Fix Windows build

source/Makefile.mk

@@ -216,6 +216,9 @@ endif
 ifeq ($(HAVE_QT5),true)
 HAVE_QT=true
 endif
+ifeq ($(WIN32),true)
+HAVE_QT=true
+endif
 
 # --------------------------------------------------------------
 # Set PyQt tools

source/backend/plugin/JucePlugin.cpp

@@ -890,7 +890,7 @@ public:
         }
     }
 
-    bool processSingle(float** const inBuffer, float** const outBuffer, const uint32_t frames)
+    bool processSingle(const float** const inBuffer, float** const outBuffer, const uint32_t frames)
     {
         CARLA_SAFE_ASSERT_RETURN(frames > 0, false);