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213 lines
7.8 KiB
213 lines
7.8 KiB
1 month ago
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#
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# american fuzzy lop++ - GCC plugin instrumentation
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# -----------------------------------------------
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#
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# Written by Austin Seipp <aseipp@pobox.com> and
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# Laszlo Szekeres <lszekeres@google.com> and
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# Michal Zalewski and
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# Heiko Eißfeldt <heiko@hexco.de>
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#
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# GCC integration design is based on the LLVM design, which comes
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# from Laszlo Szekeres.
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#
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# Copyright 2015 Google Inc. All rights reserved.
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# Copyright 2019-2024 AFLplusplus Project. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at:
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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#TEST_MMAP=1
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PREFIX ?= /usr/local
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HELPER_PATH ?= $(PREFIX)/lib/afl
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BIN_PATH ?= $(PREFIX)/bin
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DOC_PATH ?= $(PREFIX)/share/doc/afl
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MAN_PATH ?= $(PREFIX)/share/man/man8
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VERSION = $(shell grep '^$(HASH)define VERSION ' ./config.h | cut -d '"' -f2)
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CFLAGS ?= -O3 -g -funroll-loops
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# -D_FORTIFY_SOURCE=1
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CFLAGS_SAFE := -Wall -Iinclude -Wno-pointer-sign \
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-DAFL_PATH=\"$(HELPER_PATH)\" -DBIN_PATH=\"$(BIN_PATH)\" \
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-DGCC_VERSION=\"$(GCCVER)\" -DGCC_BINDIR=\"$(GCCBINDIR)\" \
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-Wno-unused-function
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override CFLAGS += $(CFLAGS_SAFE)
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CXXFLAGS ?= -O3 -g -funroll-loops
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# -D_FORTIFY_SOURCE=1
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CXXEFLAGS := $(CXXFLAGS) $(CPPFLAGS) -Wall -std=c++11
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CC ?= gcc
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CXX ?= g++
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SYS = $(shell uname -s)
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ifeq "clang" "$(CC)"
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CC = gcc
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CXX = g++
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endif
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ifeq "clang++" "$(CXX)"
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CC = gcc
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CXX = g++
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endif
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ifeq "$(findstring Foundation,$(shell $(CC) --version))" ""
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CC = gcc
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CXX = g++
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endif
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PLUGIN_BASE = "$(shell $(CC) -print-file-name=plugin)"
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PLUGIN_FLAGS = -fPIC -fno-rtti -fno-exceptions -I$(PLUGIN_BASE)/include -I$(PLUGIN_BASE)
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HASH=\#
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GCCVER = $(shell $(CC) --version 2>/dev/null | awk 'NR == 1 {print $$NF}')
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GCCBINDIR = $(shell dirname `command -v $(CC)` 2>/dev/null )
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ifeq "$(shell echo '$(HASH)include <sys/ipc.h>@$(HASH)include <sys/shm.h>@int main() { int _id = shmget(IPC_PRIVATE, 65536, IPC_CREAT | IPC_EXCL | 0600); shmctl(_id, IPC_RMID, 0); return 0;}' | tr @ '\n' | $(CC) -x c - -o .test2 2>/dev/null && echo 1 || echo 0 ; rm -f .test2 )" "1"
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SHMAT_OK=1
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else
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SHMAT_OK=0
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override CFLAGS_SAFE += -DUSEMMAP=1
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endif
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ifeq "$(TEST_MMAP)" "1"
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SHMAT_OK=0
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override CFLAGS_SAFE += -DUSEMMAP=1
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endif
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ifneq "$(SYS)" "Haiku"
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ifneq "$(SYS)" "OpenBSD"
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LDFLAGS += -lrt
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endif
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else
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CFLAGS_SAFE += -DUSEMMAP=1
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endif
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ifeq "$(SYS)" "OpenBSD"
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CC = egcc
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CXX = eg++
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PLUGIN_FLAGS += -I/usr/local/include
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endif
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ifeq "$(SYS)" "DragonFly"
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PLUGIN_FLAGS += -I/usr/local/include
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endif
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ifeq "$(SYS)" "SunOS"
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PLUGIN_FLAGS += -I/usr/include/gmp
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endif
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PASSES = ./afl-gcc-pass.so ./afl-gcc-cmplog-pass.so ./afl-gcc-cmptrs-pass.so
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PROGS = $(PASSES) ./afl-compiler-rt.o ./afl-compiler-rt-32.o ./afl-compiler-rt-64.o
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.PHONY: all
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all: test_shm test_deps $(PROGS) test_build all_done
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.PHONY: test_shm
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ifeq "$(SHMAT_OK)" "1"
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test_shm:
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@echo "[+] shmat seems to be working."
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@rm -f .test2
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else
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test_shm:
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@echo "[-] shmat seems not to be working, switching to mmap implementation"
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endif
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.PHONY: test_deps
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test_deps:
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@echo "[*] Checking for working '$(CC)'..."
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@command -v $(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 )
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# @echo "[*] Checking for gcc for plugin support..."
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# @$(CC) -v 2>&1 | grep -q -- --enable-plugin || ( echo "[-] Oops, this gcc has not been configured with plugin support."; exit 1 )
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@echo "[*] Checking for gcc plugin development header files..."
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@test -d `$(CC) -print-file-name=plugin`/include || ( echo "[-] Oops, can't find gcc header files. Be sure to install 'gcc-X-plugin-dev'."; exit 1 )
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@echo "[*] Checking for './afl-showmap'..."
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@test -f ./afl-showmap || ( echo "[-] Oops, can't find './afl-showmap'. Be sure to compile AFL first."; exit 1 )
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@echo "[+] All set and ready to build."
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afl-common.o: ./src/afl-common.c
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$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@ $(LDFLAGS)
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./afl-compiler-rt.o: instrumentation/afl-compiler-rt.o.c
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$(CC) $(CFLAGS_SAFE) $(CPPFLAGS) -O3 -Wno-unused-result -fPIC -c $< -o $@
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./afl-compiler-rt-32.o: instrumentation/afl-compiler-rt.o.c
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@printf "[*] Building 32-bit variant of the runtime (-m32)... "
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@$(CC) $(CFLAGS_SAFE) $(CPPFLAGS) -O3 -Wno-unused-result -m32 -fPIC -c $< -o $@ 2>/dev/null; if [ "$$?" = "0" ]; then echo "success!"; else echo "failed (that's fine)"; fi
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./afl-compiler-rt-64.o: instrumentation/afl-compiler-rt.o.c
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@printf "[*] Building 64-bit variant of the runtime (-m64)... "
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@$(CC) $(CFLAGS_SAFE) $(CPPFLAGS) -O3 -Wno-unused-result -m64 -fPIC -c $< -o $@ 2>/dev/null; if [ "$$?" = "0" ]; then echo "success!"; else echo "failed (that's fine)"; fi
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$(PASSES): instrumentation/afl-gcc-common.h
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./afl-gcc-pass.so: instrumentation/afl-gcc-pass.so.cc | test_deps
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$(CXX) $(CXXEFLAGS) $(PLUGIN_FLAGS) -shared $< -o $@
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ln -sf afl-cc afl-gcc-fast
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ln -sf afl-cc afl-g++-fast
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ln -sf afl-cc.8 afl-gcc-fast.8
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ln -sf afl-cc.8 afl-g++-fast.8
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./afl-gcc-cmplog-pass.so: instrumentation/afl-gcc-cmplog-pass.so.cc | test_deps
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$(CXX) $(CXXEFLAGS) $(PLUGIN_FLAGS) -shared $< -o $@
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./afl-gcc-cmptrs-pass.so: instrumentation/afl-gcc-cmptrs-pass.so.cc | test_deps
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$(CXX) $(CXXEFLAGS) $(PLUGIN_FLAGS) -shared $< -o $@
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.PHONY: test_build
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test_build: $(PROGS)
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@echo "[*] Testing the CC wrapper and instrumentation output..."
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unset AFL_USE_ASAN AFL_USE_MSAN; ASAN_OPTIONS=detect_leaks=0 AFL_QUIET=1 AFL_INST_RATIO=100 AFL_PATH=. AFL_CC=$(CC) ./afl-gcc-fast $(CFLAGS) $(CPPFLAGS) ./test-instr.c -o test-instr $(LDFLAGS)
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ASAN_OPTIONS=detect_leaks=0 ./afl-showmap -m none -q -o .test-instr0 ./test-instr </dev/null
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echo 1 | ASAN_OPTIONS=detect_leaks=0 ./afl-showmap -m none -q -o .test-instr1 ./test-instr
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@rm -f test-instr
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@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 post to https://github.com/AFLplusplus/AFLplusplus/issues to troubleshoot the issue."; echo; exit 1; fi
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@echo "[+] All right, the instrumentation seems to be working!"
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.PHONY: all_done
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all_done: test_build
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@echo "[+] All done! You can now use './afl-gcc-fast' to compile programs."
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.NOTPARALLEL: clean
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%.8: %
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@echo .TH $* 8 `date "+%Y-%m-%d"` "AFL++" > ./$@
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@echo .SH NAME >> ./$@
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@echo .B $* >> ./$@
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@echo >> ./$@
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@echo .SH SYNOPSIS >> ./$@
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@./$* -h 2>&1 | head -n 3 | tail -n 1 | sed 's/^\.\///' >> ./$@
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@echo >> ./$@
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@echo .SH OPTIONS >> ./$@
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@echo .nf >> ./$@
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@./$* -h 2>&1 | tail -n +4 >> ./$@
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@echo >> ./$@
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@echo .SH AUTHOR >> ./$@
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@echo "AFL++ was written by Michal \"lcamtuf\" Zalewski and is maintained by Marc \"van Hauser\" Heuse <mh@mh-sec.de>, Dominik Maier <domenukk@gmail.com>, Andrea Fioraldi <andreafioraldi@gmail.com> and Heiko \"hexcoder-\" Eissfeldt <heiko.eissfeldt@hexco.de>" >> ./$@
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@echo The homepage of AFL++ is: https://github.com/AFLplusplus/AFLplusplus >> ./$@
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@echo >> ./$@
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@echo .SH LICENSE >> ./$@
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@echo Apache License Version 2.0, January 2004 >> ./$@
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ln -sf afl-cc.8 ./afl-g++-fast.8
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.PHONY: install
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install: all
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ln -sf afl-cc $${DESTDIR}$(BIN_PATH)/afl-gcc-fast
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ln -sf afl-c++ $${DESTDIR}$(BIN_PATH)/afl-g++-fast
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ln -sf afl-compiler-rt.o $${DESTDIR}$(HELPER_PATH)/afl-gcc-rt.o
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install -m 755 ./afl-gcc-pass.so $${DESTDIR}$(HELPER_PATH)
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install -m 755 ./afl-gcc-cmplog-pass.so $${DESTDIR}$(HELPER_PATH)
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install -m 755 ./afl-gcc-cmptrs-pass.so $${DESTDIR}$(HELPER_PATH)
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install -m 644 -T instrumentation/README.gcc_plugin.md $${DESTDIR}$(DOC_PATH)/README.gcc_plugin.md
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.PHONY: clean
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clean:
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rm -f *.o *.so *~ a.out core core.[1-9][0-9]* test-instr .test-instr0 .test-instr1 .test2
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rm -f $(PROGS) afl-common.o ./afl-g++-fast ./afl-g*-fast.8 instrumentation/*.o
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