--- tcp-wrappers-7.6/percent_m.c
+++ tcp-wrappers-7.6/percent_m.c
@@ -13,7 +13,7 @@
 #include <string.h>
 
 extern int errno;
-#ifndef SYS_ERRLIST_DEFINED
+#if !defined(SYS_ERRLIST_DEFINED) && !defined(HAVE_STRERROR)
 extern char *sys_errlist[];
 extern int sys_nerr;
 #endif
@@ -29,11 +29,15 @@
 
     while (*bp = *cp)
 	if (*cp == '%' && cp[1] == 'm') {
+#ifdef HAVE_STRERROR
+            strcpy(bp, strerror(errno));
+#else
 	    if (errno < sys_nerr && errno > 0) {
 		strcpy(bp, sys_errlist[errno]);
 	    } else {
 		sprintf(bp, "Unknown error %d", errno);
 	    }
+#endif
 	    bp += strlen(bp);
 	    cp += 2;
 	} else {