#11575: Update PolyBoRi to release 0.8.0
-------------------------------+--------------------------------------------
Reporter: AlexanderDreyer | Owner: AlexanderDreyer
Type: enhancement | Status: positive_review
Priority: major | Milestone: sage-4.7.3
Component: packages | Keywords:
Work_issues: | Upstream: None of the above - read trac
for reasoning.
Reviewer: Martin Albrecht | Author: Alexander Dreyer
Merged: | Dependencies: #11574, #9138
-------------------------------+--------------------------------------------
Comment(by leif):
Replying to [comment:123 AlexanderDreyer]:
> Replying to [comment:121 leif]:
> > > I think the missing LDFLAGS caused your problems.
> > Alternatively, see above.
> Are you sure? Does your setup really work without invoking {{{make}}}?
Since (I now remember that) `g++` ''always'' adds `-lgcc_s` (also `gcc`
when called with `-x c++`), even
{{{
$ echo "int main(void){return 0;}" > foo.c
$ g++ -x c++ foo.c -o foo
}}}
requires `libgcc_s.so` to be found, e.g. by setting `LIBRARY_PATH` (unless
one uses `-static-libgcc`, since that's located in other directories).
(I have to set ''`LD_LIBRARY_PATH`'' anyway, such that the runtime linker
finds `libgmp` etc., which are used by `gcc` and `g++`. But that's not
sufficient to compile an executable like the above as C++. So apparently
!PolyBoRi, or SConstruct, doesn't really invalidate `LD_LIBRARY_PATH` --
otherwise the compiler wouldn't have worked at all -- but `LIBRARY_PATH`,
and with my current settings it doesn't matter whether I put the former or
the latter into SCons's `LIBPATH`, since ''both'' contain the directory
where `libgcc_s` lives. IIRC I first tried adding things to where the
"`getenv`" dictionary is set up, which didn't work, but I don't recall
exactly.)
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11575#comment:128>
Sage <http://www.sagemath.org>
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