diff options
Diffstat (limited to 'base/android/java/templates/NativeLibraries.template')
| -rw-r--r-- | base/android/java/templates/NativeLibraries.template | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/base/android/java/templates/NativeLibraries.template b/base/android/java/templates/NativeLibraries.template new file mode 100644 index 0000000000..68277df753 --- /dev/null +++ b/base/android/java/templates/NativeLibraries.template @@ -0,0 +1,109 @@ +// Copyright 2014 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. + +package org.chromium.base.library_loader; + +public class NativeLibraries { + /** + * IMPORTANT NOTE: The variables defined here must _not_ be 'final'. + * + * The reason for this is very subtle: + * + * - This template is used to generate several distinct, but similar + * files used in different contexts: + * + * o .../gen/templates/org/chromium/base/library_loader/NativeLibraries.java + * + * This file is used to build base.jar, which is the library + * jar used by chromium projects. However, the + * corresponding NativeLibraries.class file will _not_ be part + * of the final base.jar. + * + * o .../$PROJECT/native_libraries_java/NativeLibraries.java + * + * This file is used to build an APK (e.g. $PROJECT + * could be 'content_shell_apk'). Its content will depend on + * this target's specific build configuration, and differ from + * the source file above. + * + * - During the final link, all .jar files are linked together into + * a single .dex file, and the second version of NativeLibraries.class + * will be put into the final output file, and used at runtime. + * + * - If the variables were defined as 'final', their value would be + * optimized out inside of 'base.jar', and could not be specialized + * for every chromium program. This, however, doesn't apply to arrays of + * strings, which can be defined as final. + * + * This exotic scheme is used to avoid injecting project-specific, or + * even build-specific, values into the base layer. E.g. this is + * how the component build is supported on Android without modifying + * the sources of each and every Chromium-based target. + */ + + public static final int CPU_FAMILY_UNKNOWN = 0; + public static final int CPU_FAMILY_ARM = 1; + public static final int CPU_FAMILY_MIPS = 2; + public static final int CPU_FAMILY_X86 = 3; + +#if defined(ENABLE_CHROMIUM_LINKER_LIBRARY_IN_ZIP_FILE) && \ + !defined(ENABLE_CHROMIUM_LINKER) +#error "Must have ENABLE_CHROMIUM_LINKER to enable library in zip file" +#endif + + // Set to true to enable the use of the Chromium Linker. +#if defined(ENABLE_CHROMIUM_LINKER) + public static boolean sUseLinker = true; +#else + public static boolean sUseLinker = false; +#endif + +#if defined(ENABLE_CHROMIUM_LINKER_LIBRARY_IN_ZIP_FILE) + public static boolean sUseLibraryInZipFile = true; +#else + public static boolean sUseLibraryInZipFile = false; +#endif + +#if defined(ENABLE_CHROMIUM_LINKER_TESTS) + public static boolean sEnableLinkerTests = true; +#else + public static boolean sEnableLinkerTests = false; +#endif + + // This is the list of native libraries to be loaded (in the correct order) + // by LibraryLoader.java. The base java library is compiled with no + // array defined, and then the build system creates a version of the file + // with the real list of libraries required (which changes based upon which + // .apk is being built). + // TODO(cjhopman): This is public since it is referenced by NativeTestActivity.java + // directly. The two ways of library loading should be refactored into one. + public static final String[] LIBRARIES = +#if defined(NATIVE_LIBRARIES_LIST) + NATIVE_LIBRARIES_LIST; +#else + {}; +#endif + + // This is the expected version of the 'main' native library, which is the one that + // implements the initial set of base JNI functions including + // base::android::nativeGetVersionName() + static String sVersionNumber = +#if defined(NATIVE_LIBRARIES_VERSION_NUMBER) + NATIVE_LIBRARIES_VERSION_NUMBER; +#else + ""; +#endif + + public static int sCpuFamily = +#if defined(ANDROID_APP_CPU_FAMILY_ARM) + CPU_FAMILY_ARM; +#elif defined(ANDROID_APP_CPU_FAMILY_X86) + CPU_FAMILY_X86; +#elif defined(ANDROID_APP_CPU_FAMILY_MIPS) + CPU_FAMILY_MIPS; +#else + CPU_FAMILY_UNKNOWN; +#endif + +} |