On 8/8/12 2:55 PM, Thomas DuBuisson wrote:
You need to build GHC using the integer-simple library (instead of the 'integer-gmp' library). From the 6.12.1 release notes:
""" It is now possible to build GHC with a simple, BSD-licensed Haskell implementation of Integer, instead of the implementation on top of GMP. To do so, set INTEGER_LIBRARY to integer-simple in mk/build.mk. """
How to I build the Haskell platform in this case? Is it enough to just use a GHC that was build with INTEGER_LIBRARY=integer-simple in the build of the platform, or do I need to somehow configure the platform build to prevent packages from importing integer-gmp?
In addition, some libraries depend on integer-gmp (sadly). This is usually part of an optimization and when I see it I tend to send in a patch adding an "integer-simple" flag so you can cabal install it by including "-finteger-simple" on the command line (text is an example of one such library).
Does this mean that text does already support this flag?
And that's it! Your integer operations will run slower but you should get stable operation even when using the GMP library.
What about operations on Integers with small values? Are they still efficient, i.e. directly mapped to operations on native int? I suppose that Integers with big values are not very common in the runtime and the base packages. Thanks, Lars