ifndef RM_INCLUDE_DIR
	RM_INCLUDE_DIR=include/
endif
ifndef RM_SOURCE_DIR
	RM_SOURCE_DIR=rmutil/
endif
ifndef MODULE_SOURCE_DIR
	MODULE_SOURCE_DIR=source/
endif

CFLAGS ?= -g -fPIC -O3 -std=gnu99 -Wall -Wno-unused-function
CFLAGS += -I$(RM_INCLUDE_DIR)
CC=gcc

BUILD_OBJ_DIR=build/objects/
BUILD_DIR=build/

_SRCS_RM=util.c strings.c sds.c vector.c alloc.c periodic.c
SRCS=$(addprefix $(RM_SOURCE_DIR),$(_SRCS_RM))

_OBJS=util.o strings.o sds.o vector.o alloc.o periodic.o
OBJS=$(addprefix $(BUILD_OBJ_DIR),$(_OBJS))
# $(warning $(OBJS))

# find the OS
uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')

# Compile flags for linux / osx
ifeq ($(uname_S),Linux)
	SHOBJ_CFLAGS ?=  -fno-common -g -ggdb
	SHOBJ_LDFLAGS ?= -shared -Bsymbolic
else
	SHOBJ_CFLAGS ?= -dynamic -fno-common -g -ggdb
	SHOBJ_LDFLAGS ?= -bundle -undefined dynamic_lookup
endif

$(shell mkdir -p build/objects)

all: rmutil $(BUILD_DIR)module.so

rmutil: $(BUILD_DIR)librmutil.a

clean:
	rm -rf $(BUILD_DIR)

$(BUILD_DIR)librmutil.a: $(OBJS)
	ar rcs $@ $^

$(BUILD_OBJ_DIR)util.o: $(RM_SOURCE_DIR)util.c
	$(CC) $(CFLAGS) -c -o $@ $^

$(BUILD_OBJ_DIR)strings.o: $(RM_SOURCE_DIR)strings.c
	$(CC) $(CFLAGS) -c -o $@ $^

$(BUILD_OBJ_DIR)sds.o: $(RM_SOURCE_DIR)sds.c
	$(CC) $(CFLAGS) -c -o $@ $^

$(BUILD_OBJ_DIR)vector.o: $(RM_SOURCE_DIR)vector.c
	$(CC) $(CFLAGS) -c -o $@ $^

$(BUILD_OBJ_DIR)alloc.o: $(RM_SOURCE_DIR)alloc.c
	$(CC) $(CFLAGS) -c -o $@ $^

$(BUILD_OBJ_DIR)periodic.o: $(RM_SOURCE_DIR)periodic.c
	$(CC) $(CFLAGS) -c -o $@ $^

$(BUILD_DIR)module.so: $(BUILD_DIR)librmutil.a $(BUILD_OBJ_DIR)module.o
	$(LD) -o $@ $(BUILD_OBJ_DIR)module.o $(SHOBJ_LDFLAGS) $(LIBS) -L$(BUILD_DIR) -lrmutil -lc 

$(BUILD_OBJ_DIR)module.o: $(MODULE_SOURCE_DIR)module.c
	$(CC) $(CFLAGS) -c -o $@ $^