Re: Small PATCH: check of 2 Perl modules

13.02.2016 16:04, Michael Paquier :
> On Sat, Feb 13, 2016 at 1:47 PM, Robert Haas <robertmhaas@gmail.com> wrote:
>> On Fri, Feb 12, 2016 at 8:20 AM, Eugene Kazakov
>> <e.kazakov@postgrespro.ru> wrote:
>>> TAP-tests need two Perl modules: Test::More and IPC::Run.
>>>
>>> The patch adds checking of modules in configure.in and configure.
>> Why would we want that?
> I was doubtful at the beginning, but it doesn't hurt to have those
> sanity checks in configure actually. The idea is that when
> --enable-tap-tests is used now we simply error with "Can't locate
> IPC/Run.pm in @INC" when kicking the tests, this check would allow one
> to know if his environment is adapted to run the tests or not before
> compiling anything.
>
> And with this patch, we would fail now with that:
> configure: error: Need Perl IPC::Run module
>
> By the way, the patch given upthread by Eugene is incorrect. To begin
> with, AX_PROG_PERL_MODULES has not been compiled by autoconf and I
> can't believe that it is available on all platforms, for example on
> OSX 10.8 I could not see it. And it is actually here:
> https://www.gnu.org/software/autoconf-archive/ax_prog_perl_modules.html
>
> I would recommend grabbing a copy of this file, and change the error
> message as follows:
> Perl module IPC::Run is required to run TAP tests
>
> See the patch attached as reference, we could simplify the macro of
> this m4 file and remove the check for perl, which is here:
> +# Make sure we have perl
> +if test -z "$PERL"; then
> +AC_CHECK_PROG(PERL,perl,perl)
> +fi
> Though I kept the original script as-is in the patch attached.
> Regards,
Michael,

Thank you. You are right, of course. I missed the 
m4_ax_prog_perl_modules. Please, see the fixed version of patch in the 
attach. I added m4_ax_prog_perl_modules and change the error messages.

The best regards,
Eugene Kazakov,
Postgres Professional