#7864: libfplll tries to link 64-bit objects to 32-bit libstdc++.so
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Reporter: drkirkby | Owner: drkirkby
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.5
Component: solaris | Keywords:
Author: David Kirkby | Upstream: Reported upstream. Little or no
feedback.
Reviewer: | Merged:
Work_issues: |
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Comment(by drkirkby):
Replying to [comment:13 wjp]:
> It looks like this list of library search directories is generated by
the configure-script by running {{{$(CC) -print-search-dirs}}} and then
parsing the output. (When using gcc; I haven't looked at the other cases
in the configure script.)
>
> This seems to strongly suggest that the way of selecting 32/64 bit
builds using autoconf+libtool is to set CC (and consequently CXX. Maybe LD
too?) to "gcc -m32" or "gcc -m64" (by using {{{CC="${CC:-gcc} -m64"}}} or
similar where necessary?), instead of adding those options to
CFLAGS/CXXFLAGS.
>
> It would be nice to find confirmation of this in the autotools or
libtool documentation somewhere. I found a brief reference here, but
that's hardly authorative:
>
> http://www.mail-archive.com/[email protected]/msg16326.html
I'm a member of the autoconf mailing list and I think possibly the libtool
mailing list too. I will post and ask there.
I know one has to set CC with Python, but many packages don't need that.
There are loads of packages in Sage building with only CFLAGS set, and not
CC.
Dave
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7864#comment:14>
Sage <http://www.sagemath.org>
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