From 2f1053f3ec400822b3c683a2bcc24b492f1fe7d7 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 2 Aug 2017 15:22:20 +0200
Subject: Indicate that source is preprocessed to modules

---
 libmhello/build/root.build | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'libmhello/build/root.build')

diff --git a/libmhello/build/root.build b/libmhello/build/root.build
index 0f4a099..4286e66 100644
--- a/libmhello/build/root.build
+++ b/libmhello/build/root.build
@@ -2,6 +2,12 @@ cxx.std = experimental
 
 cxx.features.symexport = true
 
+# Indicate that our sources do not use #include and module imports do not
+# depend on the preprocessor.
+#
+if ($cxx.id.type != 'msvc') # Temporary for 'export module M;' fixup.
+  cxx.preprocessed = modules
+
 using cxx
 
 assert $cxx.features.modules 'c++ compiler does not support modules'
-- 
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