can't set "compiler.blacklist": couldn't determine build number of compiler "llvm-gcc-4.2"

[MooersLab (Blaine Mooers)]

I get the following error when upgrading Error: Unable to open port: can't set "compiler.blacklist": couldn't determine build number of compiler "llvm-gcc-4.2" . I have the compiler in question installed. I have a current version of Xcode with command line tools. I downloaded and replaced the command line tools, but got no change in behavior. I tried sudo port -d sync which reported DEBUG: Copying /Users/blaine-mooers/Library/Preferences/com.apple.dt.Xcode.plist to /opt/local/var/macports/home/Library/Preferences. I uninstalled gcc6. I then could not re-install gcc6. Instead, I got the first error message. Removal of gcc6 did not permit completion of the sudo port -d sync command. I uninstalled the inactive ports. I uninstalled the the leaves. I ran selfupdate and upgrade outdated again. I get the first error message again. I have attached the output of sudo port -d upgrade outdated.

[MooersLab (Blaine Mooers)]

output of sudo port -d upgrade outdated

[ryandesign (Ryan Carsten Schmidt)]

Determining the build number of llvm-gcc-4.2 should only be relevant with versions of Xcode that include that compiler. You're on Yosemite, and none of the versions of Xcode that are compatible with Yosemite include that compiler, so this situation shouldn't arise.

Please verify that the file /usr/bin/llvm-gcc-4.2 and the directory /Developer do not exist on your system.

[ryandesign (Ryan Carsten Schmidt)]

I'll close this since it seems to be a problem with the user's system, not a MacPorts bug.