diff -Naur xmlppm-0.98.2/src/Args.cpp xmlppm-0.98.2.gcc4/src/Args.cpp
--- xmlppm-0.98.2/src/Args.cpp	2004-11-24 13:02:50.000000000 +0100
+++ xmlppm-0.98.2.gcc4/src/Args.cpp	2006-04-17 17:13:11.000000000 +0200
@@ -40,7 +40,6 @@
   int _setmode (int handle, int mode);
   int _fileno (FILE * stream);
 #endif
-  char *strdup (const char *);
 }
 
 
diff -Naur xmlppm-0.98.2/src/EncodeSax.cpp xmlppm-0.98.2.gcc4/src/EncodeSax.cpp
--- xmlppm-0.98.2/src/EncodeSax.cpp	2004-11-24 13:02:50.000000000 +0100
+++ xmlppm-0.98.2.gcc4/src/EncodeSax.cpp	2006-04-17 17:13:27.000000000 +0200
@@ -39,8 +39,6 @@
 
 char Extbuff[BUFFSIZE];
 
-extern "C" char *strdup (const char *s);
-
 void
 preloadChar (PPM_MODEL * m, xml_state * state)
 {
diff -Naur xmlppm-0.98.2/src/StringArray.cpp xmlppm-0.98.2.gcc4/src/StringArray.cpp
--- xmlppm-0.98.2/src/StringArray.cpp	2004-11-24 13:02:50.000000000 +0100
+++ xmlppm-0.98.2.gcc4/src/StringArray.cpp	2006-04-17 17:15:12.000000000 +0200
@@ -31,8 +31,6 @@
 #include <stdio.h>
 #include <string.h>
 
-extern "C" char *strdup (const char *);
-
 StringArray::StringArray (int size)
 {
   int i;