optional_depends "%JPEG"      "--with-jpeg-mmx" "--without-jpeg-mmx" "for optimized jpeg handling"
optional_depends "ffmpeg"     "--with-ffmpeg"   "--without-ffmpeg"   "to encode mpeg movies realtime"
optional_depends "mysql"      "--with-mysql"    "--without-mysql"    "for mysql support"
optional_depends "postgresql" "--with-pgsql"    "--without-pgsql"    "for postgresql support"
