From 1a999110ea49292ad63a7dfd1edb35dd7fdf7482 Mon Sep 17 00:00:00 2001
From: Vladimir Prus <ghost@cs.msu.su>
Date: Sat, 4 Apr 2009 21:15:09 +0000
Subject: [PATCH] Adjust the search for project-config.jam.

[SVN r52173]
---
 v2/build-system.jam | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/v2/build-system.jam b/v2/build-system.jam
index 016942f2d..ef2e83068 100644
--- a/v2/build-system.jam
+++ b/v2/build-system.jam
@@ -388,14 +388,23 @@ local rule load-configuration-files
             ECHO "notice: User configuration file loading explicitly disabled." ;
         }
     }
-    
-    initialize-config-module project-config ;
-    
-    if [ project.find "." : "." ]
+        
+    # We look for project-config.jam from "." upward.
+    # I am not sure this is 100% right decision, we might as well check for
+    # it only alonside the Jamroot file. However:
+    #
+    # - We need to load project-root.jam before Jamroot
+    # - We probably would need to load project-root.jam even if there's no
+    #   Jamroot - e.g. to implement automake-style out-of-tree builds.
+    local file = [ path.glob "." : project-config.jam ] ;
+    if ! $(file)
     {
-        local project-module = [ project.load "." ] ;
-        local root = [ project.attribute $(project-module) project-root ] ;
-        load-config project-config : project-config.jam : $(root) ;        
+        file = [ path.glob-in-parents "." : project-config.jam ] ;
+    }
+    if $(file)
+    {
+        initialize-config-module project-config ;
+        load-config project-config : project-config.jam : $(file:D) ;        
     }   
 }