https://bugs.gentoo.org/800941

--- a/GNUmakefile
+++ b/GNUmakefile
@@ -310,12 +310,12 @@ all:	test_x86 test_shm test_python ready $(PROGS) afl-as llvm gcc_plugin test_bu
 
 .PHONY: llvm
 llvm:
-	-$(MAKE) -j -f GNUmakefile.llvm
+	$(MAKE) -j -f GNUmakefile.llvm
 	@test -e afl-cc || { echo "[-] Compiling afl-cc failed. You seem not to have a working compiler." ; exit 1; }
 
 .PHONY: gcc_plugin
 gcc_plugin:
-	-$(MAKE) -f GNUmakefile.gcc_plugin
+	$(MAKE) -f GNUmakefile.gcc_plugin
 
 .PHONY: man
 man:    $(MANPAGES)
@@ -562,8 +562,8 @@ all_done: test_build
 .PHONY: clean
 clean:
 	rm -f $(PROGS) libradamsa.so afl-fuzz-document afl-as as afl-g++ afl-clang afl-clang++ *.o src/*.o *~ a.out core core.[1-9][0-9]* *.stackdump .test .test1 .test2 test-instr .test-instr0 .test-instr1 afl-qemu-trace afl-gcc-fast afl-gcc-pass.so afl-g++-fast ld *.so *.8 test/unittests/*.o test/unittests/unit_maybe_alloc test/unittests/preallocable .afl-* afl-gcc afl-g++ afl-clang afl-clang++ test/unittests/unit_hash test/unittests/unit_rand
-	-$(MAKE) -f GNUmakefile.llvm clean
-	-$(MAKE) -f GNUmakefile.gcc_plugin clean
+	$(MAKE) -f GNUmakefile.llvm clean
+	$(MAKE) -f GNUmakefile.gcc_plugin clean
 	$(MAKE) -C utils/libdislocator clean
 	$(MAKE) -C utils/libtokencap clean
 	$(MAKE) -C utils/aflpp_driver clean
@@ -618,8 +618,8 @@ binary-only: test_shm test_python ready $(PROGS)
 
 .PHONY: source-only
 source-only: all
-	-$(MAKE) -j -f GNUmakefile.llvm
-	-$(MAKE) -f GNUmakefile.gcc_plugin
+	$(MAKE) -j -f GNUmakefile.llvm
+	$(MAKE) -f GNUmakefile.gcc_plugin
 	$(MAKE) -C utils/libdislocator
 	$(MAKE) -C utils/libtokencap
 
@@ -661,8 +661,8 @@ install: all $(MANPAGES)
 	@if [ -f utils/afl_network_proxy/afl-network-server ]; then $(MAKE) -C utils/afl_network_proxy install; fi
 	@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
-	-$(MAKE) -f GNUmakefile.gcc_plugin install
+	$(MAKE) -f GNUmakefile.llvm install
+	$(MAKE) -f GNUmakefile.gcc_plugin install
 	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
--- a/GNUmakefile.llvm
+++ b/GNUmakefile.llvm
@@ -460,6 +460,7 @@ document:
 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)
+	@test -e test-instr || { echo "[-] Testing CC wrapper failed. You seem not to have a working compiler." ; exit 1; }
 	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