[Openswan Users] Creating RPM files from openswan-2.6.19.tar.gz

[Mitja]

RPMS for openswan 2.4.xx can be simply created this way:
[root at centos:/u/mitja/openswan]$ rpmbuild -ta openswan-2.4.13

But with version 2.6.19 im getting this error?

[root at centos:/u/mitja/openswan]$ rpmbuild -ta openswan-2.6.19.tar.gz
error: line 31: Dependency tokens must begin with alpha-numeric, '_' or
'/': PreReq: gmp %insserv_prereq %fillup_prereq perl

OS: Centos 4.7, i686

Any help appreciated.

Mitja