diff --git a/Common/StringUtils.cpp b/Common/StringUtils.cpp
index b266c3228e7d68d10c1add744a453c4b6d80371c..79a9e0ab1af6123caebb453b163c8602c02b81da 100644
--- a/Common/StringUtils.cpp
+++ b/Common/StringUtils.cpp
@@ -3,6 +3,7 @@
 // See the LICENSE.txt file for license information. Please report all
 // bugs and problems to <gmsh@geuz.org>.
 
+#include <stdio.h>
 #if defined(__CYGWIN__)
 #include <sys/cygwin.h>
 #endif
diff --git a/Fltk/aboutWindow.cpp b/Fltk/aboutWindow.cpp
index f2b4fb718f61cd3ce327355be0f3be964313e0be..44affa875c399e2d426d233d274c091ac2d9ae0d 100644
--- a/Fltk/aboutWindow.cpp
+++ b/Fltk/aboutWindow.cpp
@@ -3,6 +3,7 @@
 // See the LICENSE.txt file for license information. Please report all
 // bugs and problems to <gmsh@geuz.org>.
 
+#include <stdio.h>
 #include <FL/Fl_Browser.H>
 #include <FL/Fl_Box.H>
 #include <FL/Fl_Button.H>
diff --git a/Mesh/meshGFaceDelaunayInsertion.cpp b/Mesh/meshGFaceDelaunayInsertion.cpp
index 70858d03b9388f347d3362481073b43dbdebc405..8e65c3f09eaaac176b425311e48bd19f992dd5fb 100644
--- a/Mesh/meshGFaceDelaunayInsertion.cpp
+++ b/Mesh/meshGFaceDelaunayInsertion.cpp
@@ -675,7 +675,7 @@ void gmshBowyerWatsonFrontal(GFace *gf)
   std::vector<double> vSizes, vSizesBGM, Us, Vs;
   std::vector<SMetric3> vMetricsBGM;
 
-  testTensor();
+  //testTensor();
 
   buildMeshGenerationDataStructures(gf, AllTris, vSizes, vSizesBGM, Us, Vs);
 
diff --git a/Post/PViewDataIO.cpp b/Post/PViewDataIO.cpp
index 3cf6cbdf175faeda739e627b13bf2367a1940eab..822be143aff0fa905c07157aaab725a1d49aacd4 100644
--- a/Post/PViewDataIO.cpp
+++ b/Post/PViewDataIO.cpp
@@ -3,6 +3,7 @@
 // See the LICENSE.txt file for license information. Please report all
 // bugs and problems to <gmsh@geuz.org>.
 
+#include <stdio.h>
 #include <string.h>
 #include "GmshMessage.h"
 #include "Numeric.h"
diff --git a/contrib/Chaco/main/Gmsh_printf.cpp b/contrib/Chaco/main/Gmsh_printf.cpp
index 666d2bf66987d3b9f2a459ba37d64e8f695608e7..7b09649d2b5ad0bda4ad18e998660def2c915ea7 100644
--- a/contrib/Chaco/main/Gmsh_printf.cpp
+++ b/contrib/Chaco/main/Gmsh_printf.cpp
@@ -3,6 +3,7 @@
 // See the LICENSE.txt file for license information. Please report all
 // bugs and problems to <gmsh@geuz.org>.
 
+#include <cstdio>
 #include <cstring>
 #include "GmshMessage.h"