1 files changed, 1 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 6a418cfb6..d1f22fdda 100644
--- a/configure.ac
+++ b/configure.ac
@@ -113,6 +113,7 @@ AM_PROG_AS
 case "$host_os" in
   *darwin*)
      AC_PROG_OBJC
+     CPPFLAGS="$CPPFLAGS -DCONFIG_DARWIN"
      ;;
 esac