Gentoo Archives: gentoo-devhelp

From: Thomas Kahle <tom111@×××.de>
To: gentoo-devhelp@l.g.o
Subject: Re: [gentoo-devhelp] autotools and as-needed
Date: Fri, 21 Aug 2009 07:50:54
Message-Id: 4A8E514B.2030207@gmx.de
In Reply to: Re: [gentoo-devhelp] autotools and as-needed by Mike Frysinger
1 Mike Frysinger wrote:
2 > On Wednesday 19 August 2009 17:01:27 Thomas Kahle wrote:
3 >> Peter Volkov wrote:
4 >>> В Срд, 12/08/2009 в 00:03 +0200, Thomas Kahle пишет:
5 >>>> the following check in configure.ac fails with --as-needed but works
6 >>>> without it. Any hints what is wrong ? Thanks / Thomas
7 >>> Common reason for failure with --as-needed is the order of libraries. In
8 >>> you previous mail you wrote that with
9 >>>
10 >>> sed "s/\"-lntl\"/\"-lntl\" \"-lgf2x -lntl\"/" -i "${S}/configure.ac"
11 >>>
12 >>> it works but here:
13 >>>> for lib in "" "-lntl" "-lntl -lgf2x"
14 >>> I see different order. Try to change order of -lgf2x and -lntl inside
15 >>> ebuild. Also
16 >> This change of order is actually since I tried what you suggested. I
17 >> find that this check fails just because the compile fails. It has
18 >> nothing to do with configure. So here is my problem stripped down:
19 >>
20 >> $cat ntlcheck.c
21 >> #include <NTL/tools.h>
22 >> int main () { _ntl_GetTime(); }
23 >>
24 >> g++ ntlcheck.c -lntl -lgf2x
25 >> works
26 >
27 > this is a bug in libntl.so. it uses gf2x symbols but doesnt link against it
28 > in libntl.so. you shouldnt have to also link against libgf2x.so.
29 > -mike
30
31 Thanks => bug #282174
32
33 Thomas
34
35
36 --
37 Thomas Kahle
38
39 The fundamental theorem of algebra is open source. Like any other
40 mathematical theorem it can be applied free of charge and everybody
41 has access to its proof and can convince himself how it works. Why
42 should software be any different?

Attachments

File name MIME type
signature.asc application/pgp-signature

Replies

Subject Author
Re: [gentoo-devhelp] autotools and as-needed Mike Frysinger <vapier@g.o>