ifdef'd gcc diagnostic pragma's to quiet msvc and others.

source/blender/blenkernel/intern/collision.c

@@ -198,8 +198,10 @@ static void collision_compute_barycentric ( float pv[3], float p1[3], float p2[3
 	w3[0] = 1.0f - w1[0] - w2[0];
 }
 
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wdouble-promotion"
+#ifdef __GNUC__
+#  pragma GCC diagnostic push
+#  pragma GCC diagnostic ignored "-Wdouble-promotion"
+#endif
 
 DO_INLINE void collision_interpolateOnTriangle ( float to[3], float v1[3], float v2[3], float v3[3], double w1, double w2, double w3 )
 {
@@ -371,7 +373,9 @@ static int cloth_collision_response_static ( ClothModifierData *clmd, CollisionM
 	return result;
 }
 
-#pragma GCC diagnostic pop
+#ifdef __GNUC__
+#  pragma GCC diagnostic pop
+#endif
 
 //Determines collisions on overlap, collisions are written to collpair[i] and collision+number_collision_found is returned
 static CollPair* cloth_collision(ModifierData *md1, ModifierData *md2,

source/blender/blenkernel/intern/dynamicpaint.c

@@ -86,11 +86,13 @@
 #include "RE_shader_ext.h"
 
 #ifdef _OPENMP
-#include <omp.h>
+#  include <omp.h>
 #endif
 
 /* could enable at some point but for now there are far too many conversions */
-#pragma GCC diagnostic ignored "-Wdouble-promotion"
+#ifdef __GNUC__
+#  pragma GCC diagnostic ignored "-Wdouble-promotion"
+#endif
 
 /* precalculated gaussian factors for 5x super sampling	*/
 static float gaussianFactors[5] = {0.996849f,

source/blender/imbuf/intern/util.c

@@ -233,8 +233,10 @@ static int isqtime(const char *name)
 #endif
 
 /* BLI_vsnprintf in ffmpeg_log_callback() causes invalid warning */
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wmissing-format-attribute"
+#ifdef __GNUC__
+#  pragma GCC diagnostic push
+#  pragma GCC diagnostic ignored "-Wmissing-format-attribute"
+#endif
 
 static char ffmpeg_last_error[1024];
 
@@ -258,7 +260,9 @@ static void ffmpeg_log_callback(void *ptr, int level, const char *format, va_lis
 	}
 }
 
-#pragma GCC diagnostic pop
+#ifdef __GNUC__
+#  pragma GCC diagnostic pop
+#endif
 
 void IMB_ffmpeg_init(void)
 {

source/blender/render/intern/source/convertblender.c

@@ -125,7 +125,9 @@
 #define FLT_EPSILON10 1.19209290e-06F
 
 /* could enable at some point but for now there are far too many conversions */
-#pragma GCC diagnostic ignored "-Wdouble-promotion"
+#ifdef __GNUC__
+#  pragma GCC diagnostic ignored "-Wdouble-promotion"
+#endif
 
 /* ------------------------------------------------------------------------- */
 

source/blender/render/intern/source/shadeoutput.c

@@ -58,7 +58,9 @@
 #include "shading.h" /* own include */
 
 /* could enable at some point but for now there are far too many conversions */
-#pragma GCC diagnostic ignored "-Wdouble-promotion"
+#ifdef __GNUC__
+#  pragma GCC diagnostic ignored "-Wdouble-promotion"
+#endif
 
 /* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
 /* defined in pipeline.c, is hardcopy of active dynamic allocated Render */

source/blender/render/intern/source/zbuf.c

@@ -77,7 +77,9 @@
 #include "zbuf.h"
 
 /* could enable at some point but for now there are far too many conversions */
-#pragma GCC diagnostic ignored "-Wdouble-promotion"
+#ifdef __GNUC__
+#  pragma GCC diagnostic ignored "-Wdouble-promotion"
+#endif
 
 /* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
 /* defined in pipeline.c, is hardcopy of active dynamic allocated Render */