diff --git a/src/qtgui/advsearch_w.cpp b/src/qtgui/advsearch_w.cpp
index 0310b4a3..f0f9b7e4 100644
--- a/src/qtgui/advsearch_w.cpp
+++ b/src/qtgui/advsearch_w.cpp
@@ -1,5 +1,5 @@
 #ifndef lint
-static char rcsid[] = "@(#$Id: advsearch_w.cpp,v 1.19 2008-05-20 10:08:55 dockes Exp $ (C) 2005 J.F.Dockes";
+static char rcsid[] = "@(#$Id: advsearch_w.cpp,v 1.20 2008-05-21 07:21:37 dockes Exp $ (C) 2005 J.F.Dockes";
 #endif
 /*
  *   This program is free software; you can redistribute it and/or modify
@@ -43,6 +43,7 @@ static char rcsid[] = "@(#$Id: advsearch_w.cpp,v 1.19 2008-05-20 10:08:55 dockes
 #include <list>
 #include <string>
 #include <map>
+#include <algorithm>
 
 #ifndef NO_NAMESPACES
 using std::list;
diff --git a/src/qtgui/confgui/confgui.cpp b/src/qtgui/confgui/confgui.cpp
index 7dde8daa..18cc6509 100644
--- a/src/qtgui/confgui/confgui.cpp
+++ b/src/qtgui/confgui/confgui.cpp
@@ -1,8 +1,9 @@
 #ifndef lint
-static char rcsid[] = "@(#$Id: confgui.cpp,v 1.8 2007-10-25 15:51:02 dockes Exp $ (C) 2005 J.F.Dockes";
+static char rcsid[] = "@(#$Id: confgui.cpp,v 1.9 2008-05-21 07:21:37 dockes Exp $ (C) 2005 J.F.Dockes";
 #endif
 
 #include <stdio.h>
+#include <stdlib.h>
 
 #include <qglobal.h>
 #if QT_VERSION < 0x040000
diff --git a/src/qtgui/confgui/confgui.h b/src/qtgui/confgui/confgui.h
index b0b54f87..96887779 100644
--- a/src/qtgui/confgui/confgui.h
+++ b/src/qtgui/confgui/confgui.h
@@ -1,6 +1,6 @@
 #ifndef _confgui_h_included_
 #define _confgui_h_included_
-/* @(#$Id: confgui.h,v 1.6 2007-10-19 14:31:40 dockes Exp $  (C) 2007 J.F.Dockes */
+/* @(#$Id: confgui.h,v 1.7 2008-05-21 07:21:37 dockes Exp $  (C) 2007 J.F.Dockes */
 /**
  * This file defines a number of simple classes (virtual base: ConfParamW) 
  * which let the user input configuration parameters. 
@@ -22,6 +22,7 @@
  * delete/recreate the widgets in this case as the links are no longer valid).
  */
 #include <string>
+#include <limits.h>
 
 #include <qglobal.h>
 #include <qstring.h>
diff --git a/src/qtgui/preview_w.cpp b/src/qtgui/preview_w.cpp
index b1fae167..6cb2f4e2 100644
--- a/src/qtgui/preview_w.cpp
+++ b/src/qtgui/preview_w.cpp
@@ -1,5 +1,5 @@
 #ifndef lint
-static char rcsid[] = "@(#$Id: preview_w.cpp,v 1.33 2008-05-05 20:24:55 dockes Exp $ (C) 2005 J.F.Dockes";
+static char rcsid[] = "@(#$Id: preview_w.cpp,v 1.34 2008-05-21 07:21:37 dockes Exp $ (C) 2005 J.F.Dockes";
 #endif
 /*
  *   This program is free software; you can redistribute it and/or modify
@@ -18,6 +18,7 @@ static char rcsid[] = "@(#$Id: preview_w.cpp,v 1.33 2008-05-05 20:24:55 dockes E
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 #include <unistd.h>
+#include <stdlib.h>
 #include <time.h>
 #include <sys/stat.h>
 
diff --git a/src/qtgui/reslist.cpp b/src/qtgui/reslist.cpp
index 28eb7eff..07c71d2a 100644
--- a/src/qtgui/reslist.cpp
+++ b/src/qtgui/reslist.cpp
@@ -1,8 +1,9 @@
 #ifndef lint
-static char rcsid[] = "@(#$Id: reslist.cpp,v 1.38 2008-05-05 20:24:55 dockes Exp $ (C) 2005 J.F.Dockes";
+static char rcsid[] = "@(#$Id: reslist.cpp,v 1.39 2008-05-21 07:21:37 dockes Exp $ (C) 2005 J.F.Dockes";
 #endif
 
 #include <time.h>
+#include <stdlib.h>
 
 #include <qapplication.h>
 #include <qvariant.h>
diff --git a/src/utils/idfile.cpp b/src/utils/idfile.cpp
index 9e4814fd..9503a231 100644
--- a/src/utils/idfile.cpp
+++ b/src/utils/idfile.cpp
@@ -1,5 +1,5 @@
 #ifndef lint
-static char rcsid[] = "@(#$Id: idfile.cpp,v 1.7 2008-02-11 10:21:58 dockes Exp $ (C) 2005 J.F.Dockes";
+static char rcsid[] = "@(#$Id: idfile.cpp,v 1.8 2008-05-21 07:21:37 dockes Exp $ (C) 2005 J.F.Dockes";
 #endif
 /*
  *   This program is free software; you can redistribute it and/or modify
@@ -19,6 +19,7 @@ static char rcsid[] = "@(#$Id: idfile.cpp,v 1.7 2008-02-11 10:21:58 dockes Exp $
  */
 #ifndef TEST_IDFILE
 #include <unistd.h> // for access(2)
+#include <stdlib.h>
 #include <ctype.h>
 #include <cstring>