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I am fighting to install png and EBImage R package on my linux centos 7 machine. I have always this error message:

    Error: package or namespace load failed for ‘png’ in dyn.load(file, DLLpath = DLLpath, ...):
 unable to load shared object '/home/rico/R/x86_64-redhat-linux-gnu-library/3.6/00LOCK-png/00new/png/libs/png.so':
  libpng16.so.16: cannot open shared object file: No such file or directory
Error: loading failed
Execution halted
ERROR: loading failed
* removing ‘/home/rico/R/x86_64-redhat-linux-gnu-library/3.6/png’
Warning in install.packages :
  installation of package ‘png’ had non-zero exit status

The downloaded source packages are in
    ‘/tmp/RtmpX4o4D5/downloaded_packages’

I tried to do:

yum install libpng-devel

and it output me:

Package 2:libpng-devel-1.5.13-7.el7_2.x86_64 already installed and latest version
Nothing to do

Any idea how to solve this issue ? Thanks.

  • Do you also have Anaconda installed on your machine? – Mark Nielsen May 21 at 5:29
  • Hi Mark, yes I have Anaconda 3 installed. Finally, I managed to install EBImage on my Linux centos 7 machine. sudo cp /usr/local/lib/libpng16.so.16 /usr/lib – user979974 May 25 at 7:47
  • I had the same issue. Once I removed anaconda from the path it was able to install the png package with no issues. – Mark Nielsen May 26 at 23:46
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It looks like your R package needs libpng16.so.16 (1.6. branch) whereas the default on CentOS 7 is the one you installed (1.5 branch, available via libpng package).

If you don't mind using a commercial repository, libpng 1.6 is available at GetPageSpeed repo:

sudo yum -y install https://extras.getpagespeed.com/release-latest.rpm
sudo yum install libpng16

Alternatively, although highly discouraged due to placing non-packaged files on the root filesystem, you can use precompiled binaries of libpng16 located here: extract the archive, create symlink from the precompiled library file over to libpng16.so.16, provide custom include path from the archive to the R package installation, etc...

| improve this answer | |
  • Hi Danila, thank you very for your help. I gonna use precompiled binaries of libpng16. Can you tell me how do you create a symlink from the precompiled library file over to libpng16.so.16? I gotta to search how to provide a custom include path to R package installation. That's a liltle bit new for me. – user979974 Mar 17 at 13:06
  • cd /path/where/it/is/extracted && ln -s libpng16.so.16.37.0 libpng16.so.16 that would be a mere equivalent of what a libpng16-devel package would install (unversioned soname file). – Danila Vershinin Mar 17 at 13:09
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For some reason having Anaconda on RHEL/Centos 7 causes this issue. Probably because Anaconda installs a more recent version of libpng.

I was able to get another package installed that had the same png package dependency by temporarily removing anaconda from the PATH recognized by R. Once I did this, the png package and its dependent package installed with no issues.

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