--- Makefile.orig	2022-10-06 20:04:46 UTC
+++ Makefile
@@ -1,10 +1,10 @@
-AR = ar
-CC = cgcc
-GCC = gcc
-CFLAGS = -W -Wall -O2 -I include -g -pthread -D_DEFAULT_SOURCE
-LDFLAGS = -lm -lpthread
+AR ?= ar
+CC ?= cgcc
+GCC ?= gcc
+CFLAGS += -W -Wall -I include -pthread -D_DEFAULT_SOURCE
+LDFLAGS += -lm -lpthread
 INSTALL = install
-PREFIX = /usr/local
+PREFIX ?= /usr/local
 
 TEST_LINK_FLAG = -Wl,-rpath,.
 
@@ -177,10 +177,13 @@ unix-support.o:	unix-support.c include/zakalwe/unix-su
 unix-support.lo:	unix-support.c include/zakalwe/unix-support.h $(GENERAL_DEPS)
 unix-support.o:	unix-support.c include/zakalwe/unix-support.h $(GENERAL_DEPS)
 
-install:	all
-	$(INSTALL) -m 644 libzakalwe.so "$(PREFIX)/lib"/
-	mkdir -p -m 755 "$(PREFIX)/include/zakalwe"
-	$(INSTALL) -m 644 include/zakalwe/*.h "$(PREFIX)/include/zakalwe"/
+strip:
+	strip libzakalwe.so
+
+install:	strip all
+	$(INSTALL) -m 644 libzakalwe.so "$(DESTDIR)$(PREFIX)/lib"/
+	mkdir -p -m 755 "$(DESTDIR)$(PREFIX)/include/zakalwe"
+	$(INSTALL) -m 644 include/zakalwe/*.h "$(DESTDIR)$(PREFIX)/include/zakalwe"/
 
 clean:	
 	rm -f $(Z_TEST_BIN) *.o *.lo *.so