VARIANT := default ifneq ($(VARIANT),) CONFIG_FILE := config/$(VARIANT).mk include config/$(VARIANT).mk endif ifeq ($(VARIANT),default) SUFFIX := else SUFFIX := -$(VARIANT) endif OUT := out$(SUFFIX) define safe_flag $(shell $(CC) $(if $(filter clang%,$(CC)),-Werror=unknown-warning-option) -E $1 - /dev/null 2>&1 && echo $1 || echo $2) endef CPPFLAGS := $(CPPFLAGS) -D_GNU_SOURCE -I include SHARED_FLAGS := -pipe -O3 -flto -fPIC -fvisibility=hidden -fno-plt \ -fstack-clash-protection $(call safe_flag,-fcf-protection) -fstack-protector-strong \ -Wall -Wextra $(call safe_flag,-Wcast-align=strict,-Wcast-align) -Wcast-qual -Wwrite-strings ifeq ($(CONFIG_WERROR),true) SHARED_FLAGS += -Werror endif ifeq ($(CONFIG_NATIVE),true) SHARED_FLAGS += -march=native endif ifeq ($(CONFIG_UBSAN),true) SHARED_FLAGS += -fsanitize=undefined -fno-sanitize-recover=undefined endif CFLAGS := $(CFLAGS) -std=c17 $(SHARED_FLAGS) -Wmissing-prototypes -Wstrict-prototypes CXXFLAGS := $(CXXFLAGS) -std=c++17 -fsized-deallocation $(SHARED_FLAGS) LDFLAGS := $(LDFLAGS) -Wl,-O1,--as-needed,-z,defs,-z,relro,-z,now,-z,nodlopen,-z,text SOURCES := chacha.c h_malloc.c memory.c pages.c random.c util.c OBJECTS := $(SOURCES:.c=.o) ifeq ($(CONFIG_CXX_ALLOCATOR),true) # make sure LTO is compatible in case CC and CXX don't match (such as clang and g++) CXX := $(CC) LDLIBS += -lstdc++ SOURCES += new.cc OBJECTS += new.o endif OBJECTS := $(addprefix $(OUT)/,$(OBJECTS)) ifeq (,$(filter $(CONFIG_SEAL_METADATA),true false)) $(error CONFIG_SEAL_METADATA must be true or false) endif ifeq (,$(filter $(CONFIG_ZERO_ON_FREE),true false)) $(error CONFIG_ZERO_ON_FREE must be true or false) endif ifeq (,$(filter $(CONFIG_WRITE_AFTER_FREE_CHECK),true false)) $(error CONFIG_WRITE_AFTER_FREE_CHECK must be true or false) endif ifeq (,$(filter $(CONFIG_SLOT_RANDOMIZE),true false)) $(error CONFIG_SLOT_RANDOMIZE must be true or false) endif ifeq (,$(filter $(CONFIG_SLAB_CANARY),true false)) $(error CONFIG_SLAB_CANARY must be true or false) endif ifeq (,$(filter $(CONFIG_EXTENDED_SIZE_CLASSES),true false)) $(error CONFIG_EXTENDED_SIZE_CLASSES must be true or false) endif ifeq (,$(filter $(CONFIG_LARGE_SIZE_CLASSES),true false)) $(error CONFIG_LARGE_SIZE_CLASSES must be true or false) endif ifeq (,$(filter $(CONFIG_STATS),true false)) $(error CONFIG_STATS must be true or false) endif ifeq (,$(filter $(CONFIG_SELF_INIT),true false)) $(error CONFIG_SELF_INIT must be true or false) endif CPPFLAGS += \ -DCONFIG_SEAL_METADATA=$(CONFIG_SEAL_METADATA) \ -DZERO_ON_FREE=$(CONFIG_ZERO_ON_FREE) \ -DWRITE_AFTER_FREE_CHECK=$(CONFIG_WRITE_AFTER_FREE_CHECK) \ -DSLOT_RANDOMIZE=$(CONFIG_SLOT_RANDOMIZE) \ -DSLAB_CANARY=$(CONFIG_SLAB_CANARY) \ -DSLAB_QUARANTINE_RANDOM_LENGTH=$(CONFIG_SLAB_QUARANTINE_RANDOM_LENGTH) \ -DSLAB_QUARANTINE_QUEUE_LENGTH=$(CONFIG_SLAB_QUARANTINE_QUEUE_LENGTH) \ -DCONFIG_EXTENDED_SIZE_CLASSES=$(CONFIG_EXTENDED_SIZE_CLASSES) \ -DCONFIG_LARGE_SIZE_CLASSES=$(CONFIG_LARGE_SIZE_CLASSES) \ -DGUARD_SLABS_INTERVAL=$(CONFIG_GUARD_SLABS_INTERVAL) \ -DGUARD_SIZE_DIVISOR=$(CONFIG_GUARD_SIZE_DIVISOR) \ -DREGION_QUARANTINE_RANDOM_LENGTH=$(CONFIG_REGION_QUARANTINE_RANDOM_LENGTH) \ -DREGION_QUARANTINE_QUEUE_LENGTH=$(CONFIG_REGION_QUARANTINE_QUEUE_LENGTH) \ -DREGION_QUARANTINE_SKIP_THRESHOLD=$(CONFIG_REGION_QUARANTINE_SKIP_THRESHOLD) \ -DFREE_SLABS_QUARANTINE_RANDOM_LENGTH=$(CONFIG_FREE_SLABS_QUARANTINE_RANDOM_LENGTH) \ -DCONFIG_CLASS_REGION_SIZE=$(CONFIG_CLASS_REGION_SIZE) \ -DN_ARENA=$(CONFIG_N_ARENA) \ -DCONFIG_STATS=$(CONFIG_STATS) \ -DCONFIG_SELF_INIT=$(CONFIG_SELF_INIT) $(OUT)/libhardened_malloc$(SUFFIX).so: $(OBJECTS) | $(OUT) $(CC) $(CFLAGS) $(LDFLAGS) -shared $^ $(LDLIBS) -o $@ $(OUT): mkdir -p $(OUT) $(OUT)/chacha.o: chacha.c chacha.h util.h $(CONFIG_FILE) | $(OUT) $(COMPILE.c) $(OUTPUT_OPTION) $< $(OUT)/h_malloc.o: h_malloc.c include/h_malloc.h mutex.h memory.h pages.h random.h util.h $(CONFIG_FILE) | $(OUT) $(COMPILE.c) $(OUTPUT_OPTION) $< $(OUT)/memory.o: memory.c memory.h util.h $(CONFIG_FILE) | $(OUT) $(COMPILE.c) $(OUTPUT_OPTION) $< $(OUT)/new.o: new.cc include/h_malloc.h util.h $(CONFIG_FILE) | $(OUT) $(COMPILE.cc) $(OUTPUT_OPTION) $< $(OUT)/pages.o: pages.c pages.h memory.h util.h $(CONFIG_FILE) | $(OUT) $(COMPILE.c) $(OUTPUT_OPTION) $< $(OUT)/random.o: random.c random.h chacha.h util.h $(CONFIG_FILE) | $(OUT) $(COMPILE.c) $(OUTPUT_OPTION) $< $(OUT)/util.o: util.c util.h $(CONFIG_FILE) | $(OUT) $(COMPILE.c) $(OUTPUT_OPTION) $< check: tidy tidy: clang-tidy --extra-arg=-std=c17 $(filter %.c,$(SOURCES)) -- $(CPPFLAGS) clang-tidy --extra-arg=-std=c++17 $(filter %.cc,$(SOURCES)) -- $(CPPFLAGS) clean: rm -f $(OUT)/libhardened_malloc.so $(OBJECTS) $(MAKE) -C test/ clean test: $(OUT)/libhardened_malloc$(SUFFIX).so $(MAKE) -C test/ python3 -m unittest discover --start-directory test/ .PHONY: check clean tidy test