1 files changed, 42 insertions, 0 deletions
diff --git a/build_files/scons/Modules/FindSharedPtr.py b/build_files/scons/Modules/FindSharedPtr.py
new file mode 100644
index 00000000000..848431f8271
--- /dev/null
+++ b/build_files/scons/Modules/FindSharedPtr.py
@@ -0,0 +1,42 @@
+def FindSharedPtr(conf):
+    """
+    Detect shared_ptr availability
+    """
+
+    found = False
+    namespace = None
+    header = None
+
+    if conf.CheckCXXHeader("memory"):
+        # Finding the memory header doesn't mean that shared_ptr is in std
+        # namespace.
+        #
+        # In particular, MSVC 2008 has shared_ptr declared in std::tr1.  In
+        # order to support this, we do an extra check to see which namespace
+        # should be used.
+
+        if conf.CheckType('std::shared_ptr<int>', language = 'CXX', includes="#include <memory>"):
+            print("-- Found shared_ptr in std namespace using <memory> header.")
+            namespace = 'std'
+            header = 'memory'
+        elif conf.CheckType('std::tr1::shared_ptr<int>', language = 'CXX', includes="#include <memory>"):
+            print("-- Found shared_ptr in std::tr1 namespace using <memory> header..")
+            namespace = 'std::tr1'
+            header = 'memory'
+
+    if not namespace and conf.CheckCXXHeader("tr1/memory"):
+        # Further, gcc defines shared_ptr in std::tr1 namespace and
+        # <tr1/memory> is to be included for this. And what makes things
+        # even more tricky is that gcc does have <memory> header, so
+        # all the checks above wouldn't find shared_ptr.
+        if conf.CheckType('std::tr1::shared_ptr<int>', language = 'CXX', includes="#include <tr1/memory>"):
+            print("-- Found shared_ptr in std::tr1 namespace using <tr1/memory> header..")
+            namespace = 'std::tr1'
+            header = 'tr1/memory'
+
+    if not namespace:
+        print("-- Unable to find shared_ptrred_map>.")
+
+    conf.env['WITH_SHARED_PTR_SUPPORT'] = namespace and header
+    conf.env['SHARED_PTR_NAMESPACE'] = namespace
+    conf.env['SHARED_PTR_HEADER'] = header