gn/standalone/toolchain/llvm.gni

# Copyright (C) 2017 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import("//gn/standalone/sanitizers/vars.gni")

declare_args() {
  is_hermetic_clang = is_clang && is_linux_host
}

assert(!is_hermetic_clang || is_clang, "is_hermetic_clang requires is_clang")

declare_args() {
  if (is_linux_host) {
    if (is_hermetic_clang) {
      _hermetic_llvm_dir = rebase_path("//buildtools/clang", root_build_dir)
      linux_clang_bin = "$_hermetic_llvm_dir/bin/clang"
      linux_clangxx_bin = "$_hermetic_llvm_dir/bin/clang++"
      linux_clangrt_dir = "$_hermetic_llvm_dir/lib/clang/9.0.0/lib/linux"
      linux_clang_linker = "lld"
    } else if (is_clang) {
      # Guess the path for the system clang.
      find_llvm_out = exec_script("linux_find_llvm.py", [], "list lines")
      linux_llvm_dir = find_llvm_out[0]
      linux_clang_bin = find_llvm_out[1]
      linux_clangxx_bin = find_llvm_out[2]
      linux_clangrt_dir = "$linux_llvm_dir/lib/linux"
      linux_clang_linker = "gold"
    }
  } else if (is_mac) {
    mac_toolchain_dirs_ = exec_script("mac_find_llvm.py", [], "list lines")
    mac_toolchain_dir = mac_toolchain_dirs_[0]
    mac_clangrt_dir = mac_toolchain_dirs_[1]
  }
}