changing compiler from gcc to mpiCC

[nithu]

Hi,
 
I'm using ecell software, which has the configure file generated by GNU 
Autoconf 2.57. In this software i'm trying to install the software with mpiCC 
as the compiler and not gcc. First i tried doing this when configuring using 
the command,
$ ./configure --with mpiCC=yes --without-gcc
But this option did not work, even after installing the software this way, it 
still makes use of gcc only. How do i force it to use mpiCC as the compiler and 
not gcc? And if i try using 
$ ./configure --with mpiCC=yes --without-g++
it says package not found! but on the real to in many places i saw assignments 
using g++.
 
When i look into configure file i see lines like..

compiler=$CC
:
:
CC=$ac_cv_prog_CC
:
CC=$ac_ct_CC
:
if test "$GCC"=yes; then
CFLAGS="=g -O2"
:
depcc="$CXX"
:
if no C compiler was specified use CC
LTCC=${LTCC-"$CC"}
:
CC=$lt_compiler_CXX {language specific compiler}
:

how do i know where the compiler is set to gcc which i want to change to mpiCC. 
is there any file that sets the value of variables for the configure file? If 
anyone has a clue of how to get over this, Please let me know.

Thanks,
 
NG

                
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