GHC -split-objs, Doesn't Print Error If GHC Built With SplitObjs = NO.

[dejones]

If GHC is called with flag -split-objs but GHC was built with SplitObjs? = NO, then GHC simply ignores the -split-objs flag; however, GHC should print an error message and exit, stating that GHC was built without support for split objects.

Please refer to the thread on the gtk2hs-users mailing list ([Gtk2hs-users] Gtk2Hs Linker Errors, Simple Window from Tutorial) for a test case and the resulting linker problems that occurred when building gtk2hs.

 http://sourceforge.net/mailarchive/forum.php?thread_name=fe05cbe50811301138q474b99c5kf48497d932e7cb14%40mail.gmail.com&forum_name=gtk2hs-users

 http://sourceforge.net/mailarchive/forum.php?thread_name=1228147821.13936.78.camel%40aconit&forum_name=gtk2hs-users

 http://sourceforge.net/mailarchive/forum.php?thread_name=20081201184819.GB13054%40zombie.inf.tu-dresden.de&forum_name=gtk2hs-users

[duncan]

See also  http://hackage.haskell.org/trac/hackage/ticket/421

[simonmar]

SplitObjs is overloaded: it means both enable splitting (-split-objs) and also build the bootlibs with splitting on.

There's no good reason to want to disable splitting support completely, unless the platform doesn't support it. So we should have two separate knobs here.

[simonmar]

Fixed:

Wed Mar 11 11:00:58 GMT 2009  Simon Marlow <marlowsd@gmail.com>
  * FIX #2832: Setting SplitObjs=NO doesn't disable -split-objs in GHC
  Now ghc --info reports whether-split-objs is supported, rather than
  whether the libraries were built using -split-objs.

[igloo]

Merged.