Jonas:
What does as -version
show? If it doesn't show Apple Inc version cctools-870, GNU assembler version 1.38> (you have to press ctrl-c to quit it) try running sudo xcode-select -s /Applications/Xcode.app
Afterwards, try the above command again to verify it shows the expected result. Maybe the link between the dummy /usr/bin/as and clang still somehow exists from when you had Xcode 7.
1% as -version clang: error: unknown argument: '-version'2% as --version Apple LLVM version 7.0.0 (clang-700.1.76) Target: x86_64-apple-darwin14.5.0 Thread model: posix
Ok, wrong version, thanks.
3% sudo xcode-select -s /Applications/Xcode.app Password: 4% as --version FATAL:/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchai n/usr/bin/../libexec/as/x86_64/as: I don't understand '-' flag! 5% as -version Apple Inc version cctools-870, GNU assembler version 1.38 ^CInterrupted by signal 2
Ok!
6% build-gpc.command ... configure: error: installation or configuration problem: C compiler cannot create e xecutables. make[2]: *** [p/rts/Makefile] Error 1 make[1]: *** [stage1_build] Error 2 make: *** [bootstrap] Error 2
Hmm.
Tom
Thomas D. Schneider, Ph.D. Senior Investigator National Institutes of Health National Cancer Institute Center for Cancer Research Gene Regulation and Chromosome Biology Laboratory Molecular Information Theory Group Frederick, Maryland 21702-1201 schneidt@mail.nih.gov https://schneider.ncifcrf.gov (current link) https://alum.mit.edu/www/toms (permanent link)