configure: C++ fix for recently added C flags.

* configure: When we detect we are using C++, we filter out
certain C-only compiler options. TO that list, we must add a
pattern that gets rid of the recently added
-Wold-style-definitions and -Wold-style-declarations.

1 files changed, 1 insertions, 0 deletions

diff --git a/configure b/configure
index 13e2521a..c801a86c 100755
--- a/configure
+++ b/configure
@@ -771,6 +771,7 @@ if [ $cplusplus ] ; then
      case $flag in
        *=implicit-function-declaration | \
        *=missing-prototypes | \
+       *=old-style-* | \
        *=strict-prototypes )
        continue
        ;;