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-rw-r--r--configure.ac4
1 files changed, 4 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 102081e58..595b7b3f5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -353,6 +353,10 @@ if test "x$with_external_ffmpeg" != "xno"; then
dnl Check presence of ffmpeg/avutil.h to see if it's old or new
dnl style for headers. The new style would be preferred actually...
AC_CHECK_HEADERS([ffmpeg/avutil.h])
+ AC_CHECK_HEADERS([libavutil/avutil.h])
+ if test "$ac_cv_header_ffmpeg_avutil_h" = "yes" && test "$ac_cv_header_libavutil_avutil_h" = "yes"; then
+ AC_MSG_ERROR([old & new ffmpeg headers found - you need to clean up!])
+ fi
AC_MSG_RESULT([using external ffmpeg])
else