CODEWITHSUNDEEP
android-ndkandroid-source
videoguy
videoguy

Reputation: 1918

How to make debug build of specific module under AOSP tree?

I built eng flavor of AOSP tree and installed on a device. I like to step through code of a module (say libinput.so). I want to build this module with "-O0 -g" passed as part of CFLAGS. BUT I don't want to change the Android.mk file of this module.

Lets say this module is at aosppath/frameworks/base/service/input.
I cd to this folder after sourcing build/envsetup.sh.

I tried "mm -B LOCAL_STRIP_MODULE=false". When I was stepping through eclipse gdb, I see the execution order going zig zag.
Then I tried "mm -B LOCAL_STRIP_MODULE=false LOCAL_CFLAGS="-O0 -g""
Now gdb was able to step through fine. But this doesn't seem to work in other projects. I have a module that uses skia and opengl. The build is failing when I pass LOCAL_CFLAGS on command line.

What is the suggested way to make debug flavor of specific .so or exe under AOSP tree?

Thanks

Upvotes: 3

Views: 2901

Answers (1)

Andrew T.
Andrew T.

Reputation: 4686

So since the main reason you don't want to make changes to Android.mk is so you don't have to check it in, an alternative here is to use the .repo/local_manifests folder to change a module that is owned by android to be owned by you.

Here is a sample my_manifest.xml file which can do this for you:

<manifest>
  <remote name="origin"
           fetch="ssh://[email protected]/YourRepoHere/" />

  <remove-project name="platform/frameworks/base"/>
  <project path="frameworks/base" remote="origin" name="frameworks-base" revision="your-branch-name"/>

</manifest>

This will remove frameworks/base from the android manifest tree, and replace it with your own manifest tree (which you need to fork into your own repository).

After that, you can then use a conditional inside of your Android.mk file like so:

ifeq ($(TARGET_BUILD_VARIANT),userdebug)
    CONDITIONAL_CHANGES_HERE
endif

Again, I realize that you didn't want to modify the Android.mk file but since you also asked for the suggested way of making a module that is conditional on the build variant, I am going to include this answer anyway in case nothing better comes your way. This is really the suggested way of doing what you want to do, as your project will now be maintained by the repo tool.

Upvotes: 1

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