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Subject: bug#15406: buggy library symlink install due to use of ldconfig
Resent-From: Vincent Lefevre <vincent@HIDDEN>
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From: Vincent Lefevre <vincent@HIDDEN>
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I've reported the following bug in the Debian BTS:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=723638
Some MPFR user found the following problem:
https://sympa.inria.fr/sympa/arc/mpfr/2013-09/msg00018.html
which I can reproduce below.
When installing two different versions of MPFR in the same directory,
I get:
[...]
libtool: install: /usr/bin/install -c .libs/libmpfr.so.4.1.2 /home/vlefevre/tmpmpfr/lib/libmpfr.so.4.1.2
libtool: install: (cd /home/vlefevre/tmpmpfr/lib && { ln -s -f libmpfr.so.4.1.2 libmpfr.so.4 || { rm -f libmpfr.so.4 && ln -s libmpfr.so.4.1.2 libmpfr.so.4; }; })
libtool: install: (cd /home/vlefevre/tmpmpfr/lib && { ln -s -f libmpfr.so.4.1.2 libmpfr.so || { rm -f libmpfr.so && ln -s libmpfr.so.4.1.2 libmpfr.so; }; })
[...]
for the first one (MPFR 3.1.2), and:
[...]
libtool: install: /usr/bin/install -c .libs/libmpfr.so.4.1.0 /home/vlefevre/tmpmpfr/lib/libmpfr.so.4.1.0
libtool: install: (cd /home/vlefevre/tmpmpfr/lib && { ln -s -f libmpfr.so.4.1.0 libmpfr.so.4 || { rm -f libmpfr.so.4 && ln -s libmpfr.so.4.1.0 libmpfr.so.4; }; })
libtool: install: (cd /home/vlefevre/tmpmpfr/lib && { ln -s -f libmpfr.so.4.1.0 libmpfr.so || { rm -f libmpfr.so && ln -s libmpfr.so.4.1.0 libmpfr.so; }; })
[...]
for the second one (MPFR trunk r8680), which yields:
lrwxrwxrwx 1 16 2013-09-18 12:42:10 libmpfr.so -> libmpfr.so.4.1.0
lrwxrwxrwx 1 16 2013-09-18 12:42:10 libmpfr.so.4 -> libmpfr.so.4.1.2
-rwxr-xr-x 1 1913565 2013-09-18 12:42:10 libmpfr.so.4.1.0
-rwxr-xr-x 1 1821786 2013-09-18 12:41:21 libmpfr.so.4.1.2
libmpfr.so.4 doesn't have the correct target!
After looking at strace output, the change of libmpfr.so.4 to point
back to libmpfr.so.4.1.2 is done by ldconfig after the installation
of the symlinks:
libtool: finish: PATH="/home/vlefevre/eftests/bin:/home/vlefevre/bin:/home/vlefevre/x86_64/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin:/usr/games:.:/sbin" ldconfig -n /home/vlefevre/tmpmpfr/lib
This is probably not what the user expects and leads to confusion.
Either ldconfig should no longer be executed or the "make install"
should fail with a clear error message if the installed library is
not the "most recent" one.
("most recent" is the term used by ldconfig, but in practice, the
highest-version library may not be the most recent due to development
versions, which may not have accurate versioning information yet.)
--
Vincent Lefèvre <vincent@HIDDEN> - Web: <http://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.503 (Entity 5.503) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: Vincent Lefevre <vincent@HIDDEN> Subject: bug#15406: Acknowledgement (buggy library symlink install due to use of ldconfig) Message-ID: <handler.15406.B.137950372827851.ack <at> debbugs.gnu.org> References: <20130918112818.GN21134@HIDDEN> X-Gnu-PR-Message: ack 15406 X-Gnu-PR-Package: libtool Reply-To: 15406 <at> debbugs.gnu.org Date: Wed, 18 Sep 2013 11:29:02 +0000 Thank you for filing a new bug report with debbugs.gnu.org. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): bug-libtool@HIDDEN If you wish to submit further information on this problem, please send it to 15406 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 15406: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D15406 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
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