From 017bbbfee11b6b9ed615bb0e176f29e38b696f6f Mon Sep 17 00:00:00 2001
From: Akim Demaille <akim@lrde.epita.fr>
Date: Fri, 21 Dec 2012 13:55:26 +0100
Subject: [PATCH] configure: support absolete out-of-tree builds

configure: handle the case of absolute paths.
Reported by grishka.
---
 README    |  4 ++--
 configure | 11 ++++++++---
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/README b/README
index eedc71cc..43e6c3b7 100644
--- a/README
+++ b/README
@@ -35,8 +35,8 @@ Documentation:
    make test
    make install
 
-Alternatively, VPATH builds are supported: you may use different
-directories to old build objects, kept separate from your source tree:
+Alternatively, out-of-tree builds are supported: you may use different
+directories to hold build objects, kept separate from your source tree:
 
    mkdir _build
    cd _build
diff --git a/configure b/configure
index 1c1497ae..e4321b71 100755
--- a/configure
+++ b/configure
@@ -502,9 +502,14 @@ if test "$source_path_used" = "yes" ; then
     for f in $FILES ; do
         dir=`fn_dirname "$f"`
         test -d "$dir" || mkdir -p "$dir"
-        back=`echo "$source_path/$dir/" | sed 's,/\./,/,g;s,[^/]*/,../,g'`
-        back=$back$f
-        ln -sf $back $f
+        # Build a symlink $f that points to $dest, its $source_path
+        # counterpart.
+        case $source_path in
+          /*) dest=$source_path/$f;;
+           *) dest=`echo "$source_path/$dir/" | sed 's,/\./,/,g;s,[^/]*/,../,g'`
+              dest=$dest$f;;
+        esac
+        ln -sf $dest $f
     done
 fi
 cat >>config.mak <<EOF
-- 
2.11.4.GIT