<pre>
source-nflog.c: In function ‘setnlbufsiz’:
source-nflog.c:365:14: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
     if (size < ntv->nlbufsiz_max) {
              ^
cc1: all warnings being treated as errors
make[3]: *** [source-nflog.o] Error 1
</pre>