Fix gyptest-type-envvars.py for Xcode 5.0.0

test/mac/type_envvars/test_check_sdkroot.sh

+#!/bin/bash
+# Copyright (c) 2014 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+set -e
+
+# `xcodebuild -version` output looks like
+#    Xcode 4.6.3
+#    Build version 4H1503
+# or like
+#    Xcode 4.2
+#    Build version 4C199
+# or like
+#    Xcode 3.2.6
+#    Component versions: DevToolsCore-1809.0; DevToolsSupport-1806.0
+#    BuildVersion: 10M2518
+# Convert that to '0463', '0420' and '0326' respectively.
+function xcodeversion() {
+  xcodebuild -version | awk '/Xcode ([0-9]+\.[0-9]+(\.[0-9]+)?)/ {
+    version = $2
+    gsub(/\./, "", version)
+    if (length(version) < 3) {
+      version = version "0"
+    }
+    if (length(version) < 4) {
+      version = "0" version
+    }
+  }
+  END { print version }'
+}
+
+# Returns true if |string1| is smaller than |string2|.
+# This function assumes that both strings represent Xcode version numbers
+# as returned by |xcodeversion|.
+function smaller() {
+  local min="$(echo -ne "${1}\n${2}\n" | sort -n | head -n1)"
+  test "${min}" != "${2}"
+}
+
+if [[ "$(xcodeversion)" < "0500" ]]; then
+  # Xcode version is older than 5.0, check that SDKROOT is set but empty.
+  [[ -z "${SDKROOT}" && -z "${SDKROOT-_}" ]]
+else
+  # Xcode version is newer than 5.0, check that SDKROOT is set.
+  [[ "${SDKROOT}" == "$(xcodebuild -version -sdk '' Path)" ]]
+fi