makefile

這是一個實時嵌入式作業系統 實作了MCS51 ARM等MCU

############################################################################
# arch/arm/src/Makefile
#
#   Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
#   Author: Gregory Nutt <[e-mail]>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
#    used to endorse or promote products derived from this software
#    without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################################

-include $(TOPDIR)/Make.defs
-include chip/Make.defs

ARCH_SRCDIR	= $(TOPDIR)/arch/$(CONFIG_ARCH)/src
CFLAGS		+= -I$(ARCH_SRCDIR)/chip -I$(ARCH_SRCDIR)/common -I$(TOPDIR)/sched

HEAD_AOBJ	= $(HEAD_ASRC:.S=$(OBJEXT))

ASRCS		= $(CHIP_ASRCS) $(CMN_ASRCS)
AOBJS		= $(ASRCS:.S=$(OBJEXT))

CSRCS		= $(CHIP_CSRCS) $(CMN_CSRCS)
COBJS		= $(CSRCS:.c=$(OBJEXT))

SRCS		= $(ASRCS) $(CSRCS)
OBJS		= $(AOBJS) $(COBJS)

LDFLAGS		= $(ARCHSCRIPT)
EXTRA_LIBS	=

LINKLIBS	=
LDPATHES	= $(addprefix -L$(TOPDIR)/,$(dir $(LINKLIBS)))
LDLIBS		= $(patsubst lib%,-l%,$(basename $(notdir $(LINKLIBS))))

BOARDDIR	= $(TOPDIR)/arch/$(CONFIG_ARCH)/src/board

LIBGCC		= ${shell $(CC) -print-libgcc-file-name}

VPATH		= chip:common

all: $(HEAD_OBJ) libarch$(LIBEXT)

$(AOBJS) $(HEAD_AOBJ): %$(OBJEXT): %.S
	$(call ASSEMBLE, $<, $@)

$(COBJS): %$(OBJEXT): %.c
	$(call COMPILE, $<, $@)

libarch$(LIBEXT): $(OBJS)
	@( for obj in $(OBJS) ; do \
		$(call ARCHIVE, $@, $${obj}); \
	done ; )

board/libboard$(LIBEXT):
	$(MAKE) -C board TOPDIR="$(TOPDIR)" libboard$(LIBEXT)

nuttx: $(HEAD_AOBJ) board/libboard$(LIBEXT)
	@echo "LD: nuttx"
	@$(LD) --entry=__start $(LDFLAGS) $(LDPATHES) -L$(BOARDDIR) -o $(TOPDIR)/$@ $(HEAD_AOBJ) \
		--start-group $(LDLIBS) -lboard --end-group $(EXTRA_LIBS) $(LIBGCC) 
	@$(NM) $(TOPDIR)/$@ | \
	grep -v '\(compiled\)\|\(\$(OBJEXT)$$\)\|\( [aUw] \)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' | \
	sort > $(TOPDIR)/System.map
	@export vflashstart=`$(OBJDUMP) --all-headers $(TOPDIR)/$@ | grep _vflashstart | cut -d' ' -f1`;  \
	if [ ! -z "$$vflashstart" ]; then \
		$(OBJCOPY) --adjust-section-vma=.vector=0x$$vflashstart $(TOPDIR)/$@ $(TOPDIR)/$@.flashimage; \
		mv $(TOPDIR)/$@.flashimage $(TOPDIR)/$@; \
	fi
ifeq ($(CONFIG_RRLOAD_BINARY),y)
	@$(TOPDIR)/tools/mkimage.sh --Prefix $(CROSSDEV) $(TOPDIR)/$@ $(TOPDIR)/$@.rr
	@if [ -w /tftpboot ] ; then \
		cp -f $(TOPDIR)/$@.rr /tftpboot/$@.rr.${CONFIG_ARCH}; \
	fi
endif

.depend: Makefile chip/Make.defs $(SRCS)
	@if [ -e board/Makefile ]; then \
		$(MAKE) -C board TOPDIR="$(TOPDIR)" depend ; \
	fi
	@$(MKDEP) --dep-path chip --dep-path common $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
	@touch $@

depend: .depend

clean:
	@if [ -e board/Makefile ]; then \
		$(MAKE) -C board TOPDIR="$(TOPDIR)" clean ; \
	fi
	@rm -f libarch$(LIBEXT) *~ .*.swp
	$(call CLEAN)

distclean: clean
	@if [ -e board/Makefile ]; then \
		$(MAKE) -C board TOPDIR="$(TOPDIR)" distclean ; \
	fi
	@rm -f Make.dep .depend

-include Make.dep