Bug#954917: Do not rely on autodetection for CPU optimisations (SSE, SSE3, AVX)

[Laurent Bigonville]

tag 954917 + patch
user reproducible-builds at lists.alioth.debian.org
usertag 954917 + cpu
thanks

On Wed, 25 Mar 2020 10:39:36 +0100 Laurent Bigonville <bigon at debian.org> 
wrote:

 > Hello,
 >
 > I see that the configure is autodetecting at buildtime whether several
 > CPU optimisations (SSE, SSE3, AVX) should be enabled or not.
 >
 > I feel this is not OK as building the package on different hardware
 > would result in different binaries being generated.
 >
 > AFAICS, the code is detecting at runtime if the CPU is supporting these
 > features, so I think that it's fine to force enable these 3 on i386 and
 > amd64 and not rely on autodetection in the configure (and force disable
 > them on the other architectures).
 >
 > On x32 port, the package FTBFS due to an issue related to this.

Please find here a patch that fixes all of this

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