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Re: [Libunwind-devel] mincore is potentially unsafe on kernel's older th
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From: |
Arun Sharma |
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Subject: |
Re: [Libunwind-devel] mincore is potentially unsafe on kernel's older than 2.6.21 |
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Date: |
Tue, 13 Jul 2010 17:56:23 -0700 |
On Tue, Jul 13, 2010 at 5:24 PM, Don Maghrak <address@hidden> wrote:
>
> Is there a way to have configure ensure that mincore is only
> used at linux 2.6.21 or later?
> For now we are undefining HAVE_MINCORE in our builds but that makes
> deployment on multiple systems difficult.
A runtime check is probably too expensive. A compile time check fails
if you compile on a new kernel and deploy on an old kernel.
The attached patch should allow you to turn off HAVE_MINCORE via a
configure time flag.
-Arun
enable-mincore.patch
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