diff --git a/common.mk b/common.mk
new file mode 100644
index 00000000..7bb5b248
--- /dev/null
+++ b/common.mk
@@ -0,0 +1,48 @@
+# Common defs
+
+MAKE=make
+FRAMEWORK=dnx451
+rc_num := $(shell cat rc-num.txt)
+VERSION=1.0.5-rc$(rc_num)
+CONFIGURATION=Release
+PRJNAME := $(shell basename `pwd -P` .dll)
+PKGFILENAME=$(PRJNAME).$(VERSION).nupkg
+PACKAGE=$(DESTPATH)/$(PKGFILENAME)
+BINARY=bin/$(CONFIG)/$(FRAMEWORK)/$(PRJNAME).dll
+NUGETSOURCE=$(HOME)/Nupkgs/
+ASPNET_ENV=Development
+ASPNET_LOG_LEVEL=Debug
+# nuget package destination, at generationi time
+DESTPATH=.
+
+# OBS SUBDIRS=Yavsc.Server Yavsc.Abstract Yavsc cli
+#
+
+# Git commit hash, in order to not publish some uncrontrolled code in production environment
+#
+
+git_status := $(shell git status -s --porcelain |wc -l)
+
+all: build
+
+rc-num.txt: 
+ifndef rc-num	
+	@echo $(shell cat ../rc-num.txt || echo 1) > $@
+else 
+	@echo 'Got rc num : $(rc_num)'	
+endif
+
+rc-num.txt-check: rc-num.txt
+ifndef rc_num
+	@echo no rc num ... please, run 'make reinit-rc-num.txt' before. 
+else
+	@echo 'Got rc num : $(rc_num)'
+endif
+
+clean-rc-num.txt:
+	rm rc-num.txt	
+
+reinit-rc-num.txt: clean-rc-num.txt rc-num.txt
+
+.PHONY: rc-num.txt-check
+