windows-autoconf

Try to find MS build tools, and provide installing path and other info needed for compiling

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As of VS7 (a.k.a. Visual Studio 2017) Microsoft recommends to query the VS setup state via COM, but not everybody is fluent in COM, and not every language has COM bindings, so I created some scripts that utilize Windows builtin tools to query this information. The resolved information is printed to stdout in JSON, e.g.

[18:45:29.29] D:\code\0tni\windows-autoconf>Tools\try_powershell.cmd
    [
    {
    "Product": "BuildTools",
    "Version": "15.0.26206.0",
    "InstallationPath": "D:\\bin\\dev\\VS\\2017\\BuildTools",
    "IsComplete": "true",
    "IsLaunchable": "false",
    "CmdPath": "D:\\bin\\dev\\VS\\2017\\BuildTools\\Common7\\Tools\\VsDevCmd.bat",
    "MSBuild": {"id": "Microsoft.Component.MSBuild", "version":"15.0.26004.1"},
    "VCTools": {"id": "Microsoft.VisualStudio.Component.VC.Tools.x86.x64", "version":"15.0.26109.1"},
    "SDK8": false,
    "SDK10": "10.0.14393.79501",
    "SDK": "10.0.14393.0",
    "Packages": [
...

There are 3 scripts

1. try_powershell.cmd will try to JIT compile some C# code that calls COM, and prints the interesting stuff to stdio
2. compile-run.cmd will try to find a C# compiler to compile the query then run the generated exe
3. try_registry.cmd will look for undocumented registry traces

As the tools was getting traction, I added more use cases such as resolving version and location of Windows SDKs, enumerating "Include" directories, and outputting configuration files for verius build systems