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+#---------------------------------------------------
+# Makefile for efabless project open_pdks
+# Tim Edwards, 11/21/2016
+# Updated 10/19/2018 for use independently of the
+# efabless /ef/ tree filesystem setup.
+# Updated 5/5/2020 for use with the 2-stage install
+#---------------------------------------------------
+#
+# Typical usage:
+#
+# make
+# 	generates the tech files from source masters.
+#
+# make install-local
+#
+# 	installs the tech files locally.
+#
+# make install-dist
+#
+# 	installs the tech files in the git project
+# 	that is used for distribution of software
+# 	across the system.
+#
+# make clean
+#
+# 	clean up all files generated by 'make'
+# 
+#---------------------------------------------------
+#
+# The following definitions are tied to the contents
+# of this repository and should not be changed.
+
+TECHS       = sky130
+
+#---------------------------------------------------
+
+all:	${TECHS}
+	for tech in ${TECHS}; do \
+		${MAKE} tech_$$tech; done
+
+#---------------------------------------------------
+
+tech_sky130:
+	(cd sky130 && ${MAKE} all)
+
+#---------------------------------------------------
+
+install-sky130-local:	sky130
+	(cd sky130 && ${MAKE} install-local)
+
+install-sky130-dist:	sky130
+	(cd sky130 && ${MAKE} install-dist)
+
+clean-sky130:
+	(cd sky130 && ${MAKE} clean)
+
+veryclean-sky130:
+	(cd sky130 && ${MAKE} veryclean)
+
+#---------------------------------------------------
+
+install:
+	${MAKE} install-local
+
+install-local:	${TECHS}	
+	for tech in ${TECHS}; do \
+		${MAKE} install-$${tech}-local; done
+
+install-dist:	${TECHS}
+	for tech in ${TECHS}; do \
+		${MAKE} install-$${tech}-dist; done
+
+#---------------------------------------------------
+
+clean:
+	for tech in ${TECHS}; do \
+		${MAKE} clean-$${tech}; done
+
+veryclean:
+	for tech in ${TECHS}; do \
+		${MAKE} veryclean-$${tech}; done