Need MFC libraries

[JJTech0130]

Just an addition to the build instructions,
mdnsresponder requires the MFC component in Visual Studio, which isn't always included. The build fails with cryptic errors otherwise.

[JJTech0130]

Also Clang? Should hold off reporting issues till I get all the way through so I can get them all

[JJTech0130]

Also is it really necessary to compile winsparkle? It appears that there is a dll already in the libraries folder...

[JJTech0130]

Also I'm having to use vcpkg to install openssl, not sure if that's the correct way

[JJTech0130]

And now I'm getting this error...

Severity	Code	Description	Project	File	Line	Suppression State
Error	C2039	codecvt_utf8: is not a member of std	AltServer	C:\Users\JJTech\source\repos\AltServer-Windows\AltServer\ClientConnection.cpp	27

EDIT: Searching the internet, I'm seeing people had deprecation warnings for codecvt_utf8... I wonder if I'm using a newer version where it was finally removed...
EDIT: Just needed to add this to ClientConnection.cpp, as stated in the README 🤦‍♂️:

#include <codecvt>

[JJTech0130]

Now trying to compile ldid.lib for it...
Getting this error:

Severity	Code	Description	Project	File	Line	Suppression State
Error		could not open 'C:\Users\JJTech\vcpkg\installed\x86-windows\lib*.lib': invalid argument	ldid	C:\Users\JJTech\source\repos\AltServer-Windows\ldid\lld-link	1

EDIT: Only way I could find to fix this is to temporarily modify vcpkg to disable autolinking per microsoft/vcpkg#4359, except removing the condition entirely

[JJTech0130]

I build it successfully in a VM! now to get it to build in appveyor

[kylefmohr]

Can confirm that MFC is needed to build mDNSresponder, specifically, one needs to re-run the Visual Studio 2019 installer, go to the "Individual components" tab, check the box for "C++ MFC for latest v142 build tools (x86 & 64)" and click "Modify"

Thanks for the tip @JJTech0130