1# Copyright 2017 The Chromium Authors 2# Use of this source code is governed by a BSD-style license that can be 3# found in the LICENSE file. 4 5import("//build/config/gclient_args.gni") 6 7# The NaCl sandbox and toolchain currently only support x86-32, x86-64 8# and ARM32. 9# 10# The NaCl sandbox itself supports MIPS32, but the Clang toolchain 11# support for that is no longer up-to-date, so we don't include that 12# in the list of CPU architectures to enable NaCl on. 13# 14# NaCl is also supported on ARM64 Chrome OS, where the ARM32 NaCl 15# sandbox is used. 16# NaCl works on non-Chrome-OS ARM64 Linux, but we don't enable it by default in 17# that case. 18_cpu_is_supported = 19 target_cpu == "x86" || target_cpu == "x64" || target_cpu == "arm" || 20 (target_cpu == "arm64" && target_os == "chromeos") 21 22declare_args() { 23 # Enables Native Client support. 24 # 25 # NaCl is only supported on ChromeOS. 26 enable_nacl = checkout_nacl && _cpu_is_supported && target_os == "chromeos" 27} 28 29assert(!enable_nacl || checkout_nacl) 30