configure: error: C compiler cannot create executables

[William Davis]

I am getting this same "complier can not create executables" error in  
5 or 6 different ports.
this one is specifically vim-app:

configure: creating cache auto/config.cache
checking whether make sets $(MAKE)... no
checking for gcc... /usr/bin/gcc-4.0
checking for C compiler default output file name... configure: error:  
C compiler cannot create executables
See `config.log' for more details.
Error: Target org.macports.configure returned: configure failure:  
shell command " cd "/opt/local/var/macports/build/ 
_opt_local_var_macports_sources_rsync 
.macports.org_release_ports_editors_vim-app/work/vim71" && ./configure  
--prefix=/Applications/MacPorts/ --enable-gui=carbon --without-x -- 
disable-gpm --mandir=/opt/local/share/man --with-tlib=ncurses --enable- 
multibyte " returned error 77
Command output: configure: creating cache auto/config.cache
checking whether make sets $(MAKE)... no
checking for gcc... /usr/bin/gcc-4.0
checking for C compiler default output file name... configure: error:  
C compiler cannot create executables
See `config.log' for more details.

Warning: the following items did not execute (for vim-app):  
org.macports.destroot org.macports.configure org.macports.build
DEBUG:
Error: Unable to upgrade port: 1


William Davis
frstanATbellsouthDOTnet
Mac OS X.5.2 Darwin 9.2.0
XQuartz 2.1.4 - (xorg-server 1.3.0-apple10)
Mac Mini Intel Duo @ 1.86 GHz

Mundus vult decepi, ego non