Created attachment 901185 [details] cross-x86_64-unknown-linux-gnu-glibc.log.xz Seems to be that it's looking for amd64-specific Linux headers in the host system /usr/include/ which do not exist for arm64.
Created attachment 901186 [details] cross-x86_64-unknown-linux-gnu-info.log
Created attachment 901187 [details] glibc-config.logs.tar.xz