[U-Boot] [PATCH 1/5] x86: Fix compilation on 64-bit build machines

[Simon Glass]

Hi Graeme,

On Tue, Nov 27, 2012 at 5:38 PM, Simon Glass <sjg at chromium.org> wrote:
> From: Graeme Russ <graeme.russ at gmail.com>
>
> Signed-off-by: Graeme Russ <graeme.russ at gmail.com>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>  Makefile                     |    1 +
>  arch/x86/cpu/config.mk       |    3 ++-
>  examples/standalone/Makefile |    2 +-
>  3 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/Makefile b/Makefile
> index 1a17be9..2ad5cc5 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -35,6 +35,7 @@ VERSION_FILE = $(obj)include/generated/version_autogenerated.h
>
>  HOSTARCH := $(shell uname -m | \
>         sed -e s/i.86/x86/ \
> +           -e s/x86_64/x86/ \
>             -e s/sun4u/sparc64/ \
>             -e s/arm.*/arm/ \
>             -e s/sa110/arm/ \
> diff --git a/arch/x86/cpu/config.mk b/arch/x86/cpu/config.mk
> index c00f867..092de68 100644
> --- a/arch/x86/cpu/config.mk
> +++ b/arch/x86/cpu/config.mk
> @@ -23,7 +23,8 @@
>
>  CROSS_COMPILE ?= i386-linux-
>
> -PLATFORM_CPPFLAGS += -DCONFIG_X86 -D__I386__ -march=i386 -Werror
> +PLATFORM_CPPFLAGS += -DCONFIG_X86 -D__I386__ -march=i386 -Werror -m32
> +PLATFORM_LDFLAGS += -m elf_i386
>
>  # DO NOT MODIFY THE FOLLOWING UNLESS YOU REALLY KNOW WHAT YOU ARE DOING!
>  LDPPFLAGS += -DRESET_SEG_START=0xffff0000
> diff --git a/examples/standalone/Makefile b/examples/standalone/Makefile
> index baaa2fb..7c1ea5c 100644
> --- a/examples/standalone/Makefile
> +++ b/examples/standalone/Makefile
> @@ -98,7 +98,7 @@ $(ELF):
>  $(obj)%:       $(obj)%.o $(LIB)
>                 $(LD) $(LDFLAGS) -g -Ttext $(CONFIG_STANDALONE_LOAD_ADDR) \
>                         -o $@ -e $(SYM_PREFIX)$(notdir $(<:.o=)) $< $(LIB) \
> -                       -L$(gcclibdir) -lgcc
> +                       -L$(USE_PRIVATE_LIBGCC) -lgcc

This forces all archs to use a private libgcc here, right? Is that the
intention? It seems to break some of the powerpc boards with my
eldk-5.2.1 toolchain. I'm not sure of the runes to get U-Boot to
compile with a 64-bit toolchain. I think it might be best to
completely get to the bottom of this rather than applying part of this
patch.

So please can you point me to the x86 compiler you tested with?

>
>  $(SREC):
>  $(obj)%.srec:  $(obj)%
> --
> 1.7.7.3
>

Regards,
Simon