--- libsx-2.05/src/dirlist.c.strdup	1999-12-30 08:22:14.000000000 +0100
+++ libsx-2.05/src/dirlist.c	2007-02-15 16:15:22.000000000 +0100
@@ -32,7 +32,9 @@
 #include <sys/param.h>
 #include <sys/stat.h>
 
+#ifndef strdup
 extern char *strdup(char *str);
+#endif
 extern char _FreqFilter[84];
 extern int view_dir, view_pt;
 
--- libsx-2.05/src/freq.c.strdup	2007-02-15 16:16:18.000000000 +0100
+++ libsx-2.05/src/freq.c	2007-02-15 16:16:48.000000000 +0100
@@ -60,8 +60,9 @@
  * in the butt.  Why on earth isn't strdup() in the POSIX standard
  * but something completely useless like mbstowcs() is?
  */
+#ifndef strdup
 char *strdup(const char *str);
-
+#endif
 
 /*
  * Here's where the real code begins.
--- libsx-2.05/src/dialog.c.strdup	2000-07-23 18:02:11.000000000 +0200
+++ libsx-2.05/src/dialog.c	2007-02-15 16:15:22.000000000 +0100
@@ -247,8 +247,10 @@
 
 void PopdownDialog(Dialog popup, char **answer)
 {
-  char *tmp;
+#ifndef strdup
   extern char *strdup(char *str);
+#endif
+  char *tmp;
   
     if (answer)
      {
--- libsx-2.05/freq/freq.c.strdup	1999-07-04 06:07:13.000000000 +0200
+++ libsx-2.05/freq/freq.c	2007-02-15 16:15:22.000000000 +0100
@@ -56,8 +56,9 @@
  * in the butt.  Why on earth isn't strdup() in the POSIX standard
  * but something completely useless like mbstowcs() is?
  */
+#ifndef strdup
 char *strdup(const char *str);
-
+#endif
 
 /*
  * Here's where the real code begins.