Problem with configure on Intel Mac OS X

[Ben Abbott]

My knowledge of the internals of "./configure" is *very* poor.  
However, it appears to me that the "--with-f77=/sw/bin/g95" option no  
longer works as expected.

The results of ./configure are below

./configure --prefix=/sw --with-f77=/sw/bin/g95 --infodir='${prefix}/ 
share/info' --mandir='${prefix}/share/man' --libexecdir='${prefix}/ 
lib' --enable-shared --enable-dl --disable-static --build=i386-apple- 
darwin

[. . .]

checking for g77... no
checking for f77... no
checking for xlf... no
checking for frt... no
checking for pgf77... no
checking for cf77... no
checking for fort77... no
checking for fl32... no
checking for af77... no
checking for f90... no
checking for xlf90... no
checking for pgf90... no
checking for pghpf... no
checking for epcf90... no
checking for gfortran... gfortran
checking whether we are using the GNU Fortran 77 compiler... yes
checking whether gfortran accepts -g... yes
checking how to get verbose linking output from gfortran... -v
checking for Fortran 77 libraries of gfortran... -L -lf95
checking for dummy main to link with Fortran 77 libraries... unknown
configure: error: linking to Fortran libraries from C fails

Any thoughts/advice? ....

Ben