From 3dd1faa5c849dbeb59a88653068c010699ce86f7 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@kolpackov.net>
Date: Mon, 14 Nov 2005 15:31:13 +0000
Subject: Implemented the .INCLUDE_DIRS special variable. It expands to a list
 of directories that make searches for included makefiles.

---
 read.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'read.c')

diff --git a/read.c b/read.c
index 9fbfd35..894bf6f 100644
--- a/read.c
+++ b/read.c
@@ -2917,7 +2917,8 @@ construct_include_path (char **arg_dirs)
 
   dirs[idx] = 0;
 
-  /* Now compute the maximum length of any name in it.  */
+  /* Now compute the maximum length of any name in it. Also add each
+     dir to the .INCLUDE_DIRS variable.  */
 
   max_incl_len = 0;
   for (i = 0; i < idx; ++i)
@@ -2930,6 +2931,10 @@ construct_include_path (char **arg_dirs)
 	dirs[i] = savestring (dirs[i], len - 1);
       if (len > max_incl_len)
 	max_incl_len = len;
+
+      /* Append to .INCLUDE_DIRS.   */
+      do_variable_definition (NILF, ".INCLUDE_DIRS", dirs[i],
+                              o_default, f_append, 0);
     }
 
   include_directories = dirs;
-- 
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