[PATCH v1 2/8] arm: Fix "file truncated" linker errors from empty built-in.a in SPL/TPL/VPL builds

[Tom Rini]

On Fri, Nov 28, 2025 at 06:44:12PM +0200, Ilias Apalodimas wrote:
> On Fri, 28 Nov 2025 at 17:31, Tom Rini <trini at konsulko.com> wrote:
> >
> > On Fri, Nov 28, 2025 at 10:11:53AM +0800, Yuslaimi, Alif Zakuan wrote:
> > >
> > >
> > > On 27/11/2025 11:09 pm, Marek Vasut wrote:
> > > > [CAUTION: This email is from outside your organization. Unless you trust
> > > > the sender, do not click on links or open attachments as it may be a
> > > > fraudulent email attempting to steal your information and/or compromise
> > > > your computer.]
> > > >
> > > > On 11/27/25 3:12 AM, Yuslaimi, Alif Zakuan wrote:
> > > >
> > > > Hello everyone,
> > > >
> > > > > I already have the referenced commit in my test branch, and I can
> > > > > confirm that the same compilation error still appears on CycloneV when
> > > > > certain directories produce no SPL objects.
> > > > >
> > > > > The existing fix ensures that built-in.o is always present, but it does
> > > > > not prevent ar from generating empty built-in.a archives, which older
> > > > > ARM 32-bit linkers (such as CycloneV toolchains) reject as “file
> > > > > truncated”.
> > > >
> > > > Which toolchain is this ?
> > > >
> > >
> > > I am using Linaro arm-linux-gnueabihf GCC 7.5.0 to compile our SoC32 devices
> > > - CycloneV and Arria10
> >
> > Ilias, do you recall the solution to this problem from when it came up
> > on IRC a few weeks ago?
> 
> Nop unfortunately not.
> Was this caused by the Kbuild bump? I remember the logic around
> builtin changing significantly.

Yes, and I kinda thought we narrowed it down to something being missing
from the update, since the kernel does support this old of a toolchain
(or at least the 10.x? someone else this on).

-- 
Tom
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