+
+##############################################################################
+# Bundled dependencies
+#
+# We always use the bundled zlib, libpng, and snappy sources:
+# - on Windows to make it easy to deploy the wrappers DLLs
+# - on unices to prevent symbol collisions when tracing applications that link
+# against other versions of these libraries
+
+set (ZLIB_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty/zlib)
+set (ZLIB_LIBRARIES z_bundled)
+add_subdirectory (thirdparty/zlib)
+
+include_directories (${ZLIB_INCLUDE_DIRS})
+
+set (SNAPPY_INCLUDE_DIRS ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty/snappy)
+set (SNAPPY_LIBRARIES snappy_bundled)
+add_subdirectory (thirdparty/snappy)
+
+include_directories (${SNAPPY_INCLUDE_DIRS})
+
+set (PNG_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty/libpng)
+set (PNG_DEFINITIONS "")
+set (PNG_LIBRARIES png_bundled)
+
+add_subdirectory (thirdparty/libpng)
+
+if (MSVC)
+ add_subdirectory (thirdparty/getopt)
+ include_directories (${CMAKE_CURRENT_SOURCE_DIR}/thirdparty/getopt)
+ set (GETOPT_LIBRARIES getopt_bundled)
+endif ()
+
+if (WIN32)
+ add_subdirectory (thirdparty/less)
+ add_subdirectory (thirdparty/directxtex)
+endif ()
+
+if (CMAKE_EXECUTABLE_FORMAT STREQUAL "ELF")
+ add_subdirectory (thirdparty/libbacktrace)
+ include_directories (${CMAKE_CURRENT_SOURCE_DIR}/thirdparty/libbacktrace)
+ set (LIBBACKTRACE_LIBRARIES backtrace)
+endif ()
+
+# Always use bundled QJSon.
+# - The packaged versions QJson are very old, and do not support NaN/Infinity.
+# - To make it easier to build the GUI on Windows and MacOSX, as there are no
+# binaries at all.
+if (QT4_FOUND)
+ add_definitions (-DQJSON_EXPORT=)
+ add_subdirectory (thirdparty/qjson)
+ set (QJSON_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/thirdparty)
+ set (QJSON_LIBRARY_DIRS)
+ set (QJSON_LIBRARIES qjson_bundled)
+ set (QJSON_FOUND TRUE)