build/BUILD.gn

# Copyright 2016 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

################################################################################
# DEFAULT BUILD CONFIGURATION
################################################################################

config("debug") {
}

config("release") {
  defines = [ "NDEBUG" ]

  if (is_mac) {
    cflags = [ "-O3" ]
    ldflags = [ "-Wl,-dead_strip" ]
  }
}

config("default") {
  if (is_mac) {
    cflags = [
      "-Wall",
      "-Wendif-labels",
      "-Werror",
      "-Wextra",
      "-Wno-missing-field-initializers",
      "-Wno-unused-parameter",
      "-Wsign-compare",
      "-fno-rtti",
      "-fno-strict-aliasing",  # See https://crbug.com/32204
      "-fobjc-call-cxx-cdtors",
      "-fstack-protector-all",  # Implies -fstack-protector
      "-fvisibility-inlines-hidden",
      "-fvisibility=hidden",
    ]

    cflags_c = [ "-std=c99" ]
    cflags_cc = [ "-std=c++11" ]
    cflags_objc = cflags_c
    cflags_objcc = cflags_cc

    if (is_clang) {
      cflags += [
        "-Wexit-time-destructors",
        "-Wheader-hygiene",
        "-Wnewline-eof",
        "-Wstring-conversion",
      ]
    }
  }

  if (is_debug) {
    configs = [ ":debug" ]
  } else {
    configs = [ ":release" ]
  }
}

################################################################################
# TOOLCHAIN DEFINITIONS
################################################################################

toolchain("gcc_like_toolchain") {
  if (is_clang) {
    cc = "clang"
    cxx = "clang++"
  } else {
    cc = "gcc"
    cxx = "g++"
  }

  tool("cc") {
    depfile = "{{output}}.d"
    command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}"
    depsformat = "gcc"
    description = "CXX {{output}}"
    outputs = [
      "{{target_out_dir}}/{{source_name_part}}.o",
    ]
  }

  tool("cxx") {
    depfile = "{{output}}.d"
    command = "$cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} -c {{source}} -o {{output}}"
    depsformat = "gcc"
    description = "CXX {{output}}"
    outputs = [
      "{{target_out_dir}}/{{source_name_part}}.o",
    ]
  }

  tool("objc") {
    depfile = "{{output}}.d"
    command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_objc}} -c {{source}} -o {{output}}"
    depsformat = "gcc"
    description = "OBJC {{output}}"
    outputs = [
      "{{target_out_dir}}/{{source_name_part}}.o",
    ]
  }

  tool("objcxx") {
    depfile = "{{output}}.d"
    command = "$cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_objcc}} -c {{source}} -o {{output}}"
    depsformat = "gcc"
    description = "OBJCXX {{output}}"
    outputs = [
      "{{target_out_dir}}/{{source_name_part}}.o",
    ]
  }

  tool("alink") {
    command = "libtool -static {{arflags}} -o {{output}} {{inputs}}"
    description = "LIBTOOL-STATIC {{output}}"
    default_output_dir = "{{target_out_dir}}"
    default_output_extension = ".a"
    output_prefix = "lib"
    outputs = [
      "{{output_dir}}/{{target_output_name}}{{output_extension}}",
    ]
  }

  tool("stamp") {
    command = "touch {{output}}"
    description = "STAMP {{output}}"
  }
}

toolchain("msvc_toolchain") {
  # TODO(rsesek): Not it!
}