Initial take on build2-based build

Only C++11 is supported with GCC 4.8 and up and VC 14 and up.

This change also introduces the ODB_THREADS_CXX11 threading model. It
is the default for the build2 build but can be disabled with a global
ODB_THREADS_NONE define (global means that it should be in effect both
when building and using the library).

1 files changed, 23 insertions, 0 deletions

diff --git a/odb/details/thread.cxx b/odb/details/thread.cxx
new file mode 100644
index 0000000..d00f498
--- /dev/null
+++ b/odb/details/thread.cxx
@@ -0,0 +1,23 @@
+// file      : odb/details/thread.cxx
+// copyright : Copyright (c) 2009-2015 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#include <odb/details/thread.hxx>
+
+// We might be compiled with ODB_THREADS_NONE.
+//
+#ifdef ODB_THREADS_CXX11
+
+namespace odb
+{
+  namespace details
+  {
+    void thread::
+    thunk (void* (*f) (void*), void* a, std::promise<void*> p)
+    {
+      p.set_value (f (a));
+    }
+  }
+}
+
+#endif