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

5 files changed, 4 insertions, 14 deletions

diff --git a/source/gameengine/Expressions/intern/HashedPtr.cpp b/source/gameengine/Expressions/intern/HashedPtr.cpp
index 005ac16b231..11d9482f993 100644
--- a/source/gameengine/Expressions/intern/HashedPtr.cpp
+++ b/source/gameengine/Expressions/intern/HashedPtr.cpp
@@ -40,10 +40,8 @@ CHashedPtr::CHashedPtr(void* val) : m_valptr(val)
 
 unsigned int CHashedPtr::hash() const
 {
-#if defined(_WIN64) && !defined(FREE_WINDOWS64)
+#if defined(_WIN64)
 	unsigned __int64 key = (unsigned __int64)m_valptr;
-#elif defined(FREE_WINDOWS64)
-	unsigned long long key = (unsigned long long)m_valptr;
 #else
 	unsigned long key = (unsigned long)m_valptr;
 #endif
diff --git a/source/gameengine/Expressions/intern/InputParser.cpp b/source/gameengine/Expressions/intern/InputParser.cpp
index e8cc7fba284..583d8da63cb 100644
--- a/source/gameengine/Expressions/intern/InputParser.cpp
+++ b/source/gameengine/Expressions/intern/InputParser.cpp
@@ -37,7 +37,7 @@
 // cool things like (IF(LOD==1,CCurvedValue,IF(LOD==2,CCurvedValue2)) etc...
 #include "EXP_IfExpr.h"
 
-#if (defined(WIN32) || defined(WIN64)) && !defined(FREE_WINDOWS)
+#if defined(WIN32) || defined(WIN64)
 #define strcasecmp	_stricmp
 
 #ifndef strtoll
diff --git a/source/gameengine/Ketsji/KX_IPO_SGController.cpp b/source/gameengine/Ketsji/KX_IPO_SGController.cpp
index f3947fdd710..be1a4b4ef3a 100644
--- a/source/gameengine/Ketsji/KX_IPO_SGController.cpp
+++ b/source/gameengine/Ketsji/KX_IPO_SGController.cpp
@@ -31,10 +31,8 @@
  */
 
 
-#if defined(_WIN64) && !defined(FREE_WINDOWS64)
+#if defined(_WIN64)
 typedef unsigned __int64 uint_ptr;
-#elif defined(FREE_WINDOWS64)
-typedef unsigned long long uint_ptr;
 #else
 typedef unsigned long uint_ptr;
 #endif
diff --git a/source/gameengine/Ketsji/KX_KetsjiEngine.cpp b/source/gameengine/Ketsji/KX_KetsjiEngine.cpp
index b0a8e376eb6..d82a0fd533b 100644
--- a/source/gameengine/Ketsji/KX_KetsjiEngine.cpp
+++ b/source/gameengine/Ketsji/KX_KetsjiEngine.cpp
@@ -80,12 +80,6 @@
 #define DEFAULT_LOGIC_TIC_RATE 60.0
 //#define DEFAULT_PHYSICS_TIC_RATE 60.0
 
-#ifdef FREE_WINDOWS /* XXX mingw64 (gcc 4.7.0) defines a macro for DrawText that translates to DrawTextA. Not good */
-#ifdef DrawText
-#undef DrawText
-#endif
-#endif
-
 const char KX_KetsjiEngine::m_profileLabels[tc_numCategories][15] = {
 	"Physics:",		// tc_physics
 	"Logic:",		// tc_logic
diff --git a/source/gameengine/VideoTexture/ImageBase.cpp b/source/gameengine/VideoTexture/ImageBase.cpp
index 0db1fa293da..b91a312a5d7 100644
--- a/source/gameengine/VideoTexture/ImageBase.cpp
+++ b/source/gameengine/VideoTexture/ImageBase.cpp
@@ -43,7 +43,7 @@ extern "C" {
 
 #include "Exception.h"
 
-#if (defined(WIN32) || defined(WIN64)) && !defined(FREE_WINDOWS)
+#if (defined(WIN32) || defined(WIN64))
 #define strcasecmp	_stricmp
 #endif