Re: /util/cpuinfo-aarch64.c:58:22: error: 'HWCAP_USCAT' undeclared

[Michael Tokarev]

02.09.2023 23:01, Marcin Juszkiewicz wrote:
...
> > The offending code in `/util/cpuinfo-aarch64.c` is:
>  > ```c
>  > #ifdef CONFIG_LINUX
>  >      unsigned long hwcap = qemu_getauxval(AT_HWCAP);
>  >      info |= (hwcap & HWCAP_ATOMICS ? CPUINFO_LSE : 0);
>  >      info |= (hwcap & HWCAP_USCAT ? CPUINFO_LSE2 : 0);
>  >      info |= (hwcap & HWCAP_AES ? CPUINFO_AES: 0);
>  > #endif
>  > ```
> > The reason is that on this distribution the <bits/hwcap.h> header
> > file does not define HWCAP_USCAT:
>
> I would recommend either upgrading your distro or staying at QEMU 8.1
> release.
>
> HWCAP_USCAT was added to glibc in June 2018. As your distribution is not 
> supported anymore you can also patch glibc in your system.
>
> > I don't know if other distributions are also affected, my build
> > platform for all xPack standalone binaries is Ubuntu 18.04 LTS.
>
> I do not know any supported distribution release without it.

In this very case it's trivial to work-around this by using

#ifndef HWCAP_USCAT
# define HWCAP_USCAT 0
#endif

or just commenting-out this line.

But 18.04 being unsupported is true still.

/mjt