GhcStage2HcOpts=
GhcStage3HcOpts=
-ifneq "$(findstring thr, $(GhcRTSWays))" ""
-GhcThreaded=YES
-else
-GhcThreaded=NO
-endif
GhcProfiled=NO
GhcDebugged=NO
# be set in build.mk, which hasn't been read yet.
GhcRTSWays += $(if $(findstring NO, $(GhcUnregisterised)),thr thr_p thr_debug,)
+# We can only build GHCi threaded if we have a threaded RTS:
+ifneq "$(findstring thr, $(GhcRTSWays))" ""
+GhcThreaded=YES
+else
+GhcThreaded=NO
+endif
+
# Option flags to pass to GHC when it's compiling modules in
# fptools/libraries. Typically these are things like -O or
# -dcore-lint or -H32m. The ones that are *essential* are wired into