Makefile

SRC=src
PREFIX?=/usr/local

CFLAGS+=-O3 -g -pthread
CFLAGS+=-D_XOPEN_SOURCE=500  # needed for `ftw`
LIBS+=
LDFLAGS+=-pthread

libraries := src/libmqlog.so src/libmqlog.a

CFLAGS+=-Wall -Wextra -Werror -Winit-self -std=c99 -pedantic -fPIC
CFLAGS+=-Wformat -Werror=format-security
CFLAGS+=-D_BSD_SOURCE -D_DEFAULT_SOURCE # needed for `madvise` and `ftruncate`


ifeq ($(shell expr `$(CC) -v 2> /dev/stdout  | grep -i gcc | tail -n 1 | sed -e 's/.*\(gcc\).*/\1/I'`),gcc)
GCC_GTEQ_490 := $(shell expr `$(CC) -dumpversion | sed -e 's/\.\([0-9][0-9]\)/\1/g' -e 's/\.\([0-9]\)/0\1/g' -e 's/^[0-9]\{3,4\}$$/&00/'` \>= 40900)
ifeq ($(GCC_GTEQ_490),1)
CFLAGS+=-fstack-protector-strong # available with gcc >= 4.9.x
endif
endif

LDFLAGS+=-Wl,-O1 -Wl,--discard-all -Wl,-z,relro -shared

sources := $(wildcard $(SRC)/*.c)
source-to-object = $(subst .c,.o,$(filter %.c,$1))
objects = $(call source-to-object,$(sources))
dependencies = $(subst .o,.d,$(objects))

include_dirs := $(SRC)
CFLAGS += $(addprefix -I,$(include_dirs))
vpath %.h $(include_dirs)

MV := mv -f
RM := rm -rf
SED := sed
CP := cp -pf

.PHONY: all
all: build

.PHONY: build
build: $(libraries)

%.so: $(objects)
	$(CC) -o $@ $^ $(LDFLAGS) $(LIBS)

%.a: $(objects)
	$(AR) rcs $@ $^

.PHONY: clean
clean:
	$(RM) $(objects) $(dependencies) $(libraries) $(SRC)/*.gcda \
          $(SRC)/*.gcno $(SRC)/*.gcov lcov-html cov.info
	@$(MAKE) CC=$(CC) -C test clean
	@$(MAKE) CC=$(CC) -C bench clean

.PHONY: test
test: build
	@$(MAKE) CC=$(CC) -C test run

.PHONY: test-valgrind
test-valgrind: build
	@$(MAKE) CC=$(CC) -C test valgrind

.PHONY: gcov
gcov:
	@$(MAKE) CC=$(CC) CFLAGS+="$(CFLAGS) --coverage" LDFLAGS+="$(LDFLAGS) --coverage" build

.PHONY: lcov
lcov:
	@geninfo --no-checksum -o cov.info src
	@genhtml --legend -o lcov-html cov.info

.PHONY: bench
bench: build
	@$(MAKE) CC=$(CC) -C bench run

.PHONY: perf
perf: build
	@$(MAKE) CC=$(CC) -C bench perf

.PHONY: install
install: all
	@mkdir -p $(PREFIX)/include
	@mkdir -p $(PREFIX)/lib
	$(CP) src/mqlog.h $(PREFIX)/include/
	$(CP) src/mqlogerrno.h $(PREFIX)/include/
	$(CP) src/prot.h $(PREFIX)/include/
	$(CP) src/libmqlog.so $(PREFIX)/lib/
	$(CP) src/libmqlog.a $(PREFIX)/lib/

.PHONY: uninstall
uninstall:
	$(RM) $(PREFIX)/include/mqlog.h
	$(RM) $(PREFIX)/include/mqlogerrno.h
	$(RM) $(PREFIX)/include/prot.h
	$(RM) $(PREFIX)/lib/libmqlog.so
	$(RM) $(PREFIX)/lib/libmqlog.a

# Dependencies
ifneq ($(MAKECMDGOALS),clean)
include $(dependencies)
endif

%.d: %.c
	$(CC) $(CFLAGS) $(TARGET_ARCH) -M $< | \
	$(SED) 's,\($(notdir $*)\.o\) *:,$(dir $@)\1 $@: ,' > $@.tmp
	$(MV) $@.tmp $@