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