On Tue, Jan 19, 2021 at 02:42:10PM -0500, Craig Treleaven wrote: > Hi: > > I contribute a little to the MacPorts project. MacPorts packages many, many > open source software titles for use on Macintosh. I noticed that Gforth > failed to build on our new buildbot running on an M1 machine(aka Apple’s 64 > bit ARM SOC). The configure phase reported the following error: > > checking build system type... Invalid configuration > `arm64-apple-darwin20.1.0': machine `arm64-apple' not recognized > configure: error: /bin/sh ./config.sub arm64-apple-darwin20.1.0 failed
config.sub apparently does not know this architecture under the name arm64, but instead under the name aarch64. > For a number of years, we’ve invoked configure thusly on Intel 64 bit-based > Macs: > > ./configure --prefix=/opt/local --build=x86_64-apple-darwin14.5.0 > > I browsed through configure.ac but I have only a rudimentary knowledge of > auto tools and couldn’t determine if the “-build” flag was even necessary; If you are not cross-building, you don't need --build. configure then looks at the current machine and guesses the machine from that (with config.guess). > Incidentally, MacPorts tries to support even very old Macintosh systems > including PPC (both 32 and 64 bit) as well as Intel i386 and X86_64. With > arm64 added to the mix, that is up to 5 archs! Nice! - anton
