diff --git a/.azuredevops/policies/approvercountpolicy.yml b/.azuredevops/policies/approvercountpolicy.yml
new file mode 100644
index 000000000..a4d0651eb
--- /dev/null
+++ b/.azuredevops/policies/approvercountpolicy.yml
@@ -0,0 +1,20 @@
+name: approver_count
+description: Approver count policy for mscodehub/DirectXTK/DirectXTK repository
+resource: repository
+where: 
+configuration:
+  approverCountPolicySettings:
+    isBlocking: true
+    requireMinimumApproverCount: 1
+    creatorVoteCounts: false
+    allowDownvotes: false
+    sourcePushOptions:
+      resetOnSourcePush: false
+      requireVoteOnLastIteration: true
+      requireVoteOnEachIteration: false
+      resetRejectionsOnSourcePush: false
+    blockLastPusherVote: true
+    branchNames:
+    - refs/heads/release
+    - refs/heads/main
+    displayName: mscodehub/DirectXTK/DirectXTK Approver Count Policy
diff --git a/Audio/SoundCommon.h b/Audio/SoundCommon.h
index 8ae7abd72..7ba3dd984 100644
--- a/Audio/SoundCommon.h
+++ b/Audio/SoundCommon.h
@@ -27,9 +27,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/Audio.h b/Inc/Audio.h
index 1e995dba7..002088cb1 100644
--- a/Inc/Audio.h
+++ b/Inc/Audio.h
@@ -69,9 +69,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/BufferHelpers.h b/Inc/BufferHelpers.h
index d4b435574..781a24e92 100644
--- a/Inc/BufferHelpers.h
+++ b/Inc/BufferHelpers.h
@@ -23,9 +23,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/CommonStates.h b/Inc/CommonStates.h
index 19d4849f1..95c2b0980 100644
--- a/Inc/CommonStates.h
+++ b/Inc/CommonStates.h
@@ -19,9 +19,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/DDSTextureLoader.h b/Inc/DDSTextureLoader.h
index 281d47b8f..ea608244d 100644
--- a/Inc/DDSTextureLoader.h
+++ b/Inc/DDSTextureLoader.h
@@ -27,9 +27,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/DirectXHelpers.h b/Inc/DirectXHelpers.h
index 12a4928f1..99ccffe83 100644
--- a/Inc/DirectXHelpers.h
+++ b/Inc/DirectXHelpers.h
@@ -35,9 +35,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/Effects.h b/Inc/Effects.h
index 264124321..9211b8837 100644
--- a/Inc/Effects.h
+++ b/Inc/Effects.h
@@ -26,9 +26,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/GamePad.h b/Inc/GamePad.h
index 4a5e58d7f..2688cc9a1 100644
--- a/Inc/GamePad.h
+++ b/Inc/GamePad.h
@@ -52,9 +52,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/GeometricPrimitive.h b/Inc/GeometricPrimitive.h
index 38f2ef0ac..5d6f37700 100644
--- a/Inc/GeometricPrimitive.h
+++ b/Inc/GeometricPrimitive.h
@@ -21,9 +21,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/GraphicsMemory.h b/Inc/GraphicsMemory.h
index b936fc388..936b11084 100644
--- a/Inc/GraphicsMemory.h
+++ b/Inc/GraphicsMemory.h
@@ -20,9 +20,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/Keyboard.h b/Inc/Keyboard.h
index a15d4121f..0593e047d 100644
--- a/Inc/Keyboard.h
+++ b/Inc/Keyboard.h
@@ -37,9 +37,17 @@ namespace ABI { namespace Windows { namespace UI { namespace Core { struct ICore
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/Model.h b/Inc/Model.h
index b7cebba3d..6abe9b3a5 100644
--- a/Inc/Model.h
+++ b/Inc/Model.h
@@ -34,9 +34,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/Mouse.h b/Inc/Mouse.h
index 02cc4fca8..db0c1f0be 100644
--- a/Inc/Mouse.h
+++ b/Inc/Mouse.h
@@ -37,9 +37,17 @@ namespace ABI { namespace Windows { namespace UI { namespace Core { struct ICore
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/PostProcess.h b/Inc/PostProcess.h
index 7678f54a7..7d5ce84b1 100644
--- a/Inc/PostProcess.h
+++ b/Inc/PostProcess.h
@@ -23,9 +23,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/PrimitiveBatch.h b/Inc/PrimitiveBatch.h
index 2133aa884..27019f005 100644
--- a/Inc/PrimitiveBatch.h
+++ b/Inc/PrimitiveBatch.h
@@ -23,9 +23,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/ScreenGrab.h b/Inc/ScreenGrab.h
index f8a550ada..de375e707 100644
--- a/Inc/ScreenGrab.h
+++ b/Inc/ScreenGrab.h
@@ -37,9 +37,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/SimpleMath.h b/Inc/SimpleMath.h
index 8d96c670e..daeec9ba9 100644
--- a/Inc/SimpleMath.h
+++ b/Inc/SimpleMath.h
@@ -30,9 +30,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/SpriteBatch.h b/Inc/SpriteBatch.h
index 192eca169..7bdee9203 100644
--- a/Inc/SpriteBatch.h
+++ b/Inc/SpriteBatch.h
@@ -25,9 +25,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/SpriteFont.h b/Inc/SpriteFont.h
index a76bbe20a..e2cfd4cd6 100644
--- a/Inc/SpriteFont.h
+++ b/Inc/SpriteFont.h
@@ -17,9 +17,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/VertexTypes.h b/Inc/VertexTypes.h
index 49c79e753..f4cf15fbf 100644
--- a/Inc/VertexTypes.h
+++ b/Inc/VertexTypes.h
@@ -21,9 +21,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/WICTextureLoader.h b/Inc/WICTextureLoader.h
index d0fdddba2..e40546e5a 100644
--- a/Inc/WICTextureLoader.h
+++ b/Inc/WICTextureLoader.h
@@ -38,9 +38,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif
diff --git a/Inc/XboxDDSTextureLoader.h b/Inc/XboxDDSTextureLoader.h
index 16b028b4b..4e499f19b 100644
--- a/Inc/XboxDDSTextureLoader.h
+++ b/Inc/XboxDDSTextureLoader.h
@@ -28,9 +28,17 @@
 
 #ifndef DIRECTX_TOOLKIT_API
 #ifdef DIRECTX_TOOLKIT_EXPORT
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllexport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllexport)
+#endif
 #elif defined(DIRECTX_TOOLKIT_IMPORT)
+#ifdef __GNUC__
+#define DIRECTX_TOOLKIT_API __attribute__ ((dllimport))
+#else
 #define DIRECTX_TOOLKIT_API __declspec(dllimport)
+#endif
 #else
 #define DIRECTX_TOOLKIT_API
 #endif