PETSc chooses to use mpif77 as fortran compiler

[Wee-Beng TAY]

Hi,

I tried to configure PETSc using :

./config/configure.py --with-vendor-compilers=intel --with-x=0 
--with-hypre-dir=/home/taywb/lib/hypre-2.4.0b --with-debugging=0 
--with-batch=1 --with-mpi-dir=/opt/mpi/mpich --with-mpi-shared=0 
--with-blas-lapack-dir=/opt/intel/mkl/9.1.021/lib/em64t/ --with-shared=0

After running conftest and reconfigure.py,

PETSc chooses mpif77 as the fortran compiler, instead of mpif90.

I tried to use --with-fc=mpif90 but it was not allowed. I wonder why. 
I'm currently writing codes in F90. Will this configuration affect my 
F90 codes?

Thank you very much.

Regards,

Wee-Beng TAY