|tagger||Morten Krogh-Jespersen <firstname.lastname@example.org>||Thu Jan 16 09:57:52 2020 +0100|
|author||Morten Krogh-Jespersen <email@example.com>||Wed Jan 15 16:12:54 2020 +0100|
|committer||Rico Wind <firstname.lastname@example.org>||Wed Jan 15 15:25:53 2020 +0000|
Version 2.0.15 Cherry-pick: Fix version test when we are on a release branch CL: https://r8-review.googlesource.com/47564 Cherry-pick: Reland "Do not rewrite generic signatures in target of merged classes" CL: https://r8-review.googlesource.com/47512 Cherry-pick: Do not classinline when root is a static get and is used with a monitor CL: https://r8-review.googlesource.com/47280 Cherry-pick: Allow for '.' for patterns when parsing -keepattributes CL: https://r8-review.googlesource.com/47321 Cherry-pick: Fix proguard configuration parser test to allow classname in attribute CL: https://r8-review.googlesource.com/47361 Bug: 147386014 Bug: 147411673 Bug: 147470785 Change-Id: If56d14012b6121ab76416ea7d8a8dda78d02136e
The R8 repo contains two tools:
D8 is a replacement for the DX dexer and R8 is a replacement for the Proguard shrinking and minification tool.
The R8 project uses
depot_tools from the chromium project to manage dependencies. Install
depot_tools and add it to your path before proceeding.
The R8 project uses Java 8 language features and requires a Java 8 compiler and runtime system.
Typical steps to download and build:
$ git clone https://r8.googlesource.com/r8 $ cd r8 $ tools/gradle.py d8 r8
tools/gradle.py script will bootstrap using depot_tools to download a version of gradle to use for building on the first run. This will produce two jar files:
The D8 dexer has a simple command-line interface with only a few options.
The most important option is whether to build in debug or release mode. Debug is the default mode and includes debugging information in the resulting dex files. Debugging information contains information about local variables used when debugging dex code. This information is not useful when shipping final Android apps to users and therefore, final builds should use the
--release flag to remove this debugging information to produce smaller dex files.
Typical invocations of D8 to produce dex file(s) in the out directoy:
Debug mode build:
$ java -jar build/libs/d8.jar --output out input.jar
Release mode build:
$ java -jar build/libs/d8.jar --release --output out input.jar
The full set of D8 options can be obtained by running the command line tool with the
R8 is a Proguard replacement for whole-program optimization, shrinking and minification. R8 uses the Proguard keep rule format for specifying the entry points for an application.
Typical invocations of R8 to produce optimized dex file(s) in the out directory:
$ java -jar build/libs/r8.jar --release --output out --pg-conf proguard.cfg input.jar
The full set of R8 options can be obtained by running the command line tool with the
Typical steps to run tests:
$ tools/test.py --no_internal
tools/test.py script will use depot_tools to download a lot of tests and test dependencies on the first run. This includes prebuilt version of the art runtime on which to validate the produced dex code.
Once the license agreement is in place, you can upload your patches using ‘git cl’ which is available in depot_tools. Once you have a change that you are happy with you should make sure that it passes all tests and then upload the change to our code review tool using:
$ git cl upload
On your first upload you will be asked to acquire credentials. Follow the instructions given by
git cl upload.
On successful uploads a link to the code review is printed in the output of the upload command. In the code review tool you can assign reviewers and mark the change ready for review. At that point the code review tool will send emails to reviewers.
For questions, reach out to us at email@example.com.