release_notes: document not fully understood mingw-sdl issue

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

diff --git a/doc/RELEASE_NOTES b/doc/RELEASE_NOTES
index 4e4b0e630b53255e4cfb03cfeff5f639a6e2093e..7861bfd4bcbd59ddac9d82096e3723ebfc0ca309 100644 (file)
--- a/doc/RELEASE_NOTES
+++ b/doc/RELEASE_NOTES
@@ -30,6 +30,8 @@ FFmpeg, please try git master to check if the issue still exists. If it does,
 make your report against the development code following the usual bug reporting
 guidelines.
 
+Note, if you have difficulty building for mingw, try --disable-outdev=sdl
+
 
 API changes
 -----------