libgcc-4.8.2_0+universal build fails on fresh reinstall of macports

[Polyergic (Shad Sterling)]

To resolve a problem upgrading libgcc I saved my list of installed ports, removed everything, reinstalled macports, and tried installing libgcc from scratch. It still fails, apparently due to the same problem. In main.log there are a lot of messages that seem out of order, such as

   :info:build checking for inttypes.h... yes
   :info:build yes
   :info:build checking whether errno must be declared... checking for stdint.h... yes
   :info:build no
   :info:build checking for unsigned long long... checking size of int... yes
   :info:build checking for inttypes.h... 4
   :info:build checking for a 64-bit type... yes
   :info:build uint64_t

and

   :info:build configure: creating ./config.status
   :info:build -1
   :info:build checking for vfork.h... no

and there are an awful lot of compiler warnings, which I don't know enough to know if any are actually problematic. grep error main.log reveals the same error that occurred before the reinstall:

   :info:build configure: error: GNU Fortran is not working; please report a bug in http://gcc.gnu.org/bugzilla, attaching /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc48/libgcc/work/build/x86_64-apple-darwin11/libgfortran/config.log

From grep fatal config.log it looks like some of the source is missing:

   xgcc: fatal error: no input files
   xgcc: fatal error: no input files
   conftest.c:9:10: fatal error: 'ac_nonexistent.h' file not found
   conftest.c:52:26: fatal error: minix/config.h: No such file or directory
   conftest.c:19:10: fatal error: 'minix/config.h' file not found
   xgcc: fatal error: no input files
   xgcc: fatal error: no input files
   gfortran: fatal error: no input files
   gfortran: fatal error: no input files

I did the reinstall & rebuild more than once before I was sure I was getting the whole process right. I don't remember every variation, I started with the instructions at wiki:Migration and ​http://guide.macports.org/#installing.macports.uninstalling , and ended up with this:

   $ sudo port -qv installed > ~/Downloads/portslist.text
      # I figured out too late that I really only want requested ports e.g. port -qv installed requested
   $ sudo port -f uninstall installed
      # no errors
   $ sudo port clean all
      # no errors
   $ sudo rm -rf /opt/local /Applications/DarwinPorts /Applications/MacPorts /Library/LaunchDaemons/org.macports.* /Library/Receipts/DarwinPorts*.pkg /Library/Receipts/MacPorts*.pkg /Library/StartupItems/DarwinPortsStartup /Library/Tcl/darwinports1.0 /Library/Tcl/macports1.0 ~/.macports
      # not all existed
   $ /System/Library/CoreServices/Installer.app/Contents/MacOS/Installer ~/Downloads/MacPorts-2.2.1-10.7-Lion.pkg
      # GUI install succeded
   $ sudo less /opt/local/etc/macports/macports.conf
      # all at defaults
   $ sudo port selfupdate
      # ports tree updated
   $ sudo port upgrade outdated
      # nothing to do
   $ sudo port upgrade installed
      # nothing to do
   $ sudo port install libgcc +universal
      # succeeds on all prerequisites, fails on libgcc; see attached log
   $ 

Running OS X 10.7.5 with XCode 4.6.3 (4H1503) on a mid-2008 macbook (too old for 10.9 so I can't upgrade XCode, it doesn't look like 10.8 is still available). The computer slept at some point during the build, which I hope has no effect on the process.

[Polyergic (Shad Sterling)]

main.log

[Polyergic (Shad Sterling)]

config.log