AC_PREREQ(2.59)
AC_INIT([xbmc-depends], [2.00], [https://github.com/xbmc/xbmc])
:${CFLAGS=""}
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_FILES([native/config.site.native Makefile.include
                 target/config.site target/config-binaddons.site
                 target/Toolchain.cmake target/Toolchain_binaddons.cmake
                 native/Toolchain-Native.cmake])
AC_CANONICAL_HOST
AC_CANONICAL_BUILD

m4_include([m4/xbmc_arch.m4])
m4_include([m4/ax_cxx_compile_stdcxx.m4])
m4_include([m4/ax_compare_version.m4])

# check for not same cpu value
AC_DEFUN([MC_CHECK_NOT_CPU],
[
  AC_MSG_CHECKING([for $2])
  case $1 in
    $2*)
      AC_MSG_ERROR(error in configure of --with-cpu=$1)
      ;;
    *)
      AC_MSG_RESULT([$1 is not $2])
  esac
])

AC_ARG_ENABLE([debug],
  [AS_HELP_STRING([--enable-debug],
  [enable debugging information (default is yes)])],
  [use_debug=$enableval],
  [use_debug=yes])

AC_ARG_ENABLE([ccache],
  [AS_HELP_STRING([--disable-ccache],
  [disable ccache])],
  [use_ccache=no],
  [use_ccache=yes])

AC_ARG_WITH([linker],
  [AS_HELP_STRING([--with-linker],
  [specify linker to use.])],
  [use_linker=$withval])

AC_ARG_WITH([toolchain],
  [AS_HELP_STRING([--with-toolchain],
  [specify path to toolchain. Auto set for android. Defaults to xcode root for darwin, /usr for linux])],
  [use_toolchain=$withval])

AC_ARG_WITH([platform],
  [AS_HELP_STRING([--with-platform],
  [target platform [auto]])],
  [use_platform=$withval],
  [use_platform=auto])

AC_ARG_WITH([firmware],
  [AS_HELP_STRING([--with-firmware],
  [platform specific firmware []])],
  [use_firmware=$withval])

AC_ARG_WITH([tarballs],
  [AS_HELP_STRING([--with-tarballs],
  [path where tarballs will be saved [prefix/xbmc-tarballs]])],
  [use_tarballs=$withval])

AC_ARG_WITH([cpu],
  [AS_HELP_STRING([--with-cpu],
  [optional. specify target cpu. guessed if not specified])],
  [use_cpu=$withval],
  [use_cpu=auto])

AC_ARG_WITH([ndk-path],
  [AS_HELP_STRING([--with-ndk-path],
  [specify path to ndk (required for android only)])],
  [use_ndk_path=$withval])

AC_ARG_WITH([sdk-path],
  [AS_HELP_STRING([--with-sdk-path],
  [specify path to sdk (required for android only)])],
  [use_sdk_path=$withval])

AC_ARG_WITH([sdk],
  [AS_HELP_STRING([--with-sdk],
  [specify sdk platform version.])],
  [use_sdk=$withval])

AC_ARG_WITH([ndk-api],
  [AS_HELP_STRING([--with-ndk-api],
  [specify ndk level (optional for android), default is 21.])],
  [use_ndk_api=$withval],
  [use_ndk_api=21])

AC_ARG_ENABLE([gplv3],
  [AS_HELP_STRING([--enable-gplv3],
  [enable gplv3 components. default is yes])],
  [use_gplv3=$enableval],
  [use_gplv3=yes])

AC_ARG_WITH([rendersystem],
  [AS_HELP_STRING([--with-rendersystem],
  [render system to use])],
  [app_rendersystem=$withval])

AC_ARG_WITH([windowsystem],
  [AS_HELP_STRING([--with-windowsystem],
  [Windowing system to use])],
  [app_winsystem=$withval])

AC_ARG_WITH([target-cflags],
  [AS_HELP_STRING([--with-target-cflags],
  [C compiler flags (target)])],
  [target_cflags=$withval])

AC_ARG_WITH([target-cxxflags],
  [AS_HELP_STRING([--with-target-cxxflags],
  [C++ compiler flags (target)])],
  [target_cxxflags=$withval],
  [target_cxxflags=$target_cflags])

AC_ARG_WITH([target-ldflags],
  [AS_HELP_STRING([--with-target-ldflags],
  [linker flags. Use e.g. for -l<lib> (target)])],
  [target_ldflags=$withval])

AC_ARG_WITH([ffmpeg-options],
  [AS_HELP_STRING([--with-ffmpeg-options],
  [FFmpeg configure options, e.g. --enable-vaapi (target)])],
  [ffmpeg_options=$withval],
  [ffmpeg_options=default])


if test "$use_ccache" = "yes"; then
  AC_CHECK_PROG(HAVE_CCACHE,ccache,"yes","no",)
  if test "x$HAVE_CCACHE" = "xno" ; then
    use_ccache=no
  fi
fi

AC_PATH_PROG(CURL,curl,"no")
if test "x$CURL" = "xno" ; then
  AC_MSG_ERROR("Missing program: curl")
fi

AC_PATH_PROG(TAR,tar,"no")
if test "x$TAR" = "xno" ; then
  AC_MSG_ERROR("Missing program: tar")
fi

if test "x$use_linker" = "x" ; then
  use_linker=ld
fi

if test "$use_debug" = "yes"; then
  build_type="debug"
else
  build_type="release"
fi

use_host=$host_alias
use_build=$build_cpu-$build_vendor-$build_os
use_buildcpu=$build_cpu

cross_compiling="yes"
if test "x$host" = "x$build"; then
  use_host=$build_cpu-$build_os
  cross_compiling="no"
fi

deps_dir=$use_host-$build_type
tool_dir=$build_cpu-$build_os-native
cross_compiling="yes"

case $build in
  aarch64*-*-linux-gnu*|aarch64*-*-linux-uclibc*)
    build_os="linux"
  ;;
  arm*-*-linux-gnu*|arm*-*-linux-uclibc*)
    build_os="linux"
  ;;
  *i686*-linux-gnu*|i*86*-*-linux-uclibc*)
    build_os="linux"
  ;;
  x86_64*-linux-gnu*|x86_64-*-linux-uclibc*)
    build_os="linux"
    android_toolchain_name="linux-x86_64"
  ;;
  *darwin*)
    build_os="osx"
    if test "x$build_cpu" = "xx86_64"; then
      host_includes="-arch x86_64 -mmacosx-version-min=10.13"
    else
      host_includes="-arch arm64 -mmacosx-version-min=11.0"
    fi
    use_xcrun=xcrun

    # acquire build platform (native) sdk sysroot.
    build_platform=macosx
    native_sdk_path=[`$use_xcrun --show-sdk-path`]
    host_sysroot="$native_sdk_path"
    host_includes="${host_includes} -isysroot $native_sdk_path"

    CC_FOR_BUILD=[`$use_xcrun --find clang`]
    use_build_toolchain=[`$CC_FOR_BUILD --version | grep InstalledDir | awk '{ print $2}'`]

    # Android NDK currently only x86_64 prebuilts - Arctic Fox 2020.3.1
    android_toolchain_name="darwin-x86_64"

    host_cxxflags="-std=c++17 -stdlib=libc++"

    if test "x$prefix" = "xNONE"; then
      prefix=/Users/Shared/xbmc-depends
    fi
  ;;
  *)
    AC_MSG_ERROR(unsupported native build platform: $build)
esac


if test "x$build_os" = "xosx"; then
  AC_PATH_PROG(SHASUM,shasum,"no")
  if test "x$SHASUM" = "xno" ; then
    AC_MSG_ERROR("Missing program: shasum")
  fi
else
  AC_PATH_PROG(SHA512SUM,sha512sum,"no")
  if test "x$SHA512SUM" = "xno" ; then
    AC_MSG_ERROR("Missing program: sha512sum")
  fi

  AC_PATH_PROG(SHA256SUM,sha256sum,"no")
  if test "x$SHA256SUM" = "xno" ; then
    AC_MSG_ERROR("Missing program: sha256sum")
  fi
fi

if test -n $use_build_toolchain; then
  PATH_FOR_BUILD=$use_build_toolchain:$use_build_toolchain/usr/bin:$use_toolchain/bin:$PATH
else
  PATH_FOR_BUILD=$PATH
fi

AC_PATH_PROG([RANLIB_FOR_BUILD], [ranlib], ranlib, $PATH_FOR_BUILD)
AC_PATH_PROG([LD_FOR_BUILD], [ld], ld, $PATH_FOR_BUILD)
AC_PATH_PROG([AR_FOR_BUILD], [ar], ar, $PATH_FOR_BUILD)
AC_PATH_PROG([READELF_FOR_BUILD], [readelf],, $PATH_FOR_BUILD)
AC_PATH_PROG([STRIP_FOR_BUILD], [strip], strip, $PATH_FOR_BUILD)
AC_PATH_PROG([AS_FOR_BUILD], [as], as, $PATH_FOR_BUILD)
AC_PATH_PROG([NM_FOR_BUILD], [nm], nm, $PATH_FOR_BUILD)
AC_PATH_PROG([OBJDUMP_FOR_BUILD], [objdump], objdump, $PATH_FOR_BUILD)
AC_PATH_PROG([CC_FOR_BUILD],[clang gcc llvm-gcc], gcc, $PATH_FOR_BUILD)
AC_PATH_PROG([CXX_FOR_BUILD],[clang++ g++ llvm-g++], g++, $PATH_FOR_BUILD)

platform_cc=gcc
platform_cxx=g++

case $host in
  *-*linux-android*)
    use_toolchain="${use_toolchain:-$use_ndk_path/toolchains/llvm/prebuilt/$android_toolchain_name}"
    platform_cc=$use_host$use_ndk_api-clang
    platform_cxx=$use_host$use_ndk_api-clang++

    platform_tool_prefix=llvm-

    case $host in
      arm*-*linux-android*)
        platform_cc=armv7a-linux-androideabi$use_ndk_api-clang
        platform_cxx=armv7a-linux-androideabi$use_ndk_api-clang++
    esac
  ;;
  *darwin*)
    CC=[`$use_xcrun --find clang`]
    platform_cxx=clang++
    use_toolchain=[`$CC --version | grep InstalledDir | awk '{ print $2}'`]
esac

if test -n $use_toolchain; then
  PATH_FOR_HOST=$use_toolchain:$use_toolchain/usr/bin:$use_toolchain/bin:$PATH
else
  PATH_FOR_HOST=$PATH
fi

AC_PATH_TOOL([RANLIB], [${platform_tool_prefix}ranlib],, $PATH_FOR_HOST)
AC_PATH_TOOL([LD], [${use_linker}],, $PATH_FOR_HOST)
AC_PATH_TOOL([AR], [${platform_tool_prefix}ar],, $PATH_FOR_HOST)
AC_PATH_TOOL([READELF], [${platform_tool_prefix}readelf],, $PATH_FOR_HOST)
AC_PATH_TOOL([STRIP], [${platform_tool_prefix}strip],, $PATH_FOR_HOST)
AC_PATH_TOOL([AS], [${platform_tool_prefix}as],, $PATH_FOR_HOST)
AC_PATH_TOOL([NM], [${platform_tool_prefix}nm],, $PATH_FOR_HOST)
AC_PATH_TOOL([OBJDUMP], [${platform_tool_prefix}objdump],, $PATH_FOR_HOST)
AC_PATH_TOOL([CC],[$platform_cc],,$PATH_FOR_HOST)
AC_PATH_TOOL([CXX],[$platform_cxx],,$PATH_FOR_HOST)

if test "x$LD" = "x"; then
  AC_MSG_ERROR(No linker found with name ${use_linker}. You may want to provide using --with-linker=<linker>)
fi

case $build in
  *darwin*)
    # MacOS 11 requires explicit isysroot for autoconf compiler tests
    # However we do not want to pollute CFLAGS/CXXFLAGS once compiler tests are complete
    CFLAGS="${CFLAGS} $host_includes"
    CXXFLAGS="${CXXFLAGS} $host_includes"
esac

AC_PROG_CPP

case $build in
  *darwin*)
    CFLAGS=$(echo "$CFLAGS" | sed "s|$host_includes||")
    CXXFLAGS=$(echo "$CXXFLAGS" | sed "s|$host_includes||")
esac

case $host in
  *-*linux-android*)
    deps_dir="$use_host-$use_ndk_api-$build_type"
    platform_cflags="-DANDROID -D__ANDROID_API__=$use_ndk_api -fexceptions -funwind-tables -fstack-protector-strong -no-canonical-prefixes -fPIC -DPIC"
    optimize_flags="-Os"
    platform_ldflags="-Wl,--exclude-libs,libgcc.a -Wl,--exclude-libs,libatomic.a -L$prefix/$deps_dir/lib/android-$use_ndk_api"

    case $host in
      arm*-*linux-android*)
        if test "x$use_cpu" = "xauto"; then
          use_cpu="armeabi-v7a"
        fi
        if test "x$use_cpu" = "xarmeabi-v7a"; then
          platform_cflags="${platform_cflags} -march=armv7-a -mtune=cortex-a9 -mfloat-abi=softfp -mfpu=neon"
        fi
        platform_ldflags="${platform_ldflags} -Wl,--exclude-libs,libunwind.a"
        meson_cpu="arm"
      ;;
      aarch64*-*linux-android*)
        if test "x$use_cpu" = "xauto"; then
          use_cpu="arm64-v8a"
        fi
        if test "x$use_cpu" = "xarm64-v8a"; then
          platform_cflags="${platform_cflags} -march=armv8-a -mtune=cortex-a53"
        fi
        meson_cpu="aarch64"
      ;;
      i*86*-linux-android*)
        if test "x$use_cpu" = "xauto"; then
          use_cpu=$host_cpu
        fi
        meson_cpu="x86"
      ;;
      x86_64*-linux-android*)
        if test "x$use_cpu" = "xauto"; then
          use_cpu=$host_cpu
        fi
        meson_cpu="x86_64"
      ;;
      *)
        AC_MSG_ERROR(unsupported host ($use_host))
      esac

    platform_cxxflags="$platform_cflags -frtti"
    platform_includes="-isystem $prefix/$deps_dir/include/android-$use_ndk_api"
    platform_os="android"
    meson_system="android"
    #android builds are always cross
    cross_compiling="yes"
  ;;
  arm*-*-linux-gnu*|arm*-*-linux-uclibc*|aarch64*-*-linux-gnu*|aarch*-*-linux-be*)
    case $host in
      arm*-*-linux-gnu*|arm*-*-linux-uclibc*)
        meson_cpu="arm"
      ;;
      aarch64*-*-linux-gnu*|aarch*-*-linux-be*)
        meson_cpu="aarch64"
      ;;
    esac
    if test "x$use_cpu" = "xauto"; then
      use_cpu=$host_cpu
    fi
    use_toolchain="${use_toolchain:-/usr}"
    platform_cflags="-fPIC -DPIC"
    optimize_flags="-Os"
    platform_ldflags="-Wl,-rpath-link=$prefix/$deps_dir/lib"
    platform_cxxflags="$platform_cflags"
    platform_os="linux"
    meson_system="linux"
    target_platform="wayland gbm"
  ;;
  *i686*-linux-gnu*|i*86*-*-linux-uclibc*|x86_64*-linux-gnu*|x86_64-*-linux-uclibc*)
    case $host in
      *i686*-linux-gnu*|i*86*-*-linux-uclibc*)
        meson_cpu="x86"
      ;;
      x86_64*-linux-gnu*|x86_64-*-linux-uclibc*)
        meson_cpu="x86_64"
      ;;
    esac
    use_cpu=$host_cpu
    use_toolchain="${use_toolchain:-/usr}"
    platform_cflags="-fPIC -DPIC"
    optimize_flags="-O2"
    platform_cxxflags="$platform_cflags"
    platform_os="linux"
    meson_system="linux"
    ffmpeg_options_default="--enable-vaapi --enable-vdpau --cpu=$use_cpu"
    target_platform="x11 wayland gbm"
  ;;
  *darwin*)
    # darwin builds are always cross
    cross_compiling="yes"

    meson_system="darwin"

    platform_cflags="-fheinous-gnu-extensions"
    platform_ldflags="-Wl,-search_paths_first"

    case $use_platform in
      tvos)
        target_platform=appletvos
        platform_os="darwin_embedded"
      ;;
      ios)
        target_platform=iphoneos
        platform_os="darwin_embedded"
      ;;
      macos)
        target_platform=macosx
        platform_os="osx"
      ;;
      *)
        AC_MSG_ERROR(error in configure no platform provided --with-platform)
      ;;
    esac

    found_sdk_version=[`$use_xcrun --sdk $target_platform --show-sdk-version`]
    use_sdk="${use_sdk:-$found_sdk_version}"
    use_sdk_path=$($use_xcrun --sdk $target_platform --show-sdk-path)
    sdk_name=$target_platform$use_sdk

    case $host in
      x86_64-apple-darwin)
        MC_CHECK_NOT_CPU([$use_cpu], "arm*")

        # setup which cpu to use
        if test "x$use_cpu" = "xauto"; then
          use_cpu=x86_64
          meson_cpu=$use_cpu
        else
          AC_MSG_ERROR(invalid architecture (--with-cpu=$use_cpu))
        fi

        target_minver="10.13"

        # check provided window system is valid_sdk
        # if no window system supplied, default to SDL for now.
        if test -n "$app_winsystem"; then
          if test "$app_winsystem" != "native" && test "$app_winsystem" != "sdl"; then
            AC_MSG_ERROR(Window system must be native or sdl)
          fi
        else
          app_winsystem=sdl
        fi
      ;;
      aarch64-apple-darwin*)
        MC_CHECK_NOT_CPU([$use_cpu], "*86")

        case $platform_os in
          darwin_embedded)
            target_minver="11.0"
          ;;
          osx)
            target_minver="11.0"
            app_winsystem=native
          ;;
          *)
            AC_MSG_ERROR(invalid platform for architecture ($host))
          ;;
        esac

        # setup which cpu to use
        if test "x$use_cpu" = "xauto"; then
          use_cpu=arm64
          meson_cpu="aarch64"
        else
          AC_MSG_ERROR(invalid architecture (--with-cpu=$use_cpu))
        fi

        platform_cflags="${platform_cflags} -ftree-vectorize -pipe -Wno-trigraphs -fpascal-strings"
        platform_cflags="${platform_cflags} -Wreturn-type -Wunused-variable -fmessage-length=0 -gdwarf-2"
        optimize_flags="-O3"
        platform_ldflags="${platform_ldflags} -L$use_sdk_path/usr/lib"
      ;;
    esac

    AX_COMPARE_VERSION([$use_sdk], [ge], [$target_minver], , AC_MSG_ERROR("invalid SDK version provided (--with-sdk=$use_sdk) less than minimum supported ($target_minver)"))

    platform_min_version="$target_platform-version-min=$target_minver"

    platform_includes="-arch $use_cpu -m$platform_min_version -isysroot $use_sdk_path"
    platform_ldflags="${platform_ldflags} $platform_includes -stdlib=libc++"
    platform_cxxflags="${platform_cxxflags} -stdlib=libc++"
    deps_dir="${sdk_name}_${use_cpu}-target-${build_type}"
  ;;
  *)
    AC_MSG_ERROR(unsupported host ($use_host))
esac

case $use_platform in
  ios|tvos|macos)
    ;;
  auto)
    ;;
  *)
    AC_MSG_ERROR(unsupported platform ($use_platform))
esac

XBMC_SETUP_ARCH_DEFINES()

case $build in
  *darwin*)
    if test "$platform_os" != "android"; then
      # MacOS 11 requires explicit isysroot for autoconf link tests
      # However we do not want to pollute LDFLAGS once lib link tests are complete
      LDFLAGS="$platform_includes"
      AC_CHECK_LIB([z], [main], has_zlib=1, AC_MSG_WARN("No zlib support in toolchain. Will build libz."); has_zlib=0)
    fi
esac

if test "$platform_os" = "android"; then
  need_libiconv=1
else
  AC_SEARCH_LIBS([iconv_open],iconv, link_iconv=$ac_cv_search_iconv_open, link_iconv=-liconv; AC_MSG_WARN("No iconv support in toolchain. Will build libiconv."); need_libiconv=1)
fi

case $build in
  *darwin*)
    LDFLAGS=$(echo "$LDFLAGS" | sed "s|$platform_includes||")
esac

if test "$link_iconv" = "none required"; then
  link_iconv=
fi

if test "x$prefix" = "xNONE"; then
  AC_MSG_ERROR([No prefix path defined. Use for ex: --prefix=/opt/xbmc-depends]);
fi

if test "$use_ccache" = "yes"; then
  AC_PATH_TOOL([CCACHE], [ccache],, $PATH_FOR_HOST)
fi

if test -z $use_tarballs; then
  use_tarballs=$prefix/xbmc-tarballs
fi

if test "$platform_os" = "linux"; then
  if test "$app_rendersystem" != "gl" && test "$app_rendersystem" != "gles"; then
    AC_MSG_ERROR(Rendersystem is required for linux - must be gl or gles)
  fi
fi

if test "$platform_os" = "android"; then
  if test -z $use_ndk_path; then
    AC_MSG_ERROR("NDK path is required for android")
  fi

  if ([! test -f "$use_ndk_path/source.properties"] && [! test -f "$use_ndk_path/RELEASE.TXT"]) ; then
    AC_MSG_ERROR("$use_ndk_path is not an NDK directory")
  fi

  if test -z $use_sdk_path; then
    AC_MSG_ERROR("SDK path is required for android")
  fi

  if [ ! test -f $use_sdk_path/tools/bin/sdkmanager ]; then
    AC_MSG_ERROR(verify sdk path)
  fi

  if [ ! test -f $use_ndk_path/sources/android/native_app_glue/android_native_app_glue.h ]; then
    AC_MSG_ERROR(verify ndk path)
  fi

  #not all sort versions support -V - probe it...
  SORT_PARAMS=""
  sort -V /dev/null > /dev/null 2>&1 && SORT_PARAMS="-V"
  build_tools_path=$use_sdk_path/tools:$use_sdk_path/platform-tools:$use_sdk_path/build-tools/`ls $use_sdk_path/build-tools | sort $SORT_PARAMS | tail -n 1`
fi

# darwin needs unzip in Codesign.command
if test "$platform_os" = "android" || test "$platform_os" = "osx" || test "$platform_os" = "darwin_embedded"; then
  AC_CHECK_PROG(HAVE_UNZIP,unzip,"yes","no",)
  if test "x$HAVE_UNZIP" = "xno"; then
    AC_MSG_ERROR("Missing program: unzip")
  fi
fi
# darwin needs zip in Codesign.command
# android needs zip in tools/android/packaging/Makefile sharedobb target
if test "$platform_os" = "android" || test "$platform_os" = "osx" || test "$platform_os" = "darwin_embedded"; then
  AC_CHECK_PROG(HAVE_ZIP,zip,"yes","no",)
  if test "x$HAVE_ZIP" = "xno"; then
    AC_MSG_ERROR("Missing program: zip")
  fi
fi

# Some dumb checks to see if paths might be correct.
if [ ! `mkdir -p $prefix/$deps_dir/include` ]; then
  AC_MSG_ERROR(unable to create $prefix/$deps_dir/include. verify that the path and permissions are correct.)
fi

if [ ! `mkdir -p $prefix/$deps_dir/lib` ]; then
  AC_MSG_ERROR(unable to create $prefix/$deps_dir/lib. verify that the path and permissions are correct.)
fi

if [ ! `mkdir -p $prefix/$deps_dir/share` ]; then
  AC_MSG_ERROR(unable to create $prefix/$deps_dir/share. verify that the path and permissions are correct.)
fi

if [ ! `mkdir -p $prefix/$tool_dir/include` ]; then
  AC_MSG_ERROR(unable to create $prefix/$tool_dir/include. verify that the path and permissions are correct.)
fi

if [ ! `mkdir -p $prefix/$tool_dir/lib` ]; then
  AC_MSG_ERROR(unable to create $prefix/$tool_dir/lib. verify that the path and permissions are correct.)
fi

if [ ! `mkdir -p $prefix/$tool_dir/share` ]; then
  AC_MSG_ERROR(unable to create $prefix/$tool_dir/share. verify that the path and permissions are correct.)
fi

if [ ! `mkdir -p $prefix/$tool_dir/bin` ]; then
  AC_MSG_ERROR(unable to create $prefix/$tool_dir/share. verify that the path and permissions are correct.)
fi

if [ ! `mkdir -p $use_tarballs` ]; then
  AC_MSG_ERROR(unable to create tarballs dir. verify that the path and permissions are correct.)
fi

# remove unwanted optimization flags
tmp_cflags=$(echo $CFLAGS $platform_cflags | sed 's/-O@<:@123@:>@//g;s/-g //g;s/ \{2,\}//g')
tmp_cxxflags=$(echo $CXXFLAGS $platform_cxxflags | sed 's/-O@<:@123@:>@//g;s/-g //g;s/ \{2,\}//g')

release_cflags="-DNDEBUG=1"

# newer xcode version accept -Og flag, but debugging doesn't work with it
if test "$platform_os" = "osx" || test "$platform_os" = "darwin_embedded"; then
  debug_cflags="-g -D_DEBUG"
else
  CFLAGS="$tmp_cflags -Og -g -D_DEBUG"
  AC_COMPILE_IFELSE(
    [AC_LANG_SOURCE([int foo;])],
    [debug_cflags="-Og -g -D_DEBUG"],
    [debug_cflags="-g -D_DEBUG"])
fi

# add user supplied flags to the end, so they override our defaults
platform_cflags_release="$tmp_cflags $release_cflags $optimize_flags $target_cflags"
platform_cxxflags_release="$tmp_cxxflags $release_cflags $optimize_flags $target_cxxflags"
platform_cflags_debug="$tmp_cflags $debug_cflags $target_cflags"
platform_cxxflags_debug="$tmp_cxxflags $debug_cflags $target_cxxflags"
platform_ldflags="${platform_ldflags} $target_ldflags $LIBS"

if test "$use_debug" = "yes"; then
  platform_cflags="$platform_cflags_debug"
  platform_cxxflags="$platform_cxxflags_debug"
else
  platform_cflags="$platform_cflags_release"
  platform_cxxflags="$platform_cxxflags_release"
fi

CXXFLAGS="$platform_cxxflags $platform_includes"
CXX_CACHED="$CXX"
AX_CXX_COMPILE_STDCXX([17], [noext], [mandatory])
CXX="$CXX_CACHED"
platform_cxxflags="${platform_cxxflags} -std=c++17"

if test "$ffmpeg_options" = "default"; then
  ffmpeg_options="$ffmpeg_options_default"
fi

if test "$platform_os" = "android"; then
echo -e
  AC_SUBST(use_sdk_path)
  AC_SUBST(use_ndk_path)
  AC_SUBST(use_ndk_api)
  AC_SUBST(build_tools_path)
fi

AC_SUBST(meson_system)
AC_SUBST(meson_cpu)
AC_SUBST(use_debug)
AC_SUBST(use_host)
AC_SUBST(use_build)
AC_SUBST(deps_dir)
AC_SUBST(tool_dir)
AC_SUBST(use_buildcpu)
AC_SUBST(use_cpu)
AC_SUBST(use_toolchain)
AC_SUBST(use_build_toolchain)
AC_SUBST(use_tarballs)
AC_SUBST(target_platform)
AC_SUBST(use_firmware)
AC_SUBST(cross_compiling)
AC_SUBST(platform_cflags)
AC_SUBST(platform_cxxflags)
AC_SUBST(platform_cflags_release)
AC_SUBST(platform_cxxflags_release)
AC_SUBST(platform_cflags_debug)
AC_SUBST(platform_cxxflags_debug)
AC_SUBST(platform_ldflags)
AC_SUBST(platform_includes)
AC_SUBST(platform_os)
AC_SUBST(build_os)
AC_SUBST(has_zlib)
AC_SUBST(link_iconv)
AC_SUBST(need_libiconv)
AC_SUBST(use_gplv3)
AC_SUBST(use_ccache)
AC_SUBST(host_includes)
AC_SUBST(host_sysroot)
AC_SUBST(host_cxxflags)
AC_SUBST(app_rendersystem)
AC_SUBST(app_winsystem)
AC_SUBST(ffmpeg_options)

[
if test "x$CCACHE" = "x"
then
  MESON_CC="'$CC'"
  MESON_CXX="'$CXX'"
else
  MESON_CC="['$CCACHE', '$CC']"
  MESON_CXX="['$CCACHE', '$CXX']"
fi

# Parse and handle CFLAGS
read -r CFLAGS_ARRAY << EOF
$platform_cflags $platform_includes -isystem $prefix/$deps_dir/include
EOF

count=1
for flag in $CFLAGS_ARRAY; do
  if test "$flag" != "-g"
  then
    if test "$flag" != "-gdwarf-2"
    then
      MESON_CFLAGS="${MESON_CFLAGS:+${MESON_CFLAGS}, }'$flag'"
      count=$((count + 1))
    fi
  fi
done
if test "$count" -gt "2"
then
  MESON_CFLAGS="[$MESON_CFLAGS]"
fi

# Parse and handle CXXFLAGS
read -r CXXFLAGS_ARRAY << EOF
$platform_cxxflags $platform_includes -isystem $prefix/$deps_dir/include
EOF

count=1
for flag in $CXXFLAGS_ARRAY; do
  if test "$flag" != "-g"
  then
    if test "$flag" != "-gdwarf-2"
    then
      MESON_CXXFLAGS="${MESON_CXXFLAGS:+${MESON_CXXFLAGS}, }'$flag'"
      count=$((count + 1))
    fi
  fi
done
if test "$count" -gt "2"
then
  MESON_CXXFLAGS="[$MESON_CXXFLAGS]"
fi

# Parse and handle LDFLAGS
read -r LDFLAGS_ARRAY << EOF
-L$prefix/$deps_dir/lib $platform_ldflags
EOF

count=1
for flag in $LDFLAGS_ARRAY; do
  MESON_LDFLAGS="${MESON_LDFLAGS:+${MESON_LDFLAGS}, }'$flag'"
  count=$((count + 1))
done
if test "$count" -gt "2"
then
  MESON_LDFLAGS="[$MESON_LDFLAGS]"
fi

cat > $prefix/$deps_dir/share/cross-file.meson << EOF
[binaries]
c = $MESON_CC
cpp = $MESON_CXX
ar = '$AR'
strip = '$STRIP'
pkgconfig = '$prefix/$tool_dir/bin/pkg-config'

[host_machine]
system = '$meson_system'
cpu_family = '$meson_cpu'
cpu = '$use_cpu'
endian = 'little'

[properties]
pkg_config_libdir = '$prefix/$deps_dir/lib/pkgconfig'

[built-in options]
c_args = $MESON_CFLAGS
c_link_args = $MESON_LDFLAGS
cpp_args = $MESON_CXXFLAGS
cpp_link_args = $MESON_LDFLAGS
default_library = 'static'
prefix = '$prefix/$deps_dir'
libdir = 'lib'
bindir = 'bin'
includedir = 'include'
EOF
]

AC_OUTPUT

if test "$platform_os" = "darwin_embedded"; then
  if test "$use_platform" = "ios"; then
    simulator_sdk_path=[`$use_xcrun --sdk iphonesimulator --show-sdk-path`]
    echo -e "use simulator:\t $simulator_sdk_path"
  fi
fi

cp -vf target/config.site $prefix/$deps_dir/share
cp -vf target/config-binaddons.site $prefix/$tool_dir/share
cp -vf target/Toolchain.cmake $prefix/$deps_dir/share
cp -vf target/Toolchain_binaddons.cmake $prefix/$deps_dir/share
cp -vf native/config.site.native $prefix/$tool_dir/share/config.site
cp -vf native/Toolchain-Native.cmake $prefix/$tool_dir/share


echo -e "\n\n#------- configuration -------#"
echo -e "ccache:\t\t $use_ccache"
echo -e "build type:\t\t $build_type"
echo -e "build system:\t $use_build"
echo -e "build cpu:\t\t $use_buildcpu"
echo -e "build includes:\t $host_includes"
echo -e "toolchain:\t\t $use_toolchain"
echo -e "cpu:\t\t\t $use_cpu"
echo -e "host:\t\t $use_host"
echo -e "CC:\t\t $CC"
echo -e "CXX:\t\t $CXX"
echo -e "cflags:\t\t $platform_cflags"
echo -e "cxxflags:\t\t $platform_cxxflags"
echo -e "ldflags:\t\t $platform_ldflags"
echo -e "platform_includes:\t $platform_includes"
echo -e "ffmpeg options:\t $ffmpeg_options"
echo -e "prefix:\t\t $prefix"
echo -e "depends:\t\t $prefix/$deps_dir"
if test "$platform_os" = "android"; then
  echo -e "ndk-api-level:\t $use_ndk_api"
  echo -e "build-tools:\t $build_tools_path"
fi