From: Peter Rabbitson <ribasushi@cpan.org>
Date: Sun, 10 May 2009 18:17:09 +0000 (+0000)
Subject: No more 'I forgot to run perl Makefile.PL'
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=ab340f7f;p=dbsrgits%2FDBIx-Class-Historic.git

No more 'I forgot to run perl Makefile.PL'
---

diff --git a/t/lib/DBICTest.pm b/t/lib/DBICTest.pm
old mode 100755
new mode 100644
index e4b9b76..d1d53c5
--- a/t/lib/DBICTest.pm
+++ b/t/lib/DBICTest.pm
@@ -3,6 +3,7 @@ package # hide from PAUSE
 
 use strict;
 use warnings;
+use DBICTest::AuthorCheck;
 use DBICTest::Schema;
 
 =head1 NAME
diff --git a/t/lib/DBICTest/AuthorCheck.pm b/t/lib/DBICTest/AuthorCheck.pm
new file mode 100644
index 0000000..4d2a6f6
--- /dev/null
+++ b/t/lib/DBICTest/AuthorCheck.pm
@@ -0,0 +1,106 @@
+package # hide from PAUSE 
+    DBICTest::AuthorCheck;
+
+use strict;
+use warnings;
+
+use Path::Class qw/file dir/;
+
+_check_author_makefile() unless $ENV{DBICTEST_NO_MAKEFILE_VERIFICATION};
+
+# Die if the author did not update his makefile
+#
+# This is pretty heavy handed, so the check is pretty solid:
+#
+# 1) Assume that this particular module is loaded from -I <$root>/t/lib
+# 2) Make sure <$root>/Makefile.PL exists
+# 3) Make sure we can stat() <$root>/Makefile.PL
+#
+# If all of the above is satisfied
+#
+# *) die if <$root>/inc does not exist
+# *) die if no stat() results for <$root>/Makefile (covers no Makefile)
+# *) die if Makefile.PL mtime > Makefile mtime
+#
+sub _check_author_makefile {
+
+  my $root = _find_co_root()
+    or return;
+
+  # not using file->stat as it invokes File::stat which in turn breaks stat(_)
+  my ($mf_pl_mtime, $mf_mtime) = ( map
+    { (stat ($root->file ($_)) )[9] }
+    qw/Makefile.PL Makefile/
+  );
+
+  return unless $mf_pl_mtime;   # something went wrong during co_root detection ?
+
+  if (
+    not -d $root->subdir ('inc') 
+      or
+    not $mf_mtime
+      or
+    $mf_mtime < $mf_pl_mtime
+  ) {
+    print STDERR <<'EOE';
+
+
+
+
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+======================== FATAL ERROR ===========================
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+We have a number of reasons to believe that this is a development
+checkout and that you, the user, did not run `perl Makefile.PL`
+before using this code. You absolutely _must_ perform this step,
+as not doing so often results in a lot of wasted time for other
+contributors trying to assit you with "it broke!" problems.
+
+If you are seeing this message unexpectedly (i.e. you are in fact
+attempting a regular installation be it through CPAN or manually,
+set the variable DBICTEST_NO_MAKEFILE_VERIFICATION to a true value
+so you can continue. Also _make_absolutely_sure_ to report this to
+either the mailing list or to the irc channel as described in
+
+http://search.cpan.org/dist/DBIx-Class/lib/DBIx/Class.pm#GETTING_HELP/SUPPORT
+
+Failure to do this will make us believe that all these checks are
+indeed foolproof and we will remove the ability to override this
+entirely.
+
+The DBIC team
+
+
+
+EOE
+
+    exit 1;
+  }
+}
+
+# Try to determine the root of a checkout/untar if possible
+# or return undef
+sub _find_co_root {
+
+    my @mod_parts = split /::/, (__PACKAGE__ . '.pm');
+    my $rel_path = file (@mod_parts);
+
+    return undef unless ($INC{$rel_path});
+
+    # a bit convoluted, but what we do here essentially is:
+    #  - get the file name of this particular module
+    #  - do 'cd ..' as many times as necessary to get to t/lib/../..
+
+    my $root = dir ($INC{$rel_path});
+    for (0 .. @mod_parts + 1) {
+        $root = $root->parent;
+    }
+
+    return (-f $root->file ('Makefile.PL') )
+      ? $root
+      : undef
+    ;
+}
+
+1;