Chrome on Android: fix cross-compilation setup.

build/common.gypi

 # Copyright (c) 2012 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 2250 matching lines @@
             'ldflags': [
               '-nostdlib',
               '-Wl,--no-undefined',
               '-Wl,--icf=safe',  # Enable identical code folding to reduce size
               # Don't export symbols from statically linked libraries.
               '-Wl,--exclude-libs=ALL',
             ],
             'libraries': [
               '-l<(android_stlport_library)',
               # Manually link the libgcc.a that the cross compiler uses.
-              '<!($CROSS_CC -print-libgcc-file-name)',
+              '<!(/bin/echo -n $LIBGCC_FILE_NAME)',
               '-lc',
               '-ldl',
               '-lstdc++',
               '-lm',
             ],
             'conditions': [
               ['android_build_type==0', {
                 'ldflags': [
                   '--sysroot=<(android_ndk_sysroot)',
                 ],
@@ skipping 585 matching lines @@
         },
       },
     }],
     ['enable_new_npdevice_api==1', {
       'target_defaults': {
         'defines': [
           'ENABLE_NEW_NPDEVICE_API',
         ],
       },
     }],
-    ['clang==1', {
+    ['clang==1 and OS!="android"', {
       'make_global_settings': [
         ['CC', '<(make_clang_dir)/bin/clang'],
         ['CXX', '<(make_clang_dir)/bin/clang++'],
         ['LINK', '$(CXX)'],
         ['CC.host', '$(CC)'],
         ['CXX.host', '$(CXX)'],
         ['LINK.host', '$(LINK)'],
       ],
     }],
+    ['OS=="android" and "<(GENERATOR)"!="ninja"', {
+      # make generator needs these variables at gyp time

[Ami GONE FROM CHROMIUM, 2012/03/14 17:13:18]

This is incorrect.  The generated Makefile will take these settings from the
environment (at make time) if present.

[bulach, 2012/03/14 17:36:43]

sorry, the comment wasn't clear.
we're doing this on purpose, so that we don't need any environment variable
being set during make time, only these ones at gyp time...

+      # in order to hardcode the compiler names into the Makefile.
+      'make_global_settings': [
+        ['CC', '<!(/bin/echo -n $CROSS_CC)'],
+        ['CXX', '<!(/bin/echo -n $CROSS_CXX)'],
+        ['LINK', '<!(/bin/echo -n $CROSS_LINK)'],
+        ['CC.host', '<!(/bin/echo -n $HOST_CC)'],
+        ['CXX.host', '<!(/bin/echo -n $HOST_CXX)'],
+        ['LINK.host', '<!(/bin/echo -n $HOST_LINK)'],
+      ],
+    }],
   ],
   'xcode_settings': {
     # DON'T ADD ANYTHING NEW TO THIS BLOCK UNLESS YOU REALLY REALLY NEED IT!
     # This block adds *project-wide* configuration settings to each project
     # file.  It's almost always wrong to put things here.  Specify your
     # custom xcode_settings in target_defaults to add them to targets instead.
 
     # In an Xcode Project Info window, the "Base SDK for All Configurations"
     # 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.
     'SDKROOT': 'macosx<(mac_sdk)',  # -isysroot
 
     # The Xcode generator will look for an xcode_settings section at the root
     # of each dict and use it to apply settings on a file-wide basis.  Most
     # settings should not be here, they should be in target-specific
     # xcode_settings sections, or better yet, should use non-Xcode-specific
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }