configure: require gplv2 for prores

Signed-off-by: Elvis Presley <elvis@e.p>

diff --git a/configure b/configure
index fb58ac9..32256cd 100755 (executable)
--- a/configure
+++ b/configure
@@ -1411,6 +1411,7 @@ nellymoser_decoder_select="mdct sinewin"
 nellymoser_encoder_select="mdct sinewin"
 png_decoder_select="zlib"
 png_encoder_select="zlib"
+prores_decoder_deps="version2 gpl"
 qcelp_decoder_select="lsp"
 qdm2_decoder_select="mdct rdft mpegaudiodsp"
 ra_144_encoder_select="lpc"