How To Download Zlib For Ubuntu
Rosie Wirsing
Evgeny Legerov discovered that zlib incorrectly handled memory when
performing certain inflate operations. An attacker could use this issue
to cause zlib to crash, resulting in a denial of service, or possibly
execute arbitrary code.
I have (as recommended in the tutorials) installed zlib, zlib1g, and zlib1g-dev. I've even found a few tutorials on this particular problem (all for flavors other than mine, however) but they didn't help.
I am using Ubuntu 10.04 (Lucid), i wanted to install ruby 1.9.2 because 1.9.1 is not recommended with Rails. So I downloaded the source for 1.9.2 and unzipped/unarchived it. my source distro is ruby-1.9.2-p0. After I unpacked it, I built zlib as follows:
That commands seem to fix the problem, then I execute gem update --system and the error with zlib vanished. Then I install rails with gem install rails. Note to mention I had installed gem before, and after recompile and install zlib, I don't recompile neither install gem (actually I don't knew how uninstall it because I don't found a script to do that)
so I have been trying to run a C++ program which requires Zlib library on compiling the file it gave an error saying "zlib.h no such file or directory exists" upon looking in usr/local/include i found that the file is not there can i just copy the file to that location or should i Install some thing. i am kinda new to ubuntu so please help
In case you don't want or need to use the full zlib, it is fairly easy to write wrapper routines which map the zlib functions 1:1 to ordinary file functions which don't support compression and decompression.
Recently I need to use zlib in programming on Ubuntu and here I have a problem.I wrote a small program to test zlib functions and I built it in Eclipse.I found it can be compiled but there were some linking errors like this:
Prior to installing MRtrix3, I installed the necessary packages as per the installation instructions, including zlib1g-dev. I just ran sudo apt-get install zlib1g-dev to check if it was installed. Terminal gave me this:
Reading package lists... Done Building dependency tree Reading state information... Done zlib1g-dev is already the newest version (1:1.2.8.dfsg-2ubuntu4). 0 upgraged, 0 newly installed, 0 to remove 292 not upgraded
Anyway, since I know nothing and am just meandering through this on my own even though I can copy paste the list of dependencies someone else has posted on the internet, I decide to only install zlib1g-dev since the other ones are required for optional modules (which I'll probably need later and regret not installing now).
How did you install your PostgreSQL? If it was from the standard Ubuntu packages, it should have compression. If it was from source, you need to recompile with zlib available - remember to have the developer package. Normally, this would only happen if you explicitly configured it with "--disable-zlib".
Zlib is a popular open-source compression library used by many software applications to compress and decompress data. While it can be installed in Ubuntu using the apt package manager, you may need to install it from the source code if the version available in the Ubuntu repositories is outdated or if you need to customize the installation. In this post, we will discuss how to install zlib in Ubuntu from the zlib source code.
The first step is to download the zlib source code. You can download the latest version of zlib from the official website at Alternatively, you can download the source code using the following command in the terminal:
Once the installation is complete, you can verify that zlib is installed on your system by checking the files install in the previous step.We can also build a C program calling zlib to verify it is ready to use by C++ program.wget zpipe.c -o zpipe -lzIf gcc returns no error, congratulations, you Zlib is ready.Read more:
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Hey guys, I'm having this same zlib problem on gems. See my output belowfor what I have installed, and the error I get when I try and run anygem commands. Also as you can see I have zlib[devel] installed. Some onementioned something about the headers being installed with zlib??? I'mnot sure I know what that means...could someone enlighten me? Any helpappreciated...thanx!
[root@dhcp226-12 ruby-1.9.2-p136]# ruby -vruby 1.9.2p136 (2010-12-25 revision 30365) [i686-linux][root@dhcp226-12 ruby-1.9.2-p136]# gem -v1.3.7[root@dhcp226-12 ruby-1.9.2-p136]# rails -vRails 2.3.5[root@dhcp226-12 ruby-1.9.2-p136]# gem install railsERROR: Loading command: install (LoadError) no such file to load -- zlibERROR: While executing gem ... (NameError) uninitialized constant Gem::Commands::InstallCommand[root@dhcp226-12 ruby-1.9.2-p136]# yum install zlib zlib-develLoaded plugins: presto, refresh-packagekitSetting up Install ProcessPackage zlib-1.2.3-23.fc12.i686 already installed and latest versionPackage zlib-devel-1.2.3-23.fc12.i686 already installed and latestversionNothing to do
...hey Z, thanx for the reply. 'gem cleanup' does work, but when I try'gem install rails' I get the zlib error below. I can't seem to installany gems due to the zlib problem. I looked into rvm, but I can't see toget that installed. I am using Fedora, so I used yum to install rvm, butcan't seem to get that working either. rvm doesn't seem to be in mypath, and I can find an executable for it in the .rvm folder. I'm goingto continue working on this, and will post back when I finally figure itout. Thanx!
[root@dhcp226-12 .rvm]# gem update railsERROR: Loading command: update (LoadError) no such file to load -- zlibERROR: While executing gem ... (NameError) uninitialized constant Gem::Commands::UpdateCommand
If I check -project.org/bin/linux/ubuntu/groovy-cran40/, I notice that r-base-core 4.0.3 is only available in an AMD64 variant, per the amd64 in the filenames. I observe that the r-base package's files do not have amd64 in their filenames. To me, that suggests that, currently, you're only running R 4.0.3 on Ubuntu 20.10 if you are on an Intel/AMD 64-bit platform. -project.org/bin/linux/ubuntu/groovy-cran40/Packages seems to back that up.
I just figured it out. The fact that headers are needed suggests I need zlib1g-dev, too. I installed it and got past it. Finding I may need other packages, too. Working through it now, and will post update later.
This short tutorial shows you how to install zlib on Ubuntu Linux Server. The process is very simple. For this tutorial, I'll be installing zlib version 1.2.3. Linux kernel is 2.6.15-26-powerpc. I have used a Mac Mini (powerpc/ppc architecture). GCC version number is 4.0.3. Your configuration may be different from mine but the installation steps below should work fine for most configurations with little or no change at all (including other Linux distributions and even unixes e.g. MacOS X).
"zlib is designed to be a free, general-purpose, legally unencumbered -- that is, not covered by any patents -- lossless data-compression library for use on virtually any computer hardware and operating system. The zlib data format is itself portable across platforms. Unlike the LZW compression method used in Unix compress(1) and in the GIF image format, the compression method currently used in zlib essentially never expands the data. (LZW can double or triple the file size in extreme cases.) zlib's memory footprint is also independent of the input data and can be reduced, if necessary, at some cost in compression."
Before starting, please check to see if there is a latest version available to download. Visit to find out about the available versions. IMPORTANT: See "Configuring Ubuntu Linux After Installation" to install the development tools required to compile and install zlib from source code.
I have Ubuntu 9.10 (not 64bit) running with a basic LAMP stack (configured per the "Setting up a LAMP Server on Ubuntu 9.10 (Karmic)" guide on the Linode library), and a site running WordPress. The auto-upgrading function of WP is having some trouble, claiming that the zlib extension is missing - but it's not, it's definitely present and enabled.
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