273b25f9fd
The current EXPERIMENTAL_USE_OPENJDK9 environment variable is a legacy from when the 8 -> 9 toolchain upgrade was happening. That migration is done and the variable only affects the language level, so it should have a name that reflects that. (The current situation would be especially confusing if we started a 9 -> 11 toolchain upgrade, presumably controlled by a variable like EXPERIMENTAL_USE_OPENJDK11, since the two settings look incompatible but are actually orthogonal.) The current variable historically allowed a value or "1.8" which meant "use the OpenJDK 9 toolchain but target language level 8". That value no longer has any meaning and the new variable doesn't allow it. Bug: 131678633 Test: `make` with `EXPERIMENTAL_JAVA_LANGUAGE_LEVEL_9=true` Test: `javap -v $OUT_DIR/soong/.intermediates/libcore/core-oj/android_common/javac/classes/java/util/List.class | grep 'major version'` shows 53 Change-Id: Ic1f76a656bea30713b356a28e82f908a46933893 Test: Audit all mentions of the old string here and downstream |
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| common | ||
| core | ||
| packaging | ||
| target | ||
| tests | ||
| tools | ||
| .gitignore | ||
| Changes.md | ||
| CleanSpec.mk | ||
| Deprecation.md | ||
| OWNERS | ||
| README.md | ||
| Usage.txt | ||
| buildspec.mk.default | ||
| envsetup.sh | ||
| help.sh | ||
| navbar.md | ||
| tapasHelp.sh | ||
README.md
Android Make Build System
This is the Makefile-based portion of the Android Build System.
For documentation on how to run a build, see Usage.txt
For a list of behavioral changes useful for Android.mk writers see Changes.md
For an outdated reference on Android.mk files, see build-system.html. Our Android.mk files look similar, but are entirely different from the Android.mk files used by the NDK build system. When searching for documentation elsewhere, ensure that it is for the platform build system -- most are not.
This Makefile-based system is in the process of being replaced with Soong, a new build system written in Go. During the transition, all of these makefiles are read by Kati, and generate a ninja file instead of being executed directly. That's combined with a ninja file read by Soong so that the build graph of the two systems can be combined and run as one.