added a replacement inet_aton() for systems that don't have it.

thanks to Dave for pointing this out.

configure.in

@@ -53,7 +53,7 @@ AC_FUNC_UTIME_NULL
 AC_CHECK_FUNCS(waitpid wait4 getcwd strdup strerror chown chmod mknod)
 AC_CHECK_FUNCS(fchmod fstat strchr readlink link utime utimes strftime)
 AC_CHECK_FUNCS(memmove lchown vsnprintf snprintf setsid glob strpbrk)
-AC_CHECK_FUNCS(strlcat strlcpy)
+AC_CHECK_FUNCS(strlcat strlcpy inet_aton)
 
 AC_CACHE_CHECK([for working fnmatch],rsync_cv_HAVE_FNMATCH,[
 AC_TRY_RUN([#include <fnmatch.h>

lib/compat.c

@@ -145,3 +145,19 @@
 	return ret;
 }
 #endif
+
+#ifndef HAVE_INET_ATON
+ int inet_aton(const char *cp, struct in_addr *inp)
+{
+	if (strcmp(cp, "255.255.255.255") == 0) {
+		inp->s_addr = (unsigned) -1;
+		return 1;
+	}
+
+	inp->s_addr = inet_addr(cp);
+	if (inp->s_addr == (unsigned) -1) {
+		return 0;
+	}
+	return 1;
+}
+#endif