#51097: gcc5 -- xgcc internal compiler error: Illegal instruction: 4 -----------------------+------------------- Reporter: gnwiii@… | Owner: mww@… Type: defect | Status: new Priority: Normal | Milestone: Component: ports | Version: 2.3.4 Resolution: | Keywords: Port: gcc5 | -----------------------+------------------- Comment (by gnwiii@…): On the older system (iMac 27-inch mid-2010 (i5-760)) where the macports binary failed: {{{ $ port test gmp Warning: MacPorts running without privileges. You may be unable to complete certain actions (e.g. install). ---> Fetching distfiles for gmp ---> Attempting to fetch gmp-6.1.0.tar.bz2 from http://mirrors.ibiblio.org/gnu/ftp/gnu/gmp ---> Verifying checksums for gmp ---> Extracting gmp ---> Applying patches to gmp ---> Configuring gmp ---> Building gmp ---> Testing gmp }}} I assume no news is good news. For this system, GMP used "{{{/usr/bin/clang ... -mtune=corei7 -march=corei7}}}". {{{ $ $(port dir gmp)/work/gmp-6.1.0/config.guess nehalem-apple-darwin15.4.0 }}} The newer system (iMac Retina 5K, 27-inch, Late 2015, corei5): {{{ $ $(port dir gmp)/work/gmp-6.1.0/config.guess skylake-apple-darwin15.4.0 }}} For this sysmtem, GMP used "{{{/usr/bin/clang ... -mtune=skylake -march=broadwell}}}" -- Ticket URL: <https://trac.macports.org/ticket/51097#comment:8> MacPorts <https://www.macports.org/> Ports system for OS X