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# 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 || is_win_host)
}
assert(!is_hermetic_clang || is_clang, "is_hermetic_clang requires is_clang")
if (is_linux_host) {
if (is_hermetic_clang) {
_hermetic_llvm_dir =
rebase_path("//buildtools/linux64/clang", root_build_dir)
linux_clang_bin = "$_hermetic_llvm_dir/bin/clang"
linux_clangxx_bin = "$_hermetic_llvm_dir/bin/clang++"
linux_clang_linker = "lld"
} else if (is_clang && !is_system_compiler) {
# Guess the path for the system clang.
# When is_system_compiler = true users neet to explicitly set cc / target_cc
# vars in the GN args."
_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_clang_linker = "gold"
}
} else if (is_mac_host && is_clang && !is_system_compiler) {
_mac_toolchain_dirs = exec_script("mac_find_llvm.py", [], "list lines")
# _mac_toolchain_dirs[0] contains the mac toolchain dir.
mac_clangrt_dir = _mac_toolchain_dirs[1]
} else if (is_win_host) {
if (is_hermetic_clang) {
# Use the toolchain pulled by //tools/install-build-deps. This tracks
# chromium's llvm dist.
_llvm_win_path = rebase_path("//buildtools/win/clang/bin", root_build_dir)
win_clang_bin = "${_llvm_win_path}\clang-cl.exe"
win_clangxx_bin = "${_llvm_win_path}\clang-cl.exe"
win_clang_linker = "${_llvm_win_path}\lld-link.exe"
} else {
# Assume clang-cl.exe / lld-link.exe are on the PATH. The user can always
# ovveride them by setting cc/cxx/linker GN variables.
# See //gn/standalone/toolchain/BUILD.gn.
win_clang_bin = "clang-cl.exe"
win_clangxx_bin = "clang-cl.exe"
win_clang_linker = "lld-link.exe"
}
}
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