t-arc

gcc-you can use this code to learn something about gcc, and inquire further into linux,

LIB1ASMSRC = arc/lib1funcs.asm
LIB1ASMFUNCS = _mulsi3 _umulsidi3 _udivsi3 _divsi3 _umodsi3 _modsi3 _divmod_tools

# We need libgcc routines to be mangled according to which cpu they
# were compiled for.
# ??? -mmangle-cpu passed by default for now.
#LIBGCC2_CFLAGS = -g1 -O2 $(LIBGCC2_INCLUDES) $(GCC_CFLAGS) -mmangle-cpu

# 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 '#ifndef __big_endian__' > dp-bit.c
	echo '#define FLOAT_BIT_ORDER_MISMATCH' >> dp-bit.c
	echo '#endif' >> 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 '#ifndef __big_endian__' >> fp-bit.c
	echo '#define FLOAT_BIT_ORDER_MISMATCH' >> fp-bit.c
	echo '#endif' >> fp-bit.c
	cat $(srcdir)/config/fp-bit.c >> fp-bit.c

# .init/.fini section routines

crtinit.o: $(srcdir)/config/arc/initfini.c $(GCC_PASSES) $(CONFIG_H)
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(CRTSTUFF_T_CFLAGS) \
	  -DCRT_INIT -finhibit-size-directive -fno-inline-functions \
	  -g0 -c $(srcdir)/config/arc/initfini.c -o crtinit.o

crtfini.o: $(srcdir)/config/arc/initfini.c $(GCC_PASSES) $(CONFIG_H)
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(CRTSTUFF_T_CFLAGS) \
	  -DCRT_FINI -finhibit-size-directive -fno-inline-functions \
	  -g0 -c $(srcdir)/config/arc/initfini.c -o crtfini.o

MULTILIB_OPTIONS = EB
MULTILIB_DIRNAMES = be

# We need our own versions to build multiple copies of crt*.o.
# ??? Use new support in Makefile.

LIBGCC = stmp-multilib-arc
INSTALL_LIBGCC = install-multilib-arc

stmp-multilib-arc: stmp-multilib
	for i in `$(GCC_FOR_TARGET) --print-multi-lib`; do \
	  dir=`echo $$i | sed -e 's/;.*$$//'`; \
	  flags=`echo $$i | sed -e 's/^[^;]*;//' -e 's/@/ -/g'`; \
	  $(MAKE) GCC_FOR_TARGET="$(GCC_FOR_TARGET)" \
	    CC="$(CC)" CFLAGS="$(CFLAGS)" \
	    BUILD_PREFIX="$(BUILD_PREFIX)" BUILD_PREFIX_1="$(BUILD_PREFIX_1)" \
	    GCC_CFLAGS="$(GCC_CFLAGS) $${flags}" \
	    INCLUDES="$(INCLUDES)" CRTSTUFF_T_CFLAGS=$(CRTSTUFF_T_CFLAGS) \
	    dir="$${dir}" crtinit.o crtfini.o; \
	  if [ $$? -eq 0 ] ; then true; else exit 1; fi; \
	done
	touch stmp-multilib-arc

install-multilib-arc: install-multilib
	for i in `$(GCC_FOR_TARGET) --print-multi-lib`; do \
	  dir=`echo $$i | sed -e 's/;.*$$//'`; \
	  rm -f $(DESTDIR)$(libsubdir)/$${dir}/crtinit.o; \
	  $(INSTALL_DATA) $${dir}/crtinit.o $(DESTDIR)$(libsubdir)/$${dir}/crtinit.o; \
	  chmod a-x $(DESTDIR)$(libsubdir)/$${dir}/crtinit.o; \
	  rm -f $(DESTDIR)$(libsubdir)/$${dir}/crtfini.o; \
	  $(INSTALL_DATA) $${dir}/crtfini.o $(DESTDIR)$(libsubdir)/$${dir}/crtfini.o; \
	  chmod a-x $(DESTDIR)$(libsubdir)/$${dir}/crtfini.o; \
	done