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Pass CPPFLAGS to all calls of the C compiler

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This variable is a standard way to inject options for the C
preprocessor. It's respected by the implicit rules of make
and autoconf/automake.

Debian sets this variable during package build to inject
`-D_FORTIFY_SOURCE=2` and we would like afl++ to respect it.

Note that this commit also adds $(CFLAGS) in the build of
afl-performance.o where it was missing. It might have been
on purpose but we want to keep CFLAGS everywhere as well
since Debian injects various options through that variable
(for hardening and reproducibility).
This commit is contained in:
Raphaël Hertzog
2020-08-28 21:55:52 +02:00
parent a3cd523250
commit c0fd7ba6d1
6 changed files with 45 additions and 45 deletions
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8
gcc_plugin/GNUmakefile
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@ -111,21 +111,21 @@ test_deps:
@echo "[+] All set and ready to build."
afl-common.o: ../src/afl-common.c
$(CC) $(CFLAGS) -c $< -o $@ $(LDFLAGS)
$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@ $(LDFLAGS)
../afl-gcc-fast: afl-gcc-fast.c afl-common.o | test_deps
$(CC) -DAFL_GCC_CC=\"$(CC)\" -DAFL_GCC_CXX=\"$(CXX)\" $(CFLAGS) $< afl-common.o -o $@ $(LDFLAGS)
$(CC) -DAFL_GCC_CC=\"$(CC)\" -DAFL_GCC_CXX=\"$(CXX)\" $(CFLAGS) $(CPPFLAGS) $< afl-common.o -o $@ $(LDFLAGS)
ln -sf afl-gcc-fast ../afl-g++-fast
../afl-gcc-pass.so: afl-gcc-pass.so.cc | test_deps
$(CXX) $(CXXEFLAGS) $(PLUGIN_FLAGS) -shared $< -o $@
../afl-gcc-rt.o: afl-gcc-rt.o.c | test_deps
$(CC) $(CFLAGS_SAFE) -fPIC -c $< -o $@
$(CC) $(CFLAGS_SAFE) $(CPPFLAGS) -fPIC -c $< -o $@
test_build: $(PROGS)
@echo "[*] Testing the CC wrapper and instrumentation output..."
unset AFL_USE_ASAN AFL_USE_MSAN; AFL_QUIET=1 AFL_INST_RATIO=100 AFL_PATH=. AFL_CC=$(CC) ../afl-gcc-fast $(CFLAGS) ../test-instr.c -o test-instr $(LDFLAGS)
unset AFL_USE_ASAN AFL_USE_MSAN; AFL_QUIET=1 AFL_INST_RATIO=100 AFL_PATH=. AFL_CC=$(CC) ../afl-gcc-fast $(CFLAGS) $(CPPFLAGS) ../test-instr.c -o test-instr $(LDFLAGS)
# unset AFL_USE_ASAN AFL_USE_MSAN; AFL_INST_RATIO=100 AFL_PATH=. AFL_CC=$(CC) ../afl-gcc-fast $(CFLAGS) ../test-instr.c -o test-instr $(LDFLAGS)
ASAN_OPTIONS=detect_leaks=0 ../afl-showmap -m none -q -o .test-instr0 ./test-instr </dev/null
echo 1 | ASAN_OPTIONS=detect_leaks=0 ../afl-showmap -m none -q -o .test-instr1 ./test-instr