gnuplot-info

[Gnuplot-info] "gnuplot: error while loading shared libraries: libgd.so.2: cannot open shared object file: No such file or directory""gnuplot: error while loading shared libraries: libgd.so.2: cannot open shared object file: No such file or directory"

[Andrew S. <sha...@go...>]

Hello all,

I have a shell script that extracts some data from log files, then calls
gnuplot to create a graph using the jpeg terminal. When I run the script
from the terminal, I am able to create the graph, but when I run the script
from a web application running on an apache http server 2.2 (on the same
machine), I see the error message "gnuplot: error while loading shared
libraries: libgd.so.2: cannot open shared object file: No such file or
directory". I've installed gnuplot 4.2,  gd-2.0.35, libpng-1.2.37,
zlib-1.2.3 and libjpeg-v7, but when I do slocate libgd, I can only find
/usr/lib/libgdm.so.2. Why would this allow the script to create the graph
when called from the terminal, but not the web application?

Re: [Gnuplot-info] "gnuplot: error while loading shared libraries: libgd.so.2: cannot open shared object file: No such file or directory""gnuplot: error while loading shared libraries: libgd.so.2: cannot open shared object file: No such file or directory"

[Hans-Bernhard B. <HBB...@t-...>]

Andrew Shanks wrote:

> from the terminal, I am able to create the graph, but when I run the script
> from a web application running on an apache http server 2.2 (on the same
> machine), I see the error message "gnuplot: error while loading shared
> libraries: libgd.so.2: cannot open shared object file: No such file or
> directory".

That's because your web server (for good reasons) runs subprocesses in 
an environment configured considerably more restrictively than a 
logged-in user's interactive shell.  Apparently one such restriction 
applies to the LD_LIBRARY_PATH.

> I've installed gnuplot 4.2,  gd-2.0.35, libpng-1.2.37,
> zlib-1.2.3 and libjpeg-v7, but when I do slocate libgd, I can only find
> /usr/lib/libgdm.so.2. 

I'm afraid you're asking the wrong tool.  The libgd.so your gnuplot 
binary uses if you run it interactively would be found by asking the 
dynamic linker about it.  On Linux, I think that's still done by

	ldd gnuplot