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Choosing the Correct Shared Library

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I'm running into a recurring problem, and I don't know how to solve it cleanly. The issue is that I need to link to shared objects. The problem is that the 32 bit and the 64 bit version have the same name.

I have both libraries, but of course the file system won't permit them to reside in the same place.

How can I make my code choose the right one?


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Keep the binaries in separate folders?


And/or give the libraries different names and use a preprocessor macro to control the name of the library you load e.g.

#if defined(BUILDING_32BIT)
const char *libname = "thelib32.dll";
#elif defined (BUILDING_64BIT)
const char *libname = "thelib32.dll";
#error "doh"

If you happen to be on OS X, use lipo instead.

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