Makefile stub for contrail's packages

This is a makefile that automates building of all the packages in
contrail-packages repo and will be used as single source of truth
for both CI and dev-env. It will also allow building of packages after
merge from contrail-packaging.

Change-Id: I03a70723833621266435483474fbcffcd22f3bda
Partial-Bug: 1752195

Makefile

@@ -0,0 +1,53 @@
+MKFILE_DIR := $(dir $(abspath $(lastword $(MAKEFILE_LIST))))
+SB_TOP := $(MKFILE_DIR:/tools/packages/=)
+
+SPEC_DIR := $(MKFILE_DIR)rpm
+SPEC_FILES := $(wildcard $(SPEC_DIR)/*/*.spec)
+PACKAGES := $(patsubst %.spec,rpm-%,$(notdir $(SPEC_FILES)))
+DEPENDENCIES := $(patsubst %.spec,dep-%,$(notdir $(SPEC_FILES)))
+
+DEBUGINFO := TRUE
+SCONSOPT := production
+SRCVER := $(shell cat $(SB_TOP)/controller/src/base/version.info)
+KVERS := $(shell rpm -q --qf "%{VERSION}-%{RELEASE}.%{ARCH}" kernel-devel)
+BUILDTAG := $(shell date +%m%d%Y%H%M)
+
+RPMBUILD_FLAGS := -bb --define "_sbtop $(SB_TOP)"
+RPMBUILD_FLAGS += --define "_opt $(SCONSOPT)"
+RPMBUILD_FLAGS += --define "_kVers $(KVERS)"
+RPMBUILD_FLAGS += --define "_srcVer $(SRCVER)"
+RPMBUILD_FLAGS += --define "_buildTag $(BUILDTAG)"
+
+SCONSFLAGS := -j$(shell nproc)
+
+export BUILD_ONLY := TRUE
+export SCONSFLAGS := $(SCONSFLAGS)
+
+all: dep rpm
+	@echo $(PACKAGES)
+	@echo $(DEPENDENCIES)
+
+.PHONY: all rpm dep
+
+dep: $(DEPENDENCIES)
+rpm: $(PACKAGES)
+
+dep-%:
+	$(eval SPECFILE = $(filter %/$(patsubst dep-%,%.spec,$@), $(SPEC_FILES)))
+	$(info Installing dependencies for $(SPECFILE)...)
+	@yum-builddep -y $(SPECFILE) >/dev/null
+	$(info DONE)
+
+rpm-%:
+	$(eval SPECFILE = $(filter %/$(patsubst rpm-%,%.spec,$@), $(SPEC_FILES)))
+	@rpmbuild $(RPMBUILD_FLAGS) $(SPECFILE)
+
+list:
+	@echo $(patsubst rpm-%,%,$(PACKAGES))
+
+info:
+	@echo SPEC_FILES=$(SPEC_FILES)
+	@echo SRCVER=$(SRCVER)
+	@echo KVERS=$(KVERS)
+	@echo SCONSOPT=$(SCONSOPT)
+	@echo BUILDTAG=$(BUILDTAG)