I am getting the warning message "cl : Command line warning D9035: option 'Gm' has been deprecated and will be removed in a future release" while building my project with Visual Studio 2017 latest update 15.9.2. How to resolve this warning?
Try selecting <inherit from parent or project defaults> for the Enable Minimal Rebuild option (under C/C++ > Code Generation). After this, the option should show No (/Gm-), not in bold. Make sure you do this for your project(s) (you could have several projects in the solution), and all property pages they inherit from.
I had the same problem using Visual Studio 2019, in the end the problem was in a second project I had in the same solution, that had the option set to Yes (/Gm).
According to the documentation
You may safely remove this option from your projects.
project property "Enable Minimal Rebuild" image
Configuration properties > C\C++ > Code Generation >
set the Enable Minimal Rebuild to no,
and there is no warning.
Properties > C\C++ > Code Generation > Enable Minimal Rebuild: DELETE value - and there is no warning.
Happened for me too. Did not manage to fix it through UI. In the end I searched for "MinimalRebuild" in all project files and removed it manually - that helped
UI did not work for me either. In the .vcxproj file search: "MinimalRebuild" I had missed a second one under Debug|Win32
来源：https://stackoverflow.com/questions/53493622/command-line-warning-d9035-option-gm-has-been-deprecated-and-will-be-removed