[CMake] Removing flags added by the Platform modules

[Will Dicharry]

We have a problem on AIX with the IBM C++ compiler.  In the standard 
cmake AIX Platform module in cmake-2.6/Modules/Platform, the following 
variables are set:

SET(CMAKE_PLATFORM_REQUIRED_RUNTIME_PATH /usr/lib /lib)
SET(CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "-Wl,-blibpath:")

The strange thing is that we don't link any shared libraries, but linker 
is being invoked with those flags for our executables.  Those flags are 
introducing an incomplete link on our system, so we need to get rid of 
them.  I've tried removing them in the CMakeLists file for our project with

set( CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG "" CACHE INTERNAL "" FORCE )

but to no avail, even with a clear cache.  Is there some way to do this 
or a cleaner way to deal with the problem?

Any help would be greatly appreciated.

Thanks,
Will

-- 
Will Dicharry
Software Developer
Stellar Science Ltd Co
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