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--- a/aclocal.in
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+++ b/aclocal.in
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@@ -327,6 +327,12 @@
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foreach my $m4dir (@dirlist)
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{
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+ if (! -d $m4dir)
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+ {
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+ msg ('override', "warning: skipping not existing directory `$m4dir'");
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+ next;
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+ }
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+
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if (! opendir (DIR, $m4dir))
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{
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if ($install && $type == FT_USER && $first_user_m4dir)
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