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#
# american fuzzy lop - GCC plugin instrumentation
# -----------------------------------------------
#
# Written by Austin Seipp <aseipp@pobox.com> and
# Laszlo Szekeres <lszekeres@google.com> and
# Michal Zalewski <lcamtuf@google.com>
#
# GCC integration design is based on the LLVM design, which comes
# from Laszlo Szekeres.
#
# Copyright 2015 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
PREFIX ?= /usr/local
HELPER_PATH = $(PREFIX)/lib/afl
BIN_PATH = $(PREFIX)/bin
CFLAGS ?= -O3 -g -funroll-loops
CFLAGS += -Wall -D_FORTIFY_SOURCE=2 -Wno-pointer-sign \
-DAFL_PATH=\"$(HELPER_PATH)\" -DBIN_PATH=\"$(BIN_PATH)\" \
CXXFLAGS ?= -O3 -g -funroll-loops
CXXEFLAGS := $(CXXFLAGS) -Wall -D_FORTIFY_SOURCE=2
CC ?= gcc
CXX ?= g++
PLUGIN_FLAGS = -fPIC -fno-rtti -I"$(shell $(CC) -print-file-name=plugin)/include"
PROGS = ../afl-gcc-fast ../afl-gcc-pass.so ../afl-gcc-rt.o
all: test_deps $(PROGS) test_build all_done
test_deps:
@echo "[*] Checking for working '$(CC)'..."
@which $(CC) >/dev/null 2>&1 || ( echo "[-] Oops, can't find '$(CC)'. Make sure that it's in your \$$PATH (or set \$$CC and \$$CXX)."; exit 1 )
@echo "[*] Checking for '../afl-showmap'..."
@test -f ../afl-showmap || ( echo "[-] Oops, can't find '../afl-showmap'. Be sure to compile AFL first."; exit 1 )
@echo "[+] All set and ready to build."
../afl-gcc-fast: afl-gcc-fast.c | test_deps
$(CC) $(CFLAGS) $< -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) -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 $(LDFLAGS)
unset AFL_USE_ASAN AFL_USE_MSAN; AFL_INST_RATIO=100 AFL_PATH=. AFL_CC=$(CC) ../afl-gcc-fast $(CFLAGS) ../test-instr.c -o test-instr $(LDFLAGS)
echo 0 | ../afl-showmap -m none -q -o .test-instr0 ./test-instr
echo 1 | ../afl-showmap -m none -q -o .test-instr1 ./test-instr
@rm -f test-instr
@cmp -s .test-instr0 .test-instr1; DR="$$?"; rm -f .test-instr0 .test-instr1; if [ "$$DR" = "0" ]; then echo; echo "Oops, the instrumentation does not seem to be behaving correctly!"; echo; echo "Please ping <lcamtuf@google.com> to troubleshoot the issue."; echo; exit 1; fi
@echo "[+] All right, the instrumentation seems to be working!"
all_done: test_build
@echo "[+] All done! You can now use '../afl-gcc-fast' to compile programs."
.NOTPARALLEL: clean
clean:
rm -f *.o *.so *~ a.out core core.[1-9][0-9]* test-instr .test-instr0 .test-instr1
rm -f $(PROGS) ../afl-g++-fast
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