po4a SGML format test fail (cannot gerenate system identifier)

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Hi all.

Log is at <https://pastebin.com/SU1zmq7k>.

I am trying to build 'po4a' from source code from the git repository.

I already installed the 'OpenSP' package.

Thank you in advance for any help.

Jamenson Ferreira Espindula de Almeida Melo
Jaboat=C3=A3o dos Guararapes, Pernambuco, Brazil
GNU/Linux user #166197; LFS ID 24492
Key fingerprint: 234D 1914 4224 7C53 BD13 6855 2AE0 25C0 08A8 6180

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