{ "toolchain":
  { "type": "export"
  , "flexible_config": ["ARCH", "TARGET_ARCH", "TOOLCHAIN_CONFIG", "ENV"]
  , "target": "gcc-10.2.0"
  }
, "original_sources_and_patches":
  { "type": "install"
  , "dirs":
    [[["TREE", null, "."], "src"], [["@", "patches", "", "gcc-10"], "patches"]]
  }
, "patched_sources":
  { "type": ["@", "rules", "CC/foreign/shell", "data"]
  , "project": ["original_sources_and_patches"]
  , "cmds":
    [ "cp -r src/. ${DESTDIR}/."
    , "cd ${DESTDIR}"
    , "chmod -R +w *"
    , "patch -p1 < ${WORKDIR}/patches/gcc-10/detect-glibc-via-__GLIBC__.patch >/dev/null"
    , "for p in $(cat ${WORKDIR}/patches/gcc-10/reproducibility/series); do"
    , "  patch -p1 < ${WORKDIR}/patches/gcc-10/reproducibility/$p >/dev/null"
    , "done"
    ]
  , "out_dirs": ["."]
  }
, "patched_separate_sources":
  { "type": "install"
  , "dirs":
    [ ["patched_sources", "src"]
    , [["@", "gmp", "", "files"], "gmp"]
    , [["@", "mpc", "", "files"], "mpc"]
    , [["@", "mpfr", "", "files"], "mpfr"]
    ]
  }
, "binutils":
  { "type": ["@", "rules", "CC/foreign/shell", "data"]
  , "project": [["@", "binutils", "", "files"]]
  , "cmds":
    [ "export NJOBS=$(nproc --all 2>/dev/null || echo 1)"
    , "unset LDFLAGS"
    , "if [ -f /lib/ld-musl-$(uname -m).so.1 ]; then"
    , "  ln -s /lib/ld-musl-$(uname -m).so.1 ${TMPDIR}/ldd"
    , "  export PATH=$PATH:${TMPDIR}"
    , "fi"
    , "mkdir build"
    , "cd build"
    , "../configure --prefix=/ --disable-nls --enable-gprofng=no --disable-werror --enable-deterministic-archives >configure.log 2>&1 || (cat configure.log && exit 1)"
    , "${MAKE} -j${NJOBS} MAKEINFO=true >build.log 2>&1 || (cat configure.log build.log && exit 1)"
    , "${MAKE} -j${NJOBS} MAKEINFO=true DESTDIR=${DESTDIR} install-strip >>build.log 2>&1 || (cat configure.log build.log && exit 1)"
    , "find ${DESTDIR} -type f -name '*.la' -exec sed -i 's|'$(pwd)'|/build|g' {} \\;"
    ]
  , "out_dirs": ["."]
  }
, "gcc-10.2.0":
  { "type": ["@", "rules", "CC/foreign/shell", "data"]
  , "arguments_config": ["TOOLCHAIN_CONFIG"]
  , "project": ["patched_separate_sources"]
  , "localbase": ["binutils"]
  , "cmds":
    [ { "type": "join"
      , "$1":
        [ "HOST_SYSTEM_HDR_DIR='"
        , { "type": "lookup"
          , "key": "HOST_SYSTEM_HDR_DIR"
          , "map":
            { "type": "var"
            , "name": "TOOLCHAIN_CONFIG"
            , "default": {"type": "empty_map"}
            }
          , "default": ""
          }
        , "'"
        ]
      }
    , { "type": "join"
      , "$1":
        [ "HOST_SYSTEM_LIB_DIR='"
        , { "type": "lookup"
          , "key": "HOST_SYSTEM_LIB_DIR"
          , "map":
            { "type": "var"
            , "name": "TOOLCHAIN_CONFIG"
            , "default": {"type": "empty_map"}
            }
          , "default": ""
          }
        , "'"
        ]
      }
    , { "type": "join"
      , "$1":
        [ "HOST_DYNAMIC_LINKER='"
        , { "type": "lookup"
          , "key": "HOST_DYNAMIC_LINKER"
          , "map":
            { "type": "var"
            , "name": "TOOLCHAIN_CONFIG"
            , "default": {"type": "empty_map"}
            }
          , "default": ""
          }
        , "'"
        ]
      }
    , "export NJOBS=$(nproc --all 2>/dev/null || echo 1)"
    , "export PATH=${LOCALBASE}/bin:$PATH"
    , "export BUILD_ROOT_DIR=${ACTION_DIR}"
    , "unset CFLAGS LDFLAGS"
    , "CONF_ARGS="
    , "if [ -n \"$HOST_SYSTEM_HDR_DIR\" ]; then"
    , "  CONF_ARGS=\"$CONF_ARGS --with-sysroot=/ --with-native-system-header-dir=$HOST_SYSTEM_HDR_DIR\""
    , "fi"
    , "LINK_ARGS="
    , "if [ -n \"$HOST_SYSTEM_LIB_DIR\" ]; then"
    , "  export LIBRARY_PATH=\"$HOST_SYSTEM_LIB_DIR\""
    , "  LINK_ARGS=\"$LINK_ARGS -B$HOST_SYSTEM_LIB_DIR -L$HOST_SYSTEM_LIB_DIR\""
    , "  LINK_ARGS=\"$LINK_ARGS -Xlinker -rpath -Xlinker $HOST_SYSTEM_LIB_DIR\""
    , "fi"
    , "if [ -n \"$HOST_DYNAMIC_LINKER\" ]; then"
    , "  mv src/gcc/config src/gcc/config.orig"
    , "  cp -r src/gcc/config.orig src/gcc/config"
    , "  chmod -R +w src/gcc/config"
    , "  for h in src/gcc/config/*/*.h; do"
    , "    grep -q _DYNAMIC_LINKER \"$h\" || continue"
    , "    sed -i 's|\\(^#define [A-Z]*_DYNAMIC_LINKER[A-Z0-9]* *\"\\).*\"|\\1'$HOST_DYNAMIC_LINKER'\"|g' \"$h\""
    , "  done"
    , "fi"
    , "export LDFLAGS_FOR_TARGET=\"${LINK_ARGS}\""
    , "if [ -f /lib/ld-musl-$(uname -m).so.1 ]; then"
    , "  ln -s /lib/ld-musl-$(uname -m).so.1 ${TMPDIR}/ldd"
    , "  export PATH=$PATH:${TMPDIR}"
    , "fi"
    , "cp -r ${LOCALBASE}/. ${DESTDIR}/."
    , "chmod -R +w ${DESTDIR}/*"
    , "mv gmp mpc mpfr src/."
    , "cd src"
    , "export check_msgfmt=no   # do not use system's msgfmt, if available"
    , "./configure --prefix=/ --enable-checking=release --enable-languages=c,c++ --disable-multilib --disable-libsanitizer ${CONF_ARGS} >configure.log 2>&1 || (cat configure.log && exit 1)"
    , "${MAKE} -j${NJOBS} >build.log 2>&1 || (cat configure.log build.log && exit 1)"
    , "${MAKE} -j${NJOBS} DESTDIR=${DESTDIR} install-strip >>build.log 2>&1 || (cat configure.log build.log && exit 1)"
    , "cd ${DESTDIR}"
    , "strip ./bin/*"
    , "find . -type f -name '*.so*' -exec sh -c \"strip {} 2>/dev/null\" \\;"
    , "find . -type f -name '*.a' -exec sh -c \"strip -g {}\" \\;"
    , "find . -type f -name '*.o' -exec sh -c \"strip -g {}\" \\;"
    , "GCC_LIBDIR=\"lib/gcc/$(./bin/gcc -dumpmachine)/$(./bin/gcc -dumpfullversion -dumpversion)\""
    , "mv ${GCC_LIBDIR}/include-fixed ${TMPDIR}/"
    , "cp -rL ${TMPDIR}/include-fixed ${GCC_LIBDIR}/.   # resolve symlinks"
    , "if [ -n \"${LINK_ARGS}\" ]; then"
    , "  cd ${DESTDIR}/bin"
    , "  mv gcc gcc.real"
    , "  mv g++ g++.real"
    , "  printf '#!/bin/sh\\nexec $(dirname $0)/gcc.real %s \"$@\"' \"${LINK_ARGS}\" >gcc"
    , "  printf '#!/bin/sh\\nexec $(dirname $0)/g++.real %s \"$@\"' \"${LINK_ARGS}\" >g++"
    , "  chmod +x gcc g++"
    , "fi"
    ]
  , "out_dirs": ["."]
  }
}