[PATCH][PPC32] Fix compilation with binutils-2.15

From: Tom Rini (trini_at_kernel.crashing.org)
Date: 07/31/04

  • Next message: Miklos Szeredi: "Re: uid of user who mounts" 
    Date:	Sat, 31 Jul 2004 12:24:21 -0700
To: Linus Torvalds <torvalds@osdl.org>

    Currently, ppc32 will not always compile with binutils-2.15. The issue
    is that binutils has become even more strict about which opcodes can be
    used with which CPU flags. The problem is that we have a number of
    cases where we compile with altivec instructions (with runtime checks to
    make sure we can actually run them) in code that's not altivec specific.
    The fix for this is to always pass in -maltivec on CONFIG_6xx. To do
    this cleanly, we split our AFLAGS definition up into
    aflags-$(CONFIG_FOO).

    Signed-off-by: Tom Rini <trini@kernel.crashing.org>

    --- 1.57/arch/ppc/Makefile 2004-07-28 21:58:36 -07:00
    +++ edited/arch/ppc/Makefile 2004-07-31 12:16:29 -07:00
    @@ -22,7 +22,7 @@
     
     LDFLAGS_vmlinux := -Ttext $(KERNELLOAD) -Bstatic
     CPPFLAGS += -Iarch/$(ARCH)
    -AFLAGS += -Iarch/$(ARCH)
    +aflags-y += -Iarch/$(ARCH)
     cflags-y += -Iarch/$(ARCH) -msoft-float -pipe \
                     -ffixed-r2 -Wno-uninitialized -mmultiple
     CPP = $(CC) -E $(CFLAGS)
    @@ -33,10 +33,16 @@
     cflags-y += -mstring
     endif
     
    +aflags-$(CONFIG_4xx) += -m405
     cflags-$(CONFIG_4xx) += -Wa,-m405
    +aflags-$(CONFIG_6xx) += -maltivec
    +cflags-$(CONFIG_6xx) += -Wa,-maltivec
    +aflags-$(CONFIG_E500) += -me500
     cflags-$(CONFIG_E500) += -Wa,-me500
    +aflags-$(CONFIG_PPC64BRIDGE) += -mppc64bridge
     cflags-$(CONFIG_PPC64BRIDGE) += -Wa,-mppc64bridge
     
    +AFLAGS += $(aflags-y)
     CFLAGS += $(cflags-y)
     
     head-y := arch/ppc/kernel/head.o 

    -- 
Tom Rini
http://gate.crashing.org/~trini/
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