问题
I'm building custom module in Android source using the mm command.
When I run mm clean, it seems that the whole project is cleaned.
How can I restrict the clean to just the current module?
回答1:
Use mm -B, it will rebuild all, equivalent to clean and then make.
回答2:
Another way to do without mm is to give make clean-<target name> from root of Android source.
Similarly you can build the required module alone with make <target name>
回答3:
make <lib> 2>&1 | grep -e "install"
This will make the and print all the libs that were re-compiled.
回答4:
On older make-based AOSP build system, use
mm -B
to rebuild the module.
On newer Ninja+Soong based AOSP build systems, it seems that -B no longer works. It gives the error Unknown option: -B.
One possible alternative is to use the NINJA_ARGS environment variable to pass additional Ninja arguments to underlying build engine.
For example, the following command removes all output and intermediate files:
NINJA_ARGS="-t clean" mm
In this case clean is an extra tool to the Ninja build system. See https://ninja-build.org/manual.html#_extra_tools for other tools.
One thing to notice is that the clean tool seems to clear all the dependencies of the module, instead of the module itself. I haven't found a way to assign a rule to limit the clean scope to the module only.
references: https://android.googlesource.com/platform/build/soong/+/HEAD/docs/best_practices.md
来源：https://stackoverflow.com/questions/19074431/how-to-do-an-android-mm-clean