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https://github.com/zephyrproject-rtos/zephyr
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90 lines
3.1 KiB
Plaintext
90 lines
3.1 KiB
Plaintext
# obj.rules - rules for building object files
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#
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# Copyright (c) 2013-2014 Wind River Systems, Inc.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1) Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2) Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# 3) Neither the name of Wind River Systems nor the names of its contributors
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# may be used to endorse or promote products derived from this software without
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# specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# user can set the following:
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#
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# EXTRA_CFLAGS: common CFLAGS appended to default CFLAGS_<host>
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# EXTRA_CFLAGS_<host>: CFLAGS appended to default CFLAGS_<host>
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# HOST_ONLY=<host>: build only for a specific host (i.e. linux2)
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#
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# and can override the following:
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#
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# CFLAGS_<host>: CFLAGS for a specific host (i.e. linux2)
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# SOURCES: list of C files
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#
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# defaults:
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#
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# CFLAGS_<host>: -I. -Wall -Werror -g -m32 -D<host>
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# SOURCES: all C files in current directory
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# object code files
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define generate_objs
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$1/%.o: %.c ${vOBJDIR_DEP_$1}
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@${vCC_$1} ${CFLAGS_$1} -o $$@ -c $$<
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@printf "%-12s%-20s -> %s\n" "[Compiling] " "$$<" "$$@"
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endef
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# object code directory
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define generate_dir
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${vOBJDIR_DEP_$1}: ${MAKEFILE_LIST}
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@mkdir -p $$(dir $$@)
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@touch $$@
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endef
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# .d dependency files
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define generate_deps
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$1/%.d: %.c ${vOBJDIR_DEP_$1}
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@${vCC_$1} ${CFLAGS_$1} -MM $$< -MF $$@d
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@sed 's#$${<:.c=.o}#$${@:.d=.o}#' <$$@d >$$@
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@rm -f $$@d
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endef
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$(foreach host, ${HOST}, $(eval $(call generate_objs,$(host))))
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$(foreach host, ${HOST}, $(eval $(call generate_dir,$(host))))
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$(foreach host, ${HOST}, $(eval $(call generate_deps,$(host))))
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# only generate .d files if not cleaning
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ifeq (${MAKECMDGOALS},pristine)
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vIGNORE_DOT_D=y
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endif
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ifeq ($(findstring clean,${MAKECMDGOALS}),clean)
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vIGNORE_DOT_D=y
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endif
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ifneq (${vIGNORE_DOT_D},y)
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ALL_HOSTS = $(foreach host,${HOST},$(if ${HOST_ONLY},$(findstring ${HOST_ONLY},${host}),${host}))
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-include $(foreach src,${SOURCES}, $(addsuffix /${src:.c=.d},${ALL_HOSTS}))
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endif # vIGNORE_DOT_D
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