Build with Clang.

--HG--
branch : develop

src/app/app.pro

@@ -84,8 +84,13 @@ TRANSLATIONS += share/translations/valentina.ts \
                 share/translations/valentina_nl.ts
 
 unix {
+    *-g++{
         QMAKE_CXX = ccache g++
     }
+    clang*{
+        QMAKE_CXX = ccache clang++
+    }
+}
 
 CONFIG += precompile_header
 # Precompiled headers (PCH)

src/app/dialogs/app/configdialog.cpp

@@ -80,7 +80,7 @@ ConfigDialog::ConfigDialog(QWidget *parent) :
 //---------------------------------------------------------------------------------------------------------------------
 void ConfigDialog::changePage(QListWidgetItem *current, QListWidgetItem *previous)
 {
-    if (current == false)
+    if (current == nullptr)
     {
         current = previous;
     }

src/libs/qmuparser/qmuparser.pro

@@ -56,9 +56,15 @@ unix {
     target.path = /usr/lib
     INSTALLS += target
 
+    *-g++{
         QMAKE_CXX = ccache g++
     }
 
+    clang*{
+        QMAKE_CXX = ccache clang++
+    }
+}
+
 CONFIG += precompile_header
 # Precompiled headers (PCH)
 PRECOMPILED_HEADER = stable.h

src/libs/qmuparser/qmuparsertoken.h

@@ -298,7 +298,7 @@ public:
     //------------------------------------------------------------------------------
     int GetPri() const
     {
-        if ( m_pCallback.get() == false)
+        if ( m_pCallback.get() == nullptr)
         {
             throw QmuParserError ( ecINTERNAL_ERROR );
         }
@@ -424,7 +424,7 @@ public:
     {
         assert ( m_pCallback.get() );
 
-        if ( m_pCallback->GetAddr() == false)
+        if ( m_pCallback->GetAddr() == nullptr)
         {
             throw QmuParserError ( ecINTERNAL_ERROR );
         }

src/libs/qmuparser/qmuparsertokenreader.cpp

@@ -884,7 +884,7 @@ bool QmuParserTokenReader::IsVarTok ( token_type &a_Tok )
 //---------------------------------------------------------------------------------------------------------------------
 bool QmuParserTokenReader::IsStrVarTok ( token_type &a_Tok )
 {
-    if ( m_pStrVarDef == false || m_pStrVarDef->empty() )
+    if ( m_pStrVarDef == nullptr || m_pStrVarDef->empty() )
     {
         return false;
     }