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libavutil/ppc/cpu.c: check that AT_HWCAP2 is defined 

It was not introduced until glibc 2.18.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit d799ad2404)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Sean McGovern 2023-10-14 23:27:24 -04:00 committed by Michael Niedermayer
parent 89745c5354
commit 71843d8174
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1 changed files with 4 additions and 1 deletions
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libavutil/ppc/cpu.c
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@ -95,12 +95,15 @@ int ff_get_cpu_flags_ppc(void)
#endif
if (ret & AV_CPU_FLAG_VSX)
av_assert0(ret & AV_CPU_FLAG_ALTIVEC);
} else if (buf[i] == AT_HWCAP2) {
}
#ifdef AT_HWCAP2 /* not introduced until glibc 2.18 */
else if (buf[i] == AT_HWCAP2) {
#ifdef PPC_FEATURE2_ARCH_2_07
if (buf[i + 1] & PPC_FEATURE2_ARCH_2_07)
ret |= AV_CPU_FLAG_POWER8;
#endif
}
#endif /* AT_HWCAP2 */
}
}