add -fspec-constr-count workaround

ghc 7 produces these warnings http://hackage.haskell.org/trac/ghc/ticket/4288
The specialization is enabled by -O2, and the default limit of 3 is
there to avoid specialization blowing up binary size. Perhaps that default
is a little low? I needed 4 to avoid a warning on Unused.hs, and 5 to avoid
warnings on test.hs

1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 69fb51807..01a1a6a54 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 PREFIX=/usr
 IGNORE=-ignore-package monads-fd
-GHCFLAGS=-O2 -Wall $(IGNORE)
+GHCFLAGS=-O2 -Wall $(IGNORE) -fspec-constr-count=5
 ifdef PROFILE
 GHCFLAGS=-prof -auto-all -rtsopts -caf-all -fforce-recomp $(IGNORE)
 endif