test/Makefile: Omit `-Wmissing-prototypes` from the C++ compiler flags
This is a preparation patch to integrate -Wmissing-prototypes to the
CI test robot. Clang++ is not happy with -Wmissing-prototypes:
cc1plus: warning: command-line option '-Wmissing-prototypes' \
is valid for C/ObjC but not for C++
Omit this flag when we are compiling a C++ source file.
Using -Wmissing-prototypes ensures we mark functions and variables as
static if we don't use them outside the translation unit.
Signed-off-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
Link: https://lore.kernel.org/r/20221124162633.3856761-8-ammar.faizi@intel.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
1 file changed
