====== GCov build-system support ======

  * [[https://qiaomuf.wordpress.com/2011/05/26/use-gcov-and-lcov-to-know-your-test-coverage/|Use gcov and lcov to know your test coverage]]
  * [[https://git.ustclug.org/vanabel/php-sandbox/commit/ee7f3b47d491918dc3362bd2dd904d5d79d18df1?view=parallel|--enable-gcov to work with VPATH builds too]]
  * [[http://ansuz.sooke.bc.ca/entry/233|Testing with Autotools, Valgrind, and Gcov]]