Bug#1143851: hppa-linux-gnu-gcc does not honor -ffreestanding, generating referencs to memset

On 2026-08-12 3:45 p.m., Michael Tokarev wrote:
>> At the moment, I would say hppa is not compatible with -fwhole-program.  The
>> simplest fix might be to add "_attribute__((used, externally_visible))" to the memcpy
>> declaration in your code.
> 
> And this one helps to finish the build, and it finishes successfully.

Excellent!
>> This what google said about this:
>> [...]
> I see. It's a fun stuff.
> 
> So, for the time being, I'm including this workaround.  For the future, I
> guess something has to be done with the build system to avoid -fwhole-program
> (Cc'ing Helge Deller).

When I get a chance, I will look at making memcpy and millicode calls externally visible.

It would be useful to know what code results in the call to memcpy.  This seems a bug in
gcc's -fwhole-program support.

Avoiding millicode calls is likely tricky as they are used for integer multiplication
and division.

I'm not sure why -mdisable-fpregs option is used.  This will make integer multiplication
slower.  All machines of interest have floating-point hardware.

Dave