[Techtalk] glibc upgrade?

iriXx dev_null at iriXx.org
Thu Dec 18 05:40:28 EST 2003

just to add...  upgrading glibc by hand is not for the fainthearted - or 
even the very strong hearted....
i've lost count of the times i've killed X by trying to do that....


John Clarke wrote:

>On Wed, Dec 17, 2003 at 07:12:36 +0000, johnston at pat.biochem.ucl.ac.uk wrote:
>>I'm trying to install something in RedHat8 that requires libxml2 and
>>libxslt.  I've got .rpms of these, but libxml2 apparently requires
>>libpthread.so which is  apparently in glibc2.3.2. Does this mean I have
>>to upgrade the whole of glibc? 
>You shouldn't need to upgrade glibc, but you might need to install an
>additional rpm.  The RH8 glibc rpm does include libpthread:
>    [johnc at dropbear ~/tmp]$ rpm -qpl glibc-2.2.93-5.i386.rpm|grep libpthread
>    /lib/libpthread-0.10.so
>    /lib/libpthread.so.0
>libpthread-0.10.so is the library that you need to run programs which
>were linked with libpthread.  libpthread.so.0 is just a symbolic link
>to libpthread-0.10.so.
>If all you want to do is run programs which were built elsewhere, this
>is all you need.
>To build a program which needs libpthread, you also need a file called
>libpthread.so, which is simply a symbolic link to libpthread.so.0 [1]. 
>This file is part of the glibc-devel package:
>    [johnc at dropbear ~/tmp]$ rpm -qpl glibc-devel-2.2.93-5.i386.rpm |grep libpthread
>    /usr/lib/libpthread.a
>    /usr/lib/libpthread.so
>So, try installing the glibc-devel rpm and see if that solves your
>[1] These symbolic links make it easy to install multiple versions of
>    libraries without breaking programs which rely on a specific
>    version, e.g.:
>    [johnc at dropbear ~/tmp]$ ls -l `locate libncurses.so`
>    lrwxrwxrwx    1 root     root           15 Nov 29 17:22 /usr/lib/libncurses.so -> libncurses.so.5
>    lrwxrwxrwx    1 root     root           17 Dec 14 09:12 /usr/lib/libncurses.so.4 -> libncurses.so.4.0
>    -rwxr-xr-x    1 root     root       256184 Jan 30  2002 /usr/lib/libncurses.so.4.0
>    lrwxrwxrwx    1 root     root           17 Nov 29 17:20 /usr/lib/libncurses.so.5 -> libncurses.so.5.2
>    -rwxr-xr-x    1 root     root       290511 Apr  9  2002 /usr/lib/libncurses.so.5.2
>    libncurses.so links to the latest version (v5.x), libncurses.so.5
>    links to the latest v5 release (v5.2) and libncurses.so.4 links to
>    the latest v4 release (v4.0).  I have some programs which need
>    libncurses v4 and some which need v5.  All will run without me
>    needing to do anything special as long as the libraries are
>    installed and the symbolic links point to the right files.


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