How to make dll from your source files?

[KirillV123]

Hello, tell me how you can get dll from source files. Similar to this (32 bits). This dll was not collected by me and now there is a need to build 64 bits. And experience in creating a DLL, I do not have enough. If it is possible, give at least a small manual on this topic. I really want to get the experience of creating dll from source files.