t-ppccomm

linux下的gcc编译器

# Common support for PowerPC ELF targets (both EABI and SVR4).

LIB2FUNCS_EXTRA = tramp.S

# This one can't end up in shared libgcc
LIB2FUNCS_STATIC_EXTRA = eabi.S

# 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
	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

eabi.S: $(srcdir)/config/rs6000/eabi.asm
	cat $(srcdir)/config/rs6000/eabi.asm > eabi.S

tramp.S: $(srcdir)/config/rs6000/tramp.asm
	cat $(srcdir)/config/rs6000/tramp.asm > tramp.S

# Switch synonyms
MULTILIB_MATCHES_FLOAT	= msoft-float=mcpu?401 \
			  msoft-float=mcpu?403 \
			  msoft-float=mcpu?405 \
			  msoft-float=mcpu?ec603e \
			  msoft-float=mcpu?801 \
			  msoft-float=mcpu?821 \
			  msoft-float=mcpu?823 \
			  msoft-float=mcpu?860
MULTILIB_MATCHES_ENDIAN	= mlittle=mlittle-endian mbig=mbig-endian
MULTILIB_MATCHES_SYSV	= mcall-sysv=mcall-sysv-eabi mcall-sysv=mcall-sysv-noeabi mcall-sysv=mcall-linux mcall-sysv=mcall-netbsd

LIBGCC = stmp-multilib
INSTALL_LIBGCC = install-multilib
EXTRA_MULTILIB_PARTS = crtbegin$(objext) crtend$(objext) \
  crtbeginS$(objext) crtendS$(objext) crtbeginT$(objext) \
  ecrti$(objext) ecrtn$(objext) \
  ncrti$(objext) ncrtn$(objext) \
  crtsavres$(objext)

# We build {e,n}crti.o and {e,n}crtn.o, which serve to add begin and
# end labels to all of the special sections used when we link using gcc.

# Assemble startup files.
ecrti.S: $(srcdir)/config/rs6000/eabi-ci.asm
	cat $(srcdir)/config/rs6000/eabi-ci.asm >ecrti.S

ecrtn.S: $(srcdir)/config/rs6000/eabi-cn.asm
	cat $(srcdir)/config/rs6000/eabi-cn.asm >ecrtn.S

ncrti.S: $(srcdir)/config/rs6000/sol-ci.asm
	cat $(srcdir)/config/rs6000/sol-ci.asm >ncrti.S

ncrtn.S: $(srcdir)/config/rs6000/sol-cn.asm
	cat $(srcdir)/config/rs6000/sol-cn.asm >ncrtn.S

crtsavres.S: $(srcdir)/config/rs6000/crtsavres.asm
	cat $(srcdir)/config/rs6000/crtsavres.asm >crtsavres.S

# Build multiple copies of ?crt{i,n}.o, one for each target switch.
$(T)ecrti$(objext): ecrti.S
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -c ecrti.S -o $(T)ecrti$(objext)

$(T)ecrtn$(objext): ecrtn.S
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -c ecrtn.S -o $(T)ecrtn$(objext)

$(T)ncrti$(objext): ncrti.S
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -c ncrti.S -o $(T)ncrti$(objext)

$(T)ncrtn$(objext): ncrtn.S
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -c ncrtn.S -o $(T)ncrtn$(objext)

$(T)crtsavres$(objext): crtsavres.S
	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(INCLUDES) $(MULTILIB_CFLAGS) -c crtsavres.S -o $(T)crtsavres$(objext)

# It is important that crtbegin.o, etc., aren't surprised by stuff in .sdata.
CRTSTUFF_T_CFLAGS = -msdata=none
# Make sure crt*.o are built with -fPIC even if configured with 
# --enable-shared --disable-multilib
CRTSTUFF_T_CFLAGS_S = -fPIC -msdata=none