build/toolchain/mac/BUILD.gn

# Copyright (c) 2013 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.

# TODO(brettw) Use "gcc_toolchain.gni" like the Linux toolchains. This requires
# some enhancements since the commands on Mac are slightly different than on
# Linux.

import("../goma.gni")

# Should only be running on Mac.
assert(is_mac || is_ios)

import("//build/toolchain/clang.gni")
import("//build/toolchain/goma.gni")

if (is_clang) {
  cc = rebase_path("//third_party/llvm-build/Release+Asserts/bin/clang",
                   root_build_dir)
  cxx = rebase_path("//third_party/llvm-build/Release+Asserts/bin/clang++",
                    root_build_dir)
} else {
  cc = "gcc"
  cxx = "g++"
}
ld = cxx

# This will copy the gyp-mac-tool to the build directory. We pass in the source
# file of the win tool.
gyp_mac_tool_source =
  rebase_path("//tools/gyp/pylib/gyp/mac_tool.py", root_build_dir)
exec_script("setup_toolchain.py", [ gyp_mac_tool_source ], "value")

# Shared toolchain definition. Invocations should set toolchain_os to set the
# build args in this definition.
template("mac_clang_toolchain") {
  toolchain(target_name) {
    assert(defined(invoker.cc),
           "mac_clang_toolchain() must specify a \"cc\" value")
    assert(defined(invoker.cxx),
           "mac_clang_toolchain() must specify a \"cxx\" value")
    assert(defined(invoker.ld),
           "mac_clang_toolchain() must specify a \"ld\" value")
    assert(defined(invoker.toolchain_os),
           "mac_clang_toolchain() must specify a \"toolchain_os\"")

    # We can't do string interpolation ($ in strings) on things with dots in
    # them. To allow us to use $cc below, for example, we create copies of
    # these values in our scope.
    cc = invoker.cc
    cxx = invoker.cxx
    ld = invoker.ld

    # Make these apply to all tools below.
    lib_prefix = "-l"
    lib_dir_prefix="-L"

    tool("cc") {
      command = "$cc -MMD -MF \$out.d \$defines \$includes \$cflags \$cflags_c \$cflags_pch_c -c \$in -o \$out"
      description = "CC \$out"
      depfile = "\$out.d"
      depsformat = "gcc"
    }
    tool("cxx") {
      command = "$cxx -MMD -MF \$out.d \$defines \$includes \$cflags \$cflags_cc \$cflags_pch_cc -c \$in -o \$out"
      description = "CXX \$out"
      depfile = "\$out.d"
      depsformat = "gcc"
    }
    tool("objc") {
      command = "$cc -MMD -MF \$out.d \$defines \$includes \$cflags \$cflags_c \$cflags_objc \$cflags_pch_objc -c \$in -o \$out"
      description = "OBJC \$out"
      depfile = "\$out.d"
      depsformat = "gcc"
    }
    tool("objcxx") {
      command = "$cxx -MMD -MF \$out.d \$defines \$includes \$cflags \$cflags_cc \$cflags_objcc \$cflags_pch_objcc -c \$in -o \$out"
      description = "OBJCXX \$out"
      depfile = "\$out.d"
      depsformat = "gcc"
    }
    tool("alink") {
      command = "rm -f \$out && ./gyp-mac-tool filter-libtool libtool \$libtool_flags -static -o \$out \$in \$postbuilds"
      description = "LIBTOOL-STATIC \$out"
    }
    tool("solink") {
      command = "if [ ! -e \$lib -o ! -e \${lib}.TOC ] || otool -l \$lib | grep -q LC_REEXPORT_DYLIB ; then $ld -shared \$ldflags -o \$lib -Wl,-filelist,\$rspfile \$solibs \$libs \$postbuilds && { otool -l \$lib | grep LC_ID_DYLIB -A 5; nm -gP \$lib | cut -f1-2 -d' ' | grep -v U\$\$; true; } > \${lib}.TOC; else $ld -shared \$ldflags -o \$lib \$in \$solibs \$libs \$postbuilds && { otool -l \$lib | grep LC_ID_DYLIB -A 5; nm -gP \$lib | cut -f1-2 -d' ' | grep -v U\$\$; true; } > \${lib}.tmp && if ! cmp -s \${lib}.tmp \${lib}.TOC; then mv \${lib}.tmp \${lib}.TOC ; fi; fi"
      description = "SOLINK \$lib"
      rspfile = "\$out.rsp"
      rspfile_content = "\$in_newline"
      #pool = "link_pool"
      restat = "1"
    }
    tool("link") {
      command = "$ld \$ldflags -o \$out -Wl,-filelist,\$rspfile \$solibs \$libs \$postbuilds"
      description = "LINK \$out"
      rspfile = "\$out.rsp"
      rspfile_content = "\$in_newline"
      #pool = "link_pool"
    }
    #tool("infoplist") {
    #  command = "$cc -E -P -Wno-trigraphs -x c \$defines \$in -o \$out && plutil -convert xml1 \$out \$out"
    #  description = "INFOPLIST \$out"
    #}
    #tool("mac_tool") {
    #  command = "\$env ./gyp-mac-tool \$mactool_cmd \$in \$out"
    #  description = "MACTOOL \$mactool_cmd \$in"
    #}
    #tool("package_framework") {
    #  command = "./gyp-mac-tool package-framework \$out \$version \$postbuilds && touch \$out"
    #  description = "PACKAGE FRAMEWORK \$out, POSTBUILDS"
    #}
    tool("stamp") {
      command = "\${postbuilds}touch \$out"
      description = "STAMP \$out"
    }
    tool("copy") {
      command = "ln -f \$in \$out 2>/dev/null || (rm -rf \$out && cp -af \$in \$out)"
      description = "COPY \$in \$out"
    }

    toolchain_args() {
      os = invoker.toolchain_os
    }
  }
}

# Toolchain representing the target build (either mac or iOS).
mac_clang_toolchain("clang") {
  toolchain_os = os
}

# This toolchain provides a way for iOS target compiles to reference targets
# compiled for the host system. It just overrides the OS back to "mac".
mac_clang_toolchain("host_clang") {
  toolchain_os = "mac"
}