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# Copyright 2013 The Chromium Authors
# 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.
declare_args() {
# The path of the sysroot that is applied when compiling using the target
# toolchain.
target_sysroot = ""
# The path to directory containing linux sysroot images.
target_sysroot_dir = "//build/linux"
# The path of the sysroot for the current toolchain. If empty, default
# sysroot is used.
sysroot = ""
# Controls default is_linux sysroot. If set to true, and sysroot
# is empty, default sysroot is calculated.
use_sysroot =
current_cpu == "x86" || current_cpu == "x64" || current_cpu == "arm" ||
current_cpu == "arm64" || current_cpu == "mipsel" ||
current_cpu == "mips64el" || (current_cpu == "riscv64" && is_android)
}
if (sysroot == "") {
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 = "$android_toolchain_root/sysroot"
} else if ((is_linux || is_chromeos) && use_sysroot) {
# By default build against a sysroot image downloaded from Cloud Storage
# during gclient runhooks.
if (current_cpu == "x64") {
sysroot = "$target_sysroot_dir/debian_bullseye_amd64-sysroot"
} else if (current_cpu == "x86") {
sysroot = "$target_sysroot_dir/debian_bullseye_i386-sysroot"
} else if (current_cpu == "mipsel") {
sysroot = "$target_sysroot_dir/debian_bullseye_mipsel-sysroot"
} else if (current_cpu == "mips64el") {
sysroot = "$target_sysroot_dir/debian_bullseye_mips64el-sysroot"
} else if (current_cpu == "arm") {
sysroot = "$target_sysroot_dir/debian_bullseye_armhf-sysroot"
} else if (current_cpu == "arm64") {
sysroot = "$target_sysroot_dir/debian_bullseye_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=$_script_arch")
}
} else if (is_mac) {
import("//build/config/mac/mac_sdk.gni")
sysroot = mac_sdk_path
} else if (is_ios) {
import("//build/config/ios/ios_sdk.gni")
sysroot = ios_sdk_path
} else if (is_fuchsia) {
import("//build/config/fuchsia/gn_configs.gni")
sysroot = "${fuchsia_arch_root}/sysroot"
}
}
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