Remove MinGW support

The Issue
=======

For a long time now MinGW has been unsupported and unmaintained and at this point,
it looks like something that we should just leave behind and move on.


Why Remove
==========

One of the big motivations for MinGW back in the day is that it was free compared to MSVC which was licensed based.
However, now that this is no longer true we have basically stopped updating the need CMake files.
Along with the CMake files, there are several patches to the extern libs needed to make this work.  For example, see:
https://developer.blender.org/diffusion/B/browse/master/extern/carve/patches/mingw_w64.patch

If we wanted to keep MinGW then we would need to make more custom patches to the external libs and
this is not something our platform maintainers are willing to do.

For example, here is the patches needed to build python: https://github.com/Alexpux/MINGW-packages/tree/master/mingw-w64-python3

Fixes T51301

Differential Revision: https://developer.blender.org/D2648

1 files changed, 1 insertions, 11 deletions

diff --git a/intern/ghost/intern/GHOST_SystemWin32.cpp b/intern/ghost/intern/GHOST_SystemWin32.cpp
index 240d7ccd2fe..ca7118de7b0 100644
--- a/intern/ghost/intern/GHOST_SystemWin32.cpp
+++ b/intern/ghost/intern/GHOST_SystemWin32.cpp
@@ -890,25 +890,15 @@ bool GHOST_SystemWin32::processNDOF(RAWINPUT const &raw)
 	// send motion. Mark as 'sent' so motion will always get dispatched.
 	eventSent = true;
 
-#if defined(_MSC_VER) || defined(FREE_WINDOWS64)
+#if defined(_MSC_VER)
 	// using Microsoft compiler & header files
 	// they invented the RawInput API, so this version is (probably) correct.
-	// MinGW64 also works fine with this
 	BYTE const *data = raw.data.hid.bRawData;
 	// struct RAWHID {
 	// DWORD dwSizeHid;
 	// DWORD dwCount;
 	// BYTE  bRawData[1];
 	// };
-#else
-	// MinGW's definition (below) doesn't agree, so we need a slight
-	// workaround until it's fixed
-	BYTE const *data = &raw.data.hid.bRawData;
-	// struct RAWHID {
-	// DWORD dwSizeHid;
-	// DWORD dwCount;
-	// BYTE bRawData; // <== isn't this s'posed to be a BYTE*?
-	// };
 #endif
 
 	BYTE packetType = data[0];