Hi Simon. I was inspired by gnupdf's code coverage reports:
http://www.gnupdf.org/prmgt/coverage/ So I looked into how to integrate a script to generate them for some of my projects. I couldn't think of how to implement this as a gnulib module, but I wrote rules for maintainer-makefile's 'cfg.mk'. Nice. Would be good to create standard rules to compile with code coverage in maint.mk.
