From 02f385b9eafe7172727cf8cdd2d9c86540cdf275 Mon Sep 17 00:00:00 2001
From: Michael Meeks <michael.meeks@suse.com>
Date: Thu, 29 Mar 2012 17:27:08 +0100
Subject: [PATCH] deal with symlinks in your PWD breaking gnumake dependencies

---
 autogen.sh | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/autogen.sh b/autogen.sh
index 78a6f6734bc5..6f997124f794 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -3,6 +3,7 @@
         if 0;
 
 use strict;
+use Cwd ('cwd', 'realpath');
 
 sub clean()
 {
@@ -131,6 +132,16 @@ chomp $system;
 
 sanity_checks ($system) unless($system eq 'Darwin');
 
+# since this looks crazy, if you have a symlink on a path up to and including
+# the current directory, we need our configure to run in the realpath of that
+# such that compiled (realpath'd) dependency filenames match the filenames
+# used in our makefiles - ie. this gets dependencies right via SRC_ROOT
+my $cwd_str = realpath(cwd());
+chdir ($cwd_str);
+# more amazingly, if you don't clobber 'PWD' shells will re-assert their
+# old path from the environment, not cwd.
+$ENV{PWD} = $cwd_str;
+
 my $aclocal_flags = $ENV{ACLOCAL_FLAGS};
 
 if ($aclocal_flags eq "")