SRCS = $(sort $(wildcard src/*/*.c))
OBJS = $(SRCS:.c=.o)

CFLAGS  = -Os -ffloat-store -nostdinc -ffreestanding -std=c99 -D_XOPEN_SOURCE=700 -pipe
INC     = -I./include -I./src/internal -I./arch/$(ARCH)
AR      = $(CROSS_COMPILE)ar
RANLIB  = $(CROSS_COMPILE)ranlib
OBJCOPY = $(CROSS_COMPILE)objcopy

STATIC_LIBS = lib/libm.a
ALL_LIBS = $(STATIC_LIBS)

-include config.mak

all: $(ALL_LIBS)

clean:
	rm -f $(OBJS)
	rm -f $(ALL_LIBS) lib/*.[ao] lib/*.so
	rm -f include/bits

include/bits:
	@test "$(ARCH)" || { echo "Please set ARCH in config.mak before running make." ; exit 1 ; }
	ln -sf ../arch/$(ARCH)/bits $@

include/bits/alltypes.h.sh: include/bits

include/bits/alltypes.h: include/bits/alltypes.h.sh
	sh $< > $@

%.o: $(ARCH)/%.s
	$(CC) $(CFLAGS) $(INC) -c -o $@ $<

%.o: %.c include/bits/alltypes.h
	$(CC) $(CFLAGS) $(INC) -c -o $@ $<

lib/libm.a: $(OBJS)
	rm -f $@
	$(AR) rc $@ $(OBJS)
	$(RANLIB) $@