-Source0: http://www.amelek.gda.pl/libc/avr-libc-%{version}.tar.gz
-BuildPrereq: crossavr-binutils, crossavr-gcc
+Source0: http://savannah.nongnu.org/download/avr-libc/avr-libc-%{version}.tar.bz2
+# Source0-md5: b335df54d54ad47570f3e1e6794b4532
+Source1: http://savannah.nongnu.org/download/avr-libc/avr-libc-user-manual-%{version}.tar.bz2
+# Source1-md5: f8cbe7fd5c86ff63a3abb8cc787fc3b1
+URL: http://www.nongnu.org/avr-libc/
+BuildRequires: crossavr-binutils >= 2.14
+BuildRequires: crossavr-gcc >= 3.3
+Requires: crossavr-gcc >= 3.3