XML_SetReparseDeferralEnabled is backported to Debian 11
Use a CMake compile test to detect whether XML_SetReparseDeferralEnabled() is availabe.
Debian 11 has expat 2.4 but with XML_SetReparseDeferralEnabled backported.
Use a CMake compile test to detect whether XML_SetReparseDeferralEnabled() is availabe.
Debian 11 has expat 2.4 but with XML_SetReparseDeferralEnabled backported.