Resolving dependencies...
Configuring highWaterMark-0.1.1...
Building highWaterMark-0.1.1...
Preprocessing executable 'highWaterMark' for highWaterMark-0.1.1...

HighWaterMark.hs:1:12: Warning:
    -fglasgow-exts is deprecated: Use individual extensions instead
[1 of 2] Compiling HighWaterMark    ( HighWaterMark.hs, dist/build/highWaterMark/highWaterMark-tmp/HighWaterMark.o )

HighWaterMark.hs:21:1:
    Unacceptable result type in foreign declaration:
      ‘CULong’ cannot be marshalled in a foreign call
        because its data construtor is not in scope
        Possible fix: import the data constructor to bring it into scope
    When checking declaration:
      foreign import ccall safe "static get_mblocks_allocated" getMBlocksAllocated
        :: IO CULong
Failed to install highWaterMark-0.1.1
cabal: Error: some packages failed to install:
highWaterMark-0.1.1 failed during the building phase. The exception was:
ExitFailure 1