Hi John,
On Jan 12, 2007, at 10:25 AM, John Goerzen wrote:
On Fri, Jan 12, 2007 at 08:10:47AM -0500, Gregory Wright wrote:
-- John
Does MissingH's cabal file have a line
Ghc-Prof-Options: -prof -auto-all
No, it doesn't. None of my Cabal files do. Could anyone confirm if
this fixes it?
The rhs of the option is added to compiler command line when the
--enable-library-profiling option is included to configure. Without
this,
the --enable-library-profiling switch doesn't do anything.
(Arguably a
bug that cabal silently does nothing instead of reporting an error.)
I'd argue that Cabal should make this a default. It seems silly to
have
to add this boilerplate code to every cabal file out there just to
have
a sensible default.
Actually, for some reason my brain missed that your were talking about
a library, not an application. As lemmih said, --enable-executable-
profiling
will make you a profiling library. If you are building an app
however, unless
you include a "Ghc-Prof-Options" something like the above, or add
cost center
annotations yourself, you just get a profile that tells you that Main
took 100% of
the time.
Best,
Greg
Thanks for the info.
-- John
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