Seems that citi.umich.edu is not available anymore. >>> libnfsidmap 0.25 Downloading --2021-05-25 13:20:26-- http://www.citi.umich.edu/projects/nfsv4/linux/libnfsidmap/libnfsidmap-0.25.tar.gz Resolving www.citi.umich.edu (www.citi.umich.edu)... 141.212.112.111, 2607:f018:600:2:f66d:4ff:fe50:8246 Connecting to www.citi.umich.edu (www.citi.umich.edu)|141.212.112.111|:80... connected. HTTP request sent, awaiting response... 403 Forbidden 2021-05-25 13:20:27 ERROR 403: Forbidden. --2021-05-25 13:20:27-- http://sources.buildroot.net/libnfsidmap/libnfsidmap-0.25.tar.gz Resolving sources.buildroot.net (sources.buildroot.net)... 172.67.72.56, 104.26.0.37, 104.26.1.37, ... Connecting to sources.buildroot.net (sources.buildroot.net)|172.67.72.56|:80... connected. HTTP request sent, awaiting response... 404 Not Found 2021-05-25 13:20:27 ERROR 404: Not Found. --2021-05-25 13:20:27-- http://sources.buildroot.net/libnfsidmap-0.25.tar.gz Resolving sources.buildroot.net (sources.buildroot.net)... 104.26.0.37, 104.26.1.37, 172.67.72.56, ... Connecting to sources.buildroot.net (sources.buildroot.net)|104.26.0.37|:80... connected. HTTP request sent, awaiting response... 404 Not Found 2021-05-25 13:20:28 ERROR 404: Not Found. package/pkg-generic.mk:135: recipe for target '/mnt/cn98xx-release-output/build/libnfsidmap-0.25/.stamp_downloaded' failed make[1]: *** [/mnt/cn98xx-release-output/build/libnfsidmap-0.25/.stamp_downloaded] Error 1 Makefile:23: recipe for target '_all' failed make: *** [_all] Error 2 Regards.
There is no libnfsidmap package in buildroot, nor anything resembling it. Please report this issue to whichever fork of buildroot you're using.