Fix a Typo Which Causes It Unable to Compile with Old Glibc

[PeronGH]

I encoutered this error when compiling llama.cpp.

ggml.c: In function 'ggml_numa_init':
ggml.c:2088:26: error: 'SYS_getcpu' undeclared (first use in this function); did you mean 'SYS_get_cpu'?
 2088 |     getcpu_ret = syscall(SYS_getcpu,&current_cpu,&g_state.numa.current_node);
      |                          ^~~~~~~~~~
      |                          SYS_get_cpu
ggml.c:2088:26: note: each undeclared identifier is reported only once for each function it appears in

I followed the comiler suggestions to fix the typo and then successfully compiled it.

[cebtenzzre]

But this isn't a typo - there is no SYS_get_cpu on my system (Arch Linux with up-to-date Linux and glibc), only SYS_getcpu. Perhaps SYS_get_cpu was a typo in the headers that was later fixed?

See the discussion at #5557

[PeronGH]

Maybe this is specific to the old version of glibc? Here is more info about my system:

$ uname -a
Linux xxx 3.10.0-1160.105.1.el7.x86_64 #1 SMP Mon Nov 6 06:58:51 EST 2023 x86_64 x86_64 x86_64 GNU/Linux

$ gcc --version
gcc (conda-forge gcc 13.2.0-5) 13.2.0
...

$ ldd --version
ldd (GNU libc) 2.17
...

And SYS_get_cpu works for me, but SYS_getcpu doesn't.

[ggerganov]

Maybe ifdef it specifically for that version of glibc

[petterreinholdtsen]

See ggml-org/whisper.cpp#1897 for a proposed solution handling both SYS_ names.

[bobqianic]

I've searched through various versions of Linux but couldn't locate any reference to SYS_get_cpu. It seems only SYS_getcpu is available.

https://elixir.bootlin.com/linux/latest/A/ident

And SYS_get_cpu works for me, but SYS_getcpu doesn't.

This is strange.