[project @ 2004-01-09 12:36:54 by simonmar]

[ghc-hetmet.git] / mk / suffix.mk

diff --git a/mk/suffix.mk b/mk/suffix.mk
index 3fddbd8..4da8fa9 100644 (file)
--- a/mk/suffix.mk
+++ b/mk/suffix.mk
@@ -328,6 +328,11 @@ endif
 #-----------------------------------------------------------------------------
 # Preprocessor suffix rule
 
+# We're careful to remove cpp-droppings from the generated file; things like
+# '#line' pragmas.  But we also leave in #include directives, because these
+# are likely to be intentional (perhaps the file is going to be CPP'd again -
+# this is used by ghc/compiler/parser/Parser.y.pp).
+
 % : %.pp
        @$(RM) $@
-       $(CPP) $(RAWCPP_FLAGS) $(CPP_OPTS) -x c $< | $(SED) -e '/^#/d' > $@
+       $(CPP) $(RAWCPP_FLAGS) -P $(CPP_OPTS) -x c $< > $@