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# 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.
# This header file defines the "sysroot" variable which is the absolute path
# of the sysroot. If no sysroot applies, the variable will be an empty string.
import("//build/config/chrome_build.gni")
declare_args() {
# The absolute path of the sysroot that is applied when compiling using
# the target toolchain.
target_sysroot = ""
# The absolute path to directory containing linux sysroot images
target_sysroot_dir = "//build/linux"
use_sysroot = current_cpu == "x86" || current_cpu == "x64" ||
current_cpu == "arm" || current_cpu == "arm64" ||
current_cpu == "mipsel" || current_cpu == "mips64el"
}
if (current_os == target_os && current_cpu == target_cpu &&
target_sysroot != "") {
sysroot = target_sysroot
} else if (is_android) {
import("//build/config/android/config.gni")
# Android uses unified headers, and thus a single compile time sysroot
sysroot = "$android_ndk_root/sysroot"
} else if (is_linux && use_sysroot) {
# By default build against a sysroot image downloaded from Cloud Storage
# during gclient runhooks.
if (current_cpu == "x64") {
sysroot = "$target_sysroot_dir/debian_sid_amd64-sysroot"
} else if (current_cpu == "x86") {
sysroot = "$target_sysroot_dir/debian_sid_i386-sysroot"
} else if (current_cpu == "mipsel") {
sysroot = "$target_sysroot_dir/debian_sid_mips-sysroot"
} else if (current_cpu == "mips64el") {
sysroot = "$target_sysroot_dir/debian_sid_mips64el-sysroot"
} else if (current_cpu == "arm") {
sysroot = "$target_sysroot_dir/debian_sid_arm-sysroot"
} else if (current_cpu == "arm64") {
sysroot = "$target_sysroot_dir/debian_sid_arm64-sysroot"
} else {
assert(false, "No linux sysroot for cpu: $target_cpu")
}
if (sysroot != "") {
_script_arch = current_cpu
if (_script_arch == "x86") {
_script_arch = "i386"
} else if (_script_arch == "x64") {
_script_arch = "amd64"
}
assert(
exec_script("//build/dir_exists.py",
[ rebase_path(sysroot) ],
"string") == "True",
"Missing sysroot ($sysroot). To fix, run: build/linux/sysroot_scripts/install-sysroot.py --arch=$_script_arch")
}
} else if (is_mac) {
import("//build/config/mac/mac_sdk.gni")
sysroot = mac_sdk_path
} else if (is_ios) {
import("//build/config/ios/ios_sdk.gni")
sysroot = ios_sdk_path
} else if (is_fuchsia) {
import("//build/config/fuchsia/config.gni")
if (current_cpu == "arm64" || current_cpu == "x64") {
sysroot = fuchsia_sdk + "/arch/$current_cpu/sysroot"
} else {
sysroot = ""
}
} else {
sysroot = ""
}
if (is_android) {
# Android uses unified headers in NDK r16 and later, meaning that the
# compile time sysroot and link time sysroot are different
link_sysroot = sysroot
if (current_cpu == "arm") {
link_sysroot = "$android_ndk_root/$arm_android_sysroot_subdir"
} else if (current_cpu == "arm64") {
link_sysroot = "$android_ndk_root/$arm64_android_sysroot_subdir"
} else if (current_cpu == "x86") {
link_sysroot = "$android_ndk_root/$x86_android_sysroot_subdir"
} else if (current_cpu == "x64") {
link_sysroot = "$android_ndk_root/$x86_64_android_sysroot_subdir"
} else if (current_cpu == "mipsel") {
link_sysroot = "$android_ndk_root/$mips_android_sysroot_subdir"
} else if (current_cpu == "mips64el") {
link_sysroot = "$android_ndk_root/$mips64_android_sysroot_subdir"
} else {
assert(false, "No android link sysroot for cpu: $target_cpu")
}
} else {
link_sysroot = sysroot
}
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