This compiler option should be avoided if possible as it degrades the performance of the Fortran code. gfortran can be forced to assume g77 ABI by passing -ff2c. G77 is binary compatible with f2c, but not with gfortran. It also generates faster code and gives us better error messages. gfortran, on the other hand, supports modern Fortran standards (Fortran 90, 95, 2003, and 2008) in addtion to the older Fortran 77 and Fortran 66 (aka FORTRAN IV), and is a clear improvement over g77 and f2c. rpm sudo pip install scipy This is copied from For Ubuntu 14. With a modern CPU (long pipeline and branch prediction) and a modern C compiler (much better alias analysis), g77 gives you no advantage over the original f2c. Update Feb21 2016: For centos: wget wget wget wget sudo yum localinstall. f2c and g77 was written by the same man and are otherwise identical. All g77 did was to skip C as an intermediate language as it came with a speed penalty in the 1980s and early 1990s. Another way to install the gcc compiler is to install it as part of the Development Tools transitional group package. (optional) Install Development Tools transitional group package. Use the dnf command and install the gcc package: dnf install gcc. G77 is the same compiler known as f2c (which can be downloaded from Netlib), or more precisely a shell script called fc which called f2c and then cc on the output. How to install GCC the C compiler on RHEL 8 / CentOS 8 step by step instructions. Binary files and libraries are also not compatible between g77 and gfortran, as they use different ABIs. , /var/repo/redhat-5.5 mkdir /var/repo cp. Gfortran is a modern Fortran compiler based on the g95 compiler. 1) mkdir /mnt/cdrom mount -t iso9660 /dev/cdrom /mnt/cdrom 2) ( ). g77 is replaced by gfortran in the GNU compiler collection (GCC), it is not renamed gfortran. G77 ang gfortran are different compilers. 'Quark' wrote in his answer that g77 is renamed gfortran.

Install gfortran redhat