Following the [hints provided here](https://sqlite.org/src/file?name=ext/misc/fileio.c&ci=trunk): - I obtained the [source](https://sqlite.org/src/file?name=ext/misc/fileio.c&ci=trunk) - Trying <i>To compile on Windows using MSVC, a command similar to the following will usually work:</i> >cl YourCode.c -link -dll -out:YourCode.dll I am running this from the command prompt: > "D:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Enterprise\SDK\\ScopeCppSDK\\vc15\\VC\\bin\\cl.exe" FILEIO.c -link -dll -out:FILEIO.dll My Command prompt is at the directory where FILEIO.C is saved; the location contains just the file FILEIO.C I am getting this error: > fatal error C1034: ?.h: no include path set Where ? = one file name or another. I have made NO changes to FILEIO.C. t seems to fulfil the requirements [4. Programming Loadable Extensions](https://sqlite.org/loadext.html#build). I'd appreciate some help in overcoming fatal error C1034; thank you.