Additional SOURCE_FILENAME variable in CppCompileVariables

[nikhilkalige]

Description of the feature request:

We currently define __SHORT_FILENAME__=basename of source_file in cmake using COMPILE_DEFINITIONS feature. Currently, I don't see any way to define that flag inside of bazel. I tried

# pseudo code
flag_group('-D__SHORT_FILENAME__=$(basename %{source_file})')

but that fails to work because it gets escaped during the shell expansion with single quotes to '-D__SHORT_FILENAME=$(basename path_to_file/file.cpp)'.

So, would it be okay for me to make a change to the CompileBuildVariables.java and add a enum SOURCE_FILENAME that just stores the name of the file.

[oquenchil]

I think this came up when we had the conversation in person but I can't recall in detail. Did you try with a wrapper around clang/gcc to do this?

[nikhilkalige]

I did not find a easy solution for this so just went with full path for now