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gcc: error: unrecognized command line option ‘-cc=gcc’

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Dear WRF community,

I have changed a little the wrf source code, and then compile em_real. There is an error of -cc=gcc as bellow. What should I do? THX.

mpif90 -fdefault-real-8 -fdefault-double-8 -w -ffree-form -ffree-line-length-none -fconvert=big-endian -frecord-marker=4 -I../../inc -I../ioapi_share -o io_int.o -c io_int.f
awk '{print "#define", toupper($4), $6}' < ../../inc/intio_tags.h > io_int_idx_tags.h
mpicc -cc=gcc -DMPI2_SUPPORT -DFSEEKO64_OK -o io_int_idx.o -c io_int_idx.c
gcc: error: unrecognized command line option ‘-cc=gcc’
Can you attach the following:
1) configure.wrf file
2) the full compile log
3) the files you have modified (if there aren't too many)?
4) Please let me know the version of the code you are compiling
Thanks. I am waiting for the recovery of my post linux system.

BTW, would you look at this: