Re: R3.14.1 ioc example

[Andrew Johnson <anj@aps.anl.gov>]

Till Straumann wrote:

> You have to set LD_LIBRARY_PATH when _running_, not when compiling
> the 'example' application.

Good point.

> Under LINUX, in order to embed the library path into the executable, you 
> have to
>  1) either use the -rpath option to the linker
>  2) set LD_RUN_PATH when linking (note the difference: LD_RUN_PATH
>     is evaluated by the linker, LD_LIBRARY_PATH by the runtime linker,
>     i.e. when executing the linked application)

Note that setting the SHRLIB_SEARCH_DIRS variable adds the necessary 
-rpath options.  It has only been implemented on Linux though - we should 
probably do the same thing on all Unix class OSs, but I believe Linux is 
currently the only OS where we build and use shared libraries by default. 
 I don't like having a manual setting, but some sites need to be able to 
use different paths at build time and run-time.

- Andrew
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