CentOS 4 - Zlib upgrade HowTo

Discussion in 'Tips/Tricks/Mods' started by cryptic, Sep 22, 2006.

  1. cryptic

    cryptic Member

    As there are quite a few people on here with CentOS boxes with an older zlib (1.2.1x), this quick and simple HowTO will show you how to create an rpm to upgrade zlib.

    First, get gcc if you don't have it already:
    'yum install gcc'

    Next, you will need rpm-build:
    'yum install rpm-build'

    Now, grab the source rpm for zlib 1.2.3 from the Fedora 5 repos:
    'wget ftp://chuck.ucs.indiana.edu/pub/array2/linux/fedora/linux/core/5/source/SRPMS/zlib-1.2.3-1.2.1.src.rpm'

    Build the rpm with 'rpmbuild --rebuild zlib-1.2.3-1.2.1.src.rpm'

    Now upgrade with the newly created rpms (zlib and zlib-devel):
    'rpm -Uhv /usr/src/redhat/RPMS/i386/zlib-*1.2.3-1.2.1.i386.rpm'

    # rpm -q zlib
    Last edited: Sep 22, 2006
  2. till

    till Super Moderator Staff Member ISPConfig Developer

    Thanks for the howto. I moved your post to the Tips & Tricks forum :)
  3. edouardj

    edouardj New Member


    wget without option doesn't work... I must use the option: --passive-ftp

    Perhaps it could help somebody...
  4. cryptic

    cryptic Member

    Thanks for the info edouardj, but I still can just "wget $file" without issue.

    This is with GNU wget v1.10.2
  5. edouardj

    edouardj New Member

    GNU wget v 1.10.2 with centos 4.4 Final (uptodate) ...

    but I live in France... Bye
  6. falko

    falko Super Moderator ISPConfig Developer

    This is caused by your firewall. For some people (with another firewall) it works without --passive-ftp, and some others have to use it.
  7. Chizl

    Chizl New Member

    Sorry to bring this topic back up, but while it was asked, I have another question about zlib.

    Does anyone know if zlib 1.1.4 has a limitation of 2GB? The company I'm with handing me this 10year old code and says that zlib may have a 2GB limit.. I've searched all over and the newest version I know has a 4GB depending on how it's compiled. But can't find anything on the older version.
  8. falko

    falko Super Moderator ISPConfig Developer

    I'm not sure, but the problem might as well be caused by using a 32bit system.

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