[Automake-commit] [SCM] GNU Automake branch, micro, updated. v1.15-12-gb3da45a

[Paul Eggert]

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- Log -----------------------------------------------------------------
commit b3da45ad5e71c9bdad73a839809964550b506eeb
Author: Jim Meyering <address@hidden>
Date:   Thu Sep 8 18:58:43 2016 -0700

    automake: do not emit rule with two dependents
    
    On a system using our replacement alloca, make would emit
    this warning:
      target '.deps/alloca.Po' given more than once in the same rule
    That arose because automake would emit a rule depending on both
    ./.deps/alloca.Po and .deps/alloca.Po. Normally, duplicate
    dependents are avoided by virtue of their names being keys in
    the %dep_files hash, but in this case, that particular file
    was specified in two different ways.
    * bin/automake.in (handle_ALLOCA): When the $dir prefix is empty,
    make it './', to ensure that when we add ./.deps/alloca.Po
    it is deduped.
    See: http://bugs/gnu/org/22702

-----------------------------------------------------------------------

Summary of changes:
 bin/automake.in |    1 +
 1 file changed, 1 insertion(+)

diff --git a/bin/automake.in b/bin/automake.in
index 2c8f31e..5cacf63 100644
--- a/bin/automake.in
+++ b/bin/automake.in
@@ -2297,6 +2297,7 @@ sub handle_ALLOCA
   $lt ||= '';
   my $dir = handle_LIBOBJS_or_ALLOCA "${lt}ALLOCA";
 
+  $dir eq '' and $dir = './';
   $var->requires_variables ("address@hidden@ used", $lt . 'ALLOCA');
   $dep_files{$dir . '$(DEPDIR)/alloca.P' . $myobjext} = 1;
   require_libsource_with_macro ($cond, $var, FOREIGN, 'alloca.c');


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