| # Copyright 2016 The Fuchsia Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| declare_args() { |
| # The absolute path of the sysroot that is used with the target toolchain. |
| target_sysroot = "" |
| } |
| |
| if (current_os == target_os && target_sysroot != "") { |
| sysroot = target_sysroot |
| } else if (is_fuchsia) { |
| import("//zircon/public/sysroot/cpp.gni") |
| sysroot = cpp_sysroot_dir |
| } else if (is_linux) { |
| sysroot = "//prebuilt/third_party/sysroot/linux" |
| } else if (is_mac) { |
| import("//build/config/mac/mac_sdk.gni") |
| sysroot = mac_sdk_path |
| } else if (is_win) { |
| # Building C/C++ on Windows requires a complicated SDK setup |
| # and cannot be simplified as a single sysroot directory. Leave |
| # it empty. |
| sysroot = "" |
| } else if (current_cpu == "wasm32") { |
| sysroot = "" |
| } else { |
| # For other platforms that are not currently supported, do not define `sysroot`. |
| # Fail the GN and notify user. |
| assert( |
| false, |
| "$current_os is unsupported, no sysroot is defined for toolchain $current_toolchain") |
| } |
