Re: [Plplot-general] Question compiling examples with gfortan

[Alan W. I. <ir...@be...>]

On 2014-11-18 23:03-0600 Struct Engr wrote:

> I have installed Plplot-5.10.0 as noted in my previous email.

Please clarify that statement; did you install a binary version from
the Ubuntu package or did you build and install PLplot from source?


> I found the
> following command

where?

> to compile with and the error meesages regarding plshades
> did not appear:
>
> gfortran -o main main.f90
> `PKG_CONFIG_PATH=/home/greg/plplot/install_directory/lib/pkgconfig
> pkg-config --cflags --libs plplotd-f95`

The reason why I ask "where" is if this is from our wiki I would like
to correct it since it is incomplete (it omits setting rpath
information).

>
> It appears to have worked (execcutable file main created) and no error
> messages.  However when I try to run the program with the following command:
>
> ./main
>
> I get the following error message:
>
> ./main: error while loading shared libraries: libplplotf95d.so.11: cannot
> open shared object file: No such file or directory

My guess is that is an error message from the run-time loader.  One
way to avoid this issue is to set rpath.  See
<prefix>/share/plplot5.10.0/examples/f95/Makefile for an example of
how our traditional build system (based on make and pkg-config)
handles this issue.  Another possibility is to set the environment
variable LD_LIBRARY_PATH to help the run-time loader find the
installed version of libplplotf95d.so.11 that you just built on your
system (if that is what you did, see first question).

Alan
__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state
implementation for stellar interiors (freeeos.sf.net); the Time
Ephemerides project (timeephem.sf.net); PLplot scientific plotting
software package (plplot.sf.net); the libLASi project
(unifont.org/lasi); the Loads of Linux Links project (loll.sf.net);
and the Linux Brochure Project (lbproject.sf.net).
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Linux-powered Science
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