src/*/Makefile needs to allow additional CFLAGS values to be provided
from the calling Makefiles so that the clang command line arguments to
enable sanitizers consistently. In addition, it can be useful to be able
to provide CC, CFLAGS, and LDFLAGS from external setup while still
requesing LIBFUZZER=y build. Allow that by not overriding these
variables if they are already set.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This is a newer version of tests/wnm-fuzzer tool as the initial step in
creating a more uniform set of fuzzing tools that can be used with both
libFuzzer and afl-fuzz.
Signed-off-by: Jouni Malinen <j@w1.fi>