official find_sdk verify

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index fcf785793f122a2dcf4e44173a91272c1dbda4c2..6663455ac7af7d37dfce5f7e9ad94bbabd473a28 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -345,14 +345,6 @@
       # for details.
       'chromium_win_pch%': 0,
 
-      # iOS SDK and deployment target support.  The iOS 5.0 SDK is actually
-      # what is required, but the value is left blank so when it is set in
-      # the project files it will be the "current" iOS SDK.  Forcing 5.0
-      # even though it is "current" causes Xcode to spit out a warning for
-      # every single project file for not using the "current" SDK.
-      'ios_sdk%': '',
-      'ios_deployment_target%': '4.3',
-
       # Set this to true when building with Clang.
       # See http://code.google.com/p/chromium/wiki/Clang for details.
       'clang%': 0,
@@ -648,8 +640,6 @@
     'enable_extensions%': '<(enable_extensions)',
     'enable_web_intents%': '<(enable_web_intents)',
     'enable_web_intents_tag%': '<(enable_web_intents_tag)',
-    'ios_sdk%': '<(ios_sdk)',
-    'ios_deployment_target%': '<(ios_deployment_target)',
     'enable_plugin_installation%': '<(enable_plugin_installation)',
     'enable_protector_service%': '<(enable_protector_service)',
     'enable_session_service%': '<(enable_session_service)',
@@ -703,26 +693,6 @@
     # Linux-Mac cross compiler distcc farm.
     'chromium_mac_pch%': 1,
 
-    # Mac OS X SDK and deployment target support.
-    # The SDK identifies the version of the system headers that will be used,
-    # and corresponds to the MAC_OS_X_VERSION_MAX_ALLOWED compile-time macro.
-    # "Maximum allowed" refers to the operating system version whose APIs are
-    # available in the headers.
-    # The deployment target identifies the minimum system version that the
-    # built products are expected to function on.  It corresponds to the
-    # MAC_OS_X_VERSION_MIN_REQUIRED compile-time macro.
-    # To ensure these macros are available, #include <AvailabilityMacros.h>.
-    # Additional documentation on these macros is available at
-    # http://developer.apple.com/mac/library/technotes/tn2002/tn2064.html#SECTION3
-    # Chrome normally builds with the Mac OS X 10.6 SDK and sets the
-    # deployment target to 10.6.  Other projects, such as O3D, may override
-    # these defaults. If the SDK is installed someplace that Xcode doesn't
-    # know about, set mac_sdk_path to the path to the SDK. If set to a
-    # non-empty string, mac_sdk_path will be used in preference to mac_sdk.
-    # mac_sdk gets its default value elsewhere in this file.
-    'mac_sdk_path%': '',
-    'mac_deployment_target%': '10.6',
-
     # The default value for mac_strip in target_defaults. This cannot be
     # set there, per the comment about variable% in a target_defaults.
     'mac_strip_release%': 1,
@@ -994,6 +964,15 @@
         # sub-builds. This allows the Mac sub-build SDK in an iOS build to be
         # overridden from the command line the same way it is for a Mac build.
         'mac_sdk%': '<!(python <(DEPTH)/build/mac/find_sdk.py 10.6)',
+
+        # iOS SDK and deployment target support.  The iOS 5.0 SDK is actually
+        # what is required, but the value is left blank so when it is set in
+        # the project files it will be the "current" iOS SDK.  Forcing 5.0
+        # even though it is "current" causes Xcode to spit out a warning for
+        # every single project file for not using the "current" SDK.
+        'ios_sdk%': '',
+        'ios_sdk_path%': '',
+        'ios_deployment_target%': '4.3',
       }],
       ['OS=="android"', {
         # Location of Android NDK.
@@ -1104,8 +1083,41 @@
         'android_build_type%': '<(android_build_type)',
       }],  # OS=="android"
       ['OS=="mac"', {
+        'variables': {
+          # Mac OS X SDK and deployment target support.  The SDK identifies
+          # the version of the system headers that will be used, and
+          # corresponds to the MAC_OS_X_VERSION_MAX_ALLOWED compile-time
+          # macro.  "Maximum allowed" refers to the operating system version
+          # whose APIs are available in the headers.  The deployment target
+          # identifies the minimum system version that the built products are
+          # expected to function on.  It corresponds to the
+          # MAC_OS_X_VERSION_MIN_REQUIRED compile-time macro.  To ensure these
+          # macros are available, #include <AvailabilityMacros.h>.  Additional
+          # documentation on these macros is available at
+          # http://developer.apple.com/mac/library/technotes/tn2002/tn2064.html#SECTION3
+          # Chrome normally builds with the Mac OS X 10.6 SDK and sets the
+          # deployment target to 10.6.  Other projects, such as O3D, may
+          # override these defaults.
+
+          # Normally, mac_sdk_min is used to find an SDK that Xcode knows
+          # about that is at least the specified version. In official builds,
+          # the SDK must match mac_sdk_min exactly. If the SDK is installed
+          # someplace that Xcode doesn't know about, set mac_sdk_path to the
+          # path to the SDK; when set to a non-empty string, SDK detection
+          # based on mac_sdk_min will be bypassed entirely.
+          'mac_sdk_min%': '10.6',
+          'mac_sdk_path%': '',
+
+          'mac_deployment_target%': '10.6',
+        },
+
+        'mac_sdk_min': '<(mac_sdk_min)',
+        'mac_sdk_path': '<(mac_sdk_path)',
+        'mac_deployment_target': '<(mac_deployment_target)',
+
         # Enable clang on mac by default!
         'clang%': 1,
+
         # Compile in Breakpad support by default so that it can be
         # tested, even if it is not enabled by default at runtime.
         'mac_breakpad_compiled_in%': 1,
@@ -1122,7 +1134,7 @@
           }],
 
           ['branding=="Chrome" and buildtype=="Official"', {
-            'mac_sdk%': '<!(python <(DEPTH)/build/mac/find_sdk.py --verify 10.6)',
+            'mac_sdk%': '<!(python <(DEPTH)/build/mac/find_sdk.py --verify <(mac_sdk_min) --sdk_path=<(mac_sdk_path))',
             # Enable uploading crash dumps.
             'mac_breakpad_uploads%': 1,
             # Enable dumping symbols at build time for use by Mac Breakpad.
@@ -1130,7 +1142,7 @@
             # Enable Keystone auto-update support.
             'mac_keystone%': 1,
           }, { # else: branding!="Chrome" or buildtype!="Official"
-            'mac_sdk%': '<!(python <(DEPTH)/build/mac/find_sdk.py 10.6)',
+            'mac_sdk%': '<!(python <(DEPTH)/build/mac/find_sdk.py <(mac_sdk_min))',
             'mac_breakpad_uploads%': 0,
             'mac_breakpad%': 0,
             'mac_keystone%': 0,
@@ -3541,17 +3553,23 @@
       # setting sets the SDK on a project-wide basis. In order to get the
       # configured SDK to show properly in the Xcode UI, SDKROOT must be set
       # here at the project level.
-      ['mac_sdk_path==""', {
+      ['OS=="mac"', {
         'conditions': [
-          ['OS=="mac"', {
+          ['mac_sdk_path==""', {
             'SDKROOT': 'macosx<(mac_sdk)',  # -isysroot
+          }, {
+            'SDKROOT': '<(mac_sdk_path)',  # -isysroot
           }],
-          ['OS=="ios"', {
+        ],
+      }],
+      ['OS=="ios"', {
+        'conditions': [
+          ['ios_sdk_path==""', {
             'SDKROOT': 'iphoneos<(ios_sdk)',  # -isysroot
+          }, {
+            'SDKROOT': '<(ios_sdk_path)',  # -isysroot
           }],
         ],
-      }, {  # else: mac_sdk_path!=""
-        'SDKROOT': '<(mac_sdk_path)',  # -isysroot
       }],
       ['OS=="ios"', {
         # Just build armv7 since iOS 4.3+ only supports armv7.