Eliminate warnings from GCC when using maximal compiler warning levels

Author: ruven

ChangeLog

@@ -1,3 +1,7 @@
+28/12/2025:
+	- Eliminate warnings from GCC when using maximal compiler warning levels
+
+
 22/12/2025:
 	- Update OpenJPEG and Kakadu decoders to store real resolution sizes rather than try to mimic TIFF.
 	  View::getResolution() also updated to take a vector of existing resolution sizes to determine resolution

src/KakaduImage.h

@@ -34,9 +34,16 @@
 
 #include "IIPImage.h"
 
+// Eliminate gcc compiler warnings caused by Kakadu library
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#pragma GCC diagnostic ignored "-Wdeprecated-copy"
+#pragma GCC diagnostic ignored "-Wctor-dtor-privacy"
+#pragma GCC diagnostic ignored "-Woverloaded-virtual="
 #include <jpx.h>
 #include <jp2.h>
 #include <kdu_stripe_decompressor.h>
+#pragma GCC diagnostic pop
 #include <fstream>
 
 #define TILESIZE 256

src/View.cc

@@ -33,7 +33,7 @@ void View::calculateResolution( const std::vector<unsigned int>& dimensions,
   unsigned int rs = (requested_size<min_size) ? min_size : requested_size;
 
   // Find the resolution level closest but higher than the requested size
-  for( j=0; j<max_resolutions; j++ ){
+  for( j=0; j<(int)max_resolutions; j++ ){
     if( dimensions[j] < rs ) break;
   }
 

src/Writer.h

@@ -166,7 +166,7 @@ class FileWriter {
       @return number of bytes written
    */
   int putStr( const char* msg, int len ){
-    return fwrite( (void*) msg, sizeof(char), len, out );
+    return fwrite( (const void*) msg, sizeof(char), len, out );
   };
 
   /// Write out a string using puts()