I download libxml2 2.9.4 in here, when i ./configure; make, i get following error: the full output is here here is my environment: I try version 2.9.2 and 2.9.3, i get same error, how to compile libxml2 success? Answer I find the solution: in nanohttp.c, the error line: so i can disable ipv6 to don’t compile this block code. I