diff -urN Ice-3.0.0/src/Ice/Application.cpp Ice-3.0.0.patched.clean/src/Ice/Application.cpp
--- Ice-3.0.0/src/Ice/Application.cpp	2005-11-15 16:47:57 +0100
+++ Ice-3.0.0.patched.clean/src/Ice/Application.cpp	2006-02-07 09:45:57 +0100
@@ -50,6 +50,13 @@
 #   include <csignal>
 #endif
 
+// Per Tru64 cc man page: Use the following statement to uniquely identify Tru64 UNIX
+// Compaq C++ defines signal() as a macro, causing problems with the _condVar->signal()
+// statement, which the compiler for some reason replaces by the macro.
+#if defined (__digital__) && defined (__unix__)
+#undef signal
+#endif
+
 //
 // CtrlCHandler callbacks.
 //