android: don't export unnecessary symbols.

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 4570 matching lines @@
               'CHROME_BUILD_ID="<(chrome_build_id)"',
             ],
             'ldflags!': [
               '-pthread',  # Not supported by Android toolchain.
             ],
             'ldflags': [
               '-Wl,--no-undefined',
             ],
             'conditions': [
               ['component=="static_library" and android_webview_build==0', {
-                'ldflags': [
-                  '-Wl,--exclude-libs=ALL',
-                ],
                 'target_conditions': [
                   ['use_native_jni_exports==0', {
                     # Use a linker version script to strip JNI exports from
                     # binaries which have not specifically asked to use them.
                     'ldflags': [
                       '-Wl,--version-script=<!(cd <(DEPTH) && pwd -P)/build/android/android_no_jni_exports.lst',
                     ],
                   }],
                 ],
               }],
@@ skipping 47 matching lines @@
                   # The NDK has these things, but doesn't define the constants
                   # to say that it does. Define them here instead.
                   'HAVE_SYS_UIO_H',
                 ],
                 'cflags': [
                   '--sysroot=<(android_ndk_sysroot)',
                 ],
                 'ldflags': [
                   '--sysroot=<(android_ndk_sysroot)',
                   '-nostdlib',
+                  # Don't allow visible symbols from libgcc or stlport to be
+                  # re-exported.
+                  '-Wl,--exclude-libs=libgcc.a',
+                  '-Wl,--exclude-libs=libstlport_static.a',
+                  # Don't allow visible symbols from libraries that contain
+                  # assembly code with symbols that aren't hidden properly.
+                  # http://crbug.com/448386
+                  '-Wl,--exclude-libs=libcommon_audio.a',
+                  '-Wl,--exclude-libs=libcommon_audio_neon.a',
+                  '-Wl,--exclude-libs=libcommon_audio_sse2.a',
+                  '-Wl,--exclude-libs=libiSACFix.a',
+                  '-Wl,--exclude-libs=libisac_neon.a',
+                  '-Wl,--exclude-libs=libopus.a',
+                  '-Wl,--exclude-libs=libvpx.a',
                 ],
                 'libraries': [
                   '-l<(android_stlport_library)',
                   # Manually link the libgcc.a that the cross compiler uses.
                   '<!(<(android_toolchain)/*-gcc -print-libgcc-file-name)',
                   '-lc',
                   '-ldl',
                   '-lm',
                 ],
               }],
@@ skipping 96 matching lines @@
                   # crtbegin_dynamic.o should be the last item in ldflags.
                   '<(android_ndk_lib)/crtbegin_dynamic.o',
                 ],
                 'libraries': [
                   # crtend_android.o needs to be the last item in libraries.
                   # Do not add any libraries after this!
                   '<(android_ndk_lib)/crtend_android.o',
                 ],
               }],
               ['_type=="shared_library" or _type=="loadable_module"', {
-                'ldflags!': [
-                  '-Wl,--exclude-libs=ALL',
-                ],
                 'ldflags': [
                   '-Wl,-shared,-Bsymbolic',
                 ],
                 'conditions': [
                   ['android_webview_build==0', {
                     'ldflags': [
                       # crtbegin_so.o should be the last item in ldflags.
                       '<(android_ndk_lib)/crtbegin_so.o',
                     ],
                     'libraries': [
@@ skipping 1120 matching lines @@
     # 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',
   },
 }