I was re-emerging links and it failed: [ebuild R ] www-client/links-2.1_pre20 USE="X gpm jpeg png sdl ssl tiff -directfb -fbcon -javascript -livecd -svga* -unicode" 0 kB checking for png.h... yes checking for libpng/png.h... yes checking for png_create_info_struct in -lpng... no configure: error: You need libpng to compile Links in graphics mode !!! Please attach the following file when filing a report to bugs.gentoo.org: !!! /var/tmp/portage/links-2.1_pre20/work/links-2.1pre20/config.log !!! ERROR: www-client/links-2.1_pre20 failed. Call stack: ebuild.sh, line 1539: Called dyn_compile ebuild.sh, line 939: Called src_compile links-2.1_pre20.ebuild, line 92: Called econf '--with-x' '--with-libpng' '--with-libjpeg' '--with-libtiff' '--without-svgalib' '--without-directfb' '--with-ssl' '--with-sdl' '--disable-javascript' '--enable-graphics' '--without-fb' ebuild.sh, line 541: Called die
my fault, sorry.