#52335: Xorg-libX11 1.6.3 fails to configure on sierra with Xcode 8.0 ----------------------------+-------------------------------- Reporter: Julian.Byrne@… | Owner: macports-tickets@… Type: defect | Status: new Priority: Normal | Milestone: Component: ports | Version: 2.3.4 Keywords: sierra | Port: org-libX11 ----------------------------+-------------------------------- Configure script fails with error: {{{ :info:configure checking for cpp... /usr/bin/cpp :info:configure checking if /usr/bin/cpp requires -undef... configure: error: /usr/bin/cpp defines unix with or without -undef. I don't know what to do. :info:configure Command failed: cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports .org_release_tarballs_ports_x11_xorg-libX11/xorg-libX11/work/libX11-1.6.3" && ./configure --prefix=/opt/local --without-xmlto --without-fop --disable-specs :info:configure Exit code: 1 }}} -- Ticket URL: <https://trac.macports.org/ticket/52335> MacPorts <https://www.macports.org/> Ports system for macOS