require_cpp_condition().
Originally committed as revision 15598 to svn://svn.ffmpeg.org/ffmpeg/trunk
&& require libschroedinger schroedinger/schro.h schro_init $(pkg-config --libs schroedinger-1.0)
enabled libtheora && require libtheora theora/theora.h theora_info_init -ltheora -logg
enabled libvorbis && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
-enabled libx264 && require x264 x264.h x264_encoder_open -lx264 -lm
+enabled libx264 && require x264 x264.h x264_encoder_open -lx264 -lm \
+ && require_cpp_condition x264 x264.h "X264_BUILD >= 65"
enabled libxvid && require Xvid xvid.h xvid_global -lxvidcore
enabled mlib && require mediaLib mlib_types.h mlib_VectorSub_S16_U8_Mod -lmlib