Added support for the OSU standard cell set for sky130, based on
the existing repository.

sky130/Makefile

diff --git a/sky130/Makefile b/sky130/Makefile
index 13b3052..34226ab 100644
--- a/sky130/Makefile
+++ b/sky130/Makefile
@@ -85,6 +85,9 @@
 # the scratch repo above.
 SKYWATER_PATH = ~/gits/skywater-pdk/libraries
 
+# Path to OSU standard cell library sources
+OSU_PATH = ~/gits/osu_130_pdk
+
 # NOTE:  Install destination is the git repository of the technology platform.
 # Once updated in git, the git project can be distributed to all hosts.
 #
@@ -339,6 +342,15 @@
 		-library digital sky130_fd_sc_ls \
 		-library digital sky130_fd_sc_ms \
 		-library digital sky130_fd_sc_lp |& tee -a ${SKY130A}_install.log
+        # Install OSU digital standard cells.
+	${STAGE} -source ${OSU_PATH} -target ${STAGING_PATH}/${SKY130A} \
+		-techlef char/techfiles/scs8.lef rename sky130_osu_sc.tlef \
+		-spice lib/spice/*.spice compile-only \
+		-lef outputs/s8_osu130.lef rename sky130_osu_sc.lef \
+		-lib outputs/*.lib \
+		-gds lib/gds/*.gds compile-only \
+		-verilog outputs/VERILOG/*.v \
+		-library digital sky130_osu_sc
 	# Install additional model file (efabless)
 	${STAGE} -source ./custom -target ${STAGING_PATH}/${SKY130A} \
 		-ngspice models/*.lib rename ${SKY130A}.lib \

sky130/custom/techLEF/sky130_fd_sc_hs_tech.lef

diff --git a/sky130/custom/techLEF/sky130_fd_sc_hs_tech.lef b/sky130/custom/techLEF/sky130_fd_sc_hs_tech.lef
index 7f8f3af..900e425 100644
--- a/sky130/custom/techLEF/sky130_fd_sc_hs_tech.lef
+++ b/sky130/custom/techLEF/sky130_fd_sc_hs_tech.lef
@@ -10,11 +10,11 @@
 END UNITS
 MANUFACTURINGGRID 0.005 ;
 
-SITE unitehd
+SITE unit
     SYMMETRY Y  ;
     CLASS CORE  ;
-    SIZE  0.460 BY 3.400 ;
-END unitehd
+    SIZE  0.480 BY 3.400 ;
+END unit
 
 ######  Starting overlap layers #####
 # ******** Layer OverlapCheck, type blockage, number 90 **************
@@ -710,3 +710,4 @@
 #   SPACING 1.600000 BY 1.600000 ;
 # END M4M5_PR_C
 
+END LIBRARY