Emit PRODUCT_COMPRESSED_APEX as build prop The value will be set as sysprop: apexd.config.compressed_apex. This property tells apexd/init that there's no compressed apexes. For go/mount-apex-before-data feature to work, there should be no compressed apexes. If not, init/apexd should run with the feature disabled. PRODUCT_COMPRESSED_APEX is to control whether to install compressed APEXes or not. (If it's `false`, there'll be no compressed apexes.) Emitting this as sysprop helps init/apexd to know the fact. Otherwise, apexd/init need to scan the builtin apex directories (e.g. /system/apex) to see if there's no compressed apexes or not, which would make the boot slower because it involves lots opening directories and APEX files. Bug: 381173074 Test: lunch aosp_cf_x86_64_phone-trunk_staging-userdebug Test: m && cvd create && adb shell getprop apexd.config.compressed_apex Change-Id: Ia3c172be5f0906b6fbaebaf450ee24b22bf358cb
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For an outdated reference on Android.mk files, see build-system.html.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.