On Thu, 2008-01-17 at 13:51 +0000, Adrian Hey wrote:
Hello,
Looking at the latest Cabal docs, I see that in addition to ghc-options, there are also ghc-prof-options and ghc-shared-options. What isn't clear to me though from the docs is that are the latter two in addition to the first, or are they a substitute for the first (for profiling/shared).
IOW, if I already have.. ghc-options: -O2
will the O2 also be applied to profiling build (say)? Or do I need an extra explicit.. ghc-prof-options: -O2
They are additive. I'm not at all convinced about these fields. It's not clear what their use cases are. As Adam says, adding -O is discouraged. If I had my way I'd make hackage require a performance profile to be supplied along with any package that wanted to use -O2 over -O. Duncan