MarkdownLog/Build-Project/GN/Demo/build/toolchain/BUILD.gn

# Copyright 2014 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.

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

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

  tool("alink") {
    command = "ar rcs {{output}} {{inputs}}"
    description = "AR {{target_output_name}}{{output_extension}}"

    outputs =
        [ "{{target_out_dir}}/{{target_output_name}}{{output_extension}}" ]
    default_output_extension = ".a"
    output_prefix = "lib"
  }

  tool("solink") {
    soname = "{{target_output_name}}{{output_extension}}"  # e.g. "libfoo.so".
    sofile = "{{output_dir}}/$soname"
    rspfile = soname + ".rsp"
    if (is_mac) {
      os_specific_option = "-install_name @executable_path/$sofile"
      rspfile_content = "{{inputs}} {{solibs}} {{libs}}"
    } else {
      os_specific_option = "-Wl,-soname=$soname"
      rspfile_content = "-Wl,--whole-archive {{inputs}} {{solibs}} -Wl,--no-whole-archive {{libs}}"
    }

    command = "g++ -shared {{ldflags}} -o $sofile $os_specific_option @$rspfile"

    description = "SOLINK $soname"

    # Use this for {{output_extension}} expansions unless a target manually
    # overrides it (in which case {{output_extension}} will be what the target
    # specifies).
    default_output_extension = ".so"

    # Use this for {{output_dir}} expansions unless a target manually overrides
    # it (in which case {{output_dir}} will be what the target specifies).
    default_output_dir = "{{root_out_dir}}"

    outputs = [ sofile ]
    link_output = sofile
    depend_output = sofile
    output_prefix = "lib"
  }

  tool("link") {
    outfile = "{{target_output_name}}{{output_extension}}"
    rspfile = "$outfile.rsp"
    if (is_mac) {
      command = "g++ {{ldflags}} -o $outfile @$rspfile {{solibs}} {{libs}}"
    } else {
      command = "g++ {{ldflags}} -o $outfile -Wl,--start-group @$rspfile {{solibs}} -Wl,--end-group {{libs}}"
    }
    description = "LINK $outfile"
    default_output_dir = "{{root_out_dir}}"
    rspfile_content = "{{inputs}}"
    outputs = [ outfile ]

    print("link tool")
  }

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

  tool("copy") {
    command = "cp -af {{source}} {{output}}"
    description = "COPY {{source}} {{output}}"
  }
}