Doesn't compile if other preprocessor definitions?

Question

Programming

Good time! The problem is this in Visual Studio:

WIN64
_WINDOWS
_USRDLL
REFLECTIVE_DLL_EXPORTS
WIN_X64
REFLECTIVEDLLINJECTION_VIA_LOADREMOTELIBRARYR
REFLECTIVEDLLINJECTION_CUSTOM_DLLMAIN
CURL_STATICLIB
BUILDING_LIBCURL

Setting such parameters does not compile with the static curl library
In another project with such parameters, everything is fine:

_WINDOWS
CURL_STATICLIB
BUILDING_LIBCURL

I understand that this is most likely due to this:

REFLECTIVE_DLL_EXPORTS
WIN_X64
REFLECTIVEDLLINJECTION_VIA_LOADREMOTELIBRARYR
REFLECTIVEDLLINJECTION_CUSTOM_DLLMAIN

But I can't even understand where it comes from in the preprocessor and where it is defined.
The project itself is here: https://github.com/stephenfewer/ReflectiveDLLInjection
I'm trying to inject a dll into a notepad to make an animation taken from the site there. It's just that everything rests on a compilation error, it gives an unresolved external symbol when curl is initialized. Help me please.