Makefile

LIB = periphery.so
SRCS = src/lua_periphery.c src/lua_mmio.c src/lua_gpio.c src/lua_led.c src/lua_pwm.c src/lua_spi.c src/lua_i2c.c src/lua_serial.c

C_PERIPHERY = c-periphery
C_PERIPHERY_LIB = $(C_PERIPHERY)/periphery.a

ifndef LUA
LUA = lua
endif

ifndef LUA_INCDIR
LUA_CFLAGS = $(shell pkg-config --cflags $(LUA))
else
LUA_CFLAGS = -I$(LUA_INCDIR)
endif

LUA_LIBDIR ?= $(shell pkg-config --variable=INSTALL_CMOD $(LUA))

###########################################################################

MOD_CFLAGS = $(CFLAGS)
MOD_CFLAGS += -std=c99 -pedantic -D_XOPEN_SOURCE=700
MOD_CFLAGS += -Wall -Wextra -Wno-unused-parameter $(DEBUG) -fPIC -I. $(LUA_CFLAGS)

MOD_LDFLAGS = $(LDFLAGS)
MOD_LDFLAGS += -shared

ifdef CROSS_COMPILE
CC = $(CROSS_COMPILE)gcc
endif

###########################################################################

.PHONY: all
all: $(LIB)

.PHONY: clean
clean:
	$(MAKE) -C $(C_PERIPHERY) clean
	rm -rf $(LIB)

.PHONY: install
install:
	install -m 0644 -D -T $(LIB) $(LUA_LIBDIR)/$(LIB)

###########################################################################

$(LIB): $(C_PERIPHERY_LIB) $(SRCS)
	$(CC) $(MOD_CFLAGS) $(MOD_LDFLAGS) $(SRCS) $(C_PERIPHERY_LIB) -o $@

$(C_PERIPHERY_LIB): $(C_PERIPHERY)/Makefile
	$(MAKE) -C $(C_PERIPHERY)