Possible bug in comparing architectures?

[Davide Liessi]

Dear developers,
in the log [1] I read

Error: Cannot install py27-poppler-qt5 for the arch 'powerpc' because
Error: its dependency python27 does not build for the required arch by default
Error: and the configured universal_archs 'i386 ppc' are not sufficient.
Error: mportdepends py-poppler-qt5 activate failed.

Shouldn't 'powerpc' and 'ppc' be synonyms?
Is this a bug in base?

Best wishes.
Davide


[1] https://build.macports.org/builders/ports-10.5_ppc_legacy-builder/builds/48562/steps/install-dependencies/logs/stdio