at first

When building and debugging Fortran on Windows, I investigated what kind of tools should be combined. I was a little stuck with a problem that did not stop at the breakpoint in debugging, but it was solved. I am thinking with the minimum necessary configuration.

Tools and environment to use

・ Windows 10 ・ Visual Studio Code

Two extensions: Modern Fortran, C / C ++ -Gfortran (free compiler)

1. Fortran compiler preparation

-Download "tdm64-gcc-***. Exe" from TDM-GCC

Although it is gcc, gfortran is also included. ·install. Don't forget to check fortran. 　 -Check if it is installed. The following two files are important.

2. VS Code preparation

VS Code installation is omitted. -Search for "Modern Fortran" from "Extensions" on the far left of the screen and install it.
"C / C ++" is also installed automatically. -Right-click the installed "Modern Fortran" → Extension settings -Specify the location of gfortran 　 -Run-> Open Configuration-> C ++ (GDB / LLDB)
Fortran, but choose C ++. Or rather, there is no Fortran in the first place. Set "program" and "miDebuggerPath" according to your environment as shown below. I wonder if the others can be left as they are.

{
 // Learn the available attributes using IntelliSense.
 // Hover and display the description of existing attributes.
 // Check the following for more information: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
 "name": "(gdb) start",
            "type": "cppdbg",
            "request": "launch",
            "program": "${workspaceFolder}/a.exe",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "miDebuggerPath": "C:/TDM-GCC-64/bin/gdb.exe",
            "setupCommands": [
                {
 "description": "Enable reformatting of gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                }
            ]
        }
    ]
}

3. Fortran build

-Build work is executed at the command prompt, not on VS Code. -Be sure to add the option "-g" to debug this time.

C:\Temp>gfortran -g fortran_program.f90

-The exe file is created.

4. Debugging with VS Code

-Open the Fortran file with VS Code and hit the debug point to the left of the number of lines. -Execution-> Debug execution. Then, it stops at the debug point properly!

the end

I was a little clogged up with the need for options when building, but I'm glad I did. When I was a student, I could only debug with print statements, so I'm deeply impressed that I can debug with Fortran as well. Please use it if you like.

I'm not sure if "gfortran -g" can be run from VS Code. I wonder how to do it, maybe it's easy, but I'll leave it here.

Try Fortran with VS Code up to debug settings. [Win10]