[U-Boot] [PATCH] kbuild: fix SPL link bug when USE_PRIVATE_LIBGCC is "yes"

[Masahiro Yamada]

Hello Stephen,

On Mon, 24 Feb 2014 11:02:25 -0700
Stephen Warren <swarren at wwwdotorg.org> wrote:

> On 02/24/2014 04:44 AM, Masahiro Yamada wrote:
> > Commit 6825a95 (kbuild: use Linux Kernel build scripts)
> > changed the behavior of linkage when USE_PRIAVATE_LIBGCC
> > is defined as "yes".
> > (It dropped arch/arm/lib/eabi_compat.o from the
> > target library.)
> > 
> > Affected boards are all Tegra boards.
> > 
> > This commit gets back the same behavior as before Kbuild series.
> 
> Tested-by: Stephen Warren <swarren at nvidia.com>
> 
> ... although interestingly, at least with the Ubuntu 12.10 ARM
> cross-compiler, the resultant U-Boot works fine with or without this
> patch. I'd have expected it to fail without this patch since it sounds
> like USE_PRIVATE_LIBGCC might not be honored correctly, but perhaps the
> linker cmdline order works out such that the custom libgcc happens to be
> picked up anyway, just not in the way intended.

Thanks for your test.
It's good to know your boards are already working.
(But I am not sure the build will pass with all sorts of cross tools.)

So it turned out it works with or without arch/arm/lib/eabi_compat.c.

I am not a compiler expert. Nor do I know what eabi_compat.o
is needed for.

Anyway, just in case, we'd better to keep the same link behavior
as before Kbuild.


Best Regards
Masahiro Yamada