506f51cc0d
When a change makes really hard to keep ABI compatibility, instead of waiting next release to break the ABI, it is smoother to introduce the new code as a preview and disable it when packaging. The flag RTE_NEXT_ABI must be used to "ifdef" the new code. When the release is out, a dynamically linked application can use the new shared libraries with the old ABI while developpers can prepare their application for the next ABI by reading the deprecation notice and easily testing the new code. When starting the next release cycle, the "ifdefs" will be removed and the ABI break will be marked by incrementing LIBABIVER. The map files will also be updated. The default value is enabled to be developer compliant. The packagers must disable it as done in pkg/dpdk.spec. When enabled, all shared library numbers are incremented by appending a minor .1 to the old ABI number. In the next release, only impacted libraries will have a major +1 increment. The impacted libraries must provide an alternative map file to use with this option. The ABI policy is updated. Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com> Acked-by: Neil Horman <nhorman@tuxdriver.com>
199 lines
6.2 KiB
Makefile
199 lines
6.2 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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include $(RTE_SDK)/mk/internal/rte.compile-pre.mk
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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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include $(RTE_SDK)/mk/internal/rte.depdirs-pre.mk
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# VPATH contains at least SRCDIR
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VPATH += $(SRCDIR)
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ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
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LIB := $(patsubst %.a,%.so.$(LIBABIVER),$(LIB))
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ifeq ($(CONFIG_RTE_NEXT_ABI),y)
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LIB := $(LIB).1
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endif
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CPU_LDFLAGS += --version-script=$(SRCDIR)/$(EXPORT_MAP)
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endif
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_BUILD = $(LIB)
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_INSTALL = $(INSTALL-FILES-y) $(SYMLINK-FILES-y) $(RTE_OUTPUT)/lib/$(LIB)
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_CLEAN = doclean
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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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exe2cmd = $(strip $(call dotfile,$(patsubst %,%.cmd,$(1))))
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ifeq ($(LINK_USING_CC),1)
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# Override the definition of LD here, since we're linking with CC
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LD := $(CC) $(CPU_CFLAGS)
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_CPU_LDFLAGS := $(call linkerprefix,$(CPU_LDFLAGS))
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else
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_CPU_LDFLAGS := $(CPU_LDFLAGS)
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endif
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O_TO_A = $(AR) crDs $(LIB) $(OBJS-y)
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O_TO_A_STR = $(subst ','\'',$(O_TO_A)) #'# fix syntax highlight
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O_TO_A_DISP = $(if $(V),"$(O_TO_A_STR)"," AR $(@)")
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O_TO_A_CMD = "cmd_$@ = $(O_TO_A_STR)"
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O_TO_A_DO = @set -e; \
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echo $(O_TO_A_DISP); \
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$(O_TO_A) && \
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echo $(O_TO_A_CMD) > $(call exe2cmd,$(@))
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O_TO_S = $(LD) $(_CPU_LDFLAGS) -shared $(OBJS-y) -Wl,-soname,$(LIB) -o $(LIB)
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O_TO_S_STR = $(subst ','\'',$(O_TO_S)) #'# fix syntax highlight
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O_TO_S_DISP = $(if $(V),"$(O_TO_S_STR)"," LD $(@)")
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O_TO_S_DO = @set -e; \
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echo $(O_TO_S_DISP); \
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$(O_TO_S) && \
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echo $(O_TO_S_CMD) > $(call exe2cmd,$(@))
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ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),n)
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O_TO_C = $(AR) crus $(LIB_ONE) $(OBJS-y)
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O_TO_C_STR = $(subst ','\'',$(O_TO_C)) #'# fix syntax highlight
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O_TO_C_DISP = $(if $(V),"$(O_TO_C_STR)"," AR_C $(@)")
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O_TO_C_DO = @set -e; \
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$(lib_dir) \
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$(copy_obj)
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else
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O_TO_C = $(LD) -shared $(OBJS-y) -o $(LIB_ONE)
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O_TO_C_STR = $(subst ','\'',$(O_TO_C)) #'# fix syntax highlight
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O_TO_C_DISP = $(if $(V),"$(O_TO_C_STR)"," LD_C $(@)")
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O_TO_C_DO = @set -e; \
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$(lib_dir) \
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$(copy_obj)
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endif
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copy_obj = cp -f $(OBJS-y) $(RTE_OUTPUT)/build/lib;
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lib_dir = [ -d $(RTE_OUTPUT)/lib ] || mkdir -p $(RTE_OUTPUT)/lib;
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-include .$(LIB).cmd
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#
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# Archive objects in .a file if needed
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#
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ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
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$(LIB): $(OBJS-y) $(DEP_$(LIB)) FORCE
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ifeq ($(LIBABIVER),)
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@echo "Must Specify a $(LIB) ABI version"
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@false
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endif
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@[ -d $(dir $@) ] || mkdir -p $(dir $@)
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$(if $(D),\
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@echo -n "$< -> $@ " ; \
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echo -n "file_missing=$(call boolean,$(file_missing)) " ; \
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echo -n "cmdline_changed=$(call boolean,$(call cmdline_changed,$(O_TO_S_STR))) " ; \
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echo -n "depfile_missing=$(call boolean,$(depfile_missing)) " ; \
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echo "depfile_newer=$(call boolean,$(depfile_newer)) ")
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$(if $(or \
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$(file_missing),\
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$(call cmdline_changed,$(O_TO_S_STR)),\
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$(depfile_missing),\
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$(depfile_newer)),\
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$(O_TO_S_DO))
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ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),y)
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$(if $(or \
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$(file_missing),\
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$(call cmdline_changed,$(O_TO_C_STR)),\
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$(depfile_missing),\
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$(depfile_newer)),\
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$(O_TO_C_DO))
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endif
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else
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$(LIB): $(OBJS-y) $(DEP_$(LIB)) FORCE
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@[ -d $(dir $@) ] || mkdir -p $(dir $@)
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$(if $(D),\
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@echo -n "$< -> $@ " ; \
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echo -n "file_missing=$(call boolean,$(file_missing)) " ; \
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echo -n "cmdline_changed=$(call boolean,$(call cmdline_changed,$(O_TO_A_STR))) " ; \
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echo -n "depfile_missing=$(call boolean,$(depfile_missing)) " ; \
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echo "depfile_newer=$(call boolean,$(depfile_newer)) ")
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$(if $(or \
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$(file_missing),\
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$(call cmdline_changed,$(O_TO_A_STR)),\
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$(depfile_missing),\
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$(depfile_newer)),\
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$(O_TO_A_DO))
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ifeq ($(CONFIG_RTE_BUILD_COMBINE_LIBS),y)
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$(if $(or \
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$(file_missing),\
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$(call cmdline_changed,$(O_TO_C_STR)),\
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$(depfile_missing),\
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$(depfile_newer)),\
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$(O_TO_C_DO))
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endif
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endif
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#
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# install lib in $(RTE_OUTPUT)/lib
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#
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$(RTE_OUTPUT)/lib/$(LIB): $(LIB)
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@echo " INSTALL-LIB $(LIB)"
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@[ -d $(RTE_OUTPUT)/lib ] || mkdir -p $(RTE_OUTPUT)/lib
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$(Q)cp -f $(LIB) $(RTE_OUTPUT)/lib
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ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
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$(Q)ln -s -f $< $(basename $(basename $@))
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endif
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#
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# Clean all generated files
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#
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.PHONY: clean
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clean: _postclean
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.PHONY: doclean
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doclean:
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$(Q)rm -rf $(LIB) $(OBJS-all) $(DEPS-all) $(DEPSTMP-all) \
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$(CMDS-all) $(INSTALL-FILES-all)
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$(Q)rm -f $(_BUILD_TARGETS) $(_INSTALL_TARGETS) $(_CLEAN_TARGETS)
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include $(RTE_SDK)/mk/internal/rte.compile-post.mk
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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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include $(RTE_SDK)/mk/internal/rte.depdirs-post.mk
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.PHONY: FORCE
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FORCE:
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