Because GFortran is a command-line tool, Windows users typically install it via a package manager that provides the necessary environment. The easiest way to get this on Windows 10 is through or WinLibs .
SET WATCOM=C:\WATCOM SET PATH=%WATCOM%\BINW;%PATH% SET INCLUDE=%WATCOM%\H fortran 77 compiler for windows 10 64-bit free download
Press the , type env , and select Edit the system environment variables . Because GFortran is a command-line tool, Windows users