-ifeq "$(MinimalUnixDeps)" "YES"
-SRC_HC_OPTS += -DMINIMAL_UNIX_DEPS
-ghc_501_at_least = $(shell expr "$(GhcVersion)" \> 5.00)
-ifneq "$(ghc_501_at_least)" "1"
-boot ::
- $(CP) ../lib/std/cbits/system.c main
+ifeq "$(TARGETPLATFORM)" "i386-unknown-mingw32"
+ghc_501_at_least = $(shell if (test $(CANON_HC_VERSION) -gt 5000); then echo YES; else echo NO; fi)
+
+# -----------------------------------------------
+# GHCi calls the C procedure 'system', but alas GHC 4.08's
+# implementation of this (in the library System) didn't work
+# properly on Windows. Everything is fine if you are compiling
+# GHC with GHC 5.01 or better, but lacking that we have the following
+# hack:
+# copy system.c from lib/std (where it is correct)
+# into main/system.c (where it'll be compiled and
+# linked with the compiler)
+
+ifneq "$(ghc_501_at_least)" "YES"