1 files changed, 5 insertions, 1 deletions
diff --git a/e_os.h b/e_os.h
index 948a8bfd7e..f540d7752e 100644
--- a/e_os.h
+++ b/e_os.h
@@ -404,7 +404,11 @@ extern HINSTANCE _hInstance;
 #endif
 
 #if defined(sun) && !defined(__svr4__) && !defined(__SVR4)
-#define memmove(s1,s2,n) bcopy((s2),(s1),(n))
+# define memmove(s1,s2,n) bcopy((s2),(s1),(n))
+# define strtoul(s,e,b) ((unsigned long int)strtol((s),(e),(b)))
+extern char *sys_errlist[]; extern int sys_nerr;
+#  define strerror(errnum) \
+	(((errnum)<0 || (errnum)>=sys_nerr) ? NULL : sys_errlist[errnum])
 #endif
 
 /***********************************************/