#11520: Build failure on riscv64/musl due to undefined __NR_riscv_hwprobe
-------------------------------------+-------------------------------------
Reporter: Michael | Type: defect
Orlitzky |
Status: new | Priority: normal
Component: avutil | Version: 7.1
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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The build currently fails on riscv/musl because `__NR_riscv_hwprobe` is
undefined in libavutil/riscv/cpu.c,
{{{#!C
#elif HAVE_ASM_HWPROBE_H
#include <asm/hwprobe.h>
#include <sys/syscall.h>
#include <unistd.h>
static int __riscv_hwprobe(struct riscv_hwprobe *pairs, size_t pair_count,
size_t cpu_count, unsigned long *cpus,
unsigned int flags)
{
return syscall(__NR_riscv_hwprobe, pairs, pair_count, cpu_count,
cpus,
flags);
}
#endif
}}}
A similar issue was fixed in OpenSSL by
https://github.com/openssl/openssl/pull/25787
This is probably a combination of musl and the frankenkernels that are
still required for most riscv machines. I'm stuck on 6.1.80, for example.
I was able to hack around it by changing the two tests for
`HAVE_ASM_HWPROBE_H` in that file to include also a check for
`defined(__NR_riscv_hwprobe)`.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11520>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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