Support for the ARM 64 bit CPU architecture (aarch64) was introduced in
autoconf 2.69. xmlsec1 appears to use an earlier version of
autoconf, preventing its being built. This can be fixed in of three ways (In order of preference):
1. Work with upstream to migrate the package to autoconf 2.69.
2. Rerun autoconf or autoreconf in %prep or %build prior to running
3. Apply the patch at http://ausil.fedorapeople.org/aarch64/xmlsec1/xmlsec1-aarch64.patch
which updates config.guess and config.sub to recognize aarch64.
Okay, posted upstream:
but i don't know when a new release will be made,
A new xmlsec1 release has just been made, and seems to incorporate
autoconf 2.69 config files.
I have just built xmlsec1-1.2.19-1.fc20 in rawhide,