In previous Android versions, you could use showcommands as a build target
modifier. Now, you get a warning message:
! The argument `showcommands` is no longer supported.
! Instead, the verbose log is always written to a compressed file in the output dir:
!
! gzip -cd out/verbose.log.gz | less -R
!
! Older versions are saved in verbose.log.#.gz files
You can just zcat out/verbose.log.gz, older versions will be saved as
out/verbose.log.1.gz, verbose.log.2.gz and so forth.