t-xtensa

linux下的gcc编译器

# Use GCC's floating-point emulation code
LIB2FUNCS_EXTRA = fp-bit.c dp-bit.c

dp-bit.c: $(srcdir)/config/fp-bit.c
	cat $(srcdir)/config/fp-bit.c > dp-bit.c

fp-bit.c: $(srcdir)/config/fp-bit.c
	echo '#define FLOAT' > fp-bit.c
	cat $(srcdir)/config/fp-bit.c >> fp-bit.c

########################################################################

# Don't run fixproto
STMP_FIXPROTO =

# Build crtbegin and crtend with the "longcalls" option
CRTSTUFF_T_CFLAGS += -mlongcalls
CRTSTUFF_T_CFLAGS_S += -mlongcalls

LIB1ASMSRC = xtensa/lib1funcs.asm
LIB1ASMFUNCS = _mulsi3 _nsau _divsi3 _modsi3 _udivsi3 _umodsi3

TARGET_LIBGCC2_CFLAGS += -mlongcalls

LIB2FUNCS_EXTRA += $(srcdir)/config/xtensa/lib2funcs.S

$(out_object_file): gt-xtensa.h
gt-xtensa.h : s-gtype ; @true