Comment # 1 on bug 37117 from Matt Turner

I can only find fd3ed34a2070fca3804baf54ece40d0bc2666226 which touched
LT_PREREQ, and it added

LT_PREREQ([2.2])

not

LT_PREREQ(2.2)

so I can't guess what the problem you saw was. Given that 18 months have passed
without any more updates to this bug or reports of it happening to other
people, I'm going to close it. Reopen if you are able to reproduce it still.