diff -ruN ntp-4.2.8p3.orig/ntpd/Makefile.in ntp-4.2.8p3/ntpd/Makefile.in
--- ntp-4.2.8p3.orig/ntpd/Makefile.in	2015-06-29 22:24:11.000000000 +0200
+++ ntp-4.2.8p3/ntpd/Makefile.in	2015-07-29 20:26:43.269520417 +0200
@@ -647,7 +647,7 @@
 # longer a reason to have ntpdbase-opts.def split off of ntpd-opts.def.
 LDADD_NTPD_COMMON = $(LDADD_LIBNTP) $(LIBOPTS_LDADD) $(PTHREAD_LIBS) \
 	$(LIBM) $(LDADD_NTP) $(LSCF)
-ntpd_LDADD = $(LDADD) ../libntp/libntp.a $(LDADD_NTPD_COMMON) $(LDADD_LIBUTIL)
+ntpd_LDADD = $(LDADD) ../libntp/libntp.a $(LDADD_NTPD_COMMON) -ffast-math $(LDADD_LIBUTIL)
 ntpdsim_LDADD = $(LDADD) ../libntp/libntpsim.a $(LDADD_NTPD_COMMON)
 ntpdsim_CPPFLAGS = $(AM_CPPFLAGS) -DSIM
 check_y2k_LDADD = $(LDADD) ../libntp/libntp.a $(LDADD_LIBNTP) $(LIBM) $(LDADD_LIBNTP) $(PTHREAD_LIBS)