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# Copyright 2013-2014 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.

SOLIB = librte_pmd_virtio.so
DOC = dpdk-virtio-net-pmd.rst

CC = $(CROSS)gcc
override CPPFLAGS += -Wall -Wextra -Werror
override CFLAGS   += -fPIC
override LDFLAGS  += -shared

S ?= .
O ?= .

prefix ?= /usr/local
exec_prefix ?= $(prefix)
libdir ?= $(exec_prefix)/lib
datarootdir ?= $(prefix)/share
docdir ?= $(datarootdir)/doc/dpdk

all : $O/$(SOLIB)

$O :
	mkdir -p $@

$O/$(SOLIB) : $S/virtio_user.c | $O
ifeq '$(RTE_INCLUDE)' ''
	@ echo 'ERROR: RTE_INCLUDE is not set' && false
endif
	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) \
		-I$(RTE_INCLUDE) -include $(RTE_INCLUDE)/rte_config.h \
		-o $@ $<

install : $(DESTDIR)$(libdir)/$(SOLIB)
$(DESTDIR)$(libdir)/$(SOLIB) : $O/$(SOLIB)
	install -D -m 644 $< $@

install : $(DESTDIR)$(docdir)/$(DOC)
$(DESTDIR)$(docdir)/$(DOC) : $S/README.rst
	install -D -m 644 $< $@

clean :
	- rm -f $O/$(SOLIB)
ifneq '$(abspath $O)' '$(CURDIR)'
	- rmdir -p $O 2>&-
endif

uninstall :
	- rm -f $(DESTDIR)$(libdir)/$(SOLIB)
	- rmdir -p $(DESTDIR)$(libdir) 2>&-
	- rm -f $(DESTDIR)$(docdir)/$(DOC)
	- rmdir -p $(DESTDIR)$(docdir) 2>&-

help :
	@ echo 'rules:'
	@ echo '    all (default)'
	@ echo '    clean'
	@ echo '    install'
	@ echo '    uninstall'
	@ echo 'build variables:'
	@ echo '    RTE_INCLUDE (e.g. ../dpdk/build/include),'
	@ echo '    CPPFLAGS, CFLAGS, LDFLAGS,'
	@ echo '    S (source directory), O (build directory)'
	@ echo 'install variables:'
	@ echo '    DESTDIR (optional),'
	@ echo '    prefix, exec_prefix, libdir, datarootdir, docdir'

.PHONY : all clean install uninstall help