Clang (and possibly other stricter compilers require that you actually include all of what you use. unlike G++

xybrid/audio/audioengine.h

@@ -6,7 +6,7 @@
 #include <deque>
 #include <unordered_map>
 #include <atomic>
-
+#include <array>
 #include <QIODevice>
 #include <QAudioOutput>
 #include <QSemaphore>

xybrid/data/pattern.h

@@ -7,7 +7,7 @@
 #include <list>
 #include <vector>
 #include <string>
-
+#include <array>
 #include <QString>
 
 namespace Xybrid::Data {

xybrid/nodelib/instrumentcore.h

@@ -3,7 +3,7 @@
 #include <memory>
 #include <functional>
 #include <unordered_map>
-
+#include <array>
 #include "nodelib/basics.h"
 
 #include "data/node.h"

xybrid/nodelib/resampler.cpp

@@ -3,6 +3,7 @@ using namespace Xybrid::NodeLib;
 
 #include <cmath>
 #include <iostream>
+#include <array>
 
 namespace {
     const constexpr double PI = 3.141592653589793238462643383279502884197169399375105820974;