Build ozone/linux_os with jessie sysroot when use_ozone=true

build/config/sysroot.gni

 # 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() {
@@ skipping 30 matching lines @@
     sysroot = "$android_ndk_root/$arm64_android_sysroot_subdir"
   } else if (current_cpu == "mips64el") {
     sysroot = "$android_ndk_root/$mips64_android_sysroot_subdir"
   } else {
     sysroot = ""
   }
 } else if (is_linux && use_sysroot) {
   # By default build against a sysroot image downloaded from Cloud Storage
   # during gclient runhooks.
   if (is_chromeos) {
-    # Regular ChromeOS builds use custom sysroots, but desktop ChromeOS (where
-    # we're building linux desktop binaries but using the ChromeOS UI and
-    # functionality where possible) needs to run on the buliders, which are
-    # running precise.  The precise build has a different set of dependencies
-    # from the wheezy build, so we cannot use the wheezy sysroot.
-    sysroot = "//build/linux/ubuntu_precise_amd64-sysroot"
+    import("//ui/ozone/ozone.gni")

[Tom (Use chromium acct), 2017/01/18 19:02:18]

Move the added code into the else block (!is_chromeos), and keep the chromeos
build always using precise.

I can add libxkbcommon* to the precise sysroot since those packages are actually
available: 
http://packages.ubuntu.com/search?suite=precise&searchon=names&keywords=libxk...

[tonikitoo, 2017/01/20 20:26:21]

Done.

+    if (use_ozone && ozone_platform_wayland) {
+      sysroot = "//build/linux/debian_jessie_amd64-sysroot"
+    } else {
+      # Regular ChromeOS builds use custom sysroots, but desktop ChromeOS (where
+      # we're building linux desktop binaries but using the ChromeOS UI and
+      # functionality where possible) needs to run on the buliders, which are
+      # running precise.  The precise build has a different set of dependencies
+      # from the wheezy build, so we cannot use the wheezy sysroot.
+      sysroot = "//build/linux/ubuntu_precise_amd64-sysroot"
+    }
   } else {
     if (current_cpu == "x64") {
       sysroot = "//build/linux/debian_wheezy_amd64-sysroot"
     } else if (current_cpu == "x86") {
       sysroot = "//build/linux/debian_wheezy_i386-sysroot"
     } else if (current_cpu == "mipsel") {
       sysroot = "//build/linux/debian_wheezy_mips-sysroot"
     } else if (current_cpu == "arm") {
       sysroot = "//build/linux/debian_wheezy_arm-sysroot"
     } else if (current_cpu == "arm64") {
@@ skipping 25 matching lines @@
   }
 } 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 {
   sysroot = ""
 }