LL physics extensions stub

Since the CMakeLists.txt includes some same .cmake files as the viewer,
I think the project might as well be a part of the Linden libraries
code. And for now is put under llprimitive (might not be consistent, in
fact the opposite, with they way llplugin relates to slplugin), but I
think this way results the least change, and it still works.

The differences include:
- all files (common llphysicsextensions headers to be included by
  library users and the stub implementation files) are put inside one
  directory, and the CMakeLists.txt is adjusted accordingly;
- modernised CMakeLists.txt, so include_directories are now implied by
  target_link_libraries;
- some file name fix;
- add_library is not explicitly set to STATIC;

1 files changed, 103 insertions, 0 deletions

diff --git a/indra/llprimitive/llphysicsextensions/llphysicsextensions.cpp b/indra/llprimitive/llphysicsextensions/llphysicsextensions.cpp
new file mode 100644
index 0000000000..9bb4522a23
--- /dev/null
+++ b/indra/llprimitive/llphysicsextensions/llphysicsextensions.cpp
@@ -0,0 +1,103 @@
+/**
+* @file   llphysicsextensions.cpp
+* @author nyx@lindenlab.com
+* @brief  LLPhysicsExtensions core initialization methods
+*
+* $LicenseInfo:firstyear=2012&license=lgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2011, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+
+#if defined(_WINDOWS)
+#	include "windowsincludes.h"
+#endif
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+
+#include "llphysicsextensions.h"
+
+#if !defined(LL_PHYSICS_EXTENSIONS_STUB)
+#	include "LLPhysicsExtensionsImpl.h"
+#else
+#	include "LLPhysicsExtensionsStubImpl.h"
+#endif
+
+
+//disable the undefined symbol optimization
+//#pragma warning (disable : 4221)
+
+//=============================================================================
+
+/*static */bool LLPhysicsExtensions::s_isInitialized = false;
+
+
+/*static*/bool LLPhysicsExtensions::isFunctional()
+{
+#if !defined(LL_PHYSICS_EXTENSIONS_STUB)
+	return true;
+#else
+	return false;
+#endif
+}
+
+//=============================================================================
+
+#if !defined(LL_PHYSICS_EXTENSIONS_STUB) && defined(HK_COMPILER_CLANG)
+ //have to specialize before use so that generalized one not auto gen-d
+HK_SINGLETON_SPECIALIZATION_DECL(LLPhysicsExtensionsImpl);
+#endif
+
+/*static*/LLPhysicsExtensions* LLPhysicsExtensions::getInstance()
+{
+	if ( !s_isInitialized )
+	{
+		return NULL;
+	}
+	else
+	{
+#if !defined(LL_PHYSICS_EXTENSIONS_STUB)
+		return &hkSingleton<LLPhysicsExtensionsImpl>::getInstance();
+#else
+		return LLPhysicsExtensionsImpl::getInstance();
+#endif
+	}
+}
+
+//=============================================================================
+
+/*static */bool LLPhysicsExtensions::initSystem()
+{
+	bool result = LLPhysicsExtensionsImpl::initSystem();
+	if ( result )
+	{
+		s_isInitialized = true;
+	}
+	return result;
+}
+//=============================================================================
+/*static */bool LLPhysicsExtensions::quitSystem()
+{
+	return LLPhysicsExtensionsImpl::quitSystem();
+}
+//=============================================================================
+