OpenWrt 25.12 toolchain building issues with fortify

[Hauke Mehrtens]

On 2/21/26 08:04, Jonas Lochmann wrote:
> Am Mon, Feb 09, 2026 at 12:35:42AM +0100, schrieb Hauke Mehrtens:
>> Hi,
>>
>> I plan to tag OpenWrt 25.12.0-rc5 next weekend and then the final version
>> about 1 week later.
>>
>> Between rc5 and the final version only small changes should get in to reduce
>> the risk of adding new regressions.
> 
> I see a big issue right now regarding the toolchain. I cannot build it
> with the default level for fortify source. Level 1 was already the
> default in rc1 and there it worked. However, in rc5, building the
> toolchain fails. This is well hidden by the fact that the toolchain is
> not rebuilt automatically in most cases, including the adjustment of the
> fortify parameter. So after disabling fortify, I needed to do another
> dirclean to actually get it working. The same effect can hide this
> problem.

Hi,

Please create an issue with the problem.

You just provided some very wage, like something does not work.

fortify-headers does not automatically rebuilds when something changes, 
maybe you have to manually rebuild it like this:
make toolchain/fortify-headers/{clean,compile}

Hauke