Soong can generate compdb files. This is intended for use with editing tools such as YouCompleteMe and other libclang based completers.
compdb file generation is enabled via environment variable:
$ export SOONG_GEN_COMPDB=1 $ export SOONG_GEN_COMPDB_DEBUG=1
One can make soong generate a symlink to the compdb file using an environment variable:
$ export SOONG_LINK_COMPDB_TO=$ANDROID_HOST_OUT
You can then trigger an empty build:
$ make nothing
Note that if you build using mm or other limited makes with these environment variables set the compdb will only include files in included modules.