It didn't at the time (10/2003). The changes file says this was fixed in 0.22 (01/2004), which I think I noticed a month or two after that. It has this interesting comment...
AIX also massages some very naughty bits (MakeMaker macro variables)
in $Config{lddlflags} that should never have been put there, but
alas, they're there, so we find & resolve them.
My email at the time says these were getting passed to the linker without
being interpolated (during a 'make test' of Module::Build). So either
it's an AIX/perl issue or Module::Build was making assumptions it
shouldn't have.
