--- zlib-1.2.11/Makefile.in.orig	2017-02-07 17:18:41.818457620 +0100
+++ zlib-1.2.11/Makefile.in	2017-02-07 17:18:45.590457501 +0100
@@ -18,7 +18,7 @@
 
 CC=cc
 
-CFLAGS=-O
+CFLAGS=-O -fPIC
 #CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
 #CFLAGS=-g -DZLIB_DEBUG
 #CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
@@ -336,7 +336,7 @@
 install: install-libs
 	-@if [ ! -d $(DESTDIR)$(includedir)   ]; then mkdir -p $(DESTDIR)$(includedir); fi
 	rm -f $(DESTDIR)$(includedir)/zlib.h $(DESTDIR)$(includedir)/zconf.h
-	cp $(SRCDIR)zlib.h zconf.h $(DESTDIR)$(includedir)
+	cp $(SRCDIR)zlib.h zconf.h zutil.h $(DESTDIR)$(includedir)
 	chmod 644 $(DESTDIR)$(includedir)/zlib.h $(DESTDIR)$(includedir)/zconf.h
 
 uninstall: