Question about Xcode 4.2.1 on Lion

[Ryan Schmidt]

On Feb 5, 2012, at 13:56, Jeff Singleton wrote:

> Ok so I got past git-core, but now no version of GCC will install.  I have tried gcc43, gcc44, gcc45, and finally, skipping gcc46, I tried gcc47.  All of them fail to build with the same errors:
> 
> checking for library containing strerror... make[2]: *** [configure-build-libiberty] Error 1
> make[2]: *** Waiting for unfinished jobs....
> none required
> checking how to run the C preprocessor... /lib/cpp
> configure: error: in `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc47/gcc47/work/build/libiberty':
> configure: error: C preprocessor "/lib/cpp" fails sanity check
> See `config.log' for more details.

This is not an uncommon error message; we've fixed it in many other ports before. If you get the same after cleaning and trying again, file a bug report in the issue tracker so it can be investigated and fixed. Be sure to attach the full main.log file, as well as the aforementioned config.log file.