# 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 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" } 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_mips-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_arm-sysroot" } else if (current_cpu == "arm64") { sysroot = "$target_sysroot_dir/debian_bullseye_arm64-sysroot" } else if (current_cpu == "riscv64") { sysroot = "$target_sysroot_dir/debian_sid_riscv64-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=$_script_arch") } } else if (is_mac) { import("//build/config/mac/mac_sdk.gni") sysroot = mac_sdk_path } else if (is_ios) { import("//build/config/ios/ios_sdk.gni") sysroot = ios_sdk_path } else if (is_fuchsia) { if (current_cpu == "arm64" || current_cpu == "x64") { sysroot = "//third_party/fuchsia-sdk/sdk/arch/$current_cpu/sysroot" } } }