Ross Paterson wrote:
On Wed, Feb 20, 2008 at 05:16:22PM +0100, Henning Thielemann wrote:
I have upgraded to Cabal 1.2 while still using GHC-6.4.1. In the Haskore
project there is the module NewResolutions.lhs which let GHC run into
extensive swapping (certainly due to excessive memory consumption) on
compilation when compiled with optimization. One can say, it cannot be
compiled this way. This is clearly a compiler bug, but upgrading the
compiler is not an option here. Thus I used unoptimized compilation so
far. Now, Cabal 1.2 seems to have optimization set by default. While it
was easy to add optimization by using 'GHC-Options' field it is not
obvious how to override Cabal defaults.
How about an OPTIONS -Onot pragma in the affected source file?
(Putting optimization options in GHC-Options is now discouraged.)
If you're developing and later will distribute your copy, a solution is
to run
./setup configure --disable-optimization
which will make all further building to be done without optimization.
Adding a -0not to the .cabal or source file will make it permanent to
all users of your code, disregarding of compiler version.
If your modified copy only will be used by yourself, I prefer the
suggestion by Ross as most of the project will be built with optimization.
Cheers,
Lennart Kolmodin
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