feb9f680cd
Before this patch, the management of dependencies between directories had several issues: - the generation of .depdirs, done at configuration is slow: it can take more than one minute on some slow targets (usually ~10s on a standard PC without -j). - for instance, it is possible to express a dependency like: - app/foo depends on lib/librte_foo - and lib/librte_foo depends on app/bar But this won't work because the directories are traversed with a depth-first algorithm, so we have to choose between doing 'app' before or after 'lib'. - the script depdirs-rule.sh is too complex. - we cannot use "make -d" for debug, because the output of make is used for the generation of .depdirs. This patch moves the DEPDIRS-* variables in the upper Makefile, making the dependencies much easier to calculate. A DEPDIRS variable is still used to process library dependencies in LDLIBS. After this commit, "make config" is almost immediate. Signed-off-by: Olivier Matz <olivier.matz@6wind.com> Tested-by: Robin Jarry <robin.jarry@6wind.com> Tested-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
115 lines
3.9 KiB
Makefile
115 lines
3.9 KiB
Makefile
# BSD LICENSE
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#
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# Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
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# All rights reserved.
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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
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Intel Corporation nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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##### if sourced from kernel Kbuild system
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ifneq ($(KERNELRELEASE),)
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override EXTRA_CFLAGS = $(MODULE_CFLAGS) $(EXTRA_KERNEL_CFLAGS)
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obj-m += $(MODULE).o
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ifneq ($(MODULE),$(notdir $(SRCS-y:%.c=%)))
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$(MODULE)-objs += $(notdir $(SRCS-y:%.c=%.o))
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endif
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##### if launched from rte build system
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else
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include $(RTE_SDK)/mk/internal/rte.install-pre.mk
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include $(RTE_SDK)/mk/internal/rte.clean-pre.mk
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include $(RTE_SDK)/mk/internal/rte.build-pre.mk
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# VPATH contains at least SRCDIR
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VPATH += $(SRCDIR)
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_BUILD = $(MODULE).ko
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_INSTALL = $(INSTALL-FILES-y) $(SYMLINK-FILES-y) \
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$(RTE_OUTPUT)/kmod/$(MODULE).ko
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_CLEAN = doclean
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SRCS_LINKS = $(addsuffix _link,$(SRCS-y))
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compare = $(strip $(subst $(1),,$(2)) $(subst $(2),,$(1)))
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.PHONY: all
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all: install
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.PHONY: install
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install: build _postinstall
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_postinstall: build
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.PHONY: build
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build: _postbuild
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# Link all sources in build directory
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%_link: FORCE
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$(if $(call compare,$(notdir $*),$*),\
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@if [ ! -f $(notdir $(*)) ]; then ln -nfs $(SRCDIR)/$(*) . ; fi,\
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@if [ ! -f $(notdir $(*)) ]; then ln -nfs $(SRCDIR)/$(*) . ; fi)
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# build module
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$(MODULE).ko: $(SRCS_LINKS)
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@if [ ! -f $(notdir Makefile) ]; then ln -nfs $(SRCDIR)/Makefile . ; fi
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@$(MAKE) -C $(RTE_KERNELDIR) M=$(CURDIR) O=$(RTE_KERNELDIR) \
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CC="$(KERNELCC)" CROSS_COMPILE=$(CROSS) V=$(if $V,1,0)
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# install module in $(RTE_OUTPUT)/kmod
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$(RTE_OUTPUT)/kmod/$(MODULE).ko: $(MODULE).ko
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@echo INSTALL-MODULE $(MODULE).ko
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@[ -d $(RTE_OUTPUT)/kmod ] || mkdir -p $(RTE_OUTPUT)/kmod
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@cp -f $(MODULE).ko $(RTE_OUTPUT)/kmod
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# install module
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modules_install:
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@$(MAKE) -C $(RTE_KERNELDIR) M=$(CURDIR) O=$(RTE_KERNELDIR) \
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modules_install
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.PHONY: clean
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clean: _postclean
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# do a make clean and remove links
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.PHONY: doclean
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doclean:
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@if [ ! -f $(notdir Makefile) ]; then ln -nfs $(SRCDIR)/Makefile . ; fi
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$(Q)$(MAKE) -C $(RTE_KERNELDIR) M=$(CURDIR) O=$(RTE_KERNELDIR) clean
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@$(foreach FILE,$(SRCS-y) $(SRCS-n) $(SRCS-),\
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if [ -h $(notdir $(FILE)) ]; then rm -f $(notdir $(FILE)) ; fi ;)
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@if [ -h $(notdir Makefile) ]; then rm -f $(notdir Makefile) ; fi
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@rm -f $(_BUILD_TARGETS) $(_INSTALL_TARGETS) $(_CLEAN_TARGETS) \
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$(INSTALL-FILES-all)
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include $(RTE_SDK)/mk/internal/rte.install-post.mk
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include $(RTE_SDK)/mk/internal/rte.clean-post.mk
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include $(RTE_SDK)/mk/internal/rte.build-post.mk
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.PHONY: FORCE
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FORCE:
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endif
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