OK, so you need to either start from a x86 Native Tools Command Prompt for VS 2019
or globally set the environment variables that are set in the x86 Native Tools Command Prompt for VS 2019
, like for example:
INCLUDE=C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\ATLMFC\include;C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\include;C:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.2\include\um;C:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt;C:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared;C:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um;C:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt;C:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt
LIB=C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\ATLMFC\lib\x86;C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\lib\x86;C:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.2\lib\um\x86;C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\ucrt\x86;C:\Program Files (x86)\Windows Kits\10\lib\10.0.18362.0\um\x86;C:\Users\bellenot\bin\fortran\lib
LIBPATH=C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\ATLMFC\lib\x86;C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\lib\x86;C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.24.28314\lib\x86\store\references;C:\Program Files (x86)\Windows Kits\10\UnionMetadata\10.0.18362.0;C:\Program Files (x86)\Windows Kits\10\References\10.0.18362.0;C:\Windows\Microsoft.NET\Framework\v4.0.30319;
VSINSTALLDIR=C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\
WindowsLibPath=C:\Program Files (x86)\Windows Kits\10\UnionMetadata\10.0.18362.0;C:\Program Files (x86)\Windows Kits\10\References\10.0.18362.0
WindowsSdkBinPath=C:\Program Files (x86)\Windows Kits\10\bin\
WindowsSdkDir=C:\Program Files (x86)\Windows Kits\10\
WindowsSDKLibVersion=10.0.18362.0\
WindowsSdkVerBinPath=C:\Program Files (x86)\Windows Kits\10\bin\10.0.18362.0\
WindowsSDKVersion=10.0.18362.0\
WindowsSDK_ExecutablePath_x64=C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.6.2 Tools\x64\
WindowsSDK_ExecutablePath_x86=C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.6.2 Tools\
(check for your own values)