If you're doing this because a Perl module has a dependency on a native library (e.g. XML::LibXML), and you need to load the library from a non-default path (e.g. you have a version of libxml2 not in /lib or /usr/lib) and you want to avoid modifying LD_LIBRARY_PATH in a wrapper script or some kind of pseudo-wrapper like that shown above, there is another alternative. In the .bs file for the module, place a call to dl_load_file passing the absolute name of the native library. I used an environment variable to store my custom library path:

# Need to find libxml2. Cannot set LD_LIBRARY_PATH as it is already
# cached by the linker. So we load libxml2 BEFORE loading 
# XML::LibXML's library.
dl_load_file($ENV{FOO_PATH} . '/lib/os/libxml2.so.2');
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