Thread: XP update?
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Old 09-27-2015, 01:04 PM   #15
eschwartz
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Quote:
Originally Posted by DiapDealer View Post
Almost impossible.
Well not really. You can build Qt5 without SSE2 support easily enough. You just have to sacrifice WebKit in order to do so (which is a calibre deal-breaker).
Are you sure about that?
As I said before -- most distros build on 32-bit without sse2, in order to support those processors without sse2.
Debian and Fedora build twice and ship both set of libs.
Arch only builds with --no-sse2
Gentoo uses USE flags for sse2.

No ArchLinux i686 computers will get sse2-enabled Qt5 from the repos, unless of course the Qt5 compile-time flag "--no-sse2" does not, in fact, guarantee an sse2-free build process. Yet, the distro-provided calibre does not crash as a result (with the sse2 warning). Nor does my source install fail to build or run.
And I have seen explicit discussion on the Gentoo forums where someone who couldn't run calibre, was able to run calibre after re-emerging Qt5 with the appropriate USE flag to disable sse2 (ther cpu didn't support sse2).

Last edited by eschwartz; 09-27-2015 at 01:09 PM.
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