Add support for packaging SUSE RPMs.

This patch adds a new spec file for SUSE distribution and modifies the
Makefile to learn which platform is building the RPMs for.

Change-Id: Ic8ee0ddf978042cc1785ebc28bd1a6c9faf9bb74
Signed-off-by: Marco Varlese <marco.varlese@suse.com>

extras/rpm/Makefile

@@ -11,6 +11,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+ifneq ($(shell uname),Darwin)
+OS_ID        = $(shell grep '^ID=' /etc/os-release | cut -f2- -d= | sed -e 's/\"//g')
+OS_VERSION_ID= $(shell grep '^VERSION_ID=' /etc/os-release | cut -f2- -d= | sed -e 's/\"//g')
+endif
 
 TARBALL=$(shell realpath ../../build-root/vpp-latest.tar.xz)
 
@@ -21,6 +25,31 @@ PC=%
 
 all: RPM
 
+ifeq ($(filter opensuse,$(OS_ID)),$(OS_ID))
+srpm:
+	@echo $(TARBALL)
+	mkdir -p rpmbuild/{RPMS,SRPMS,BUILD,SOURCES,SPECS}
+	cp $(TARBALL) rpmbuild/SOURCES/vpp-$(VERSION)-$(RELEASE).tar.xz
+	cp vpp.spec rpmbuild/SOURCES
+	sed -i '1s/^/$(PC)define _version $(VERSION)\n/' rpmbuild/SOURCES/vpp-suse.spec
+	sed -i '1s/^/$(PC)define _release $(RELEASE)\n/' rpmbuild/SOURCES/vpp-suse.spec
+	sed -i '/define _topdir/d' rpmbuild/SOURCES/vpp-suse.spec
+	rpmbuild -bs \
+	  --define "_topdir rpmbuild" \
+	  rpmbuild/SOURCES/vpp-suse.spec
+	mv $$(find rpmbuild/SRPMS -name \*.src.rpm -type f) .
+
+RPM:
+	@echo $(TARBALL)
+	mkdir -p RPMS SOURCES
+	cp $(TARBALL) SOURCES/vpp-$(VERSION)-$(RELEASE).tar.xz
+	rpmbuild -bb \
+	  --define "_topdir $(PWD)" \
+	  --define "_version $(VERSION)" \
+	  --define "_release $(RELEASE)" \
+	  vpp-suse.spec
+	mv $$(find RPMS -name \*.rpm -type f) .
+else
 srpm:
 	@echo $(TARBALL)
 	mkdir -p rpmbuild/{RPMS,SRPMS,BUILD,SOURCES,SPECS}
@@ -44,3 +73,4 @@ RPM:
 	  --define "_release $(RELEASE)" \
 	  vpp.spec
 	mv $$(find RPMS -name \*.rpm -type f) .
+endif