Fix -Wunused-function GCC warnings

src/app/command_system_information.cpp

@@ -147,7 +147,7 @@ QString toUnicodeHexa(const QChar& ch)
 }
 
 // Helper function returning unicode representation of a QString object in the form "U+NNNNU+PPPP..."
-QString toUnicodeHexa(const QString& str)
+[[maybe_unused]] QString toUnicodeHexa(const QString& str)
 {
     QString strHexa;
     QTextStream ostr(&strHexa);

src/app/main.cpp

@@ -352,7 +352,7 @@ static std::string_view qtTranslate(const TextId& text, int n)
 }
 
 // Helper to query the OpenGL version string
-static std::string queryGlVersionString()
+[[maybe_unused]] static std::string queryGlVersionString()
 {
     QOpenGLContext glContext;
     if (!glContext.create())
@@ -372,7 +372,7 @@ static std::string queryGlVersionString()
 
 // Helper to parse a string containing a semantic version eg "4.6.5 CodeNamed"
 // Note: only major and minor versions are detected
-static QVersionNumber parseSemanticVersionString(std::string_view strVersion)
+[[maybe_unused]] static QVersionNumber parseSemanticVersionString(std::string_view strVersion)
 {
     if (strVersion.empty())
         return {};

src/base/mesh_utils.cpp

@@ -16,10 +16,11 @@ namespace MeshUtils {
 
 namespace {
 
-TColStd_Array1OfReal createArray1OfReal(int count)
+// Helper function to create TColStd_Array1OfReal
+[[maybe_unused]] TColStd_Array1OfReal createArray1OfReal(int count)
 {
     if (count > 0)
-        return TColStd_Array1OfReal(1 , count);
+        return TColStd_Array1OfReal(1, count);
     else
         return TColStd_Array1OfReal();
 }

src/io_assimp/io_assimp_reader.cpp

@@ -78,7 +78,7 @@ bool hasScaleFactor(const aiVector3D& scaling)
            );
 }
 
-bool hasScaleFactor(const aiMatrix4x4& trsf)
+[[maybe_unused]] bool hasScaleFactor(const aiMatrix4x4& trsf)
 {
     const aiVector3D scaling = aiMatrixScaling(trsf);
     return hasScaleFactor(scaling);