From 65be7de7aca4bdac05e0acf68ec86a351e779839 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 18 Mar 2020 07:19:41 +0200
Subject: Add $visibility(<variable>) function for querying variable visibility

---
 libbuild2/variable.hxx | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'libbuild2/variable.hxx')

diff --git a/libbuild2/variable.hxx b/libbuild2/variable.hxx
index 071cb5f..b293215 100644
--- a/libbuild2/variable.hxx
+++ b/libbuild2/variable.hxx
@@ -136,8 +136,14 @@ namespace build2
   }
 #endif
 
-  LIBBUILD2_SYMEXPORT ostream&
-  operator<< (ostream&, variable_visibility);
+  LIBBUILD2_SYMEXPORT string
+  to_string (variable_visibility);
+
+  inline ostream&
+  operator<< (ostream& o, variable_visibility v)
+  {
+    return o << to_string (v);
+  }
 
   // variable
   //
-- 
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