Maintenenace: fix several compiler warnings in C code

Due to incorrect handling of C source files, the typical compiler warning
settings had not been applied to C code, but instead only to C++ code.

After fixing the build system setting, this patch fixed most of the
compiler warnings in C code.

other fixes:
- GLXApplicationExample: fixed compiler warnings
- CMake: fixed several compiler warnings
- LayerManagerBase: fix compiler warning
- LayerManagerUtils: suppress DLT macro related warnings, if DLT is enabled
- TextureBinders: fixed compiler warning

Signed-off-by: Timo Lotterbach <timo.lotterbach@bmw-carit.de>

2 files changed, 7 insertions, 2 deletions

diff --git a/LayerManagerUtils/src/Bitmap.cpp b/LayerManagerUtils/src/Bitmap.cpp
index 253ba2e..fcc1d5d 100644
--- a/LayerManagerUtils/src/Bitmap.cpp
+++ b/LayerManagerUtils/src/Bitmap.cpp
@@ -74,8 +74,8 @@ void writeBitmap(std::string FileName, char* imagedataRGB, int width, int height
     header.color2 = 0;
 
     // make sure parent directory exists
-    uint currentPos = 0;
-    uint lastPos = FileName.find_first_of("/",currentPos);
+    std::size_t currentPos = 0;
+    std::size_t lastPos = FileName.find_first_of("/",currentPos);
     while (lastPos != std::string::npos)
     {
         std::string directory = FileName.substr(0,lastPos);
diff --git a/LayerManagerUtils/src/Log.cpp b/LayerManagerUtils/src/Log.cpp
index e2997f3..1575559 100644
--- a/LayerManagerUtils/src/Log.cpp
+++ b/LayerManagerUtils/src/Log.cpp
@@ -229,6 +229,11 @@ void Log::unregisterDiagnosticInjectionCallback( unsigned int module_id )
 
 
 #ifdef WITH_DLT    
+
+// DLT macros will fail using -pedantic with
+// warning: ISO C++ forbids braced-groups within expressions
+#pragma GCC diagnostic ignored "-pedantic"
+
 void Log::LogToDltDaemon(LogContext logContext, LOG_MODES logMode, const std::string& moduleName, const std::basic_string<char>& output)
 {