File fix-spch-process.patch of Package icmake

Index: icmake-13.00.01/icmake/spch/process/spch.cc
===================================================================
--- icmake-13.00.01.orig/icmake/spch/process/spch.cc
+++ icmake-13.00.01/icmake/spch/process/spch.cc
@@ -10,7 +10,10 @@ int Process::spch() const
     ofstream out = Exception::factory<ofstream>( d_options.spch() );
 
     for (string const &line: StringSet{ Classes{ d_options }.readClasses() })
-        out << "#include \"" << line << "\"\n";
+    {
+        if (Tools::exists(line))
+            out << "#include \"" + line + "\"\n";
+    }
 
     return 0;