The comment explaining how to build the fuzzers was broken in
927c77e7d4d ("Makefile: use FUZZ_CXXFLAGS for linking fuzzers",
2018-11-14).When building fuzzers, all .c files must be compiled with coverage tracing enabled. This is not possible when using only FUZZ_CXXFLAGS, as that flag is only applied to the fuzzers themselves. Switching back to CFLAGS fixes the issue. Signed-off-by: Josh Steadmon <stead...@google.com> --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 6b72f37c29..bbcfc2bc9f 100644 --- a/Makefile +++ b/Makefile @@ -3104,7 +3104,7 @@ cover_db_html: cover_db # An example command to build against libFuzzer from LLVM 4.0.0: # # make CC=clang CXX=clang++ \ -# FUZZ_CXXFLAGS="-fsanitize-coverage=trace-pc-guard -fsanitize=address" \ +# CFLAGS="-fsanitize-coverage=trace-pc-guard -fsanitize=address" \ # LIB_FUZZING_ENGINE=/usr/lib/llvm-4.0/lib/libFuzzer.a \ # fuzz-all # -- 2.20.1.97.g81188d93c3-goog
