iconutil on El Capitan (OS X 10.11) seems to require strict input file names that begin with "icon_" prefix. Following describes this: http://stackoverflow.com/questions/31632304/iconseterror-failed-to-generate-icns/32490491#32490491 The first few lines of the MacPorts build log starting with the error: :info:build [ 0%] Built target kblackbox_automoc :info:build /Applications/Xcode.app/Contents/Developer/usr/bin/make -f CMakeFiles/kblackbox.dir/build.make CMakeFiles/kblackbox.dir/depend :info:build make[2]: Entering directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_kde_kblackbox/kblackbox/work/build' :info:build [ 2%] Generating kblackbox_SRCS.icns :info:build /usr/bin/iconutil --convert icns --output /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_kde_kblackbox/kblackbox/work/build/kblackbox_SRCS.icns /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_kde_kblackbox/kblackbox/work/build/kblackbox_SRCS.iconset :info:build error: Unsuported image format :info:build error: Unsuported image format :info:build error: Unsuported image format :info:build error: Unsuported image format :info:build error: Unsuported image format :info:build /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_kde_kblackbox/kblackbox/work/build/kblackbox_SRCS.iconset:warning: Missing image for variant named 'icon' resource error: 'Failed to load image at 128@2x.'. :info:build /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_kde_kblackbox/kblackbox/work/build/kblackbox_SRCS.iconset:warning: Missing image for variant named 'icon' resource error: 'Failed to load image at 256@1x.'. :info:build /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_kde_kblackbox/kblackbox/work/build/kblackbox_SRCS.iconset:warning: Missing image for variant named 'icon' resource error: 'Failed to load image at 256@2x.'. :info:build /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_kde_kblackbox/kblackbox/work/build/kblackbox_SRCS.iconset:warning: Missing image for variant named 'icon' resource error: 'Failed to load image at 512@1x.'. :info:build /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_kde_kblackbox/kblackbox/work/build/kblackbox_SRCS.iconset:warning: Missing image for variant named 'icon' resource error: 'Failed to load image at 512@2x.'. :info:build /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_kde_kblackbox/kblackbox/work/build/kblackbox_SRCS.iconset:error: Variant named 'icon' contains no image resources. :info:build /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_kde_kblackbox/kblackbox/work/build/kblackbox_SRCS.iconset:error: Failed to generate ICNS. :info:build make[2]: *** [kblackbox_SRCS.icns] Error 1 Reproducible: Always Steps to Reproduce: 1.on El Capitan, run "port install kblackbox" 2. 3. Actual Results: build failed Expected Results: build should have succeeded If the fix for qt4-mac on El Capitan hasn't been incorporated yet, one might need manual intervention to get that prerequisite to install, as described here: https://trac.macports.org/ticket/48129 This ticket corresponds to MacPorts ticket https://trac.macports.org/ticket/49106
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