[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [PATCH 1/3] autoconf: prefer an unrolled loop for trivial AC_CHECK_F

From: Eric Blake
Subject: Re: [PATCH 1/3] autoconf: prefer an unrolled loop for trivial AC_CHECK_FUNCS
Date: Mon, 31 Oct 2016 10:26:56 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0

On 10/31/2016 06:39 AM, Paolo Bonzini wrote:
> An unrolled loop avoids the cost of spawning sed in AS_TR_SH and
> AS_TR_CPP.  Prefer it if there is nothing in the second and third
> argument of AC_CHECK_FUNCS and the first argument is a literal.
> Modify AC_CHECK_FUNCS_ONCE to avoid the variable indirection too.
> * lib/autoconf/functions.m4 (AC_CHECK_FUNCS): Unroll loop if safe.
> (_AC_CHECK_FUNCS): Move basic implementation here.
> (_AC_FUNCS_EXPANSION): ... and not here, so remove.
> Signed-off-by: Paolo Bonzini <address@hidden>
> ---
>  lib/autoconf/functions.m4 | 25 +++++++++++--------------
>  1 file changed, 11 insertions(+), 14 deletions(-)


Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library

Attachment: signature.asc
Description: OpenPGP digital signature

reply via email to

[Prev in Thread] Current Thread [Next in Thread]