Re: [Haskell-cafe] Cabal properties with conditionals

On Sat, 2009-03-21 at 14:26 +0100, Manlio Perillo wrote:

Hi.

Assuming this configuration fragment:

library xxx cc-options: -Wall

if flag(HAVE_URANDOM) cc-options: -DHAVE_URANDOM

In case the HAVE_URANDOM flag is defined, what will be the value of the used cc-options? 1) -DHAHE_URANDOM 2) -Wall -DHAHE_URANDOM

The latter. Try it. In general all fields get `mappend`ed which for list-like fields means appending. For single value fields like True/False then latter fields win. Duncan