diff --git a/modules/calib3d/perf/perf_precomp.hpp b/modules/calib3d/perf/perf_precomp.hpp
index ce79542722..b13bd664c8 100644
--- a/modules/calib3d/perf/perf_precomp.hpp
+++ b/modules/calib3d/perf/perf_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_PERF_PRECOMP_HPP__
diff --git a/modules/calib3d/test/test_precomp.hpp b/modules/calib3d/test/test_precomp.hpp
index 62d876ffc9..a95fc1cdc5 100644
--- a/modules/calib3d/test/test_precomp.hpp
+++ b/modules/calib3d/test/test_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__
diff --git a/modules/contrib/src/rgbdodometry.cpp b/modules/contrib/src/rgbdodometry.cpp
index 0ea8d18b4c..78a5072245 100644
--- a/modules/contrib/src/rgbdodometry.cpp
+++ b/modules/contrib/src/rgbdodometry.cpp
@@ -40,6 +40,8 @@
 //
 //M*/
 
+#include "precomp.hpp"
+
 #define SHOW_DEBUG_IMAGES 0
 
 #include "opencv2/core/core.hpp"
@@ -49,12 +51,11 @@
 #  include "opencv2/highgui/highgui.hpp"
 #endif
 
-#include "precomp.hpp"
-
 #include <iostream>
+#include <limits>
 
+#include "opencv2/core/internal.hpp"
 #if defined(HAVE_EIGEN) && EIGEN_WORLD_VERSION == 3
-#  include <Eigen/Core>
 #  ifdef ANDROID
      template <typename Scalar> Scalar log2(Scalar v) { using std::log; return log(v)/log(Scalar(2)); }
 #  endif
@@ -62,8 +63,6 @@
 #  include <Eigen/Dense>
 #endif
 
-#include <limits>
-
 using namespace cv;
 
 inline static
diff --git a/modules/contrib/test/test_precomp.hpp b/modules/contrib/test/test_precomp.hpp
index f9cbc917c5..03e1cfe29d 100644
--- a/modules/contrib/test/test_precomp.hpp
+++ b/modules/contrib/test/test_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__
diff --git a/modules/core/include/opencv2/core/eigen.hpp b/modules/core/include/opencv2/core/eigen.hpp
index ea47e8b230..3051486ea9 100644
--- a/modules/core/include/opencv2/core/eigen.hpp
+++ b/modules/core/include/opencv2/core/eigen.hpp
@@ -73,7 +73,7 @@ void eigen2cv( const Eigen::Matrix<_Tp, _rows, _cols, _options, _maxRows, _maxCo
         _src.copyTo(dst);
     }
 }
-    
+
 template<typename _Tp, int _rows, int _cols, int _options, int _maxRows, int _maxCols>
 void cv2eigen( const Mat& src,
                Eigen::Matrix<_Tp, _rows, _cols, _options, _maxRows, _maxCols>& dst )
@@ -132,14 +132,14 @@ void cv2eigen( const Mat& src,
     }
 }
 
-    
+
 template<typename _Tp>
 void cv2eigen( const Mat& src,
                Eigen::Matrix<_Tp, Eigen::Dynamic, 1>& dst )
 {
     CV_Assert(src.cols == 1);
     dst.resize(src.rows);
-    
+
     if( !(dst.Flags & Eigen::RowMajorBit) )
     {
         Mat _dst(src.cols, src.rows, DataType<_Tp>::type,
@@ -183,8 +183,8 @@ void cv2eigen( const Mat& src,
         src.convertTo(_dst, _dst.type());
         CV_DbgAssert(_dst.data == (uchar*)dst.data());
     }
-}                     
-              
+}
+
 }
 
 #endif
diff --git a/modules/core/include/opencv2/core/internal.hpp b/modules/core/include/opencv2/core/internal.hpp
index 39f8292dca..8a66e1135c 100644
--- a/modules/core/include/opencv2/core/internal.hpp
+++ b/modules/core/include/opencv2/core/internal.hpp
@@ -156,6 +156,9 @@ CV_INLINE IppiSize ippiSize(int width, int height)
 #endif
 
 #ifdef HAVE_EIGEN
+#  if defined __GNUC__ && defined __APPLE__
+#    pragma GCC diagnostic ignored "-Wshadow"
+#  endif
 #  include <Eigen/Core>
 #  include "opencv2/core/eigen.hpp"
 #endif
diff --git a/modules/core/perf/perf_precomp.hpp b/modules/core/perf/perf_precomp.hpp
index 22a4abdd9d..184e84bc40 100644
--- a/modules/core/perf/perf_precomp.hpp
+++ b/modules/core/perf/perf_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_PERF_PRECOMP_HPP__
diff --git a/modules/core/test/test_precomp.hpp b/modules/core/test/test_precomp.hpp
index f00212ff4f..1326195a51 100644
--- a/modules/core/test/test_precomp.hpp
+++ b/modules/core/test/test_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__
diff --git a/modules/features2d/perf/perf_precomp.hpp b/modules/features2d/perf/perf_precomp.hpp
index b8608bf9a9..286852b546 100644
--- a/modules/features2d/perf/perf_precomp.hpp
+++ b/modules/features2d/perf/perf_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_PERF_PRECOMP_HPP__
diff --git a/modules/features2d/src/matchers.cpp b/modules/features2d/src/matchers.cpp
index f1a97dc772..d2f71d0038 100755
--- a/modules/features2d/src/matchers.cpp
+++ b/modules/features2d/src/matchers.cpp
@@ -41,6 +41,7 @@
 
 #include "precomp.hpp"
 
+#include "opencv2/core/internal.hpp"
 #if defined(HAVE_EIGEN) && EIGEN_WORLD_VERSION == 2
 #include <Eigen/Array>
 #endif
diff --git a/modules/features2d/test/test_precomp.hpp b/modules/features2d/test/test_precomp.hpp
index 29be5d4e27..e2daba111e 100644
--- a/modules/features2d/test/test_precomp.hpp
+++ b/modules/features2d/test/test_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__
diff --git a/modules/gpu/perf/perf_precomp.hpp b/modules/gpu/perf/perf_precomp.hpp
index b907777294..19608bde10 100644
--- a/modules/gpu/perf/perf_precomp.hpp
+++ b/modules/gpu/perf/perf_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_PERF_PRECOMP_HPP__
diff --git a/modules/gpu/perf_cpu/perf_cpu_precomp.hpp b/modules/gpu/perf_cpu/perf_cpu_precomp.hpp
index b755abbf19..12680c7a02 100644
--- a/modules/gpu/perf_cpu/perf_cpu_precomp.hpp
+++ b/modules/gpu/perf_cpu/perf_cpu_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_PERF_CPU_PRECOMP_HPP__
diff --git a/modules/gpu/test/precomp.hpp b/modules/gpu/test/precomp.hpp
index 5ee13e6bde..cc708b55af 100644
--- a/modules/gpu/test/precomp.hpp
+++ b/modules/gpu/test/precomp.hpp
@@ -41,6 +41,7 @@
 
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__
diff --git a/modules/highgui/perf/perf_precomp.hpp b/modules/highgui/perf/perf_precomp.hpp
index f77c1c4acd..f7fb98da1b 100644
--- a/modules/highgui/perf/perf_precomp.hpp
+++ b/modules/highgui/perf/perf_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_PERF_PRECOMP_HPP__
diff --git a/modules/highgui/test/test_precomp.hpp b/modules/highgui/test/test_precomp.hpp
index 91aff1fbd2..676b80be86 100644
--- a/modules/highgui/test/test_precomp.hpp
+++ b/modules/highgui/test/test_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__
diff --git a/modules/imgproc/perf/perf_precomp.hpp b/modules/imgproc/perf/perf_precomp.hpp
index d85331ee68..57e630051e 100644
--- a/modules/imgproc/perf/perf_precomp.hpp
+++ b/modules/imgproc/perf/perf_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_PERF_PRECOMP_HPP__
diff --git a/modules/imgproc/test/test_precomp.hpp b/modules/imgproc/test/test_precomp.hpp
index f58def6686..f83a864550 100644
--- a/modules/imgproc/test/test_precomp.hpp
+++ b/modules/imgproc/test/test_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__
diff --git a/modules/legacy/test/test_precomp.hpp b/modules/legacy/test/test_precomp.hpp
index 54bfe2b718..dd9dd0e7ed 100644
--- a/modules/legacy/test/test_precomp.hpp
+++ b/modules/legacy/test/test_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__
diff --git a/modules/ml/test/test_precomp.hpp b/modules/ml/test/test_precomp.hpp
index 7f820b47d7..8cda65f831 100644
--- a/modules/ml/test/test_precomp.hpp
+++ b/modules/ml/test/test_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__
diff --git a/modules/nonfree/perf/perf_precomp.hpp b/modules/nonfree/perf/perf_precomp.hpp
index 66eea25995..62b601e95f 100644
--- a/modules/nonfree/perf/perf_precomp.hpp
+++ b/modules/nonfree/perf/perf_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_PERF_PRECOMP_HPP__
diff --git a/modules/nonfree/test/test_precomp.hpp b/modules/nonfree/test/test_precomp.hpp
index ac4ce4b0ef..39ac7ecdeb 100644
--- a/modules/nonfree/test/test_precomp.hpp
+++ b/modules/nonfree/test/test_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__
diff --git a/modules/objdetect/perf/perf_precomp.hpp b/modules/objdetect/perf/perf_precomp.hpp
index 2682e1c206..234cb83a39 100644
--- a/modules/objdetect/perf/perf_precomp.hpp
+++ b/modules/objdetect/perf/perf_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_PERF_PRECOMP_HPP__
diff --git a/modules/objdetect/test/test_precomp.hpp b/modules/objdetect/test/test_precomp.hpp
index c7bd0e340f..041fa24c5f 100644
--- a/modules/objdetect/test/test_precomp.hpp
+++ b/modules/objdetect/test/test_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__
diff --git a/modules/photo/perf/perf_precomp.hpp b/modules/photo/perf/perf_precomp.hpp
index 44ccb09861..49ab24809b 100644
--- a/modules/photo/perf/perf_precomp.hpp
+++ b/modules/photo/perf/perf_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_PERF_PRECOMP_HPP__
diff --git a/modules/photo/test/test_precomp.hpp b/modules/photo/test/test_precomp.hpp
index 6f96e4ac36..4496ac889d 100644
--- a/modules/photo/test/test_precomp.hpp
+++ b/modules/photo/test/test_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__
diff --git a/modules/stitching/perf/perf_precomp.hpp b/modules/stitching/perf/perf_precomp.hpp
index c8d326ef4f..dddeb07caa 100644
--- a/modules/stitching/perf/perf_precomp.hpp
+++ b/modules/stitching/perf/perf_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_PERF_PRECOMP_HPP__
diff --git a/modules/stitching/test/test_precomp.hpp b/modules/stitching/test/test_precomp.hpp
index 4d3bd230fa..7ad654c3a3 100644
--- a/modules/stitching/test/test_precomp.hpp
+++ b/modules/stitching/test/test_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__
diff --git a/modules/video/perf/perf_precomp.hpp b/modules/video/perf/perf_precomp.hpp
index 4082791419..18f4144695 100644
--- a/modules/video/perf/perf_precomp.hpp
+++ b/modules/video/perf/perf_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_VIDEO_PRECOMP_HPP__
diff --git a/modules/video/test/test_precomp.hpp b/modules/video/test/test_precomp.hpp
index e39c6f8113..bef6bf6654 100644
--- a/modules/video/test/test_precomp.hpp
+++ b/modules/video/test/test_precomp.hpp
@@ -1,5 +1,6 @@
 #ifdef __GNUC__
 #  pragma GCC diagnostic ignored "-Wmissing-declarations"
+#  pragma GCC diagnostic ignored "-Wmissing-prototypes" //OSX
 #endif
 
 #ifndef __OPENCV_TEST_PRECOMP_HPP__