[dpdk-dev,v3,2/5] mk: always generate combined lib linker script
Commit Message
After the patch, building DPDK will always generate a linker script
(name use is based on CONFIG_RTE_LIBNAME config option) that behaves
as a combined library when linking against it.
Signed-off-by: Sergio Gonzalez Monroy <sergio.gonzalez.monroy@intel.com>
---
mk/rte.combinedlib.mk | 89 +++++++++++++++++++++++++++++++++++++++++++++++++++
mk/rte.sdkbuild.mk | 3 ++
2 files changed, 92 insertions(+)
create mode 100644 mk/rte.combinedlib.mk
new file mode 100644
@@ -0,0 +1,89 @@
+# BSD LICENSE
+#
+# Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+# * 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.
+# * Neither the name of Intel Corporation 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 $(RTE_SDK)/mk/rte.vars.mk
+
+default: all
+
+ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
+EXT:=.so
+else
+EXT:=.a
+endif
+
+COMBINEDLIB := lib$(RTE_LIBNAME).so
+
+CORE_LIBS := librte_eal librte_mempool librte_malloc librte_ring
+CORE_LIBS := $(addsuffix $(EXT),$(CORE_LIBS))
+
+ALL_LIBS := $(wildcard $(RTE_OUTPUT)/lib/*$(EXT))
+ALL_LIBS := $(filter-out $(CORE_LIBS),$(notdir $(ALL_LIBS)))
+
+# If we change the combined lib name and we build dpdk without doing
+# 'make uninstall', the previous linker script would be present in the dir.
+filter_type = $(if $(shell file $(lib) | grep "ASCII text"),,$(lib))
+LIBS := $(foreach lib,$(ALL_LIBS),$(filter_type))
+
+ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
+LDSCRIPT = INPUT (
+else
+LDSCRIPT = GROUP (
+endif
+
+LDSCRIPT += $(CORE_LIBS)
+
+ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
+LDSCRIPT += AS_NEEDED (
+endif
+
+# For shared libs we do not care if we link against PMDs here,
+# they will be ignored (ie. after AS_NEEDED) as there are no direct
+# references to them
+LDSCRIPT += $(LIBS)
+
+ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y)
+LDSCRIPT += )
+endif
+
+LDSCRIPT += )
+
+all: FORCE
+ $(Q)echo "$(LDSCRIPT)" > $(RTE_OUTPUT)/lib/$(COMBINEDLIB)
+
+#
+# Clean all generated files
+#
+.PHONY: clean
+clean:
+ $(Q)rm -f $(RTE_OUTPUT)/lib/$(COMBINEDLIB)
+
+.PHONY: FORCE
+FORCE:
@@ -93,6 +93,9 @@ $(ROOTDIRS-y):
@[ -d $(BUILDDIR)/$@ ] || mkdir -p $(BUILDDIR)/$@
@echo "== Build $@"
$(Q)$(MAKE) S=$@ -f $(RTE_SRCDIR)/$@/Makefile -C $(BUILDDIR)/$@ all
+ @if [ $@ = lib ]; then \
+ $(MAKE) -f $(RTE_SDK)/mk/rte.combinedlib.mk; \
+ fi
%_clean:
@echo "== Clean $*"