diff --git a/lib/Makefile b/lib/Makefile
index 7b8115a5..e694a2f6 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -2,11 +2,12 @@ SUBDIRS := $(wildcard */.)
 SUBDIRSCLEAN=$(addsuffix clean,$(SUBDIRS))
 
 MAKEFLAGS += -j 2
+OPTS = -k
 
 all: $(SUBDIRS)
 
 $(SUBDIRS):
-	$(MAKE) -C $@
+	$(MAKE) $(OPTS) -C $@
 
 clean: 
 	for dir in $(SUBDIRS); do \
diff --git a/lib/freepdk45/Makefile b/lib/freepdk45/Makefile
index 65f6242f..cf883d4c 100644
--- a/lib/freepdk45/Makefile
+++ b/lib/freepdk45/Makefile
@@ -14,7 +14,7 @@ all : $(SPICES)
 # Characterize and perform DRC/LVS
 OPTS = -c
 # Do not characterize or perform DRC/LVS
-OPTS += -n
+#OPTS += -n
 # Verbosity
 OPTS += -v
 %.sp : %.py
diff --git a/lib/scn3me_subm/Makefile b/lib/scn3me_subm/Makefile
index ff66e7f8..1b266e3d 100644
--- a/lib/scn3me_subm/Makefile
+++ b/lib/scn3me_subm/Makefile
@@ -14,7 +14,7 @@ all : $(SPICES)
 # Characterize and perform DRC/LVS
 OPTS = -c 
 # Do not characterize or perform DRC/LVS
-OPTS += -n
+#OPTS += -n
 # Verbosity
 OPTS += -v
 %.sp : %.py