[project @ 2005-02-07 12:16:50 by simonpj]

[ghc-hetmet.git] / mk / config.mk.in

diff --git a/mk/config.mk.in b/mk/config.mk.in
index 1a8dc38..af7dbe9 100644 (file)
--- a/mk/config.mk.in
+++ b/mk/config.mk.in
@@ -319,8 +319,13 @@ endif
 #
 #      -O is pretty desirable, otherwise no inlining of prelude
 #              things (incl "+") happens when compiling with this compiler
+#
+#      -fgenerics switches on generation of support code for 
+#              derivable type classes.  This is now off by default,
+#              but we switch it on for the libraries so that we generate
+#              the code in case someone importing wants it
 
-GhcLibHcOpts=-O -Rghc-timing
+GhcLibHcOpts=-O -Rghc-timing -fgenerics
 
 # Win32 only: Enable the RTS and libraries to be built as DLLs
 DLLized=@EnableWin32DLLs@