TOUGH2-MP compilation error

Hello everybody,

My research centre has a version of TOUGH2-MP and we are trying to install it with ECO2N eos in the cluster:

Cluster: Rocks Cluster
Operating System: Cent OS -> (2.6.32-220.13.1.el6.x86_64 #1 SMP Tue Apr 17 23:56:34 BST 2012 x86_64 x86_64 x86_64 GNU/Linux)
Compiler mpif90: GNU Fortran (GCC) 4.4.7 20120313 (Red Hat 4.4.7-4.

However, we can only get the compiler to start if we change

FFLAGS = -O -r8 -i4
to

FFLAGS = -O

but then we get the following error:

mpif90 -O   -c -o Data_DD.o Data_DD.f
mpif90 -O   -c -o Mem_Alloc.o Mem_Alloc.f
mpif90 -O   -c -o MULTI.o MULTI.f
MULTI.f:232.34:

 
              IF(EVOL(N).GE.1.E50) THEN
                                  1
Error: Real constant overflows its kind at (1)
MULTI.f:234.18:

 
              ENDIF
                  1
Error: Expecting END DO statement at (1)
make: *** [MULTI.o] Error 1

We are stuck on this. Can anyone, please, help?

Thank you very much,

Júlio