[CMake] system dependent unsaturated dependencies

[Alexander Neundorf]

On Friday 14 December 2012, Witold E Wolski wrote:
> Hi,
> 
> Just run into a problem trying to build a project using cmake on a special
> linux distribution:
> My project depends on cppunit. I find the cppunit lib using find_library
> and the project builds nicely on my machine.
> However, on a different machine with a different linux distribution I run
> into a problem of unsaturated dependenices of the cppunit lib.
> 
> /cluster/apps/cppunit/1.12.1/lib/libcppunit.so: undefined reference to
> `dlsym'
> 
> doing some research on the web I figured out the I have to link against
> libdl too.
> How do I add this dependency transparently to the cmake file?

You have to do this in your FindCPPUnit.cmake file, and add libdl.so to your 
CPPUNIT_LIBRARIES variable (which you probably have).

Alex