You have discovered a currently-active problem with cmake on macports, ie bootstrapping older systems is presently broken.
See <https://trac.macports.org/ticket/55382> for some workarounds for now, until this is fixed. Best, Ken On 2017-11-28, at 8:27 AM, Franco Vaccari wrote: > Hi, > > I had a working MacPorts installation on a Xserve running Lion (10.7.5, > latest OS supported on that machine). I wanted to add some new package and > the step "Scanning binaries for linking errors” failed. I couldn’t find a way > to pass that step, and in the end I decided to rm -r /opt/local and start a > new MacPorts installation from scratch. > > And I can’t install most of the packages, with many of them depending on > cmake, and cmake failing to install: > > [is02:/] % sudo port install cmake > Password: > ---> Computing dependencies for cmakeWarning: All compilers are either > blacklisted or unavailable; defaulting to first fallback option > Warning: All compilers are either blacklisted or unavailable; defaulting to > first fallback option > Warning: All compilers are either blacklisted or unavailable; defaulting to > first fallback option > > The following dependencies will be installed: > clang-3.9 > clang-4.0 > clang-5.0 > cmake > Continue? [Y/n]: Y > Error: Follow https://guide.macports.org/#project.tickets to report a bug. > Error: Processing of port cmake failed > [is02:/] % > > When I first tried the new installation, I had Xcode 4.2 installed. I then > updated Xcode to 4.6.3 (apparently the latest for 10.7) and repeated, ending > with the same problem. > > Is the only option to recover /opt/local from a backup, and keep it frozen? I > hope something else can be done to keep MacPorts alive on that machine… > > Thanks > > Franco
