Basic cgo functionality
=======================
opts_test
---------
Checks that different sets of options are passed to C and C++ sources in a
``go_library`` with ``cgo = True``.
dylib_test
----------
Checks that Go binaries can link against dynamic C libraries. Some libraries
(especially those provided with ``cc_import``) may only have dynamic versions,
and we should be able to link against them and find them at run-time.