1 files changed, 2 insertions, 2 deletions
diff --git a/mig.in b/mig.in
index 08d33e7..5c0cb3e 100644
--- a/mig.in
+++ b/mig.in
@@ -36,10 +36,10 @@ migcom=${MIGDIR-@libexecdir@}/${MIGCOM-@MIGCOM@}
 # The expansion of TARGET_CC might refer to ${CC}, so make sure it is defined.
 default_cc="@CC@"
 CC="${CC-${default_cc}}"
-default_cpp="@TARGET_CC@ -E -x c"
+default_cpp="@TARGET_CC@ -E -x c -undef"
 cpp="${CPP-${default_cpp}}"
 
-cppflags=-undef
+cppflags=
 migflags=
 files=