explicitly include <iostream>

instead of relying on relying that some header includes it...

opm/autodiff/AutoDiffHelpers.hpp

@@ -24,6 +24,8 @@
 #include <opm/core/grid.h>
 #include <opm/core/utility/ErrorMacros.hpp>
 
+#include <iostream>
+
 // -------------------- class HelperOps --------------------
 
 /// Contains vectors and sparse matrices that represent subsets or

opm/autodiff/FullyImplicitBlackoilSolver.cpp

@@ -34,6 +34,7 @@
 
 #include <cassert>
 #include <cmath>
+#include <iostream>
 #include <iomanip>
 
 #define DUMP(foo)                                                       \

opm/autodiff/ImpesTPFAAD.cpp

@@ -26,6 +26,7 @@
 #include <opm/core/linalg/LinearSolverInterface.hpp>
 #include <opm/core/wells.h>
 
+#include <iostream>
 #include <iomanip>
 
 

opm/autodiff/SimulatorCompressibleAd.cpp

@@ -56,6 +56,7 @@
 
 #include <numeric>
 #include <fstream>
+#include <iostream>
 
 
 namespace Opm

opm/autodiff/SimulatorFullyImplicitBlackoil.cpp

@@ -56,6 +56,7 @@
 
 #include <numeric>
 #include <fstream>
+#include <iostream>
 
 
 namespace Opm

opm/autodiff/SimulatorIncompTwophaseAdfi.cpp

@@ -54,6 +54,7 @@
 
 #include <numeric>
 #include <fstream>
+#include <iostream>
 
 
 namespace Opm