| Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1 | # Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| 2 | # Use of this source code is governed by a BSD-style license that can be |
| 3 | # found in the LICENSE file. |
| 4 | |
| 5 | # This header file defines the "sysroot" variable which is the absolute path |
| 6 | # of the sysroot. If no sysroot applies, the variable will be an empty string. |
| 7 | |
| 8 | import("//build/config/chrome_build.gni") |
| 9 | |
| 10 | declare_args() { |
| 11 | # The absolute path of the sysroot that is applied when compiling using |
| 12 | # the target toolchain. |
| 13 | target_sysroot = "" |
| 14 | use_sysroot = true |
| 15 | } |
| 16 | |
| 17 | if (current_os == target_os && current_cpu == target_cpu && |
| 18 | target_sysroot != "") { |
| 19 | sysroot = target_sysroot |
| 20 | } else if (is_android) { |
| 21 | import("//build/config/android/config.gni") |
| 22 | if (current_cpu == "x86") { |
| 23 | sysroot = "$android_ndk_root/$x86_android_sysroot_subdir" |
| 24 | } else if (current_cpu == "arm") { |
| 25 | sysroot = "$android_ndk_root/$arm_android_sysroot_subdir" |
| 26 | } else if (current_cpu == "mipsel") { |
| 27 | sysroot = "$android_ndk_root/$mips_android_sysroot_subdir" |
| 28 | } else if (current_cpu == "x64") { |
| 29 | sysroot = "$android_ndk_root/$x86_64_android_sysroot_subdir" |
| 30 | } else if (current_cpu == "arm64") { |
| 31 | sysroot = "$android_ndk_root/$arm64_android_sysroot_subdir" |
| 32 | } else if (current_cpu == "mips64") { |
| 33 | sysroot = "$android_ndk_root/$mips64_android_sysroot_subdir" |
| 34 | } else { |
| 35 | sysroot = "" |
| 36 | } |
| 37 | } else if (is_linux && !is_chromeos && use_sysroot) { |
| 38 | # By default build against a sysroot image downloaded from Cloud Storage |
| 39 | # during gclient runhooks. |
| 40 | if (current_cpu == "x64") { |
| 41 | sysroot = "//build/linux/debian_wheezy_amd64-sysroot" |
| 42 | } else if (current_cpu == "x86") { |
| 43 | sysroot = "//build/linux/debian_wheezy_i386-sysroot" |
| 44 | } else if (current_cpu == "mipsel") { |
| 45 | sysroot = "//build/linux/debian_wheezy_mips-sysroot" |
| 46 | } else if (current_cpu == "arm") { |
| 47 | sysroot = "//build/linux/debian_wheezy_arm-sysroot" |
| 48 | } else { |
| 49 | # Any other builds don't use a sysroot. |
| 50 | sysroot = "" |
| 51 | } |
| 52 | |
| 53 | if (sysroot != "") { |
| 54 | # Our sysroot images only contains gcc 4.6 headers, but chromium requires |
| 55 | # gcc 4.9. Clang is able to detect and work with the 4.6 headers while |
| 56 | # gcc is not. This check can be removed if we ever update to a more modern |
| 57 | # sysroot. |
| 58 | assert(is_clang, "sysroot images require clang (try use_sysroot=false)") |
| 59 | |
| 60 | _script_arch = current_cpu |
| 61 | if (_script_arch == "x86") { |
| 62 | _script_arch = "i386" |
| 63 | } else if (_script_arch == "x64") { |
| 64 | _script_arch = "amd64" |
| 65 | } |
| 66 | assert( |
| 67 | exec_script("//build/dir_exists.py", |
| 68 | [ rebase_path(sysroot) ], |
| 69 | "string") == "True", |
| 70 | "Missing sysroot ($sysroot). To fix, run: build/linux/sysroot_scripts/install-sysroot.py --arch=$_script_arch") |
| 71 | } |
| 72 | } else if (is_mac) { |
| 73 | import("//build/config/mac/mac_sdk.gni") |
| 74 | sysroot = mac_sdk_path |
| 75 | } else if (is_ios) { |
| 76 | import("//build/config/ios/ios_sdk.gni") |
| 77 | sysroot = ios_sdk_path |
| 78 | } else { |
| 79 | sysroot = "" |
| 80 | } |