mk: add library version extension

To differentiate libraries that break ABI, we add a library version number
suffix to the library, which must be incremented when a given libraries ABI is
broken.  This patch enforces that addition, sets the initial abi soname
extension to 1 for each library and creates a symlink to the base SONAME so that
the test applications will link properly.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>

lib/librte_acl/Makefile

@@ -39,6 +39,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR)
 
 EXPORT_MAP := rte_acl_version.map
 
+LIBABIVER := 1
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_ACL) += tb_mem.c
 

lib/librte_cfgfile/Makefile

@@ -41,6 +41,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_cfgfile_version.map
 
+LIBABIVER := 1
+
 #
 # all source are stored in SRCS-y
 #

lib/librte_cmdline/Makefile

@@ -38,6 +38,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3
 
 EXPORT_MAP := rte_cmdline_version.map
 
+LIBABIVER := 1
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_CMDLINE) := cmdline.c
 SRCS-$(CONFIG_RTE_LIBRTE_CMDLINE) += cmdline_cirbuf.c

lib/librte_compat/Makefile

@@ -32,6 +32,8 @@
 include $(RTE_SDK)/mk/rte.vars.mk
 
 
+LIBABIVER := 1
+
 # install includes
 SYMLINK-y-include := rte_compat.h
 

lib/librte_distributor/Makefile

@@ -39,6 +39,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR)
 
 EXPORT_MAP := rte_distributor_version.map
 
+LIBABIVER := 1
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_DISTRIBUTOR) := rte_distributor.c
 

lib/librte_eal/bsdapp/eal/Makefile

@@ -48,6 +48,8 @@ CFLAGS += $(WERROR_FLAGS) -O3
 
 EXPORT_MAP := rte_eal_version.map
 
+LIBABIVER := 1
+
 # specific to linuxapp exec-env
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) := eal.c
 SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_memory.c

lib/librte_eal/linuxapp/eal/Makefile

@@ -35,6 +35,8 @@ LIB = librte_eal.a
 
 EXPORT_MAP := rte_eal_version.map
 
+LIBABIVER := 1
+
 VPATH += $(RTE_SDK)/lib/librte_eal/common
 
 CFLAGS += -I$(SRCDIR)/include

lib/librte_ether/Makefile

@@ -41,6 +41,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_ether_version.map
 
+LIBABIVER := 1
+
 SRCS-y += rte_ethdev.c
 
 #

lib/librte_hash/Makefile

@@ -39,6 +39,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR)
 
 EXPORT_MAP := rte_hash_version.map
 
+LIBABIVER := 1
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_HASH) := rte_hash.c
 SRCS-$(CONFIG_RTE_LIBRTE_HASH) += rte_fbk_hash.c

lib/librte_ip_frag/Makefile

@@ -39,6 +39,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR)
 
 EXPORT_MAP := rte_ipfrag_version.map
 
+LIBABIVER := 1
+
 #source files
 ifeq ($(CONFIG_RTE_MBUF_REFCNT),y)
 SRCS-$(CONFIG_RTE_LIBRTE_IP_FRAG) += rte_ipv4_fragmentation.c

lib/librte_ivshmem/Makefile

@@ -38,6 +38,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3
 
 EXPORT_MAP := rte_ivshmem_version.map
 
+LIBABIVER := 1
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_IVSHMEM) := rte_ivshmem.c
 

lib/librte_kni/Makefile

@@ -38,6 +38,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3 -fno-strict-aliasing
 
 EXPORT_MAP := rte_kni_version.map
 
+LIBABIVER := 1
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_KNI) := rte_kni.c
 

lib/librte_kvargs/Makefile

@@ -40,6 +40,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3
 
 EXPORT_MAP := rte_kvargs_version.map
 
+LIBABIVER := 1
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_KVARGS) := rte_kvargs.c
 

lib/librte_lpm/Makefile

@@ -39,6 +39,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR)
 
 EXPORT_MAP := rte_lpm_version.map
 
+LIBABIVER := 1
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_LPM) := rte_lpm.c rte_lpm6.c
 

lib/librte_malloc/Makefile

@@ -34,6 +34,8 @@ include $(RTE_SDK)/mk/rte.vars.mk
 # library name
 LIB = librte_malloc.a
 
+LIBABIVER := 1
+
 CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3
 
 EXPORT_MAP := rte_malloc_version.map

lib/librte_mbuf/Makefile

@@ -38,6 +38,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3
 
 EXPORT_MAP := rte_mbuf_version.map
 
+LIBABIVER := 1
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_MBUF) := rte_mbuf.c
 

lib/librte_mempool/Makefile

@@ -38,6 +38,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3
 
 EXPORT_MAP := rte_mempool_version.map
 
+LIBABIVER := 1
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_MEMPOOL) +=  rte_mempool.c
 ifeq ($(CONFIG_RTE_LIBRTE_XEN_DOM0),y)

lib/librte_meter/Makefile

@@ -41,6 +41,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_meter_version.map
 
+LIBABIVER := 1
+
 #
 # all source are stored in SRCS-y
 #

lib/librte_pipeline/Makefile

@@ -41,6 +41,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_pipeline_version.map
 
+LIBABIVER := 1
+
 #
 # all source are stored in SRCS-y
 #

lib/librte_pmd_af_packet/Makefile

@@ -40,6 +40,8 @@ LIB = librte_pmd_af_packet.a
 
 EXPORT_MAP := rte_pmd_af_packet_version.map
 
+LIBABIVER := 1
+
 CFLAGS += -O3
 CFLAGS += $(WERROR_FLAGS)
 

lib/librte_pmd_bond/Makefile

@@ -41,6 +41,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_eth_bond_version.map
 
+LIBABIVER := 1
+
 #
 # all source are stored in SRCS-y
 #

lib/librte_pmd_e1000/Makefile

@@ -41,6 +41,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_pmd_e1000_version.map
 
+LIBABIVER := 1
+
 ifeq ($(CC), icc)
 #
 # CFLAGS for icc

lib/librte_pmd_enic/Makefile

@@ -39,6 +39,8 @@ LIB = librte_pmd_enic.a
 
 EXPORT_MAP := rte_pmd_enic_version.map
 
+LIBABIVER := 1
+
 CFLAGS += -I$(RTE_SDK)/lib/librte_pmd_enic/vnic/
 CFLAGS += -I$(RTE_SDK)/lib/librte_pmd_enic/
 CFLAGS += -O3

lib/librte_pmd_i40e/Makefile

@@ -41,6 +41,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_pmd_i40e_version.map
 
+LIBABIVER := 1
+
 #
 # Add extra flags for base driver files (also known as shared code)
 # to disable warnings

lib/librte_pmd_ixgbe/Makefile

@@ -41,6 +41,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_pmd_ixgbe_version.map
 
+LIBABIVER := 1
+
 ifeq ($(CC), icc)
 #
 # CFLAGS for icc

lib/librte_pmd_pcap/Makefile

@@ -42,6 +42,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_pmd_pcap_version.map
 
+LIBABIVER := 1
+
 #
 # all source are stored in SRCS-y
 #

lib/librte_pmd_ring/Makefile

@@ -41,6 +41,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_eth_ring_version.map
 
+LIBABIVER := 1
+
 #
 # all source are stored in SRCS-y
 #

lib/librte_pmd_virtio/Makefile

@@ -41,6 +41,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_pmd_virtio_version.map
 
+LIBABIVER := 1
+
 #
 # all source are stored in SRCS-y
 #

lib/librte_pmd_vmxnet3/Makefile

@@ -68,6 +68,8 @@ VPATH += $(RTE_SDK)/lib/librte_pmd_vmxnet3/vmxnet3
 
 EXPORT_MAP := rte_pmd_vmxnet3_version.map
 
+LIBABIVER := 1
+
 #
 # all source are stored in SRCS-y
 #

lib/librte_pmd_xenvirt/Makefile

@@ -41,6 +41,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_eth_xenvirt_version.map
 
+LIBABIVER := 1
+
 #
 # all source are stored in SRCS-y
 #

lib/librte_port/Makefile

@@ -41,6 +41,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_port_version.map
 
+LIBABIVER := 1
+
 #
 # all source are stored in SRCS-y
 #

lib/librte_power/Makefile

@@ -38,6 +38,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3 -fno-strict-aliasing
 
 EXPORT_MAP := rte_power_version.map
 
+LIBABIVER := 1
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_POWER) := rte_power.c rte_power_acpi_cpufreq.c
 SRCS-$(CONFIG_RTE_LIBRTE_POWER) += rte_power_kvm_vm.c guest_channel.c

lib/librte_ring/Makefile

@@ -38,6 +38,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3
 
 EXPORT_MAP := rte_ring_version.map
 
+LIBABIVER := 1
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_RING) := rte_ring.c
 

lib/librte_sched/Makefile

@@ -43,6 +43,8 @@ CFLAGS_rte_red.o := -D_GNU_SOURCE
 
 EXPORT_MAP := rte_sched_version.map
 
+LIBABIVER := 1
+
 #
 # all source are stored in SRCS-y
 #

lib/librte_table/Makefile

@@ -41,6 +41,8 @@ CFLAGS += $(WERROR_FLAGS)
 
 EXPORT_MAP := rte_table_version.map
 
+LIBABIVER := 1
+
 #
 # all source are stored in SRCS-y
 #

lib/librte_timer/Makefile

@@ -38,6 +38,8 @@ CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3
 
 EXPORT_MAP := rte_timer_version.map
 
+LIBABIVER := 1
+
 # all source are stored in SRCS-y
 SRCS-$(CONFIG_RTE_LIBRTE_TIMER) := rte_timer.c
 

lib/librte_vhost/Makefile

@@ -36,6 +36,8 @@ LIB = librte_vhost.a
 
 EXPORT_MAP := rte_vhost_version.map
 
+LIBABIVER := 1
+
 CFLAGS += $(WERROR_FLAGS) -I$(SRCDIR) -O3 -D_FILE_OFFSET_BITS=64 -lfuse
 LDFLAGS += -lfuse
 # all source are stored in SRCS-y

mk/rte.lib.mk

@@ -37,10 +37,9 @@ include $(RTE_SDK)/mk/internal/rte.depdirs-pre.mk
 
 # VPATH contains at least SRCDIR
 VPATH += $(SRCDIR)
-
 ifeq ($(RTE_BUILD_SHARED_LIB),y)
-LIB := $(patsubst %.a,%.so,$(LIB))
 
+LIB := $(patsubst %.a,%.so.$(LIBABIVER),$(LIB))
 CPU_LDFLAGS += --version-script=$(SRCDIR)/$(EXPORT_MAP)
 
 endif
@@ -113,6 +112,10 @@ lib_dir = [ -d $(RTE_OUTPUT)/lib ] || mkdir -p $(RTE_OUTPUT)/lib;
 #
 ifeq ($(RTE_BUILD_SHARED_LIB),y)
 $(LIB): $(OBJS-y) $(DEP_$(LIB)) FORCE
+ifeq ($(LIBABIVER),)
+	@echo "Must Specify a $(LIB) ABI version"
+	@false
+endif
 	@[ -d $(dir $@) ] || mkdir -p $(dir $@)
 	$(if $(D),\
 		@echo -n "$< -> $@ " ; \
@@ -126,6 +129,7 @@ $(LIB): $(OBJS-y) $(DEP_$(LIB)) FORCE
 		$(depfile_missing),\
 		$(depfile_newer)),\
 		$(O_TO_S_DO))
+
 ifeq ($(RTE_BUILD_COMBINE_LIBS),y)
 	$(if $(or \
         $(file_missing),\
@@ -163,9 +167,13 @@ endif
 # install lib in $(RTE_OUTPUT)/lib
 #
 $(RTE_OUTPUT)/lib/$(LIB): $(LIB)
+	$(eval LIBSONAME := $(basename $(LIB)))
 	@echo "  INSTALL-LIB $(LIB)"
 	@[ -d $(RTE_OUTPUT)/lib ] || mkdir -p $(RTE_OUTPUT)/lib
 	$(Q)cp -f $(LIB) $(RTE_OUTPUT)/lib
+ifeq ($(RTE_BUILD_SHARED_LIB),y)
+	$(Q)ln -s -f $< $(RTE_OUTPUT)/lib/$(LIBSONAME)
+endif
 
 #
 # Clean all generated files