Hi,
I would like to list both the object files and linker script as
prerequisites to linker pattern rule. However the linker script needs
to appear as an argument to a linker option. I'm having trouble
coming up with a clean way to handle this. Here is what I've come up
with.
TARGET = foo
TARGET_ARCH = -mmcu=attiny25
VPATH = $(SRCDIR)
SRCS= main.c serial.c state.c
LD_SCRIPT = avr25.x
LDFLAGS = -Wl,-Map=$(TARGET).map -o $@
# Add linker script option if script file name is set.
ifneq ($(strip $(LD_SCRIPT)),)
LDFLAGS += -Wl,-T$(SRCDIR)/$(LD_SCRIPT)
endif
CC = avr-gcc
O = .o
ABS = .elf
OBJS= ${SRCS:.c=$(O)}
%$(ABS) : $(LD_SCRIPT) $(OBJS)
$(CC) $(LDFLAGS) $(TARGET_ARCH) $(filter-out %.x,$^) \
$(LOADLIBES) $(LDLIBS) -o $@
Is there a better way to deal with a case like this where one of the
prerequisites needs special treatment? Or should I give up on the
idea of a using generic pattern rule.
thanks,
galen
--
Galen Seitz
[email protected]
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