error when building gcc using buildroot/toolchain

[liran tal]

Thanks Hamish.
I'm actually working with Bernhard's repo but this is a useful patch.


Regards,
Liran.

On Nov 2, 2007 1:31 AM, Hamish Moffatt <hamish at cloud.net.au> wrote:
>
> On Thu, Nov 01, 2007 at 09:42:27AM +0200, liran tal wrote:
> > Hey Bernhard,
> >
> > I will update you as well as the mailing list on issues I stumble while
> > working with your git repository.
> >
> > When working with gcc-4.1.2, the compilation breaks with an error of a
> > missing file
> > 'execinfo.h' which is referenced from
> > toolchain_build_mipsel/gcc-4.1.2/libmudflap/mf-runtime.c
> > (that's on my mipsel build). By commenting out line 56 for including execinfo.h
> > the rest of the compilation process continues ok.
>
> This is fixed in buildroot's svn. The problem is that the libmudflap
> configure uses the host's cpp rather than the target, which then finds
> the host's execinfo.h at configure time, which doesn't exist at compile
> time when the correct tools are used.
>
> Here's the patch I supplied.
>
> Hamish
>
> Index: gcc-uclibc-3.x.mk
> ===================================================================
> --- gcc-uclibc-3.x.mk   (revision 20217)
> +++ gcc-uclibc-3.x.mk   (working copy)
> @@ -242,6 +242,7 @@
>         (cd $(GCC_BUILD_DIR2); rm -rf config.cache; \
>                 $(HOST_CONFIGURE_OPTS) \
>                 GCC=$(TARGET_CROSS)gcc \
> +               CPP=$(TARGET_CROSS)cpp \
>                 LDFLAGS_FOR_TARGET="$(patsubst %,LDFLAGS+=-Wl$(comma)%,$(TARGET_LDFLAGS)) -L$(STAGING_DIR)/lib -L$(STAGING_DIR)/usr/lib" \
>                 $(GCC_DIR)/configure \
>                 --prefix=$(STAGING_DIR) \
> @@ -267,7 +268,7 @@
>         touch $@
>
>  $(GCC_BUILD_DIR2)/.compiled: $(GCC_BUILD_DIR2)/.configured
> -       PATH=$(TARGET_PATH) $(MAKE) $(HOST_CONFIGURE_OPTS) -C $(GCC_BUILD_DIR2) all
> +       PATH=$(TARGET_PATH) $(MAKE) $(HOST_CONFIGURE_OPTS) CPP=$(TARGET_CROSS)cpp -C $(GCC_BUILD_DIR2) all
>         touch $@
>
>  $(GCC_BUILD_DIR2)/.installed: $(GCC_BUILD_DIR2)/.compiled
> --
> Hamish Moffatt VK3SB <hamish at debian.org> <hamish at cloud.net.au>
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