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-rw-r--r--config/check_modules.pl27
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diff --git a/config/check_modules.pl b/config/check_modules.pl
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+#
+# Verify that required Perl modules are available,
+# in at least the required minimum versions.
+# (The required minimum versions are all quite ancient now,
+# but specify them anyway for documentation's sake.)
+#
+use strict;
+use warnings;
+use Config;
+
+use IPC::Run 0.79;
+
+# Test::More and Time::HiRes are supposed to be part of core Perl,
+# but some distros omit them in a minimal installation.
+use Test::More 0.98;
+use Time::HiRes 1.52;
+
+# While here, we might as well report exactly what versions we found.
+diag("IPC::Run::VERSION: $IPC::Run::VERSION");
+diag("Test::More::VERSION: $Test::More::VERSION");
+diag("Time::HiRes::VERSION: $Time::HiRes::VERSION");
+
+# Check that if prove is using msys perl it is for an msys target
+ok( ($ENV{__CONFIG_HOST_OS__} || "") eq 'msys',
+ "Msys perl used for correct target") if $Config{osname} eq 'msys';
+ok(1);
+done_testing();