From b3bc26dc284cf73e97b88c9979d49368d07e686c Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Fri, 26 Mar 2021 16:03:29 +0200
Subject: Add support for propagating project environment

---
 libbuild2/adhoc-rule-cxx.cxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'libbuild2/adhoc-rule-cxx.cxx')

diff --git a/libbuild2/adhoc-rule-cxx.cxx b/libbuild2/adhoc-rule-cxx.cxx
index 4bf67f0..92af269 100644
--- a/libbuild2/adhoc-rule-cxx.cxx
+++ b/libbuild2/adhoc-rule-cxx.cxx
@@ -291,8 +291,10 @@ namespace build2
         create_module_context (ctx, loc);
       }
 
-      // "Switch" to the module context.
+      // Clear current project's environment and "switch" to the module
+      // context.
       //
+      auto_thread_env penv (nullptr);
       context& ctx (*t.ctx.module_context);
 
       // Mark the queue so that we don't work any tasks that may already be
-- 
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