Copy of the install procedure described there (which necessitates a working %NASMPATH%):

NASM (Assembler) + Visual Studio add-on

When missing, you'll see "missing nasm.props" errors when attempting a build.

You need to install the NASM for Visual Studio add-on:

• First, you'll first need to install NASM by way of https://github.com/netwide-assembler/nasm --> https://nasm.us/ --> https://www.nasm.us/pub/nasm/releasebuilds/2.16.01/win64/

  • run the downloaded NASM installer As Administrator and install for Everybody.

  • add nasm to your system PATH via: Windows Explorer > This PC (right-click) > Properties > Advanced System Settings > (Advanced Tab) [Environment Variables] > System Variables > Edit > Add

  • verify that nasm is found by opening a CMD console window and typing nasm -v --> expected output: NASM version 2.16.01 compiled on Dec 21 2022

  • add the NASMPATH system environment variable pointing out your nasm.exe path via: Windows Explorer > This PC (right-click) > Properties > Advanced System Settings > (Advanced Tab) [Environment Variables] > System Variables > New

    so that the next command lists that path like this (DO NOT forget to add the trailing backslash!):

    set | grep NASM
    # --> NASMPATH='C:\Program Files\NASM\'

    The NASMPATH environment variable is used by the visual Studio NASM add-on (see below) to run the installed nasm.exe.

• Then you can install the required Visual Studio 2022 add-on (VSNASM), which can be found at: https://github.com/ShiftMediaProject/VSNASM -- for install instruction, see the README there.

  • extract the VSNASM.zip file to a fresh directory, e.g. "C:\Users\Ger\Downloads\VSNASM" and then run a MSVC2022 CMD as Administrator via: Start > Visual Studio 2022 (open submenu in Start) > Developer Command Prompt for VS 2022 (right click) > More > Run as Administrator

  • then execute these commands (or their local equivalent!) in that console window:

    rem CD to the VSNASM extract directory you just created:
    cd C:\Users\Ger\Downloads\VSNASM
    install_script.bat
    rem :: expected output:
    rem :: 	
    rem :: Detected 64 bit system...
    rem :: Existing Visual Studio 2022 environment detected...
    rem :: Installing build customisations...
    rem :: Checking for existing NASM in your PATH...
    rem :: NASM version 2.16.01 compiled on Dec 21 2022
    rem :: Using existing NASM binary...
    rem :: Finished Successfully
    rem :: Press any key to continue . . .