t-sr71k

linux下的gcc编译器

CONFIG2_H       = $(srcdir)/config/mips/elf.h $(srcdir)/config/mips/mips.h

# Suppress building libgcc1.a, since the MIPS compiler port is complete
# and does not need anything from libgcc1.a.
LIBGCC1 =
CROSS_LIBGCC1 =

EXTRA_MULTILIB_PARTS = crtbegin.o crtend.o crti.o crtn.o
# Don't let CTOR_LIST end up in sdata section.
CRTSTUFF_T_CFLAGS = -G 0

# Assemble startup files.
$(T)crti.o: $(srcdir)/config/mips/crti.asm $(GCC_PASSES)
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(MULTILIB_CFLAGS) $(INCLUDES) \
	-c -o $(T)crti.o -x assembler-with-cpp $(srcdir)/config/mips/crti.asm

$(T)crtn.o: $(srcdir)/config/mips/crtn.asm $(GCC_PASSES)
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(MULTILIB_CFLAGS) $(INCLUDES) \
	-c -o $(T)crtn.o -x assembler-with-cpp $(srcdir)/config/mips/crtn.asm

# We must build libgcc2.a with -G 0, in case the user wants to link
# without the $gp register.
TARGET_LIBGCC2_CFLAGS = -G 0

# fp-bit and dp-bit are really part of libgcc1, but this will cause
# them to be built correctly, so... [taken from t-sparclite]
# We want fine grained libraries, so use the new code to build the
# floating point emulation libraries.
FPBIT = fp-bit.c
DPBIT = dp-bit.c

dp-bit.c: $(srcdir)/config/fp-bit.c
	echo '#ifdef __MIPSEL__' > dp-bit.c
	echo '#define FLOAT_BIT_ORDER_MISMATCH' >> dp-bit.c
	echo '#endif' >> dp-bit.c
	echo '#define US_SOFTWARE_GOFAST' >> dp-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
	echo '#ifdef __MIPSEL__' >> fp-bit.c
	echo '#define FLOAT_BIT_ORDER_MISMATCH' >> fp-bit.c
	echo '#endif' >> fp-bit.c
	echo '#define US_SOFTWARE_GOFAST' >> fp-bit.c
	cat $(srcdir)/config/fp-bit.c >> fp-bit.c

# Build the libraries for both hard and soft floating point

MULTILIB_OPTIONS = EL/EB msoft-float mips2
MULTILIB_DIRNAMES = el eb soft-float mips2

LIBGCC = stmp-multilib
INSTALL_LIBGCC = install-multilib

# Add additional dependencies to recompile selected modules whenever the
# tm.h file changes.  The files compiled are:
#
#	gcc.c		(*_SPEC changes)
#	toplev.c	(new switches + assembly output changes)
#	sdbout.c	(debug format changes)
#	dbxout.c	(debug format changes)
#	dwarfout.c	(debug format changes)
#	final.c		(assembly output changes)
#	varasm.c	(assembly output changes)
#	cse.c		(cost functions)
#	insn-output.c	(possible ifdef changes in tm.h)
#	regclass.c	(fixed/call used register changes)
#	cccp.c		(new preprocessor macros, -v version #)
#	explow.c	(GO_IF_LEGITIMATE_ADDRESS)
#	recog.c		(GO_IF_LEGITIMATE_ADDRESS)
#	reload.c	(GO_IF_LEGITIMATE_ADDRESS)

gcc.o: $(CONFIG2_H)
toplev.o: $(CONFIG2_H)
sdbout.o: $(CONFIG2_H)
dbxout.o: $(CONFIG2_H)
dwarfout.o: $(CONFIG2_H)
final.o: $(CONFIG2_H)
varasm.o: $(CONFIG2_H)
cse.o: $(CONFIG2_H)
insn-output.o: $(CONFIG2_H)
regclass.o: $(CONFIG2_H)
cccp.o: $(CONFIG2_H)
explow.o: $(CONFIG2_H)
recog.o: $(CONFIG2_H)
reload.o: $(CONFIG2_H)