--- lib/Makefile.am
+++ lib/Makefile.am
@@ -20,6 +20,7 @@
 include gnulib.mk
 
 AM_CFLAGS = $(WARNING_CFLAGS) $(WERROR_CFLAGS)
+AM_CFLAGS += -fpie
 
 noinst_PROGRAMS = t-fpending
 LDADD = $(noinst_LIBRARIES)
--- src/Makefile.am
+++ src/Makefile.am
@@ -105,6 +105,8 @@
 
 su_SOURCES = su.c getdef.c
 su_LDADD = $(LDADD) $(LIB_CRYPT) -lpam -lpam_misc -ldl
+su_CFLAGS = -fpie
+su_LDFLAGS = -pie
 
 dir_LDADD += $(LIB_ACL)
 ls_LDADD += $(LIB_ACL)