365
AC_ARG_ENABLE([opencl],
   [AS_HELP_STRING([--enable-opencl],
1366
         [enable OpenCL library @<:@default=disabled@:>@])],
1367
   [enable_opencl="$enableval"],
1368
   [enable_opencl=no])
1369 1370 1371
AC_ARG_ENABLE([opencl_icd],
   [AS_HELP_STRING([--enable-opencl-icd],
          [Build an OpenCL ICD library to be loaded by an ICD implementation
1372
           @<:@default=enabled@:>@])],
1373
    [enable_opencl_icd="$enableval"],
1374
    [enable_opencl_icd=yes])
1375

1376
AC_ARG_ENABLE([gallium-tests],
1377
    [AS_HELP_STRING([--enable-gallium-tests],
1378
        [Enable optional Gallium tests) @<:@default=disabled@:>@])],
1379 1380 1381
    [enable_gallium_tests="$enableval"],
    [enable_gallium_tests=no])

1382
# Option for Gallium drivers
1383 1384

# Keep this in sync with the --with-gallium-drivers help string default value
1385
GALLIUM_DRIVERS_DEFAULT="r300,r600,svga,swrast"
1386 1387 1388 1389

AC_ARG_WITH([gallium-drivers],
    [AS_HELP_STRING([--with-gallium-drivers@<:@=DIRS...@:>@],
        [comma delimited Gallium drivers list, e.g.
1390
        "i915,nouveau,r300,r600,radeonsi,freedreno,pl111,svga,swrast,swr,tegra,v3d,vc4,virgl,etnaviv,imx"
1391
        @<:@default=r300,r600,svga,swrast@:>@])],
1392 1393
    [with_gallium_drivers="$withval"],
    [with_gallium_drivers="$GALLIUM_DRIVERS_DEFAULT"])
1394

1395 1396 1397 1398 1399 1400 1401
# 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

1402 1403 1404
if test "x$enable_opengl" = xno -a \
        "x$enable_gles1" = xno -a \
        "x$enable_gles2" = xno -a \
1405
        "x$enable_nine" = xno -a \
1406
        "x$enable_xa" = xno -a \
1407 1408
        "x$enable_xvmc" = xno -a \
        "x$enable_vdpau" = xno -a \
1409
        "x$enable_omx_bellagio" = xno -a \
1410
        "x$enable_omx_tizonia" = xno -a \
1411
        "x$enable_va" = xno -a \
1412
        "x$enable_opencl" = xno; then
1413 1414 1415
    AC_MSG_ERROR([at least one API should be enabled])
fi

1416 1417 1418 1419 1420
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

1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431
# 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

1432 1433 1434 1435 1436 1437
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)
1438
AM_CONDITIONAL(NEED_KHRPLATFORM, test "x$enable_egl" = xyes -o \
1439
                                      "x$enable_opengl" = xyes -o \
1440 1441
                                      "x$enable_gles1" = xyes -o \
                                      "x$enable_gles2" = xyes)
1442

1443 1444 1445 1446 1447 1448 1449 1450 1451
# Validate GLX options
if test "x$enable_glx" = xyes; then
    if test "x$enable_dri" = xyes; then
        enable_glx=dri
    elif test -n "$with_gallium_drivers"; then
        enable_glx=gallium-xlib
    else
        enable_glx=xlib
    fi
1452
fi
1453 1454 1455 1456 1457 1458
case "x$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
1459

1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487
    # 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
1488

1489
AM_CONDITIONAL(HAVE_GLX, test "x$enable_glx" != xno)
1490 1491 1492
AM_CONDITIONAL(HAVE_DRI_GLX, test "x$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)
1493

1494 1495
DEFAULT_GL_LIB_NAME=GL

1496 1497 1498 1499 1500
dnl
dnl Libglvnd configuration
dnl
AC_ARG_ENABLE([libglvnd],
    [AS_HELP_STRING([--enable-libglvnd],
1501
        [Build GLX and EGL for libglvnd @<:@default=disabled@:>@])],
1502 1503
    [enable_libglvnd="$enableval"],
    [enable_libglvnd=no])
1504 1505
AM_CONDITIONAL(USE_LIBGLVND, test "x$enable_libglvnd" = xyes)

1506 1507 1508 1509 1510 1511 1512
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

1513
    PKG_CHECK_MODULES([GLVND], libglvnd >= 0.2.0)
1514
    LIBGLVND_DATADIR=`$PKG_CONFIG --variable=datadir libglvnd`
1515 1516 1517
    AC_SUBST([LIBGLVND_DATADIR])

    DEFINES="${DEFINES} -DUSE_LIBGLVND=1"
1518
    DEFAULT_GL_LIB_NAME=GLX_mesa
1519 1520 1521 1522

    if test "x$enable_glx" = xno -a "x$enable_egl" = xno; then
        AC_MSG_ERROR([cannot build libglvnd without GLX or EGL])
    fi
1523 1524
fi

1525 1526 1527
AC_ARG_WITH([gl-lib-name],
  [AS_HELP_STRING([--with-gl-lib-name@<:@=NAME@:>@],
    [specify GL library name @<:@default=GL@:>@])],
1528 1529
  [AC_MSG_ERROR([--with-gl-lib-name is no longer supported. Rename the library manually if needed.])],
  [])
1530 1531 1532
AC_ARG_WITH([osmesa-lib-name],
  [AS_HELP_STRING([--with-osmesa-lib-name@<:@=NAME@:>@],
    [specify OSMesa library name @<:@default=OSMesa@:>@])],
1533 1534 1535 1536
  [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
1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547

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
1548 1549 1550
  if test "x$enable_libglvnd" = xyes; then
    AC_MSG_ERROR([Conflicting options --enable-mangling and --enable-libglvnd.])
  fi
1551 1552 1553 1554 1555 1556 1557
  DEFINES="${DEFINES} -DUSE_MGL_NAMESPACE"
  GL_LIB="Mangled${GL_LIB}"
  OSMESA_LIB="Mangled${OSMESA_LIB}"
fi
AC_SUBST([GL_LIB])
AC_SUBST([OSMESA_LIB])

1558 1559 1560 1561 1562 1563 1564 1565 1566
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])

1567 1568 1569 1570
# Check for libdrm
PKG_CHECK_MODULES([LIBDRM], [libdrm >= $LIBDRM_REQUIRED],
                  [have_libdrm=yes], [have_libdrm=no])
if test "x$have_libdrm" = xyes; then
1571
    DEFINES="$DEFINES -DHAVE_LIBDRM"
1572 1573
fi

1574 1575 1576 1577 1578 1579 1580
require_libdrm() {
    if test "x$have_libdrm" != xyes; then
       AC_MSG_ERROR([$1 requires libdrm >= $LIBDRM_REQUIRED])
    fi
}


1581 1582 1583 1584
# Select which platform-dependent DRI code gets built
case "$host_os" in
darwin*)
    dri_platform='apple' ;;
1585 1586 1587
cygwin*)
    dri_platform='windows' ;;
gnu*)
1588 1589 1590 1591 1592
    dri_platform='none' ;;
*)
    dri_platform='drm' ;;
esac

1593 1594 1595 1596
if test "x$enable_dri" = xyes -a "x$dri_platform" = xdrm -a "x$have_libdrm" = xyes; then
    have_drisw_kms='yes'
fi

1597 1598
AM_CONDITIONAL(HAVE_DRICOMMON, test "x$enable_dri" = xyes )
AM_CONDITIONAL(HAVE_DRISW, test "x$enable_dri" = xyes )
1599
AM_CONDITIONAL(HAVE_DRISW_KMS, test "x$have_drisw_kms" = xyes )
1600 1601
AM_CONDITIONAL(HAVE_DRI2, test "x$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$have_libdrm" = xyes )
1602
AM_CONDITIONAL(HAVE_APPLEDRI, test "x$enable_dri" = xyes -a "x$dri_platform" = xapple )
1603 1604
AM_CONDITIONAL(HAVE_LMSENSORS, test "x$enable_lmsensors" = xyes )
AM_CONDITIONAL(HAVE_GALLIUM_EXTRA_HUD, test "x$enable_gallium_extra_hud" = xyes )
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AM_CONDITIONAL(HAVE_WINDOWSDRI, test "x$enable_dri" = xyes -a "x$dri_platform" = xwindows )
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AM_CONDITIONAL(HAVE_XLEASE, test "x$have_xlease" = xyes )
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Matt Turner committed
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AC_ARG_ENABLE([shared-glapi],
    [AS_HELP_STRING([--enable-shared-glapi],
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        [Enable shared glapi for OpenGL @<:@default=enabled@:>@])],
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    [enable_shared_glapi="$enableval"],
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    [enable_shared_glapi=yes])
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