#16105: Stop linking everything to libntl
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Reporter: darij | Owner:
Type: defect | Status: closed
Priority: blocker | Milestone: sage-6.2
Component: build | Resolution: fixed
Keywords: ntl, crash | Merged in:
Authors: Jeroen Demeyer | Reviewers: Volker
Report Upstream: N/A | Braun
Branch: | Work issues:
2770a55d98ddb44edb113207e00c502baf30acb6 | Commit:
Dependencies: | Stopgaps:
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Comment (by fbissey):
I almost feel like I am watching on the side while eating popcorn :) ...
But that will probably create me a bit of work in sage-on-gentoo by
breaking patches :P
So I will take a serious look at this because I don't want to clean as
little as possible. Jeroen, is there a reason why you are inconsistent in
removing stdc++ in extension that are marked "language = c++". I am
presuming that stdc++ is always brought in by the c++ compiler. So, in the
patch I would expect it to be removed from:
* sage.algebras.quatalg.quaternion_algebra_element
* sage.algebras.quatalg.quaternion_algebra_cython
* sage.numerical.backends.glpk_graph_backend
Now I will try to work through the libs on my sage-on-gentoo install which
is all compiled with --as-needed and see if you got the minimal set of
library. I already have an answer for the top one in your patch, gmpxx is
not needed:
{{{
ldd -r /usr/lib64/python2.7/site-
packages/sage/algebras/quatalg/quaternion_algebra_element.so
linux-vdso.so.1 (0x00007fffe372b000)
libcsage.so => /usr/lib64/libcsage.so (0x00007f6d4cb06000)
libflint.so.2.4.3 => /usr/lib64/libflint.so.2.4.3
(0x00007f6d4c778000)
libgmp.so.10 => /usr/lib64/libgmp.so.10 (0x00007f6d4c507000)
libstdc++.so.6 => /usr/lib/gcc/x86_64-pc-linux-
gnu/4.8.2/libstdc++.so.6 (0x00007f6d4c1ff000)
libpython2.7.so.1.0 => /usr/lib64/libpython2.7.so.1.0
(0x00007f6d4be4e000)
libc.so.6 => /lib64/libc.so.6 (0x00007f6d4baa0000)
libntl-6.1.0.so => /usr/lib64/libntl-6.1.0.so (0x00007f6d4b6fe000)
libpari-gmp.so.3 => /usr/lib64/libpari-gmp.so.3
(0x00007f6d4b0bd000)
libgcc_s.so.1 => /usr/lib/gcc/x86_64-pc-linux-
gnu/4.8.2/libgcc_s.so.1 (0x00007f6d4aea5000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f6d4ac88000)
libmpfr.so.4 => /usr/lib64/libmpfr.so.4 (0x00007f6d4aa2d000)
libm.so.6 => /lib64/libm.so.6 (0x00007f6d4a730000)
/lib64/ld-linux-x86-64.so.2 (0x00007f6d4cf88000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007f6d4a52c000)
libutil.so.1 => /lib64/libutil.so.1 (0x00007f6d4a329000)
libgf2x.so.1 => /usr/lib64/libgf2x.so.1 (0x00007f6d4a113000)
}}}
And readelf is even more minimalist:
{{{
readelf -d /usr/lib64/python2.7/site-
packages/sage/algebras/quatalg/quaternion_algebra_element.so
Dynamic section at offset 0x26c90 contains 30 entries:
Tag Type Name/Value
0x0000000000000001 (NEEDED) Shared library: [libcsage.so]
0x0000000000000001 (NEEDED) Shared library:
[libflint.so.2.4.3]
0x0000000000000001 (NEEDED) Shared library: [libgmp.so.10]
0x0000000000000001 (NEEDED) Shared library: [libstdc++.so.6]
0x0000000000000001 (NEEDED) Shared library:
[libpython2.7.so.1.0]
0x0000000000000001 (NEEDED) Shared library: [libc.so.6]
0x000000000000000c (INIT) 0x5938
}}}
libpari probably comes through libcsage, all the rest, indirect linking...
--
Ticket URL: <http://trac.sagemath.org/ticket/16105#comment:37>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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