What is GFortran?
GNU Fortran is a part of GCC, the GNU Compiler Collection. GCC consists of a collection of front ends for various languages, which translate the source code into a language-independent form called GENERIC. This is then processed by a common middle end which provides optimization, and then passed to one of a collection of back ends which generate code for different computer architectures and operating systems. Additional information regarding what GFortran is can be found here.
This short tutorial is a guide to help familiarize you with writing a simple Hello World program using the GFortran compiler.
Install gFortran
paru -S gcc-fortranCheck to see if you have gfortran installed.
To check whether you have gfortran already installed type in the command:
(base) [yanboyang713@archlinux ~]$ which gfortran
/usr/bin/gfortranIf nothing is returned then gfortran is not installed.
Let’s create our first program
Note: It is important to include the ‘.f’ after every file that you wish to compile using the gfortran compiler.
vim fortran.fprogram helloworld
print *, “Hello World”
end program helloworldcompiling the file
gfortran fortran.fRun
./a.out