AVCODEC AVUTIL AVFORMAT AVFILTER SWSCALE
BOOST_FILESYSTEM BOOST_THREAD BOOST_DATETIME BOOST_SIGNALS2 BOOST_REGEX
SAMPLERATE POSTPROC TIFF SSH DCP CXML GLIB LZMA XML++
- CURL ZIP FONTCONFIG PANGOMM CAIROMM XMLSEC SUB ICU NETTLE
+ CURL ZIP FONTCONFIG PANGOMM CAIROMM XMLSEC SUB ICU NETTLE PNG
"""
if bld.env.TARGET_OSX: