Fixed compile warning from redefined macro.

modules/imgcodecs/CMakeLists.txt

@@ -51,7 +51,6 @@ if(HAVE_OPENEXR)
 endif()
 
 if(HAVE_GDAL)
-  add_definitions(-DHAVE_GDAL)
   include_directories(SYSTEM ${GDAL_INCLUDE_DIR})
   list(APPEND GRFMT_LIBS ${GDAL_LIBRARY})
 endif()

modules/imgcodecs/src/grfmt_gdal.cpp

@@ -39,10 +39,16 @@
 //
 //M*/
 #include "precomp.hpp"
-#include "grfmt_gdal.hpp"
+
+// GDAL Macros
+#include "cvconfig.h"
 
 #ifdef HAVE_GDAL
 
+// Our Header
+#include "grfmt_gdal.hpp"
+
+
 /// C++ Standard Libraries
 #include <iostream>
 #include <stdexcept>
@@ -196,7 +202,10 @@ GdalDecoder::~GdalDecoder(){
 /**
  * Convert data range
 */
-double range_cast( const GDALDataType& gdalType, const int& cvDepth, const double& value ){
+double range_cast( const GDALDataType& gdalType,
+                   const int& cvDepth,
+                   const double& value )
+{
 
     // uint8 -> uint8
     if( gdalType == GDT_Byte && cvDepth == CV_8U ){

modules/imgcodecs/src/grfmt_gdal.hpp

@@ -42,16 +42,15 @@
 #ifndef __GRFMT_GDAL_HPP__
 #define __GRFMT_GDAL_HPP__
 
+/// OpenCV FMT Base Type
+#include "grfmt_base.hpp"
+
 /// Macro to make sure we specified GDAL in CMake
 #ifdef HAVE_GDAL
 
 /// C++ Libraries
 #include <iostream>
 
-/// OpenCV Libraries
-#include "grfmt_base.hpp"
-#include "precomp.hpp"
-
 /// Geospatial Data Abstraction Library
 #include <gdal/cpl_conv.h>
 #include <gdal/gdal_priv.h>
@@ -61,6 +60,13 @@
 /// Start of CV Namespace
 namespace cv {
 
+/**
+ * Convert GDAL Pixel Range to OpenCV Pixel Range
+*/
+double range_cast( const GDALDataType& gdalType,
+                   const int& cvDepth,
+                   const double& value );
+
 /**
  * Convert GDAL Palette Interpretation to OpenCV Pixel Type
 */