remove the -llto_library option for any osx fortran compiler

Author: martin-frbg

Makefile.system

@@ -442,11 +442,9 @@ CCOMMON_OPT += -Wl,-ld_classic
 FCOMMON_OPT += -Wl,-ld_classic
 endif
 ifeq (x$(XCVER), x 16)
-ifeq ($(F_COMPILER), GFORTRAN)
 override CEXTRALIB := $(filter-out(-lto_library, $(CEXTRALIB))) 
 endif
 endif
-endif
 
 ifneq (,$(findstring $(OSNAME), FreeBSD OpenBSD DragonFly))
 MD5SUM = md5 -r