#50218: Error: Failed to install doxygen -----------------------+-------------------- Reporter: justin@… | Owner: css@… Type: defect | Status: closed Priority: Normal | Milestone: Component: ports | Version: 2.3.4 Resolution: invalid | Keywords: Port: doxygen | -----------------------+-------------------- Comment (by cal@…): There's ProblemHotlist#xcode7.2, but that would print a large error message and crash, so isn't the case here. Additionally, El Capitan introduced System Integrity Protection that prevents you from modifying /usr/ and /bin/ and a couple of other locations, but that doesn't seem to be the culprit either (the files are there, as you can see). Have you tried repairing disk permissions, maybe the macports user cannot read /usr/include? Actually, try putting the test.cpp in /tmp, do chmod 644 /tmp/test.cpp and do this: {{{ sudo -u macports /usr/bin/clang++ -v -I/opt/local/include -pipe -Os -stdlib=libc++ -DICONV_COMPILES -arch x86_64 -mmacosx-version-min=10.11 -o /dev/null -c /tmp/test.cpp }}} Maybe that uncovers something. What does `mdfind -name errno.h` print on your system? -- Ticket URL: <https://trac.macports.org/ticket/50218#comment:13> MacPorts <https://www.macports.org/> Ports system for OS X