[PATCH 6/6] automake: fixups for read_am_file() and calling code

[Stefano Lattarini]

* automake.in (read_am_file): Adjust function prototype (was
requiring only two arguments, rather than three).  Rename the
parameter '$curdir' to the more correct '$reldir'.  Rename the
local variable '$cur_dir' to the more appropriate and less
confusing '$reldir_canon', and avoid continuously re-computing
it in the loop on input lines, since it is fixed per-Makefile.
When processing an include directive, store the computed new
relative dir path in a variable named '$new_reldir' rather than
'$new_curdir'.

Signed-off-by: Stefano Lattarini <stefano.lattar...@gmail.com>
---
 automake.in | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/automake.in b/automake.in
index 5bfc0d1..9133117 100644
--- a/automake.in
+++ b/automake.in
@@ -6330,15 +6330,16 @@ sub check_trailing_slash ($\$)
 }
 
 
-# &read_am_file ($AMFILE, $WHERE, $CURDIR)
+# &read_am_file ($AMFILE, $WHERE, $RELDIR)
 # ----------------------------------------
 # Read Makefile.am and set up %contents.  Simultaneously copy lines
 # from Makefile.am into $output_trailer, or define variables as
 # appropriate.  NOTE we put rules in the trailer section.  We want
 # user rules to come after our generated stuff.
-sub read_am_file ($$)
+sub read_am_file ($$$)
 {
-    my ($amfile, $where, $curdir) = @_;
+    my ($amfile, $where, $reldir) = @_;
+    my $canon_reldir = &canonicalize ($reldir);
 
     my $am_file = new Automake::XFile ("< $amfile");
     verb "reading $amfile";
@@ -6423,17 +6424,16 @@ sub read_am_file ($$)
 
        my $new_saw_bk = check_trailing_slash ($where, $_);
 
-       my $cur_dir = &canonicalize ($curdir);
-       if ($curdir eq '.')
+       if ($reldir eq '.')
          {
            # If present, eat the following '_' or '/', converting
            # "{RELDIR}/foo" and "{CANON_RELDIR}_foo" into plain "foo"
-           # when $curdir is '.'.
+           # when $reldir is '.'.
            $_ =~ s,\{(D|RELDIR)\}/,,g;
            $_ =~ s,\{(C|CANON_RELDIR)\}_,,g;
          }
-       $_ =~ s/\{(D|RELDIR)\}/${curdir}/g;
-       $_ =~ s/\{(C|CANON_RELDIR)\}/${cur_dir}/g;
+       $_ =~ s/\{(D|RELDIR)\}/${reldir}/g;
+       $_ =~ s/\{(C|CANON_RELDIR)\}/${canon_reldir}/g;
 
        if (/$IGNORE_PATTERN/o)
        {
@@ -6596,10 +6596,10 @@ sub read_am_file ($$)
                push_dist_common ("\$\(srcdir\)/$path");
                $path = $relative_dir . "/" . $path if $relative_dir ne '.';
              }
-           my $new_curdir = File::Spec->abs2rel ($path, $relative_dir);
-           $new_curdir = '.' if $new_curdir !~ s,/[^/]*$,,;
+           my $new_reldir = File::Spec->abs2rel ($path, $relative_dir);
+           $new_reldir = '.' if $new_reldir !~ s,/[^/]*$,,;
            $where->push_context ("'$path' included from here");
-           &read_am_file ($path, $where, $new_curdir);
+           &read_am_file ($path, $where, $new_reldir);
            $where->pop_context;
        }
        else
-- 
1.8.1.1.473.g9a6c84e