Re: chainlint test failing on Linux sparc64

> The thing failing here is chainlint's own self-test, which you don't
> actually need if you're merely building Git. You'd only care about
> chainlint (let alone its self-test) if you're modifying tests or
> creating new ones. You can bypass chainlint altogether by setting
> environment variable GIT_TEST_CHAIN_LINT=0.
> 
> That said, chainlint is just a Perl script, and you can manually run
> the self-test like this:
> 
>     cd t
>     make check-chainlint
> 
> The output you posted is coming from this line in t/Makefile:
> 
>     diff -u '$(CHAINLINTTMP_SQ)'/expect '$(CHAINLINTTMP_SQ)'/actual
> 
> Based upon what you pasted, it looks like the "actual" file has no
> content. That might suggest a problem with this line which immediately
> precedes it:
> 
>     $(CHAINLINT) --emit-all '$(CHAINLINTTMP_SQ)'/tests | \
>         sed -e 's/^[1-9][0-9]* //' >'$(CHAINLINTTMP_SQ)'/actual && \
> 
> "actual" might end up empty if the Perl script isn't emitting anything
> for some reason, or if `sed` isn't emitting anything. Presumably you
> have a working `sed` installed(?), but do you have Perl installed?