nsgml error: Undefined symbol "_ZNK6Origin14asEntityOriginEv"

[Alejandro Pulver]

Hello,

I installed 'docproj-jadetex' to learn how to make Docbook documents (in SGML). When I run 'nsgmls' (texproc/sp) (when doing 'make' on a FreeBSD documentation source, or manually) it outputs the following error:

/libexec/ld-elf.so.1: /usr/local/lib/libstyle.so.1: Undefined symbol "_ZNK6Origin14asEntityOriginEv

How do I fix it?

Thanks and Best Regards,
Ale