Hello, I have a FORTRAN code that uses some c routines. I compile it with gcc and gfortran in RedHat Linux without any problem. Recently I bought a laptop with Ubuntu. I have gcc and gfortran version 4.4.3 in it. When I compile the code, I see the following warning: warning: ignoring return value of 'fread', declared with attribute warn_unused_result When I try to run the executable, it does not run as expected. Is there any library files that I am missing? Please help. I am using the following flags: gcc -c -O3 -DLINUX gfortran -c -O3 -DLINUX -fdefault-real-8 -ffree-line-length-132 By the way, I have installed Intel compilers, and the code runs fine with icc and ifort. I am puzzled! Thanks, Muhammad Akbar
