From 0353b231d51ab7ea5ead98ac838e7c2ba1b0df89 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 20 Apr 2021 11:19:28 +0200
Subject: Track changes to environment in cc rules

---
 libbuild2/config/utility.hxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'libbuild2/config/utility.hxx')

diff --git a/libbuild2/config/utility.hxx b/libbuild2/config/utility.hxx
index 382c22f..8dc0650 100644
--- a/libbuild2/config/utility.hxx
+++ b/libbuild2/config/utility.hxx
@@ -112,6 +112,8 @@ namespace build2
     //    directly). The module's load() function is a natural place to do
     //    that.
     //
+    // See also build2::hash_environment().
+    //
     inline void
     save_environment (scope& rs, const string& var)
     {
@@ -146,7 +148,7 @@ namespace build2
       }
     }
 
-    // A NULL-terminated list of variables.
+    // A NULL-terminated list of variables (may itself be NULL).
     //
     inline void
     save_environment (scope& rs, const char* const* vars)
-- 
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