--- libsigc++-2.0.18/sigc++/signal.h	2007-08-13 13:18:01.000000000 +0200
+++ libsigc++-2.0.18-devel/sigc++/signal.h	2008-01-16 10:00:46.000000000 +0100
@@ -19,6 +19,12 @@
   //do not allow a typedef to have the same name as a class in the typedef's definition.
   //For Sun Forte CC 5.7 (SUN Workshop 10), comment this out to fix the build.
   #define SIGC_TYPEDEF_REDEFINE_ALLOWED 1
+
+  // gcc-4.3.0 does not allow typedef redefinitions  
+  #if (__GNUC__ >= 4) && (__GNUC_MINOR__ >= 3)
+     #undef SIGC_TYPEDEF_REDEFINE_ALLOWED
+  #endif
+
 #endif
 
 namespace sigc {
--- libsigc++-2.0.18/sigc++/macros/signal.h.m4	2007-08-13 13:17:42.000000000 +0200
+++ libsigc++-2.0.18-devel/sigc++/macros/signal.h.m4	2008-01-16 09:24:37.000000000 +0100
@@ -484,6 +484,12 @@ divert(0)
   //do not allow a typedef to have the same name as a class in the typedef's definition.
   //For Sun Forte CC 5.7 (SUN Workshop 10), comment this out to fix the build.
   #define SIGC_TYPEDEF_REDEFINE_ALLOWED 1
+
+  // gcc-4.3.0 does not allow typedef redefinitions  
+  #if (__GNUC__ >= 4) && (__GNUC_MINOR__ >= 3)
+     #undef SIGC_TYPEDEF_REDEFINE_ALLOWED
+  #endif
+
 #endif
 
 namespace sigc {