From 8660f7755238786d3e42fa0043ca2c528603bc6a Mon Sep 17 00:00:00 2001
From: jzmaddock <jzmaddock@gmail.com>
Date: Fri, 7 Feb 2014 13:08:03 +0000
Subject: [PATCH] Tentative fix for Clang build configuration issue.

---
 test/Jamfile.v2         | 8 +++++++-
 test/cmd_line_check.cpp | 9 +++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 test/cmd_line_check.cpp

diff --git a/test/Jamfile.v2 b/test/Jamfile.v2
index ba8f7804..533df58e 100644
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -65,5 +65,11 @@ test-suite config
     ]
     [ compile-fail threads/test_thread_fail1.cpp ]
     [ compile-fail threads/test_thread_fail2.cpp ]
-    [ compile boost_fallthrough_test.cpp : <toolset>clang:<cxxflags>"-std=c++11 -Wimplicit-fallthrough" <warnings-as-errors>on <warnings>all ]
+    [ compile boost_fallthrough_test.cpp : [ check-target-builds has_clang_implicit_fallthrough "Clang implicit fallthrough" : <toolset>clang:<cxxflags>"-std=c++11 -Wimplicit-fallthrough" <warnings-as-errors>on <warnings>all ] ]
   ;
+
+obj has_clang_implicit_fallthrough : cmd_line_check.cpp :
+		<toolset>clang:<cxxflags>"-std=c++11 -Wimplicit-fallthrough" <warnings-as-errors>on <warnings>all ;
+
+explicit has_clang_implicit_fallthrough ;
+
diff --git a/test/cmd_line_check.cpp b/test/cmd_line_check.cpp
new file mode 100644
index 00000000..33dff646
--- /dev/null
+++ b/test/cmd_line_check.cpp
@@ -0,0 +1,9 @@
+
+#ifndef __clang__
+#  error "This test is for Clang only"
+#endif
+
+int main()
+{
+	return 0;
+}
\ No newline at end of file