I used to have the exact same problem (with libtinfo*) back when Sage
shipped ncurses 5 (to which libtinfo* belong). My workaround was to move
libtinfo* out of the way : Sage the used the systemwide libtinfo*.
A recent upgrade to the Sage-shipped ncurses (which is now version 6) fixed
this.
IMHO, these libraries would be a nice target to an attempt (in the
configure file) for testing a possible systemwide library, then do NOT
install the Sage-shipped version if the systemwide version is sufficient. I
have been told that this already happens for some Sage-shipped packages,
but I'm unable to quote them
I'd like to propose a patch (at least for libreadline and ncurses), but I
miss a couple of informations :
- How to tell "configure" not to install the Sage-shipped version ? I
think I am able to look at the configuration of the Sage-shipped packages
for which this happens in order to understand what is done and clone/adapt
the process. What are they ?
- What features are necessary in {libtinfo|libreadline|wwhatever} for
Sage to run correcly (i. e. what should "configure" test) ?
Ideas ?
--
Emmanuel Charpentier
Le mercredi 30 août 2017 19:14:06 UTC+2, Richard_L a écrit :
>
> As I observed on the sage-release Sage.8.1.beta3 thread, a library
> conflict causes 'make ptestlong' to fail under openSUSE LEAP 42.2.
> Reworking the offending symlink in the sage installation to point to the
> system library fixes the problem. The two copies of "libreadline.so.6.3"
> are NOT identical. Running 'nm -D --defined-only' against each file, and
> stripping out the symbol values, I was able to diff the two, revealing
> discrepancies both in symbol types and symbol names. (Log attached.)
>
> Question: Why does sage install shared-object libraries when working
> versions of same are already on the system?
>
> - Richard
>
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