# Copyright (c) 2022, the Dart project authors.  Please see the AUTHORS file
# for details. All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.

import("../../sdk_args.gni")

config("binaryen_flags") {
  cflags = []
  if (is_clang || !is_win) {
    # Clang or GCC
    cflags += [
      "-Wno-deprecated-declarations",
      "-Wno-unused-but-set-parameter",
      "-Wno-unused-function",
      "-Wno-unused-variable",
      "-Wno-pessimizing-move",
      "-Wno-sign-compare",
      "-Wno-range-loop-construct",
    ]

    if (is_clang) {
      # Clang
      cflags += [
        "-Wno-header-hygiene",
        "-Wno-unused-private-field",
        "-Wno-inconsistent-missing-override",
        "-Wno-unknown-warning-option",
      ]
    } else {
      # GCC
      cflags += [
        "-Wno-redundant-move",
        "-Wno-uninitialized",
        "-Wno-init-list-lifetime",

        # Bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86465#c16 triggered by
        # https://github.com/WebAssembly/binaryen/blob/cdb7aeab40b4c522de20b242019f7e88641445d5/src/wasm/wasm-type.cpp#L530.
        "-Wno-maybe-uninitialized",
      ]
    }
  }

  if (is_win) {
    libs = [ "shell32.lib" ]
  }
}

action("generate_needed_files") {
  script = "generate_needed_files.py"

  inputs = [
    "src/src/passes/wasm-intrinsics.wat",
    "src/src/passes/WasmIntrinsics.cpp.in",
    "src/CMakeLists.txt",
    "src/config.h.in",
  ]

  args = [
    rebase_path("src/src/passes/wasm-intrinsics.wat", root_build_dir),
    rebase_path("src/src/passes/WasmIntrinsics.cpp.in", root_build_dir),
    rebase_path("$target_gen_dir/WasmIntrinsics.cpp", root_build_dir),

    rebase_path("src/CMakeLists.txt", root_build_dir),
    rebase_path("src/config.h.in", root_build_dir),
    rebase_path("$target_gen_dir/config.h", root_build_dir),
  ]
  outputs = [
    "$target_gen_dir/WasmIntrinsics.cpp",
    "$target_gen_dir/config.h",
  ]
}

source_set("binaryen_sources") {
  src_dirs = [
    "src/src/analysis",
    "src/src/asmjs",
    "src/src/cfg",
    "src/src/emscripten-optimizer",
    "src/src/ir",
    "src/src/parser",
    "src/src/passes",
    "src/src/support",
    "src/src/tools/fuzzing",
    "src/src/wasm",
    "src/third_party/llvm-project",
  ]

  # We avoid listing all sources manually, this means when updating
  # binaryen in DEPS (or manually editing) one has to ensure to
  # re-run GN in DEPS to ensure new dependencies are picked up.
  # (this lowers the maintenance burden of GN build support for binaryen)
  sources = []
  foreach(src_dir, src_dirs) {
    foreach(src_file,
            exec_script("list_sources.py",
                        [ rebase_path(src_dir, root_build_dir) ],
                        "list lines",
                        [ "$default_git_folder/logs/HEAD" ])) {
      sources += [ "$src_dir/$src_file" ]
    }
  }

  include_dirs = [
    "src/src",
    "src/third_party/llvm-project/include",
  ]

  # Ensure WasmIntrinsics.cpp/config.h files are generated.
  deps = [ ":generate_needed_files" ]

  # Ensure generated WasmIntrinsics.cpp file is included in build.
  sources += [ "$target_gen_dir/WasmIntrinsics.cpp" ]

  # Ensure generated config.h file is include path.
  include_dirs += [ "$target_gen_dir" ]

  configs += [
    "//build/config/compiler:enable_exceptions",
    ":binaryen_flags",
  ]
}

template("wasm_tool") {
  executable(target_name) {
    sources = [ string_join("",
                            [
                              "src/src/tools/",
                              target_name,
                              ".cpp",
                            ]) ]
    include_dirs = [ "src/src" ]
    deps = [ ":binaryen_sources" ]
    forward_variables_from(invoker, "*")

    configs += [
      "//build/config/compiler:enable_exceptions",
      ":binaryen_flags",
    ]
  }
}

wasm_tool("wasm-opt") {
}
wasm_tool("wasm-shell") {
}
wasm_tool("wasm-metadce") {
}
wasm_tool("wasm-emscripten-finalize") {
}
wasm_tool("wasm-as") {
}
wasm_tool("wasm-dis") {
}
wasm_tool("wasm-ctor-eval") {
}
wasm_tool("wasm-reduce") {
}
wasm_tool("wasm-fuzz-types") {
}
wasm_tool("wasm2js") {
}

group("binaryen_tools") {
  deps = [
    ":wasm-as",
    ":wasm-ctor-eval",
    ":wasm-dis",
    ":wasm-emscripten-finalize",
    ":wasm-fuzz-types",
    ":wasm-metadce",
    ":wasm-opt",
    ":wasm-reduce",
    ":wasm-shell",
    ":wasm2js",
  ]
}