Android envsetup.sh overrides pre-set TARGET_BUILD_TYPE env variable!

[Abhayadev S]

Hi,

I am using a master build script to trigger the android build and the master script does the following steps,

source build/envsetup.sh && lunch <num>

Now in my master script i was planning to export the TARGET_BUILD_TYPE as debug or release according to my other options.

Now I see that the  build/envsetup.sh is over-writing it by exporting  TARGET_BUILD_TYPE always as release in the lunch function ! (ref: https://cs.android.com/android/platform/superproject/+/master:build/make/envsetup.sh;drc=6a012266a18cdf89d4e94a3ce7aa15a9c462a448;l=718)

is this expected? its really blocking any possibilities for automation right?

regards,

abhay

[Dan Willemsen]

We never really use anything other than TARGET_BUILD_TYPE=release -- in AOSP changing that flag is effectively a no-op. TARGET_BUILD_VARIANT=eng or runtime flags tend to control more debug-like features, but in general it's problematic to turn on any sort of "debug" for everything in a build (doesn't fit in the partitions, too slow on device, yet another cross-cutting feature that isn't regularly tested, etc).

We also tend to avoid using `lunch` (or even envsetup.sh) at all for automation -- it's only setting ~3 variables that the build actually uses (TARGET_PRODUCT / TARGET_BUILD_VARIANT / TARGET_BUILD_APPS, plus TARGET_BUILD_TYPE=release). So much of our automation just does:

build/soong/soong_ui.bash --make-mode TARGET_PRODUCT=my_product TARGET_BUILD_VARIANT=userdebug droid dist <other things to build>

Which is roughly equivalent to:

source build/envsetup.sh && lunch my_product-userdebug && m dist

- Dan

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