1 files changed, 4 insertions, 0 deletions
diff --git a/auto/cc b/auto/cc
index 06f7413df..1aadae34f 100644
--- a/auto/cc
+++ b/auto/cc
@@ -24,6 +24,8 @@ case $CC in
          # debug
          CFLAGS="$CFLAGS -g"
 
+         CFLAGS="$CFLAGS -D HAVE_GCC_VARIADIC_MACROS=1"
+
          OBJEXT=o
          OBJOUT="-o "
          BINOUT="-o "
@@ -48,6 +50,8 @@ case $CC in
          # stop on warning
          CFLAGS="$CFLAGS -Werror"
 
+         CFLAGS="$CFLAGS -D HAVE_C99_VARIADIC_MACROS=1"
+
          OBJEXT=o
          OBJOUT="-o "
          BINOUT="-o "