{ "toolchain":
  { "type": "configure"
  , "arguments_config": ["ARCH", "TARGET_ARCH", "BUILD_ARCH"]
  , "config":
    { "type": "if"
    , "cond":
      { "type": "=="
      , "$1":
        { "type": "var"
        , "name": "TARGET_ARCH"
        , "default": {"type": "var", "name": "ARCH"}
        }
      , "$2":
        { "type": "var"
        , "name": "BUILD_ARCH"
        , "default": {"type": "var", "name": "ARCH"}
        }
      }
    , "then": {"type": "empty_map"}
    , "else":
      { "type": "fail"
      , "msg": "clang-native does not support cross-compilation."
      }
    }
  , "target": "toolchain_native"
  }
, "toolchain_native":
  { "type": "export"
  , "flexible_config": ["ARCH", "TARGET_ARCH", "TOOLCHAIN_CONFIG", "ENV"]
  , "target": "clang-native"
  }
, "runlibs":
  { "type": "export"
  , "flexible_config": ["ARCH", "TARGET_ARCH", "TOOLCHAIN_CONFIG", "ENV"]
  , "target": "libstdc++"
  }
, "runlibs_libcxx":
  { "type": "export"
  , "flexible_config": ["ARCH", "TARGET_ARCH", "TOOLCHAIN_CONFIG", "ENV"]
  , "target": "libc++"
  }
, "original_sources_and_patches":
  { "type": "install"
  , "dirs":
    [ [["TREE", null, "."], "src"]
    , [["@", "patches", "", "clang-16"], "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/clang-16/libcxx-musl-support.patch >/dev/null"
    ]
  , "out_dirs": ["."]
  }
, "clang-native":
  { "type": ["@", "rules", "CC/foreign/shell", "data"]
  , "arguments_config": ["TOOLCHAIN_CONFIG"]
  , "project": ["patched_sources"]
  , "localbase": [["@", "binutils", "", "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"
      , "$1":
        [ "HOST_DYNAMIC_LINKER='"
        , { "type": "lookup"
          , "key": "HOST_DYNAMIC_LINKER"
          , "map":
            { "type": "var"
            , "name": "TOOLCHAIN_CONFIG"
            , "default": {"type": "empty_map"}
            }
          , "default": ""
          }
        , "'"
        ]
      }
    , "NJOBS=$(nproc --all 2>/dev/null || echo 1)"
    , "HOST_TRIPLE=$(${CC} -dumpmachine)"
    , "GCC_TOOLCHAIN=$(dirname ${CC})/.."
    , "export PATH=${LOCALBASE}/bin:$PATH"
    , "export PKG_CONFIG=false"
    , "export LD_LIBRARY_PATH=\"${GCC_TOOLCHAIN}/lib64\""
    , "unset LDFLAGS"
    , "CONF_ARGS="
    , "INCL_ARGS="
    , "if [ -n \"$HOST_SYSTEM_HDR_DIR\" ]; then"
    , "  CONF_ARGS=\"-DC_INCLUDE_DIRS=$HOST_SYSTEM_HDR_DIR\""
    , "  INCL_ARGS=\"-I$HOST_SYSTEM_HDR_DIR\""
    , "fi"
    , "LINK_ARGS="
    , "if [ -n \"$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"
    , "  LINK_ARGS=\"$LINK_ARGS -Xlinker --dynamic-linker -Xlinker $HOST_DYNAMIC_LINKER\""
    , "fi"
    , "cp -r ${LOCALBASE}/. ${DESTDIR}/."
    , "chmod -R +w ${DESTDIR}/*"
    , "mkdir build"
    , { "type": "join"
      , "separator": " "
      , "$1":
        [ "cmake"
        , "-B"
        , "build"
        , "-S"
        , "llvm"
        , "${CONF_ARGS}"
        , "-DLLVM_USE_FOLDERS=OFF"
        , "-DLLVM_INCLUDE_DOCS=OFF"
        , "-DLLVM_INCLUDE_TESTS=OFF"
        , "-DLLVM_INSTALL_TOOLCHAIN_ONLY=ON"
        , { "type": "join"
          , "$1":
            [ "-DLLVM_ENABLE_PROJECTS="
            , { "type": "join_cmd"
              , "$1":
                [ { "type": "join"
                  , "separator": ";"
                  , "$1":
                    { "type": "++"
                    , "$1":
                      [ ["clang"]
                      , { "type": "if"
                        , "cond":
                          { "type": "lookup"
                          , "key": "INCLUDE_LINTER"
                          , "map":
                            { "type": "var"
                            , "name": "TOOLCHAIN_CONFIG"
                            , "default": {"type": "empty_map"}
                            }
                          }
                        , "then": ["clang-tools-extra"]
                        }
                      ]
                    }
                  }
                ]
              }
            ]
          }
        , "-DLLVM_ENABLE_RUNTIMES='libcxx;libcxxabi;libunwind'"
        , "-DLLVM_TARGETS_TO_BUILD=X86"
        , "-DLLVM_PARALLEL_LINK_JOBS=1"
        , "-DCMAKE_BUILD_TYPE=Release"
        , "-DCMAKE_INSTALL_PREFIX="
        , "-DLLVM_HOST_TRIPLE=${HOST_TRIPLE}"
        , "-DLLVM_NATIVE_TARGET=ON"
        , "-DLIBCXXABI_ENABLE_ASSERTIONS=OFF"
        , "-DLIBUNWIND_ENABLE_ASSERTIONS=OFF"
        , ">configure.log 2>&1 || (cat configure.log && exit 1)"
        ]
      }
    , "cmake --build build --target clang -j${NJOBS} >build.log 2>&1 || (cat configure.log build.log && exit 1)"
    , "export LDFLAGS=\"--gcc-toolchain=${GCC_TOOLCHAIN} ${LINK_ARGS}\""
    , "cmake --build build --target all -j${NJOBS} >>build.log 2>&1 || (cat configure.log build.log && exit 1)"
    , "cmake --build build --target install -j${NJOBS} >>build.log 2>&1 || (cat configure.log build.log && exit 1)"
    , "cd ${DESTDIR}"
    , "strip ./bin/* 2>/dev/null || true"
    , "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 {}\" \\;"
    , "cp -r ${GCC_TOOLCHAIN}/include/c++ ${DESTDIR}/include/."
    , "cp -r ${GCC_TOOLCHAIN}/lib/gcc ${DESTDIR}/lib/."
    , "cp -r ${GCC_TOOLCHAIN}/lib64/. ${DESTDIR}/lib/."
    , "ln -s lib ${DESTDIR}/lib64"
    , "if [ -n \"${INCL_ARGS}${LINK_ARGS}\" ]; then"
    , "  cd ${DESTDIR}/bin"
    , "  mv clang clang.real"
    , "  mv clang++ clang++.real"
    , "  printf '#!/bin/sh\\nexec $(dirname $0)/clang.real %s \"$@\"' \"${INCL_ARGS} ${LINK_ARGS}\" >clang"
    , "  printf '#!/bin/sh\\nexec $(dirname $0)/clang++.real %s \"$@\"' \"${INCL_ARGS} ${LINK_ARGS}\" >clang++"
    , "  chmod +x clang clang++"
    , "fi"
    ]
  , "out_dirs": ["."]
  }
, "libstdc++":
  { "type": ["@", "rules", "CC/prebuilt", "library"]
  , "name": ["libstdc++"]
  , "lib": ["libstdc++_files"]
  , "deps": ["libgcc_s"]
  }
, "libc++":
  { "type": ["@", "rules", "CC/prebuilt", "library"]
  , "name": ["libc++"]
  , "lib": ["libc++_files"]
  , "deps": ["libgcc_s", "libatomic", "libc++abi"]
  }
, "libc++abi":
  { "type": ["@", "rules", "CC/prebuilt", "library"]
  , "name": ["libc++abi"]
  , "lib": ["libc++abi_files"]
  }
, "libgcc_s":
  { "type": ["@", "rules", "CC/prebuilt", "library"]
  , "name": ["libgcc_s"]
  , "lib": ["libgcc_s_files"]
  }
, "libatomic":
  { "type": ["@", "rules", "CC/prebuilt", "library"]
  , "name": ["libatomic"]
  , "lib": ["libatomic_files"]
  }
, "libstdc++_files":
  { "type": ["@", "rules", "shell", "cmds"]
  , "deps": ["toolchain"]
  , "cmds": ["cp -L lib64/libstdc++.so.6 ."]
  , "outs": ["libstdc++.so.6"]
  }
, "libc++_files":
  { "type": ["@", "rules", "shell", "cmds"]
  , "deps": ["toolchain"]
  , "cmds": ["cp -L lib/$(./bin/clang -dumpmachine)/libc++.so.1 ."]
  , "outs": ["libc++.so.1"]
  }
, "libc++abi_files":
  { "type": ["@", "rules", "shell", "cmds"]
  , "deps": ["toolchain"]
  , "cmds": ["cp -L lib/$(./bin/clang -dumpmachine)/libc++abi.so.1 ."]
  , "outs": ["libc++abi.so.1"]
  }
, "libgcc_s_files":
  { "type": ["@", "rules", "shell", "cmds"]
  , "deps": ["toolchain"]
  , "cmds": ["cp -L lib64/libgcc_s.so.1 ."]
  , "outs": ["libgcc_s.so.1"]
  }
, "libatomic_files":
  { "type": ["@", "rules", "shell", "cmds"]
  , "deps": ["toolchain"]
  , "cmds": ["cp -L lib64/libatomic.so.1 ."]
  , "outs": ["libatomic.so.1"]
  }
}