HelloWorld program does not compile on Visual Studio (Fortran)

Question

Hi! I just installed Microsoft Visual Studio Community 2022 (64 bit) - version 17.6.2 and the oneAPI HPC Toolkit on a Windows 10 machine.

I created a new Fortran Empty Project test_fortran.vfproj, which also created the solution test_fortran.sln
I then added as a source file the file main.f90, which reads:

    program main
           print *, 'Hello, World!'
    end program main

I tried to compile the solution, but I get the following error:

File MSVCRTD.lib(exe_winmain.obj): error LNK2019: reference to the external symbol WinMain not resolved in the function "int __cdecl invoke_main(void)" (?invoke_main@@YAHXZ)

File test_fortran.exe: fatal error LNK1120: 1 external not resolved

What should I do to solve this? Thanks a lot in advance,

Laura

Answer 1

Hello @lauras8306 ,

Welcome to Microsoft Q&A forum.

I guess you selected the Empty Project for creating an application with a Windows user interface, if you choose the Empty Project for creating a command-line application, this issue may not appear.

Anyways, please right-click your project > Properties > Configuration Properties > Linker > System > SubSystem > try to select Console (/SUBSYSTEM:CONSOLE) > then rebuild your project.

Feel free to let us know the results.

Sincerely,

Tianyu

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Answer 2

hi! Thanks for the answer!

Not sure if that is equivalent, but I solved it by selecting a Console Project instead of an Empty Project as format when creating the project.

Cheers,

Laura