rename/RnMonad_HC_OPTS = -O2 -O2-for-C
endif
-utils/Digraph_HC_OPTS = -fglasgow-exts
-
# basicTypes/SrcLoc_HC_OPTS = -funbox-strict-fields
# We always optimise some low-level modules, otherwise performance of
# prototype via a global option instead of a myriad of per-file OPTIONS
SRC_HC_OPTS += '-\#include "cutils.h"'
+ifeq "$(ghc_ge_605)" "NO"
+utils/LazyUniqFM_HC_OPTS += -fallow-undecidable-instances
+endif
+
# ----------------------------------------------------------------------------
# Generate supporting stuff for prelude/PrimOp.lhs
# from prelude/primops.txt