Re: Perf lib sanity tests fail on OSX

[Philippe Blain <levraiphilippeblain@gmail.com>]

Hi Sangeeta,

Le 2020-12-15 à 14:08, Sangeeta a écrit :

> Hey everyone,
>
> The performance test, p0000-perf-lib-sanity.sh[1], is failing on my
> local OSX machine due to an error in the test_export of the foo
> variable. I think the test is failing because it is not able to export
> the `foo` variable using `test_export`.
> [1] https://github.com/git/git/blob/master/t/perf/p0000-perf-lib-sanity.sh#L26

It is not the export per se that fails (that would be very bad news
indeed), it is the shell magic in the 'test_run_perf_' function in
'perf-lib.sh' that uses a non-portable sed(1) invocation:

      set | sed -n "s'"/'/'\\\\''/g"';s/^\\($test_export_\\)/export 
'"'&'"'/p" >test_vars

As you might already know, since macOS has some BSD background/ancestry,
most POSIX utilities are closer to the OpenBSD/FreeBSD versions than to
their GNU/Linux counterparts.

I successfully ran p0000-perf-lib-sanity.sh on my Mac after installing 
the GNU version of sed using Homebrew and making sure to follow the
indications in the 'Caveats' so that the sed from Homebrew is first in
PATH:

      brew install gnu-sed

      export PATH="/usr/local/opt/gnu-sed/libexec/gnubin:$PATH"

      ./p0000-perf-lib-sanity.sh

I do not know sed syntax enough to fix the invocation to make it
portable (nor do I know if it's possible).

I've CC-ed Johannes and Lars since they were involved in the thread you 
mentioned.

> Thanks and Regards,
> Sangeeta

Cheers,

Philippe.

P.S. my usual email setup is broken at the moment so I'm sorry if this 
email is formatted wrong.
P.P.S. and sorry for the re-send.