perldoc src/test/perl/PostgresNode.pm

Required Perl

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Portability

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Avoid using any bleeding-edge Perl features. We have buildfarm animals

running Perl versions as old as 5.8.3, so your tests will be expected

to pass on that.

Tests must run on perl 5.8.3 and newer. perlbrew is a good way to obtain such

a Perl; see http://perlbrew.pl .

Also, do not use any non-core Perl modules except IPC::Run. Or, if you

must do so for a particular test, arrange to skip the test when the needed

module isn't present. If unsure, you can consult Module::CoreList to find

out whether a given module is part of the Perl core, and which module

versions shipped with which Perl releases.

Just install and

One way to test for compatibility with old Perl versions is to use

perlbrew; see http://perlbrew.pl . After installing that, do

export PERLBREW_CONFIGURE_FLAGS='-de -Duseshrplib'

perlbrew --force install 5.8.3

perlbrew use 5.8.3

perlbrew install-cpanm

cpanm install IPC::Run

cpanm install Test::Simple@0.87_01

cpanm install IPC::Run@0.79

cpanm install ExtUtils::MakeMaker@6.50 # downgrade

then re-run configure to ensure the correct Perl is used when running

tests. To verify that the right Perl was found:

Then re-runPostgres'configure to ensure the correct Perl is used when

runningtests. To verify that the right Perl was found:

grep ^PERL= config.log

Due to limitations of cpanm, this recipe doesn't exactly duplicate the

module list of older buildfarm animals. The discrepancies should seldom

matter, but if you want to be sure, bypass cpanm and instead manually

install the desired versions of Test::Simple and IPC::Run.