#15316: Make gf2x respect SAGE_FAT_BINARY and use --libdir
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Reporter: jpflori | Owner:
Type: defect | Status: needs_work
Priority: critical | Milestone: sage-6.3
Component: packages: | Resolution:
standard | Merged in:
Keywords: spkg gf2x | Reviewers: Jeroen Demeyer
Authors: Jean-Pierre | Work issues:
Flori, Erik Massop | Commit:
Report Upstream: N/A | 3ca3e7b9386475ccefea3f9f9c6c0a29c141190d
Branch: | Stopgaps:
u/emassop/ticket/15316 |
Dependencies: |
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Changes (by emassop):
* status: needs_review => needs_work
Comment:
With --enable-hardware-specific-code (the default), it depends on whether
code with sse2/pclmul can be '''compiled and executed'''.
||=cpu =||=execute sse2 =||=execute pclmul =||=dir =||
||x86_64 ||yes ||yes ||x86_64_pclmul ||
||x86_64 ||no ||yes ||x86_64_pclmul ||
||x86_64 ||yes ||no ||x86_64 ||
||x86_64 ||no ||no ||generic64 ||
With --disable-hardware-specific-code: generic64.
Hmm, according to the discussion above that latter should be x86_64
instead of generic64, right? I'll fiddle with this some more.
I'm thinking of having the options --enable-sse2 and --enable-pclmul with
values "no"/"hostcpu"/"native"/"yes", with as default the value of
--enable-hardware-specific-code which would itself defaults to "native".
Value "hostcpu" would enable minimally for this $host_cpu (for x86_64 this
would be sse2 yes and pclmul no). Value "native" would try to compile and
execute. Having calculated the final values for --enable-sse2 and
--enable-pclmul, sse2 and pclmul would be enabled based on these values.
Configure would error out if the compiler lacks support.
The default directory would be selected based on $host_cpu and whether
sse2 and pclmul are enabled. When the directory is forced, insufficient
sse2/pclmul might be enabled and configure would error out.
--
Ticket URL: <http://trac.sagemath.org/ticket/15316#comment:62>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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