When /hotpatch is used in a compilation, the compiler ensures that first instruction of each function is two bytes, which is required for hot patching.
After compiling with /hotpatch, you must link with /FUNCTIONPADMIN (Create Hotpatchable Image), which completes the preparation for making an image hotpatchable. When you compile and link an image with a single invocation of cl.exe, /hotpatch implies /functionpadmin.
When building an image that will run on one of the chips in the Itanium Processor Family (IPF), it is not necessary to use /hotpatch, however you should use /functionpadmin on images built for IPF.
To set this compiler option in the Visual Studio development environment
Open the project's Property Pages dialog box. For details, see How to: Open Project Property Pages.
Click the C/C++ folder.
Click the Command Line property page.
Type the compiler option in the Additional Options box.
To set this compiler option programmatically
Guidance