GNUmakefile.llvm

# american fuzzy lop++ - LLVM instrumentation
# -----------------------------------------
#
# Written by Laszlo Szekeres <lszekeres@google.com> and
#            Michal Zalewski
#
# LLVM integration design comes from Laszlo Szekeres.
#
# Copyright 2015, 2016 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:
#
#   https://www.apache.org/licenses/LICENSE-2.0
#

# For Heiko:
#TEST_MMAP=1
HASH=\#

PREFIX      ?= /usr/local
HELPER_PATH ?= $(PREFIX)/lib/afl
BIN_PATH    ?= $(PREFIX)/bin
DOC_PATH    ?= $(PREFIX)/share/doc/afl
MISC_PATH   ?= $(PREFIX)/share/afl
MAN_PATH    ?= $(PREFIX)/share/man/man8

BUILD_DATE  ?= $(shell date -u -d "@$(SOURCE_DATE_EPOCH)" "+%Y-%m-%d" 2>/dev/null || date -u -r "$(SOURCE_DATE_EPOCH)" "+%Y-%m-%d" 2>/dev/null || date -u "+%Y-%m-%d")

VERSION     = $(shell grep '^$(HASH)define VERSION ' ./config.h | cut -d '"' -f2)

SYS = $(shell uname -s)

override LLVM_TOO_NEW_DEFAULT := 18
override LLVM_TOO_OLD_DEFAULT := 13

ifeq "$(SYS)" "OpenBSD"
  LLVM_CONFIG ?= $(BIN_PATH)/llvm-config
  HAS_OPT = $(shell test -x $(BIN_PATH)/opt && echo 0 || echo 1)
  ifeq "$(HAS_OPT)" "1"
    $(warning llvm_mode needs a complete llvm installation (versions 6.0 up to 13) -> e.g. "pkg_add llvm-7.0.1p9")
  endif
else
  # Small function to use Bash to detect the latest available clang and clang++ binaries, if using them by that name fails
  override _CLANG_VERSIONS_TO_TEST := $(patsubst %,-%,$(shell seq $(LLVM_TOO_NEW_DEFAULT) -1 $(LLVM_TOO_OLD_DEFAULT)))
  detect_newest=$(shell for v in "" $(_CLANG_VERSIONS_TO_TEST); do test -n "$$(command -v -- $1$$v)" && { echo "$1$$v"; break; }; done)
  LLVM_CONFIG ?= $(call detect_newest,llvm-config)
endif

ifneq "$(LLVM_CONFIG)" ""
  override LLVM_RAW_VER        := $(shell $(LLVM_CONFIG) --version 2>/dev/null)
  LLVMVER                      := $(subst svn,,$(subst git,,$(LLVM_RAW_VER)))

  LLVM_BINDIR                  := $(shell $(LLVM_CONFIG) --bindir 2>/dev/null)
  LLVM_LIBDIR                  := $(shell $(LLVM_CONFIG) --libdir 2>/dev/null)
endif

ifneq "$(LLVMVER)" ""
  LLVM_MAJOR                   := $(firstword $(subst ., ,$(LLVMVER)))
  LLVM_MINOR                   := $(firstword $(subst ., ,$(subst $(LLVM_MAJOR).,,$(LLVMVER))))
  LLVM_TOO_NEW                 := $(shell test $(LLVM_MAJOR) -gt $(LLVM_TOO_NEW_DEFAULT) && echo 1 || echo 0)
  LLVM_TOO_OLD                 := $(shell test $(LLVM_MAJOR) -lt $(LLVM_TOO_OLD_DEFAULT) && echo 1 || echo 0)
  LLVM_NEW_API                 := $(shell test $(LLVM_MAJOR) -ge 10 && echo 1 || echo 0)
  LLVM_NEWER_API               := $(shell test $(LLVM_MAJOR) -ge 16 && echo 1 || echo 0)
  LLVM_13_OK                   := $(shell test $(LLVM_MAJOR) -ge 13 && echo 1 || echo 0)
  LLVM_HAVE_LTO                := $(shell test $(LLVM_MAJOR) -ge 12 && echo 1 || echo 0)
endif

LLVM_STDCXX                  := gnu++11
LLVM_LTO                     := 0
LLVM_UNSUPPORTED             := $(shell echo "$(LLVMVER)" | grep -E -q '^[0-2]\.|^3\.[0-8]\.' && echo 1 || echo 0)
# Uncomment to see the values assigned above
# $(foreach var,LLVM_CONFIG LLVMVER LLVM_MAJOR LLVM_MINOR LLVM_TOO_NEW LLVM_TOO_OLD LLVM_TOO_NEW_DEFAULT LLVM_TOO_OLD_DEFAULT LLVM_NEW_API LLVM_NEWER_API LLVM_13_OK LLVM_HAVE_LTO LLVM_BINDIR LLVM_LIBDIR LLVM_STDCXX LLVM_APPLE_XCODE LLVM_LTO LLVM_UNSUPPORTED,$(warning $(var) = $($(var))))

ifeq "$(LLVMVER)" ""
  $(warning [!] llvm_mode needs llvm-config, which was not found. Set LLVM_CONFIG to its path and retry.)
endif

ifeq "$(LLVM_UNSUPPORTED)" "1"
  $(error llvm_mode only supports llvm from version 3.8 onwards)
endif

ifeq "$(LLVM_TOO_NEW)" "1"
  $(warning you are using an in-development llvm version - this might break llvm_mode!)
endif

ifeq "$(LLVM_TOO_OLD)" "1"
  $(warning you are using an outdated LLVM version! Please use at least LLVM 13 or newer!)
  $(shell sleep 2)
endif

# No switching the meaning of LLVM_TOO_OLD
LLVM_TOO_OLD=1

ifeq "$(LLVM_MAJOR)" "9"
  $(info [+] llvm_mode detected llvm 9, enabling neverZero implementation)
  LLVM_TOO_OLD=0
endif

ifeq "$(LLVM_NEW_API)" "1"
  $(info [+] llvm_mode detected llvm 10+, enabling neverZero implementation and c++14)
  LLVM_STDCXX = c++14
  LLVM_TOO_OLD=0
endif

ifeq "$(LLVM_NEWER_API)" "1"
  $(info [+] llvm_mode detected llvm 16+, enabling c++17)
  LLVM_STDCXX = c++17
endif

ifeq "$(LLVM_HAVE_LTO)" "1"
  $(info [+] llvm_mode detected llvm 12+, enabling afl-lto LTO implementation)
  LLVM_LTO = 1
endif

ifeq "$(LLVM_LTO)" "0"
  $(info [+] llvm_mode detected llvm < 12, afl-lto LTO will not be build.)
endif

# We were using llvm-config --bindir to get the location of clang, but
# this seems to be busted on some distros, so using the one in $PATH is
# probably better.

CC         = $(LLVM_BINDIR)/clang
CXX        = $(LLVM_BINDIR)/clang++

LLVM_APPLE_XCODE             := $(shell $(CC) -v 2>&1 | grep -q Apple && echo 1 || echo 0)
ifeq "$(LLVM_APPLE_XCODE)" "1"
  $(warning llvm_mode will not compile with Xcode clang...)
endif

# llvm-config --bindir may not providing a valid path, so ...
ifeq "$(shell test -e $(CC) || echo 1 )" "1"
  # however we must ensure that this is not a "CC=gcc make"
  ifeq "$(shell command -v $(CC) 2> /dev/null)" ""
    # we do not have a valid CC variable so we try alternatives
    ifeq "$(shell test -e '$(BIN_DIR)/clang' && echo 1)" "1"
      # we found one in the local install directory, lets use these
      CC         = $(BIN_DIR)/clang
    else
      # hope for the best
      $(warning we have trouble finding clang - llvm-config is not helping us)
      CC         = clang
    endif
  endif
endif
# llvm-config --bindir may not providing a valid path, so ...
ifeq "$(shell test -e $(CXX) || echo 1 )" "1"
  # however we must ensure that this is not a "CXX=g++ make"
  ifeq "$(shell command -v $(CXX) 2> /dev/null)" ""
    # we do not have a valid CXX variable so we try alternatives
    ifeq "$(shell test -e '$(BIN_DIR)/clang++' && echo 1)" "1"
      # we found one in the local install directory, lets use these
      CXX        = $(BIN_DIR)/clang++
    else
      # hope for the best
      $(warning we have trouble finding clang++ - llvm-config is not helping us)
      CXX        = clang++
    endif
  endif
endif

# sanity check.
# Are versions of clang --version and llvm-config --version equal?
CLANGVER = $(shell $(CC) --version | sed -E -ne '/^.*version\ ([12]?[0-9]\.[0-9]\.[0-9]).*/s//\1/p')

# I disable this because it does not make sense with what we did before (marc)
# We did exactly set these 26 lines above with these values, and it would break
# "CC=gcc make" etc. usages
ifeq "$(findstring clang, $(shell $(CC) --version 2>/dev/null))" ""
  CC_SAVE := $(LLVM_BINDIR)/clang
else
  CC_SAVE := $(CC)
endif
ifeq "$(findstring clang, $(shell $(CXX) --version 2>/dev/null))" ""
  CXX_SAVE := $(LLVM_BINDIR)/clang++
else
  CXX_SAVE := $(CXX)
endif

CLANG_BIN := $(CC_SAVE)
CLANGPP_BIN := $(CXX_SAVE)

ifeq "$(CC_SAVE)" "$(LLVM_BINDIR)/clang"
  USE_BINDIR = 1
else
  ifeq "$(CXX_SAVE)" "$(LLVM_BINDIR)/clang++"
    USE_BINDIR = 1
  else
    USE_BINDIR = 0
  endif
endif

# On old platform we cannot compile with clang because std++ libraries are too
# old. For these we need to use gcc/g++, so if we find REAL_CC and REAL_CXX
# variable we override the compiler variables here
ifneq "$(REAL_CC)" ""
  CC  = $(REAL_CC)
endif
ifneq "$(REAL_CXX)" ""
  CXX = $(REAL_CXX)
endif

#
# Now it can happen that CC points to clang - but there is no clang on the
# system. Then we fall back to cc
#
ifeq "$(shell command -v $(CC) 2>/dev/null)" ""
  CC = cc
endif
ifeq "$(shell command -v $(CXX) 2>/dev/null)" ""
  CXX = c++
endif


# After we set CC/CXX we can start makefile magic tests

#ifeq "$(shell echo 'int main() {return 0; }' | $(CC) -x c - -march=native -o .test 2>/dev/null && echo 1 || echo 0 ; rm -f .test )" "1"
#	CFLAGS_OPT = -march=native
#endif

ifeq "$(shell echo 'int main() {return 0; }' | $(CLANG_BIN) -x c - -flto=full -o .test 2>/dev/null && echo 1 || echo 0 ; rm -f .test )" "1"
        AFL_CLANG_FLTO ?= -flto=full
else
 ifeq "$(shell echo 'int main() {return 0; }' | $(CLANG_BIN) -x c - -flto=thin -o .test 2>/dev/null && echo 1 || echo 0 ; rm -f .test )" "1"
        AFL_CLANG_FLTO ?= -flto=thin
 else
  ifeq "$(shell echo 'int main() {return 0; }' | $(CLANG_BIN) -x c - -flto -o .test 2>/dev/null && echo 1 || echo 0 ; rm -f .test )" "1"
        AFL_CLANG_FLTO ?= -flto
  endif
 endif
endif

ifeq "$(LLVM_LTO)" "1"
  ifneq "$(AFL_CLANG_FLTO)" ""
    ifeq "$(AFL_REAL_LD)" ""
      ifneq "$(shell readlink $(LLVM_BINDIR)/ld.lld 2>&1)" ""
        AFL_REAL_LD = $(LLVM_BINDIR)/ld.lld
      else ifneq "$(shell command -v ld.lld 2>/dev/null)" ""
        AFL_REAL_LD = $(shell command -v ld.lld)
        TMP_LDLDD_VERSION = $(shell $(AFL_REAL_LD) --version | awk '{ print $$2 }')
        ifeq "$(LLVMVER)" "$(TMP_LDLDD_VERSION)"
          $(warning ld.lld found in a weird location ($(AFL_REAL_LD)), but its the same version as LLVM so we will allow it)
        else
          $(warning ld.lld found in a weird location ($(AFL_REAL_LD)) and its of a different version than LLMV ($(TMP_LDLDD_VERSION) vs. $(LLVMVER)) - cannot enable LTO mode)
          AFL_REAL_LD=
          LLVM_LTO = 0
        endif
        undefine TMP_LDLDD_VERSION
      else
        $(warning ld.lld not found, cannot enable LTO mode)
        LLVM_LTO = 0
      endif
    endif
  else
    $(warning clang option -flto is not working - maybe LLVMgold.so not found - cannot enable LTO mode)
    LLVM_LTO = 0
  endif
endif

AFL_CLANG_FUSELD=
ifeq "$(LLVM_LTO)" "1"
  ifeq "$(shell echo 'int main() {return 0; }' | $(CLANG_BIN) -x c - -fuse-ld=$$(command -v ld) -o .test 2>/dev/null && echo 1 || echo 0 ; rm -f .test )" "1"
    AFL_CLANG_FUSELD=1
    ifeq "$(shell echo 'int main() {return 0; }' | $(CLANG_BIN) -x c - -fuse-ld=ld.lld --ld-path=$(AFL_REAL_LD) -o .test 2>/dev/null && echo 1 || echo 0 ; rm -f .test )" "1"
      AFL_CLANG_LDPATH=1
    endif
  else
    $(warning -fuse-ld is not working, cannot enable LTO mode)
    LLVM_LTO = 0
  endif
endif

ifeq "$(shell echo 'int main() {return 0; }' | $(CLANG_BIN) -x c - -fdebug-prefix-map=$(CURDIR)=llvm_mode -o .test 2>/dev/null && echo 1 || echo 0 ; rm -f .test )" "1"
        AFL_CLANG_DEBUG_PREFIX = -fdebug-prefix-map="$(CURDIR)=llvm_mode"
else
        AFL_CLANG_DEBUG_PREFIX =
endif

CFLAGS          ?= -O3 -funroll-loops -fPIC
# -D_FORTIFY_SOURCE=1
CFLAGS_SAFE     := -Wall -g -Wno-cast-qual -Wno-variadic-macros -Wno-pointer-sign \
                   -I ./include/ -I ./instrumentation/ \
                   -DAFL_PATH=\"$(HELPER_PATH)\" -DBIN_PATH=\"$(BIN_PATH)\" \
                   -DLLVM_BINDIR=\"$(LLVM_BINDIR)\" -DVERSION=\"$(VERSION)\" \
                   -DLLVM_LIBDIR=\"$(LLVM_LIBDIR)\" -DLLVM_VERSION=\"$(LLVMVER)\" \
                   -DAFL_CLANG_FLTO=\"$(AFL_CLANG_FLTO)\" -DAFL_REAL_LD=\"$(AFL_REAL_LD)\" \
                   -DAFL_CLANG_LDPATH=\"$(AFL_CLANG_LDPATH)\" -DAFL_CLANG_FUSELD=\"$(AFL_CLANG_FUSELD)\" \
                   -DCLANG_BIN=\"$(CLANG_BIN)\" -DCLANGPP_BIN=\"$(CLANGPP_BIN)\" -DUSE_BINDIR=$(USE_BINDIR) \
                   -Wno-unused-function $(AFL_CLANG_DEBUG_PREFIX)
ifndef LLVM_DEBUG
  CFLAGS_SAFE += -Wno-deprecated
endif

ifdef CODE_COVERAGE
  override CFLAGS_SAFE += -D__AFL_CODE_COVERAGE=1
  override LDFLAGS += -ldl
endif

override CFLAGS += $(CFLAGS_SAFE)

ifdef AFL_TRACE_PC
  $(info Compile option AFL_TRACE_PC is deprecated, just set AFL_LLVM_INSTRUMENT=PCGUARD to activate when compiling targets )
endif

CXXFLAGS          ?= -O3 -funroll-loops -fPIC
# -D_FORTIFY_SOURCE=1
override CXXFLAGS += -Wall -g -I ./include/ \
                     -DVERSION=\"$(VERSION)\" -Wno-variadic-macros -Wno-deprecated-copy-with-dtor \
                     -DLLVM_MINOR=$(LLVM_MINOR) -DLLVM_MAJOR=$(LLVM_MAJOR)

ifneq "$(shell $(LLVM_CONFIG) --includedir) 2> /dev/null" ""
  CLANG_CFL  = -I$(shell $(LLVM_CONFIG) --includedir)
endif
ifneq "$(LLVM_CONFIG)" ""
  CLANG_CFL += -I$(shell dirname $(LLVM_CONFIG))/../include
endif
CLANG_CPPFL  = $$($(LLVM_CONFIG) --cxxflags) -fno-rtti -fno-exceptions -fPIC $(CXXFLAGS) $(CPPFLAGS) -Wno-deprecated-declarations
CLANG_LFL    = $$($(LLVM_CONFIG) --ldflags) $(LDFLAGS)

# wasm fuzzing: disable thread-local storage and unset LLVM debug flag
ifdef WAFL_MODE
  $(info Compiling libraries for use with WAVM)
  CLANG_CPPFL += -DNDEBUG -DNO_TLS
endif

# User teor2345 reports that this is required to make things work on MacOS X.
ifeq "$(SYS)" "Darwin"
  CLANG_LFL += -Wl,-undefined,dynamic_lookup
  override LLVM_HAVE_LTO := 0
  override LLVM_LTO := 0
else
  CLANG_CPPFL += -Wl,-znodelete
endif

ifeq "$(SYS)" "OpenBSD"
  CLANG_LFL += $$($(LLVM_CONFIG) --libdir)/libLLVM.so
  CLANG_CPPFL += -mno-retpoline
  CFLAGS += -mno-retpoline
  # Needed for unwind symbols
  LDFLAGS += -lc++abi -lpthread
endif

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"
        SHMAT_OK=1
else
        SHMAT_OK=0
        CFLAGS_SAFE += -DUSEMMAP=1
        LDFLAGS += -Wno-deprecated-declarations
endif

ifeq "$(TEST_MMAP)" "1"
        SHMAT_OK=0
        CFLAGS_SAFE += -DUSEMMAP=1
        LDFLAGS += -Wno-deprecated-declarations
endif

PROGS_ALWAYS = ./afl-cc ./afl-compiler-rt.o ./afl-compiler-rt-32.o ./afl-compiler-rt-64.o 
PROGS        = $(PROGS_ALWAYS) ./afl-llvm-pass.so ./SanitizerCoveragePCGUARD.so ./split-compares-pass.so ./split-switches-pass.so ./cmplog-routines-pass.so ./cmplog-instructions-pass.so ./cmplog-switches-pass.so ./afl-llvm-dict2file.so ./compare-transform-pass.so ./afl-ld-lto ./afl-llvm-lto-instrumentlist.so ./SanitizerCoverageLTO.so ./injection-pass.so

# If prerequisites are not given, warn, do not build anything, and exit with code 0
ifeq "$(LLVMVER)" ""
  NO_BUILD = 1
endif

ifneq "$(LLVM_UNSUPPORTED)$(LLVM_APPLE_XCODE)" "00"
  NO_BUILD = 1
endif

ifeq "$(NO_BUILD)" "1"
  TARGETS = test_shm $(PROGS_ALWAYS) afl-cc.8
else
  TARGETS = test_shm test_deps $(PROGS) afl-cc.8 test_build all_done
endif

LLVM_MIN_4_0_1 = $(shell awk 'function tonum(ver, a) {split(ver,a,"."); return a[1]*1000000+a[2]*1000+a[3]} BEGIN { exit tonum(ARGV[1]) >= tonum(ARGV[2]) }' $(LLVMVER) 4.0.1; echo $$?)

.PHONY: all
all: $(TARGETS)

.PHONY: test_shm
ifeq "$(SHMAT_OK)" "1"
test_shm:
	@echo "[+] shmat seems to be working."
	@rm -f .test2
else
test_shm:
	@echo "[-] shmat seems not to be working, switching to mmap implementation"
endif

.PHONY: no_build
no_build:
	@printf "%b\\n" "\\033[0;31mPrerequisites are not met, skipping build llvm_mode\\033[0m"

.PHONY: test_deps
test_deps:
	@echo "[*] Checking for working 'llvm-config'..."
 ifneq "$(LLVM_APPLE_XCODE)" "1"
	@type $(LLVM_CONFIG) >/dev/null 2>&1 || ( echo "[-] Oops, can't find 'llvm-config'. Install clang or set \$$LLVM_CONFIG or \$$PATH beforehand."; echo "    (Sometimes, the binary will be named llvm-config-11 or something like that.)"; exit 1 )
 endif
	@echo "[*] Checking for working '$(CC)'..."
	@type $(CC) >/dev/null 2>&1 || ( echo "[-] Oops, can't find '$(CC)'. Make sure that it's in your \$$PATH (or set \$$CC and \$$CXX)."; exit 1 )
	@echo "[*] Checking for matching versions of '$(CC)' and '$(LLVM_CONFIG)'"
ifneq "$(CLANGVER)" "$(LLVMVER)"
	@echo "[!] WARNING: we have llvm-config version $(LLVMVER) and a clang version $(CLANGVER)"
else
	@echo "[*] We have llvm-config version $(LLVMVER) with a clang version $(CLANGVER), good."
endif
	@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."

instrumentation/afl-common.o: ./src/afl-common.c
	$(CC) $(CFLAGS) $(CPPFLAGS) -c $< -o $@ $(LDFLAGS)

./afl-cc: src/afl-cc.c instrumentation/afl-common.o
	$(CC) $(CLANG_CFL) $(CFLAGS) $(CPPFLAGS) $< instrumentation/afl-common.o -o $@ -DLLVM_MINOR=$(LLVM_MINOR) -DLLVM_MAJOR=$(LLVM_MAJOR) $(LDFLAGS) -DCFLAGS_OPT=\"$(CFLAGS_OPT)\" -lm
	@ln -sf afl-cc ./afl-c++
	@ln -sf afl-cc ./afl-gcc
	@ln -sf afl-cc ./afl-g++
	@ln -sf afl-cc ./afl-clang
	@ln -sf afl-cc ./afl-clang++
	@ln -sf afl-cc ./afl-clang-fast
	@ln -sf afl-cc ./afl-clang-fast++
ifneq "$(AFL_CLANG_FLTO)" ""
ifeq "$(LLVM_LTO)" "1"
	@ln -sf afl-cc ./afl-clang-lto
	@ln -sf afl-cc ./afl-clang-lto++
	@ln -sf afl-cc ./afl-lto
	@ln -sf afl-cc ./afl-lto++
endif
endif

instrumentation/afl-llvm-common.o: instrumentation/afl-llvm-common.cc instrumentation/afl-llvm-common.h
	$(CXX) $(CFLAGS) $(CPPFLAGS) $$($(LLVM_CONFIG) --cxxflags) -fno-rtti -fPIC -std=$(LLVM_STDCXX) -c $< -o $@ 

./afl-llvm-pass.so: instrumentation/afl-llvm-pass.so.cc instrumentation/afl-llvm-common.o | test_deps
ifeq "$(LLVM_MIN_4_0_1)" "0"
	$(info [!] N-gram branch coverage instrumentation is not available for llvm version $(LLVMVER))
endif
	$(CXX) $(CLANG_CPPFL) -Wdeprecated -fno-rtti -fPIC -std=$(LLVM_STDCXX) -shared $< -o $@ $(CLANG_LFL) instrumentation/afl-llvm-common.o

./SanitizerCoveragePCGUARD.so: instrumentation/SanitizerCoveragePCGUARD.so.cc instrumentation/afl-llvm-common.o | test_deps
ifeq "$(LLVM_13_OK)" "1"
	-$(CXX) $(CLANG_CPPFL) -fno-rtti -fPIC -std=$(LLVM_STDCXX) -shared $< -o $@ $(CLANG_LFL) -Wno-deprecated-copy-dtor -Wdeprecated instrumentation/afl-llvm-common.o
endif

./afl-llvm-lto-instrumentlist.so: instrumentation/afl-llvm-lto-instrumentlist.so.cc instrumentation/afl-llvm-common.o
ifeq "$(LLVM_LTO)" "1"
	$(CXX) $(CLANG_CPPFL) -fno-rtti -fPIC -std=$(LLVM_STDCXX) -shared $< -o $@ $(CLANG_LFL) instrumentation/afl-llvm-common.o
endif

./afl-ld-lto: src/afl-ld-lto.c
ifeq "$(LLVM_LTO)" "1"
	$(CC) $(CFLAGS) $(CPPFLAGS) $< -o $@
endif

./SanitizerCoverageLTO.so: instrumentation/SanitizerCoverageLTO.so.cc instrumentation/afl-llvm-common.o
ifeq "$(LLVM_LTO)" "1"
	$(CXX) $(CLANG_CPPFL) -Wno-writable-strings -fno-rtti -fPIC -std=$(LLVM_STDCXX) -shared $< -o $@ $(CLANG_LFL) instrumentation/afl-llvm-common.o
	$(CLANG_BIN) $(CFLAGS_SAFE) $(CPPFLAGS) -Wno-unused-result -O0 $(AFL_CLANG_FLTO) -fPIC -c instrumentation/afl-llvm-rt-lto.o.c -o ./afl-llvm-rt-lto.o
	@$(CLANG_BIN) $(CFLAGS_SAFE) $(CPPFLAGS) -Wno-unused-result -O0 $(AFL_CLANG_FLTO) -m64 -fPIC -c instrumentation/afl-llvm-rt-lto.o.c -o ./afl-llvm-rt-lto-64.o 2>/dev/null; if [ "$$?" = "0" ]; then : ; fi
	@$(CLANG_BIN) $(CFLAGS_SAFE) $(CPPFLAGS) -Wno-unused-result -O0 $(AFL_CLANG_FLTO) -m32 -fPIC -c instrumentation/afl-llvm-rt-lto.o.c -o ./afl-llvm-rt-lto-32.o 2>/dev/null; if [ "$$?" = "0" ]; then : ; fi
endif

# laf
./split-switches-pass.so:	instrumentation/split-switches-pass.so.cc instrumentation/afl-llvm-common.o | test_deps
	$(CXX) $(CLANG_CPPFL) -shared $< -o $@ $(CLANG_LFL) instrumentation/afl-llvm-common.o
./compare-transform-pass.so:	instrumentation/compare-transform-pass.so.cc instrumentation/afl-llvm-common.o | test_deps
	$(CXX) $(CLANG_CPPFL) -shared $< -o $@ $(CLANG_LFL) instrumentation/afl-llvm-common.o
./split-compares-pass.so:	instrumentation/split-compares-pass.so.cc instrumentation/afl-llvm-common.o | test_deps
	$(CXX) $(CLANG_CPPFL) -shared $< -o $@ $(CLANG_LFL) instrumentation/afl-llvm-common.o
# /laf

./cmplog-routines-pass.so:	instrumentation/cmplog-routines-pass.cc instrumentation/afl-llvm-common.o | test_deps
	$(CXX) $(CLANG_CPPFL) -shared $< -o $@ $(CLANG_LFL) instrumentation/afl-llvm-common.o

./cmplog-instructions-pass.so:	instrumentation/cmplog-instructions-pass.cc instrumentation/afl-llvm-common.o | test_deps
	$(CXX) $(CLANG_CPPFL) -shared $< -o $@ $(CLANG_LFL) instrumentation/afl-llvm-common.o

./cmplog-switches-pass.so:	instrumentation/cmplog-switches-pass.cc instrumentation/afl-llvm-common.o | test_deps
	$(CXX) $(CLANG_CPPFL) -shared $< -o $@ $(CLANG_LFL) instrumentation/afl-llvm-common.o

afl-llvm-dict2file.so:	instrumentation/afl-llvm-dict2file.so.cc instrumentation/afl-llvm-common.o | test_deps
	$(CXX) $(CLANG_CPPFL) -shared $< -o $@ $(CLANG_LFL) instrumentation/afl-llvm-common.o

./injection-pass.so:	instrumentation/injection-pass.cc instrumentation/afl-llvm-common.o | test_deps
	$(CXX) $(CLANG_CPPFL) -shared $< -o $@ $(CLANG_LFL) instrumentation/afl-llvm-common.o

.PHONY: document
document:
	$(CLANG_BIN) -D_AFL_DOCUMENT_MUTATIONS $(CFLAGS_SAFE) $(CPPFLAGS) $(CLANG_CFL) -O3 -Wno-unused-result -fPIC -c instrumentation/afl-compiler-rt.o.c -o ./afl-compiler-rt.o
	@$(CLANG_BIN) -D_AFL_DOCUMENT_MUTATIONS $(CFLAGS_SAFE) $(CPPFLAGS) $(CLANG_CFL) -O3 -Wno-unused-result -m32 -fPIC -c instrumentation/afl-compiler-rt.o.c -o ./afl-compiler-rt-32.o 2>/dev/null; if [ "$$?" = "0" ]; then echo "success!"; else echo "failed (that's fine)"; fi
	@$(CLANG_BIN) -D_AFL_DOCUMENT_MUTATIONS $(CFLAGS_SAFE) $(CPPFLAGS) $(CLANG_CFL) -O3 -Wno-unused-result -m64 -fPIC -c instrumentation/afl-compiler-rt.o.c -o ./afl-compiler-rt-64.o 2>/dev/null; if [ "$$?" = "0" ]; then echo "success!"; else echo "failed (that's fine)"; fi

./afl-compiler-rt.o: instrumentation/afl-compiler-rt.o.c
	$(CC) $(CLANG_CFL) $(CFLAGS_SAFE) $(CPPFLAGS) -O3 -Wno-unused-result -fPIC -c $< -o $@

./afl-compiler-rt-32.o: instrumentation/afl-compiler-rt.o.c
	@printf "[*] Building 32-bit variant of the runtime (-m32)... "
	@$(CC) $(CLANG_CFL) $(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

./afl-compiler-rt-64.o: instrumentation/afl-compiler-rt.o.c
	@printf "[*] Building 64-bit variant of the runtime (-m64)... "
	@$(CC) $(CLANG_CFL) $(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

.PHONY: test_build
test_build: $(PROGS)
	@echo "[*] Testing the CC wrapper and instrumentation output..."
	unset AFL_USE_ASAN AFL_USE_MSAN AFL_INST_RATIO; ASAN_OPTIONS=detect_leaks=0 AFL_QUIET=1 AFL_PATH=. AFL_LLVM_LAF_ALL=1 ./afl-cc $(CFLAGS) $(CPPFLAGS) ./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
	@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 post to https://github.com/AFLplusplus/AFLplusplus/issues to troubleshoot the issue."; echo; exit 1; fi
	@echo "[+] All right, the instrumentation seems to be working!"

.PHONY: all_done
all_done: test_build
	@echo "[+] All done! You can now use './afl-cc' to compile programs."

.NOTPARALLEL: clean

.PHONY: install
install: all
	@install -d -m 755 $${DESTDIR}$(BIN_PATH) $${DESTDIR}$(HELPER_PATH) $${DESTDIR}$(DOC_PATH) $${DESTDIR}$(MISC_PATH)
	@if [ -f ./afl-cc ]; then set -e; install -m 755 ./afl-cc $${DESTDIR}$(BIN_PATH); ln -sf afl-cc $${DESTDIR}$(BIN_PATH)/afl-c++; fi
	@rm -f $${DESTDIR}$(HELPER_PATH)/afl-llvm-rt*.o $${DESTDIR}$(HELPER_PATH)/afl-gcc-rt*.o
	@if [ -f ./afl-compiler-rt.o ]; then set -e; install -m 755 ./afl-compiler-rt.o $${DESTDIR}$(HELPER_PATH); fi
	@if [ -f ./afl-lto ]; then set -e; ln -sf afl-cc $${DESTDIR}$(BIN_PATH)/afl-lto; ln -sf afl-cc $${DESTDIR}$(BIN_PATH)/afl-lto++; ln -sf afl-cc $${DESTDIR}$(BIN_PATH)/afl-clang-lto; ln -sf afl-cc $${DESTDIR}$(BIN_PATH)/afl-clang-lto++; install -m 755 ./afl-llvm-rt-lto*.o ./afl-llvm-lto-instrumentlist.so $${DESTDIR}$(HELPER_PATH); fi
	@if [ -f ./afl-ld-lto ]; then set -e; install -m 755 ./afl-ld-lto $${DESTDIR}$(BIN_PATH); fi
	@if [ -f ./afl-compiler-rt-32.o ]; then set -e; install -m 755 ./afl-compiler-rt-32.o $${DESTDIR}$(HELPER_PATH); fi
	@if [ -f ./afl-compiler-rt-64.o ]; then set -e; install -m 755 ./afl-compiler-rt-64.o $${DESTDIR}$(HELPER_PATH); fi
	@if [ -f ./compare-transform-pass.so ]; then set -e; install -m 755 ./*.so $${DESTDIR}$(HELPER_PATH); fi
	@if [ -f ./compare-transform-pass.so ]; then set -e; ln -sf afl-cc $${DESTDIR}$(BIN_PATH)/afl-clang-fast ; ln -sf ./afl-c++ $${DESTDIR}$(BIN_PATH)/afl-clang-fast++ ; ln -sf afl-cc $${DESTDIR}$(BIN_PATH)/afl-clang ; ln -sf ./afl-c++ $${DESTDIR}$(BIN_PATH)/afl-clang++ ; fi
	@if [ -f ./SanitizerCoverageLTO.so ]; then set -e; ln -sf afl-cc $${DESTDIR}$(BIN_PATH)/afl-clang-lto ; ln -sf ./afl-c++ $${DESTDIR}$(BIN_PATH)/afl-clang-lto++ ; fi
	set -e; install -m 644 ./dynamic_list.txt $${DESTDIR}$(HELPER_PATH)
	install -m 644 instrumentation/README.*.md $${DESTDIR}$(DOC_PATH)/

%.8: %
	@echo .TH $* 8 $(BUILD_DATE) "AFL++" > ./$@
	@echo .SH NAME >> ./$@
	@printf "%s" ".B $* \- " >> ./$@
	@./$* -h 2>&1 | head -n 1 | sed -e "s/$$(printf '\e')[^m]*m//g" >> ./$@
	@echo .B $* >> ./$@
	@echo >> ./$@
	@echo .SH SYNOPSIS >> ./$@
	@./$* -h 2>&1 | head -n 3 | tail -n 1 | sed 's/^\.\///' >> ./$@
	@echo >> ./$@
	@echo .SH OPTIONS >> ./$@
	@echo .nf >> ./$@
	@./$* -h 2>&1 | tail -n +4 >> ./$@
	@echo >> ./$@
	@echo .SH AUTHOR >> ./$@
	@echo "AFL++ was written by Michal \"lcamtuf\" Zalewski and is maintained by Marc \"van Hauser\" Heuse <mh@mh-sec.de>, Dominik Maier <domenukk@gmail.com>, Andrea Fioraldi <andreafioraldi@gmail.com> and Heiko \"hexcoder-\" Eissfeldt <heiko.eissfeldt@hexco.de>" >> ./$@
	@echo  The homepage of AFL++ is: https://github.com/AFLplusplus/AFLplusplus >> ./$@
	@echo >> ./$@
	@echo .SH LICENSE >> ./$@
	@echo Apache License Version 2.0, January 2004 >> ./$@
	@ln -sf afl-cc.8 ./afl-c++.8
	@ln -sf afl-cc.8 ./afl-clang-fast.8
	@ln -sf afl-cc.8 ./afl-clang-fast++.8
ifneq "$(AFL_CLANG_FLTO)" ""
ifeq "$(LLVM_LTO)" "1"
	@ln -sf afl-cc.8 ./afl-clang-lto.8
	@ln -sf afl-cc.8 ./afl-clang-lto++.8
	@ln -sf afl-cc.8 ./afl-lto.8
	@ln -sf afl-cc.8 ./afl-lto++.8
endif
endif

.PHONY: clean
clean:
	rm -f *.o *.so *~ a.out core core.[1-9][0-9]* .test2 test-instr .test-instr0 .test-instr1 *.dwo
	rm -f $(PROGS) afl-common.o ./afl-c++ ./afl-lto ./afl-lto++ ./afl-clang-lto* ./afl-clang-fast* ./afl-clang*.8 ./ld ./afl-ld ./afl-compiler-rt*.o ./afl-llvm-rt*.o instrumentation/*.o