[project @ 1997-09-30 10:26:40 by simonm]

[ghc-hetmet.git] / configure.in

diff --git a/configure.in b/configure.in
index ad34154..e628147 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -389,6 +389,14 @@ dnl ** check for installed happy binary + version
 #
 AC_HAPPY
 
+if test x"$HappyCmd" != x; then
+   if expr $HappyVersion \< "1.3" >/dev/null; then
+       echo "   Happy Version 1.3 or later is required to compile GHC."
+       echo "   Using the Happy sources in the tree.";
+       HappyCmd=""
+   fi
+fi
+
 #
 #
 dnl ** check for installed lx binary