--- a/makefile
+++ b/makefile
@@ -13,7 +13,9 @@ CURSES_CFLAGS := $(shell ncursesw6-config --cflags)
 CURSES_LIBS := $(shell ncursesw6-config --libs)
 
 
-CFLAGS += $(INCS) -Wall $(CURSES_CFLAGS) 
+LIBS += $(CURSES_LIBS)
+FLAGS :=
+CFLAGS += $(FLAGS) $(INCS) -Wall $(CURSES_CFLAGS)
 SRC_CII := cii/src/except.c cii/src/fmt.c cii/src/str.c cii/src/text.c
 
 # Files in library/ that need to be compiled
@@ -31,17 +33,17 @@ SRC_LISP := library/bit.lsp \
 		library/plot.lsp \
 		library/unistd.lsp 
 
-CFLAGS += -O3 -DNDEBUG=1 -Wno-stringop-truncation 
+CFLAGS += -DNDEBUG=1 -Wno-stringop-truncation
 
 ifeq ($(USE_FLTO),1)
-CFLAGS += -O3 -flto -DNDEBUG=1 -Wno-stringop-truncation
+CFLAGS += -flto -DNDEBUG=1 -Wno-stringop-truncation
 endif
 ifeq ($(USE_GDB),1)
 CFLAGS += -O0 -g -DNDEBUG=1 -Wno-stringop-truncation
 endif 
 
 ifeq  ($(shell uname -n),raspberrypi)
-CFLAGS += -O3 -DNDEBUG=1 -Wno-stringop-truncation -Wno-array-bounds
+CFLAGS += -DNDEBUG=1 -Wno-stringop-truncation -Wno-array-bounds
 endif
 
 SRC_CII += cii/src/mem.c