MacOS nits

GNUmakefile

@@ -315,7 +315,9 @@ llvm:
 
 .PHONY: gcc_plugin
 gcc_plugin:
+ifneq "$(SYS)" "Darwin"
 	-$(MAKE) -f GNUmakefile.gcc_plugin
+endif
 
 .PHONY: man
 man:    $(MANPAGES)
@@ -561,7 +563,7 @@ all_done: test_build
 
 .PHONY: clean
 clean:
-	rm -f $(PROGS) libradamsa.so afl-fuzz-document afl-as as afl-g++ afl-clang afl-clang++ *.o src/*.o *~ a.out core core.[1-9][0-9]* *.stackdump .test .test1 .test2 test-instr .test-instr0 .test-instr1 afl-qemu-trace afl-gcc-fast afl-gcc-pass.so afl-g++-fast ld *.so *.8 test/unittests/*.o test/unittests/unit_maybe_alloc test/unittests/preallocable .afl-* afl-gcc afl-g++ afl-clang afl-clang++ test/unittests/unit_hash test/unittests/unit_rand
+	rm -rf $(PROGS) libradamsa.so afl-fuzz-document afl-as as afl-g++ afl-clang afl-clang++ *.o src/*.o *~ a.out core core.[1-9][0-9]* *.stackdump .test .test1 .test2 test-instr .test-instr0 .test-instr1 afl-qemu-trace afl-gcc-fast afl-gcc-pass.so afl-g++-fast ld *.so *.8 test/unittests/*.o test/unittests/unit_maybe_alloc test/unittests/preallocable .afl-* afl-gcc afl-g++ afl-clang afl-clang++ test/unittests/unit_hash test/unittests/unit_rand *.dSYM
 	-$(MAKE) -f GNUmakefile.llvm clean
 	-$(MAKE) -f GNUmakefile.gcc_plugin clean
 	$(MAKE) -C utils/libdislocator clean
@@ -595,15 +597,19 @@ endif
 .PHONY: distrib
 distrib: all
 	-$(MAKE) -j -f GNUmakefile.llvm
+ifneq "$(SYS)" "Darwin"
 	-$(MAKE) -f GNUmakefile.gcc_plugin
+endif
 	$(MAKE) -C utils/libdislocator
 	$(MAKE) -C utils/libtokencap
 	$(MAKE) -C utils/afl_network_proxy
 	$(MAKE) -C utils/socket_fuzzing
 	$(MAKE) -C utils/argv_fuzzing
 	-$(MAKE) -C frida_mode
+ifneq "$(SYS)" "Darwin"
 	-cd qemu_mode && sh ./build_qemu_support.sh
 	-cd unicorn_mode && unset CFLAGS && sh ./build_unicorn_support.sh
+endif
 
 .PHONY: binary-only
 binary-only: test_shm test_python ready $(PROGS)
@@ -613,13 +619,17 @@ binary-only: test_shm test_python ready $(PROGS)
 	$(MAKE) -C utils/socket_fuzzing
 	$(MAKE) -C utils/argv_fuzzing
 	-$(MAKE) -C frida_mode
+ifneq "$(SYS)" "Darwin"
 	-cd qemu_mode && sh ./build_qemu_support.sh
 	-cd unicorn_mode && unset CFLAGS && sh ./build_unicorn_support.sh
+endif
 
 .PHONY: source-only
 source-only: all
 	-$(MAKE) -j -f GNUmakefile.llvm
+ifneq "$(SYS)" "Darwin"
 	-$(MAKE) -f GNUmakefile.gcc_plugin
+endif
 	$(MAKE) -C utils/libdislocator
 	$(MAKE) -C utils/libtokencap
 
@@ -662,7 +672,9 @@ install: all $(MANPAGES)
 	@if [ -f utils/aflpp_driver/libAFLDriver.a ]; then set -e; install -m 644 utils/aflpp_driver/libAFLDriver.a $${DESTDIR}$(HELPER_PATH); fi
 	@if [ -f utils/aflpp_driver/libAFLQemuDriver.a ]; then set -e; install -m 644 utils/aflpp_driver/libAFLQemuDriver.a $${DESTDIR}$(HELPER_PATH); fi
 	-$(MAKE) -f GNUmakefile.llvm install
+ifneq "$(SYS)" "Darwin"
 	-$(MAKE) -f GNUmakefile.gcc_plugin install
+endif
 	ln -sf afl-cc $${DESTDIR}$(BIN_PATH)/afl-gcc
 	ln -sf afl-cc $${DESTDIR}$(BIN_PATH)/afl-g++
 	ln -sf afl-cc $${DESTDIR}$(BIN_PATH)/afl-clang

GNUmakefile.llvm

@@ -53,7 +53,7 @@ LLVM_HAVE_LTO = $(shell $(LLVM_CONFIG) --version 2>/dev/null | egrep -q '^1[1-9]
 LLVM_BINDIR = $(shell $(LLVM_CONFIG) --bindir 2>/dev/null)
 LLVM_LIBDIR = $(shell $(LLVM_CONFIG) --libdir 2>/dev/null)
 LLVM_STDCXX = gnu++11
-LLVM_APPLE_XCODE = $(shell clang -v 2>&1 | grep -q Apple && echo 1 || echo 0)
+LLVM_APPLE_XCODE = $(shell $(CC) -v 2>&1 | grep -q Apple && echo 1 || echo 0)
 LLVM_LTO   = 0
 
 ifeq "$(LLVMVER)" ""
@@ -279,6 +279,8 @@ CLANG_LFL    = `$(LLVM_CONFIG) --ldflags` $(LDFLAGS)
 # User teor2345 reports that this is required to make things work on MacOS X.
 ifeq "$(SYS)" "Darwin"
   CLANG_LFL += -Wl,-flat_namespace -Wl,-undefined,suppress
+  override LLVM_HAVE_LTO := 0
+  override LLVM_LTO := 0
 else
   CLANG_CPPFL += -Wl,-znodelete
 endif

docs/INSTALL.md

@@ -74,12 +74,15 @@ and depend mostly on user feedback.
 To build AFL, install llvm (and perhaps gcc) from brew and follow the general
 instructions for Linux. If possible avoid Xcode at all cost.
 
-`brew install wget git make llvm`
+`brew install wget git make cmake llvm`
 
-Be sure to setup PATH to point to the correct clang binaries and use gmake, e.g.:
+Be sure to setup PATH to point to the correct clang binaries and use the
+freshly installed clang, clang++ and gmake, e.g.:
 
 ```
 export PATH="/usr/local/Cellar/llvm/12.0.1/bin/:$PATH"
+export CC=clang
+export CXX=clang++
 gmake
 cd frida_mode
 gmake

utils/optimin/src/OptiMin.cpp

@@ -134,8 +134,8 @@ static cl::opt<std::string>  MemLimit(
     "m", cl::desc("Memory limit for child process (default=none)"),
     cl::value_desc("megs"), cl::init("none"));
 static cl::opt<std::string> Timeout(
-    "t", cl::desc("Run time limit for child process (default=none)"),
+    "t", cl::desc("Run time limit for child process (default=5000)"),
-    cl::value_desc("msec"), cl::init("none"));
+    cl::value_desc("msec"), cl::init("4000"));
 static cl::opt<bool> CrashMode(
     "C", cl::desc("Keep crashing inputs, reject everything else"));
 static cl::opt<bool> QemuMode("Q", cl::desc("Use binary-only instrumentation"));