GN: Get Mac build working for IPC target at least.

- Move sysroot.gni up a directory, as it applies to multiple
platforms now.
- Use existing find_sdk.py script to locate Mac SDK.
- Fix some gtest includes for Mac files.

BUG=
R=brettw@chromium.org

Review URL: https://codereview.chromium.org/116763005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243654 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 27 insertions, 0 deletions

diff --git a/build/config/sysroot.gni b/build/config/sysroot.gni
new file mode 100644
index 0000000..ce1c5f2
--- /dev/null
+++ b/build/config/sysroot.gni
@@ -0,0 +1,27 @@
+# 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.
+
+# For official linux builds, use the sysroot checked into the internal source
+# repo so that the builds work on older versions of Linux.
+if (is_linux && is_chrome_branded && is_official_build && !is_chromeos) {
+  if (cpu_arch == "x64") {
+    sysroot = rebase_path(
+      "//chrome/installer/linux/debian_wheezy_amd64-sysroot", ".", "")
+  } else if (cpu_arch == "x86") {
+    sysroot = rebase_path(
+      "//chrome/installer/linux/debian_wheezy_i386-sysroot", ".", "")
+  } else {
+    # Any other builds don't use a sysroot.
+    sysroot = ""
+  }
+} else if (is_mac) {
+  import("//build/config/mac/mac_sdk.gni")
+
+  sysroot = mac_sdk_path
+} else {
+  sysroot = ""
+}