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- Should hopefully force recognition as a 'C' repository rather than counting all the Breakpad C++
140 lines
4.6 KiB
Plaintext
140 lines
4.6 KiB
Plaintext
Google Breakpad for Android
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===========================
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This document explains how to use the Google Breakpad client library
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on Android, and later generate valid stack traces from the minidumps
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it generates.
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This release supports ARM, x86 and MIPS based Android systems.
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This release requires NDK release r10c or higher.
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I. Building the client library:
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===============================
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The Android client is built as a static library that you can
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link into your own Android native code. There are two ways to
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build it:
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I.1. Building with ndk-build:
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-----------------------------
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If you're using the ndk-build build system, you can follow
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these simple steps:
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1/ Include android/google_breakpad/Android.mk from your own
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project's Android.mk
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This can be done either directly, or using ndk-build's
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import-module feature.
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2/ Link the library to one of your modules by using:
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LOCAL_STATIC_LIBRARIES += breakpad_client
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NOTE: The client library requires a C++ STL implementation,
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which you can select with APP_STL in your Application.mk
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It has been tested succesfully with both STLport and GNU libstdc++
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I.2. Building with a standalone Android toolchain:
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--------------------------------------------------
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All you need to do is configure your build with the right 'host'
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value, and disable the processor and tools, as in:
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$GOOGLE_BREAKPAD_PATH/configure --host=arm-linux-androideabi \
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--disable-processor \
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--disable-tools
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make -j4
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The library will be under src/client/linux/libbreakpad_client.a
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You can also use 'make check' to run the test suite on a connected
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Android device. This requires the Android 'adb' tool to be in your
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path.
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II. Using the client library in Android:
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========================================
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The usage instructions are very similar to the Linux ones that are
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found at http://code.google.com/p/google-breakpad/wiki/LinuxStarterGuide
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1/ You need to include "client/linux/handler/exception_handler.h" from a C++
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source file.
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2/ If you're not using ndk-build, you also need to:
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- add the following to your compiler include search paths:
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$GOOGLE_BREAKPAD_PATH/src
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$GOOGLE_BREAKPAD_PATH/src/common/android/include
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- add -llog to your linker flags
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Note that ndk-build does that for your automatically.
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3/ Keep in mind that there is no /tmp directory on Android.
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If you use the library from a regular Android applications, specify a
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path under your app-specific storage directory. An alternative is to
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store them on the SDCard, but this requires a specific permission.
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For a concrete example, see the sample test application under
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android/sample_app. See its README for more information.
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III. Getting a stack trace on the host:
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=======================================
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This process is similar to other platforms, but here's a quick example:
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1/ Retrieve the minidumps on your development machine.
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2/ Dump the symbols for your native libraries with the 'dump_syms' tool.
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This first requires building the host version of Google Breakpad, then
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calling:
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dump_syms $PROJECT_PATH/obj/local/$ABI/libfoo.so > libfoo.so.sym
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3/ Create the symbol directory hierarchy.
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The first line of the generated libfoo.so.sym will have a "MODULE"
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entry that carries a hexadecimal version number, e.g.:
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MODULE Linux arm D51B4A5504974FA6ECC1869CAEE3603B0 test_google_breakpad
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Note: The second field could be either 'Linux' or 'Android'.
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Extract the version number, and a 'symbol' directory, for example:
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$PROJECT_PATH/symbols/libfoo.so/$VERSION/
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Copy/Move your libfoo.sym file there.
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4/ Invoke minidump_stackwalk to create the stack trace:
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minidump_stackwalk $MINIDUMP_FILE $PROJECT_PATH/symbols
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Note that various helper scripts can be found on the web to automate these
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steps.
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IV. Verifying the Android build library:
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========================================
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If you modify Google Breakpad and want to check that it still works correctly
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on Android, please run the android/run-checks.sh script which will do all
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necessary verifications for you. This includes:
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- Rebuilding the full host binaries.
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- Rebuilding the full Android binaries with configure/make.
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- Rebuilding the client library unit tests, and running them on a device.
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- Rebuilding the client library with ndk-build.
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- Building, installing and running a test crasher program on a device.
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- Extracting the corresponding minidump, dumping the test program symbols
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and generating a stack trace.
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- Checking the generated stack trace for valid source locations.
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For more details, please run:
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android/run-checks.sh --help-all
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