From f11213933bc79c8115974f5f7971b97413481654 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 12 Feb 2019 15:17:37 +0200
Subject: Normalize directory when building include prefix map

---
 build2/cc/compile-rule.cxx | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/build2/cc/compile-rule.cxx b/build2/cc/compile-rule.cxx
index b5b7cfe..dd95314 100644
--- a/build2/cc/compile-rule.cxx
+++ b/build2/cc/compile-rule.cxx
@@ -1143,6 +1143,12 @@ namespace build2
                  << " in variable " << var.name
                  << " for target " << t;
 
+          // If the directory is not normalized, we can complain or normalize
+          // it. Let's go with normalizing to minimize questions/complaints.
+          //
+          if (!d.normalized (false)) // Allow non-canonical dir separators.
+            d.normalize ();
+
           // If we are not inside our project root, then ignore.
           //
           if (!d.sub (out_root))
-- 
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