Port cannot install gnuplot

[matthew20103@…]

When I was trying to install the gnuplot via macports, i.e.

sudo port clean gnuplot
sudo port install gnuplot

I got the following messages:

Error: org.macports.build for port gnuplot returned: command execution failed
Please see the log file for port gnuplot for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_math_gnuplot/gnuplot/main.log
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port gnuplot failed

After inspecting the main.log file, I found the following error message:

:info:build dyld: Library not loaded: /opt/local/lib/libpng15.15.dylib
:info:build   Referenced from: /opt/local/lib/libpangocairo-1.0.0.dylib
:info:build   Reason: Incompatible library version: libpangocairo-1.0.0.dylib requires version 31.0.0 or later, but libpng15.15.dylib provides version 30.0.0

How can I solve this problem?

[matthew20103@…]

Here attached the main.log file, please have a look.

[matthew20103@…]

Cc Me!

[neverpanic (Clemens Lang)]

Please remember to set the port field and cc the maintainer. You don't need to cc yourself. Please try to use WikiFormatting when posting in trac.

Please provide the output of otool -L /opt/local/lib/libpng15.15.dylib on your system.

[matthew20103@…]

Replying to cal@…:

Please remember to set the port field and cc the maintainer. You don't need to cc yourself. Please try to use WikiFormatting when posting in trac.

Please provide the output of otool -L /opt/local/lib/libpng15.15.dylib on your system.

I am sorry, its my first post here. Here is the output of 'otool -L /opt/local/lib/libpng15.15.dylib'

otool -L /opt/local/lib/libpng15.15.dylib

/opt/local/lib/libpng15.15.dylib:
	/opt/local/lib/libpng15.15.dylib (compatibility version 30.0.0, current version 30.0.0)
	/opt/local/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.7)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 169.3.0)

[mojca (Mojca Miklavec)]

Did you try making sure that you had the latest version of your ports installed?

sudo port clean gnuplot
sudo port selfupdate
sudo port upgrade outdated
sudo port install gnuplot

To me this looks as if pango was fetched from the server where it was linked against a newer version of libpng than you have installed on the system or something along those lines. The compatibility version on my computer in 33, even though I'm not exactly sure what that number means.

Most probably this is not a problem related to gnuplot per-se, the problem is only manifested when you install a "random" port depending on problematic libraries.

[matthew20103@…]

Replying to mojca@…:

Did you try making sure that you had the latest version of your ports installed?

sudo port clean gnuplot
sudo port selfupdate
sudo port upgrade outdated
sudo port install gnuplot

To me this looks as if pango was fetched from the server where it was linked against a newer version of libpng than you have installed on the system or something along those lines. The compatibility version on my computer in 33, even though I'm not exactly sure what that number means.

Most probably this is not a problem related to gnuplot per-se, the problem is only manifested when you install a "random" port depending on problematic libraries.

Thank you very much! The problem is solved!

[mojca (Mojca Miklavec)]

No problem.