From b0fc7e3f40c75c6f9dc729be8bb1b0a28e65e6bd Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 19 Jul 2017 19:30:59 +0200
Subject: Warn if compiler does not support modules

---
 build/root.build | 3 ++-
 buildfile        | 3 +--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/build/root.build b/build/root.build
index cfbcda9..9f670f8 100644
--- a/build/root.build
+++ b/build/root.build
@@ -6,7 +6,8 @@ cxx.std = experimental
 
 using cxx
 
-#assert $cxx.features.modules 'c++ compiler does not support modules'
+if! $cxx.features.modules
+  warn 'c++ compiler does not support modules'
 
 mxx{*}: extension = mxx
 cxx{*}: extension = cxx
diff --git a/buildfile b/buildfile
index 26bd1b8..6ec4a5d 100644
--- a/buildfile
+++ b/buildfile
@@ -6,8 +6,7 @@
 # we have used headers (i.e., whatever object code generated from those headers
 # would have ended up in each executable/library).
 #
-./: liba{std-modules} tests/ doc{INSTALL LICENSE NEWS README version} \
-  file{manifest}
+./: tests/ doc{INSTALL LICENSE NEWS README version} file{manifest}
 
 doc{version}: file{manifest} # Generated by the version module.
 doc{version}: dist = true
-- 
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