I am trying to install pugixml using vcpkg and linking to it using cmake. I want to use it on windows and therefor want to use wchar_t instead of char. I know that pugixml has a compiler flag for this (-DPUGIXML_WCHAR_MODE), since I have managed to use it using FetchContent previously.

However, when installing and linking to pugixml which was installed using vcpkg, I receive error:

error LNK2001: unresolved external symbol

The error is (most likely) appearing because there is a mismatch between my project and the installed project from vcpkg.

I could successfully build pugixml with my project when loading and linking to it using FetchContent, and passing my own compiler flags (-DPUGIXML_WCHAR_MODE).

My question is, is it possible to pass compiler flags to vcpkg when installing a package?