Add OpenVR SDK to third_party

third_party/openvr/src/src/CMakeLists.txt

Index: third_party/openvr/src/src/CMakeLists.txt
diff --git a/third_party/openvr/src/src/CMakeLists.txt b/third_party/openvr/src/src/CMakeLists.txt
new file mode 100644
index 0000000000000000000000000000000000000000..7e192c51bfa53cc951114576bcb7257ca6d1170a
--- /dev/null
+++ b/third_party/openvr/src/src/CMakeLists.txt
@@ -0,0 +1,74 @@
+# Project name.
+project(openvr_api)
+
+set( LIBNAME "openvr_api" )
+
+# Set some properies for specific files.
+if(APPLE)
+  set(CMAKE_MACOSX_RPATH 0)
+  if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
+    set_source_files_properties(vrcommon/pathtools_public.cpp vrcommon/vrpathregistry_public.cpp PROPERTIES COMPILE_FLAGS "-x objective-c++")
+  endif()
+  if(BUILD_SHARED)
+    find_library(FOUNDATION_FRAMEWORK Foundation)
+    mark_as_advanced(FOUNDATION_FRAMEWORK)
+    set(EXTRA_LIBS ${EXTRA_LIBS} ${FOUNDATION_FRAMEWORK})
+  endif(BUILD_SHARED)
+elseif(WIN32)
+  if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+    add_definitions( -DWIN64 )
+    set( LIBNAME "openvr_api64" )
+  endif()
+endif()
+
+# Add include folders.
+include_directories(${CMAKE_SOURCE_DIR}/src ${CMAKE_SOURCE_DIR}/headers ${CMAKE_SOURCE_DIR}/src/vrcommon)
+
+if(USE_CUSTOM_LIBCXX)
+	link_directories(
+		${LIBCXX_LIB_DIR}
+	)
+endif()
+
+# Set the source group and files.
+set(CORE_FILES
+	openvr_api_public.cpp
+	jsoncpp.cpp
+)
+set(VRCOMMON_FILES
+	vrcommon/dirtools_public.cpp
+	vrcommon/envvartools_public.cpp
+	vrcommon/pathtools_public.cpp
+	vrcommon/sharedlibtools_public.cpp
+	vrcommon/hmderrors_public.cpp
+	vrcommon/vrpathregistry_public.cpp
+	vrcommon/strtools_public.cpp
+)
+
+set(SOURCE_FILES
+	${CORE_FILES}
+	${VRCOMMON_FILES}
+)
+
+source_group("Src" FILES
+	${CORE_FILES}
+)
+
+source_group("VRCommon" FILES
+	${VRCOMMON_FILES}
+)
+
+# Build the library.
+if(BUILD_SHARED)
+	add_library(${LIBNAME} SHARED ${SOURCE_FILES})
+else()
+	add_library(${LIBNAME} STATIC ${SOURCE_FILES})
+endif()
+
+if(USE_CUSTOM_LIBCXX)
+	set(EXTRA_LIBS ${EXTRA_LIBS} c++ c++abi)
+endif()
+
+target_link_libraries(${LIBNAME} ${EXTRA_LIBS})
+
+install(TARGETS ${LIBNAME} DESTINATION lib)