1 files changed, 111 insertions, 0 deletions
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..643c951
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,111 @@
+# $@: name of the target file (one before colon)
+# $<: name of first prerequisite file (first one after colon)
+# $^: names of all prerequisite files (space separated)
+# $*: stem (bit which matches the % wildcard in rule definition)
+#
+# VAR = val: Normal setting - values within are recursively expand when var used.
+# VAR := val: Setting of var with simple expansion of values inside - values are expanded at decl time.
+# VAR ?= val: Set var only if it doesn't have a value.
+# VAR += val: Append val to existing value (or set if var didn't exist).
+
+# To use static analyzer:
+#   http://clang-analyzer.llvm.org/scan-build.html
+# Ie:
+#   scan-build -k -V --use-analyzer ~/bin/clang make
+
+NAME = inotify-info
+
+CFG ?= release
+ifeq ($(CFG), debug)
+    ASAN ?= 1
+endif
+
+LD = $(CC)
+RM = rm -f
+MKDIR = mkdir -p
+VERBOSE ?= 0
+
+COMPILER = $(shell $(CC) -v 2>&1 | grep -q "clang version" && echo clang || echo gcc)
+
+WARNINGS = -Wall -Wextra -Wpedantic -Wmissing-include-dirs -Wformat=2 -Wshadow
+ifneq ($(COMPILER),clang)
+  # https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html
+  WARNINGS += -Wsuggest-attribute=format -Wall
+endif
+
+CFLAGS = $(WARNINGS) -march=native -fno-exceptions -gdwarf-4 -g2 -ggnu-pubnames -gsplit-dwarf
+CFLAGS += -D_LARGEFILE64_SOURCE=1 -D_FILE_OFFSET_BITS=64
+CXXFLAGS = -fno-rtti -Woverloaded-virtual
+LDFLAGS = -march=native -gdwarf-4 -g2 -Wl,--build-id=sha1
+LIBS = -Wl,--no-as-needed -lm -ldl -lpthread -lstdc++
+
+CFILES = \
+	inotify-info.cpp \
+	lfqueue/lfqueue.c
+
+# Useful GCC address sanitizer checks not enabled by default
+# https://kristerw.blogspot.com/2018/06/useful-gcc-address-sanitizer-checks-not.html
+
+ifeq ($(ASAN), 1)
+	# https://gcc.gnu.org/gcc-5/changes.html
+	#  -fsanitize=float-cast-overflow: check that the result of floating-point type to integer conversions do not overflow;
+	#  -fsanitize=vptr: enable checking of C++ member function calls, member accesses and some conversions between pointers to base and derived classes, detect if the referenced object does not have the correct dynamic type.
+	ASAN_FLAGS = -fno-omit-frame-pointer -fno-optimize-sibling-calls
+	ASAN_FLAGS += -fsanitize=address # fast memory error detector (heap, stack, global buffer overflow, and use-after free)
+	ASAN_FLAGS += -fsanitize=leak # detect leaks
+	ASAN_FLAGS += -fsanitize=undefined # fast undefined behavior detector
+	ASAN_FLAGS += -fsanitize=float-divide-by-zero # detect floating-point division by zero;
+	ASAN_FLAGS += -fsanitize=bounds # enable instrumentation of array bounds and detect out-of-bounds accesses;
+	ASAN_FLAGS += -fsanitize=object-size # enable object size checking, detect various out-of-bounds accesses.
+	ASAN_FLAGS += -fsanitize=alignment # enable alignment checking, detect various misaligned objects;
+	CFLAGS += $(ASAN_FLAGS)
+	LDFLAGS += $(ASAN_FLAGS)
+endif
+
+ifeq ($(CFG), debug)
+	ODIR=_debug
+	CFLAGS += -O0 -DDEBUG
+	CFLAGS += -D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC -D_GLIBCXX_SANITIZE_VECTOR -D_LIBCPP_DEBUG=1 -D_LIBCPP_ENABLE_DEBUG_MODE=1
+else
+	ODIR=_release
+	CFLAGS += -O2 -DNDEBUG
+endif
+
+PROJ = $(ODIR)/$(NAME)
+$(info Building $(ODIR)/$(NAME)...)
+
+ifeq ($(VERBOSE), 1)
+	VERBOSE_PREFIX=
+else
+	VERBOSE_PREFIX=@
+endif
+
+C_OBJS = ${CFILES:%.c=${ODIR}/%.o}
+OBJS = ${C_OBJS:%.cpp=${ODIR}/%.o}
+
+all: $(PROJ)
+
+$(ODIR)/$(NAME): $(OBJS)
+	@echo "Linking $@...";
+	$(VERBOSE_PREFIX)$(LD) $(LDFLAGS) $^ $(LIBS) -o $@
+
+-include $(OBJS:.o=.d)
+
+$(ODIR)/%.o: %.c Makefile
+	$(VERBOSE_PREFIX)echo "---- $< ----";
+	@$(MKDIR) $(dir $@)
+	$(VERBOSE_PREFIX)$(CC) -MMD -MP -std=gnu99 $(CFLAGS) -o $@ -c $<
+
+$(ODIR)/%.o: %.cpp Makefile
+	$(VERBOSE_PREFIX)echo "---- $< ----";
+	@$(MKDIR) $(dir $@)
+	$(VERBOSE_PREFIX)$(CXX) -MMD -MP -std=c++11 $(CFLAGS) $(CXXFLAGS) -o $@ -c $<
+
+.PHONY: clean
+
+clean:
+	@echo Cleaning...
+	$(VERBOSE_PREFIX)$(RM) $(PROJ)
+	$(VERBOSE_PREFIX)$(RM) $(OBJS)
+	$(VERBOSE_PREFIX)$(RM) $(OBJS:.o=.d)
+	$(VERBOSE_PREFIX)$(RM) $(OBJS:.o=.dwo)