compile fixes for debian

contrib/ANN/src/kd_dump.cpp

@@ -33,6 +33,7 @@
 
 #include "kd_tree.h"					// kd-tree declarations
 #include "bd_tree.h"					// bd-tree declarations
+#include <string.h> // for gmsh
 #include <stdlib.h> // for gmsh
 
 using namespace std;					// make std:: available

doc/README.occ

@@ -8,6 +8,10 @@ How to build OpenCascade 6.2 for Gmsh:
   export CC="gcc -mno-cygwin -DWNT=1 -DWIN32 -DHAVE_NO_DLL"
   export CXX="g++ -mno-cygwin -DWNT=1 -DWIN32 -DHAVE_NO_DLL"
 
+- with new versions of gcc, add "-ffriend-injection" to the compiler
+  options (this prevents the "Standard_Transient_Type_ not declared"
+  error)
+
 - go to the ros/ directory and type
 
   ./configure --prefix=/usr/local/opencascade --enable-debug=no