Just a simple text process program. When I runhaskell it. I got:
GHCi runtime linker: fatal error: I found a duplicate definition for symbol
fps_minimum
whilst processing object file
~/.cabal/lib/bytestring-0.9.1.3/ghc-6.8.3/HSbytestring-0.9.1.3.o
This could be caused by:
* Loading two different object files which export the same symbol
* Specifying the same object file twice on the GHCi command line
* An incorrect `package.conf' entry, causing some object to be
loaded twice.
GHCi cannot safely continue in this situation. Exiting now. Sorry.
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