diff --git a/code/AssetLib/Assjson/cencode.c b/code/AssetLib/Assjson/cencode.c
index 0ed979b01..614a2671f 100644
--- a/code/AssetLib/Assjson/cencode.c
+++ b/code/AssetLib/Assjson/cencode.c
@@ -9,8 +9,10 @@ For details, see http://sourceforge.net/projects/libb64
 
 const int CHARS_PER_LINE = 72;
 
+#ifdef _MSC_VER
 #pragma warning(push)
 #pragma warning(disable : 4244)
+#endif // _MSC_VER
 
 void base64_init_encodestate(base64_encodestate* state_in)
 {
@@ -33,9 +35,9 @@ int base64_encode_block(const char* plaintext_in, int length_in, char* code_out,
 	char* codechar = code_out;
 	char result;
 	char fragment;
-	
+
 	result = state_in->result;
-	
+
 	switch (state_in->step)
 	{
 		while (1)
@@ -74,7 +76,7 @@ int base64_encode_block(const char* plaintext_in, int length_in, char* code_out,
 			*codechar++ = base64_encode_value(result);
 			result  = (fragment & 0x03f) >> 0;
 			*codechar++ = base64_encode_value(result);
-			
+
 			++(state_in->stepcount);
 			if (state_in->stepcount == CHARS_PER_LINE/4)
 			{
@@ -90,7 +92,7 @@ int base64_encode_block(const char* plaintext_in, int length_in, char* code_out,
 int base64_encode_blockend(char* code_out, base64_encodestate* state_in)
 {
 	char* codechar = code_out;
-	
+
 	switch (state_in->step)
 	{
 	case step_B:
@@ -106,8 +108,10 @@ int base64_encode_blockend(char* code_out, base64_encodestate* state_in)
 		break;
 	}
 	*codechar++ = '\n';
-	
+
 	return (int)(codechar - code_out);
 }
 
+#ifdef _MSC_VER
 #pragma warning(pop)
+#endif // _MSC_VER
diff --git a/contrib/Open3DGC/o3dgcSC3DMCDecoder.inl b/contrib/Open3DGC/o3dgcSC3DMCDecoder.inl
index c965fcd50..8bd85f27b 100644
--- a/contrib/Open3DGC/o3dgcSC3DMCDecoder.inl
+++ b/contrib/Open3DGC/o3dgcSC3DMCDecoder.inl
@@ -27,10 +27,10 @@ THE SOFTWARE.
 #include "o3dgcArithmeticCodec.h"
 #include "o3dgcTimer.h"
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 #    pragma warning(push)
 #    pragma warning( disable : 4456)
-#endif // _WIN32
+#endif // _MSC_VER
 
 //#define DEBUG_VERBOSE
 
@@ -852,9 +852,9 @@ namespace o3dgc
     }
 } // namespace o3dgc
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 #    pragma warning( pop )
-#endif // _WIN32
+#endif // _MSC_VER
 
 #endif // O3DGC_SC3DMC_DECODER_INL
 
diff --git a/contrib/Open3DGC/o3dgcSC3DMCEncoder.inl b/contrib/Open3DGC/o3dgcSC3DMCEncoder.inl
index 78d4b3e78..ca1e0ea76 100644
--- a/contrib/Open3DGC/o3dgcSC3DMCEncoder.inl
+++ b/contrib/Open3DGC/o3dgcSC3DMCEncoder.inl
@@ -32,10 +32,10 @@ THE SOFTWARE.
 
 //#define DEBUG_VERBOSE
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 #    pragma warning(push)
 #    pragma warning(disable : 4456)
-#endif // _WIN32
+#endif // _MSC_VER
 
 namespace o3dgc
 {
@@ -927,9 +927,9 @@ namespace o3dgc
     }
 } // namespace o3dgc
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 #    pragma warning(pop)
-#endif // _WIN32
+#endif // _MSC_VER
 
 #endif // O3DGC_SC3DMC_ENCODER_INL
 
diff --git a/contrib/Open3DGC/o3dgcTimer.h b/contrib/Open3DGC/o3dgcTimer.h
index d9a285968..f5ed0c83f 100644
--- a/contrib/Open3DGC/o3dgcTimer.h
+++ b/contrib/Open3DGC/o3dgcTimer.h
@@ -28,7 +28,9 @@ THE SOFTWARE.
 
 #ifdef _WIN32
 /* Thank you, Microsoft, for file WinDef.h with min/max redefinition. */
+#ifndef NOMINMAX
 #define NOMINMAX
+#endif
 #include <windows.h>
 #elif __APPLE__
 #include <mach/clock.h>
diff --git a/contrib/zip/src/zip.c b/contrib/zip/src/zip.c
index 0020df0ed..83e8e2a41 100644
--- a/contrib/zip/src/zip.c
+++ b/contrib/zip/src/zip.c
@@ -18,8 +18,10 @@
 /* Win32, DOS, MSVC, MSVS */
 #include <direct.h>
 
+#ifdef _MSC_VER
 #pragma warning(push)
 #pragma warning(disable : 4706)
+#endif // _MSC_VER
 
 #define MKDIR(DIRNAME) _mkdir(DIRNAME)
 #define STRCLONE(STR) ((STR) ? _strdup(STR) : NULL)
@@ -968,4 +970,6 @@ out:
   return status;
 }
 
+#ifdef _MSC_VER
 #pragma warning(pop)
+#endif // _MSC_VER
diff --git a/include/assimp/mesh.h b/include/assimp/mesh.h
index 4b5af97ce..ec1062837 100644
--- a/include/assimp/mesh.h
+++ b/include/assimp/mesh.h
@@ -52,9 +52,9 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #pragma GCC system_header
 #endif
 
-#ifdef _WIN32
+#ifdef _MSC_VER
 #pragma warning(disable : 4351)
-#endif // _WIN32
+#endif // _MSC_VER
 
 #include <assimp/aabb.h>
 #include <assimp/types.h>
@@ -458,8 +458,8 @@ struct aiAnimMesh {
      */
     unsigned int mNumVertices;
 
-    /** 
-     * Weight of the AnimMesh. 
+    /**
+     * Weight of the AnimMesh.
      */
     float mWeight;
 
@@ -713,8 +713,8 @@ struct aiMesh {
      *  Note! Currently only works with Collada loader.*/
     C_STRUCT aiAnimMesh **mAnimMeshes;
 
-    /** 
-     *  Method of morphing when animeshes are specified. 
+    /**
+     *  Method of morphing when animeshes are specified.
      */
     unsigned int mMethod;
 
diff --git a/samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/TextureLoader.cpp b/samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/TextureLoader.cpp
index c3269d290..01ba343e8 100644
--- a/samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/TextureLoader.cpp
+++ b/samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/TextureLoader.cpp
@@ -31,10 +31,16 @@
 #include <dxgiformat.h>
 #include <assert.h>
 
+#ifdef _MSC_VER
 #pragma warning(push)
 #pragma warning(disable : 4005)
+#endif // _MSC_VER
+
 #include <wincodec.h>
+
+#ifdef _MSC_VER
 #pragma warning(pop)
+#endif // _MSC_VER
 
 #include <memory>
 
diff --git a/samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/TextureLoader.h b/samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/TextureLoader.h
index c2e0b5214..5448daf2a 100644
--- a/samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/TextureLoader.h
+++ b/samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/TextureLoader.h
@@ -31,10 +31,16 @@
 
 #include <d3d11.h>
 
+#ifdef _MSC_VER
 #pragma warning(push)
 #pragma warning(disable : 4005)
+#endif // _MSC_VER
+
 #include <stdint.h>
+
+#ifdef _MSC_VER
 #pragma warning(pop)
+#endif // _MSC_VER
 
 HRESULT CreateWICTextureFromMemory(_In_ ID3D11Device* d3dDevice,
 	_In_opt_ ID3D11DeviceContext* d3dContext,
diff --git a/samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/main.cpp b/samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/main.cpp
index 5cce7c376..02e2b6088 100644
--- a/samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/main.cpp
+++ b/samples/SimpleTexturedDirectx11/SimpleTexturedDirectx11/main.cpp
@@ -25,10 +25,12 @@
 #include "UTFConverter.h"
 #include "SafeRelease.hpp"
 
+#ifdef _MSC_VER
 #pragma comment (lib, "d3d11.lib")
 #pragma comment (lib, "Dxgi.lib")
 #pragma comment(lib,"d3dcompiler.lib")
 #pragma comment (lib, "dxguid.lib")
+#endif // _MSC_VER
 
 using namespace DirectX;
 using namespace AssimpSamples::SharedCode;
diff --git a/samples/SimpleTexturedOpenGL/SimpleTexturedOpenGL/src/model_loading.cpp b/samples/SimpleTexturedOpenGL/SimpleTexturedOpenGL/src/model_loading.cpp
index 806da8f8a..a36c792d4 100644
--- a/samples/SimpleTexturedOpenGL/SimpleTexturedOpenGL/src/model_loading.cpp
+++ b/samples/SimpleTexturedOpenGL/SimpleTexturedOpenGL/src/model_loading.cpp
@@ -18,10 +18,16 @@
 #include <GL/gl.h>
 #include <GL/glu.h>
 
+#ifdef _MSC_VER
 #pragma warning(disable: 4100) // Disable warning 'unreferenced formal parameter'
+#endif // _MSC_VER
+
 #define STB_IMAGE_IMPLEMENTATION
 #include "contrib/stb_image/stb_image.h"
+
+#ifdef _MSC_VER
 #pragma warning(default: 4100) // Enable warning 'unreferenced formal parameter'
+#endif // _MSC_VER
 
 #include <fstream>