From daee080865780378a6fb53b068f78c12ab95b3e4 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 28 Aug 2019 17:36:59 +0200
Subject: Export dependency on -lpthread

---
 libbuild2/buildfile | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libbuild2/buildfile b/libbuild2/buildfile
index e838e8e..865bb91 100644
--- a/libbuild2/buildfile
+++ b/libbuild2/buildfile
@@ -117,6 +117,12 @@ lib{build2}:
   cxx.export.libs = $int_libs
 }
 
+# While we don't call any pthread_*() functions in our API, this appears to be
+# needed for some std::thread implementations (like libstdc++).
+#
+if ($cxx.target.class != 'windows')
+  lib{build2}: cxx.export.libs += -lpthread
+
 liba{build2}: cxx.export.poptions += -DLIBBUILD2_STATIC
 libs{build2}: cxx.export.poptions += -DLIBBUILD2_SHARED
 
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