mk: allow to build shared libraries

Add mk/rte.shared.mk and mk/rte.extshared.mk in framework to
   allow shared libraries compilation through framework

Signed-off-by: Didier Pallard <didier.pallard@6wind.com>
Acked-by: Ivan Boule <ivan.boule@6wind.com>

diff --git a/mk/rte.extshared.mk b/mk/rte.extshared.mk
new file mode 100644 (file)
index 0000000..0d8abbe
--- /dev/null
+++ b/mk/rte.extshared.mk
@@ -0,0 +1,53 @@
+# BSD LICENSE
+#
+# Copyright 2012-2013 6WIND S.A.
+#
+# 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 6WIND S.A. 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.
+
+MAKEFLAGS += --no-print-directory
+
+# we must create the output dir first and recall the same Makefile
+# from this directory
+ifeq ($(NOT_FIRST_CALL),)
+
+NOT_FIRST_CALL = 1
+export NOT_FIRST_CALL
+
+all:
+       $(Q)mkdir -p $(RTE_OUTPUT)
+       $(Q)$(MAKE) -C $(RTE_OUTPUT) -f $(RTE_EXTMK) \
+               S=$(RTE_SRCDIR) O=$(RTE_OUTPUT) SRCDIR=$(RTE_SRCDIR)
+       @echo $(RTE_OUTPUT)/lib must be added to /etc/ld.so.conf or \
+               LD_LIBRARY_PATH variable to allow binary to link with dynamic library
+
+%::
+       $(Q)mkdir -p $(RTE_OUTPUT)
+       $(Q)$(MAKE) -C $(RTE_OUTPUT) -f $(RTE_EXTMK) $@ \
+               S=$(RTE_SRCDIR) O=$(RTE_OUTPUT) SRCDIR=$(RTE_SRCDIR)
+else
+include $(RTE_SDK)/mk/rte.shared.mk
+endif

diff --git a/mk/rte.shared.mk b/mk/rte.shared.mk
new file mode 100644 (file)
index 0000000..7a3a78f
--- /dev/null
+++ b/mk/rte.shared.mk
@@ -0,0 +1,140 @@
+# BSD LICENSE
+#
+# Copyright 2012-2013 6WIND S.A.
+#
+# 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 6WIND S.A. 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/internal/rte.compile-pre.mk
+include $(RTE_SDK)/mk/internal/rte.install-pre.mk
+include $(RTE_SDK)/mk/internal/rte.clean-pre.mk
+include $(RTE_SDK)/mk/internal/rte.build-pre.mk
+include $(RTE_SDK)/mk/internal/rte.depdirs-pre.mk
+
+# VPATH contains at least SRCDIR
+VPATH += $(SRCDIR)
+
+_BUILD = $(SHARED)
+_INSTALL = $(INSTALL-FILES-y) $(SYMLINK-FILES-y) $(RTE_OUTPUT)/lib/$(SHARED)
+_CLEAN = doclean
+
+# Set fPIC in CFLAGS for .so generation
+CFLAGS += -fPIC
+
+.PHONY: all
+all: install
+
+.PHONY: install
+install: build _postinstall
+
+_postinstall: build
+
+.PHONY: build
+build: _postbuild
+
+exe2cmd = $(strip $(call dotfile,$(patsubst %,%.cmd,$(1))))
+
+ifeq ($(LINK_USING_CC),1)
+comma := ,
+LDLIBS := $(addprefix -Wl$(comma),$(LDLIBS))
+LDFLAGS := $(addprefix -Wl$(comma),$(LDFLAGS))
+EXTRA_LDFLAGS := $(addprefix -Wl$(comma),$(EXTRA_LDFLAGS))
+O_TO_SO = $(CC) $(LDFLAGS) $(LDFLAGS_$(@)) $(EXTRA_LDFLAGS) \
+       -shared -o $@ $(OBJS-y) $(LDLIBS)
+else
+O_TO_SO = $(LD) $(LDFLAGS) $(LDFLAGS_$(@)) $(EXTRA_LDFLAGS) \
+       -shared -o $@ $(OBJS-y) $(LDLIBS)
+endif
+
+O_TO_SO_STR = $(subst ','\'',$(O_TO_SO)) #'# fix syntax highlight
+O_TO_SO_DISP = $(if $(V),"$(O_TO_SO_STR)","  LD $(@)")
+O_TO_SO_CMD = "cmd_$@ = $(O_TO_SO_STR)"
+O_TO_SO_DO = @set -e; \
+       echo $(O_TO_SO_DISP); \
+       $(O_TO_SO) && \
+       echo $(O_TO_SO_CMD) > $(call exe2cmd,$(@))
+
+-include .$(SHARED).cmd
+
+# path where libraries are retrieved
+LDLIBS_PATH := $(subst -Wl$(comma)-L,,$(filter -Wl$(comma)-L%,$(LDLIBS)))
+LDLIBS_PATH += $(subst -L,,$(filter -L%,$(LDLIBS)))
+
+# list of .a files that are linked to this application
+LDLIBS_NAMES := $(patsubst -l%,lib%.a,$(filter -l%,$(LDLIBS)))
+LDLIBS_NAMES += $(patsubst -Wl$(comma)-l%,lib%.a,$(filter -Wl$(comma)-l%,$(LDLIBS)))
+
+# list of found libraries files (useful for deps). If not found, the
+# library is silently ignored and dep won't be checked
+LDLIBS_FILES := $(wildcard $(foreach dir,$(LDLIBS_PATH),\
+       $(addprefix $(dir)/,$(LDLIBS_NAMES))))
+
+#
+# Archive objects in .so file if needed
+#
+$(SHARED): $(OBJS-y) $(LDLIBS_FILES) $(DEP_$(SHARED)) FORCE
+       @[ -d $(dir $@) ] || mkdir -p $(dir $@)
+       $(if $(D),\
+               @echo -n "$< -> $@ " ; \
+               echo -n "file_missing=$(call boolean,$(file_missing)) " ; \
+               echo -n "cmdline_changed=$(call boolean,$(call cmdline_changed,$(O_TO_SO_STR))) " ; \
+               echo -n "depfile_missing=$(call boolean,$(depfile_missing)) " ; \
+               echo "depfile_newer=$(call boolean,$(depfile_newer)) ")
+       $(if $(or \
+               $(file_missing),\
+               $(call cmdline_changed,$(O_TO_SO_STR)),\
+               $(depfile_missing),\
+               $(depfile_newer)),\
+               $(O_TO_SO_DO))
+
+#
+# install lib in $(RTE_OUTPUT)/lib
+#
+$(RTE_OUTPUT)/lib/$(SHARED): $(SHARED)
+       @echo "  INSTALL-SHARED $(SHARED)"
+       @[ -d $(RTE_OUTPUT)/lib ] || mkdir -p $(RTE_OUTPUT)/lib
+       $(Q)cp -f $(SHARED) $(RTE_OUTPUT)/lib
+
+#
+# Clean all generated files
+#
+.PHONY: clean
+clean: _postclean
+
+.PHONY: doclean
+doclean:
+       $(Q)rm -rf $(SHARED) $(OBJS-all) $(DEPS-all) $(DEPSTMP-all) \
+         $(CMDS-all) $(INSTALL-FILES-all)
+       $(Q)rm -f $(_BUILD_TARGETS) $(_INSTALL_TARGETS) $(_CLEAN_TARGETS)
+
+include $(RTE_SDK)/mk/internal/rte.compile-post.mk
+include $(RTE_SDK)/mk/internal/rte.install-post.mk
+include $(RTE_SDK)/mk/internal/rte.clean-post.mk
+include $(RTE_SDK)/mk/internal/rte.build-post.mk
+include $(RTE_SDK)/mk/internal/rte.depdirs-post.mk
+
+.PHONY: FORCE
+FORCE: