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Colin Cross d81f4b3461 Support empty jacoco-report-classes.jar 
If EMMA_INSTRUMENT is turned on but no APKs were built the rule to
collect jacoco-report-classes.jar would error with missing directories
and an empty zip file.  Switch to soong_zip, which doesn't error
on empty zip files, and hide the errors if $(TARGET_COMMON_OUT_ROOT)
or $(HOST_COMMON_OUT_ROOT) don't exist.

Test: m EMMA_INSTRUMENT=true TARGET_BUILD_APPS=Camera2
Change-Id: I09e30e37dc38f32f55b3f91bfc4d12c9e753083f
 		2020-02-14 10:36:47 -08:00
common Define PRODUCT_PRODUCT_VNDK_VERSION automatically 2020-01-11 12:44:08 +00:00
core Support empty jacoco-report-classes.jar 2020-02-14 10:36:47 -08:00
packaging Fix creating _dist_<goal> targets under !dist 2018-10-21 08:56:27 -07:00
target Merge "Move VAB properties to vendor." 2020-02-05 17:57:08 +00:00
tests Only set TARGET_PLATFORM version in lunch when explicitly requested 2017-05-01 14:26:40 -07:00
tools Merge "Add new Java/Kotlin/Make warning patterns" 2020-02-04 18:41:57 +00:00
.gitignore Add build subprojects to .gitignore 2015-07-23 13:18:47 -07:00
Changes.md Mark (BUILD_|LOCAL_)COPY_HEADERS as [more] deprecated 2020-01-27 19:45:04 -08:00
CleanSpec.mk Remove Soong intermdiates after moving image mutator 2019-12-17 14:53:49 -08:00
Deprecation.md Mark BUILD_HOST_EXECUTABLE as deprecated 2020-01-29 13:27:18 -08:00
OWNERS Add more OWNERS 2019-06-17 15:22:33 -07:00
README.md Mark envsetup.sh vars as deprecated in makefiles 2017-11-28 14:19:50 -08:00
Usage.txt Remove the PRODUCT-* goal 2019-07-29 14:27:04 -07:00
buildspec.mk.default Add TARGET_PLATFORM_VERSION to lunch 2017-03-23 09:44:08 -07:00
envsetup.sh Add ASAN_SYMBOLIZER_PATH for SANITIZE_HOST=address builds. 2020-02-04 09:16:28 -08:00
help.sh Rename product_services to system_ext 2019-07-09 08:57:19 +00:00
navbar.md Mark envsetup.sh vars as deprecated in makefiles 2017-11-28 14:19:50 -08:00
tapasHelp.sh Remove armv5te 2018-01-08 15:26:16 -08:00

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For an outdated reference on Android.mk files, see build-system.html.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.