... requirements==
Microsoft Windows XP or newer (x86 o x64); Windows RT is not supported
OpenGL compatible video card and driver
==Limitations==
WineD3D is far from perfect, and many games will not work.
Also, keep in mind that sometimes you must be a bit creative to get old games to work. PCGamingWiki is a pretty good source of information.
==Source code?==
There's no source code, I just downloaded Wine via git and cross-compiled the DLLs using mingw32 on Debian for x86.