google3/third_party/grte/v4_src/glibc-2.19/ports/sysdeps/mips/mips64/n64/Makefile - GRTEv4 - Git at Google

 # `long double' is a distinct type we support.
 long-double-fcts = yes

 ifeq ($(filter -mabi=64,$(CC)),)
 CC += -mabi=64
 endif
	# `long double' is a distinct type we support.
	long-double-fcts = yes

	ifeq ($(filter -mabi=64,$(CC)),)
	CC += -mabi=64
	endif