This is the mail archive of the
libc-alpha@sourceware.org
mailing list for the glibc project.
Re: [PATCH] Common cpuid wrappers, use SYS_cpuid when available
- From: Andreas Schwab <schwab at suse dot de>
- To: Piotr Henryk Dabrowski <ultr at ultr dot pl>
- Cc: libc-alpha at sourceware dot org
- Date: Wed, 09 Mar 2016 09:16:42 +0100
- Subject: Re: [PATCH] Common cpuid wrappers, use SYS_cpuid when available
- Authentication-results: sourceware.org; auth=none
- References: <20160309022443 dot 3e3530f6 at ultra dot tux-net>
Piotr Henryk Dabrowski <ultr@ultr.pl> writes:
> +# SYS_cpuid syscall
> +libc_cv_sys_cpuid=no
> +{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for x86 kernel with
> SYS_cpuid support" >&5 +$as_echo_n "checking for x86 kernel with SYS_cpuid
> support... " >&6; } +cat confdefs.h - <<_ACEOF >conftest.$ac_ext
> +/* end confdefs.h. */
> +
> + #if (defined(__i386__) || defined(__x86_64__)) && defined(__linux__)
> + #include <sys/syscall.h>
You cannot use the host libc to check for features.
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."