Link against python in python modules for now. Refs #639

* This really isn't ideal as it means the python module will only work
  with that specific major.minor version of python, when it could in
  theory work with any python version above 3.2 or so, depending on what
  features are used.
* Since we're not distributing these modules yet though, add this
  linking to support -Wl,--no-undefined.

qrenderdoc/Code/pyrenderdoc/CMakeLists.txt

@@ -35,6 +35,9 @@ set(CMAKE_SKIP_BUILD_RPATH TRUE)
 set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
 set(CMAKE_INSTALL_RPATH "$ORIGIN/:$ORIGIN/../lib/")
 
+# Add python library
+set (CMAKE_SHARED_LINKER_FLAGS "${PYTHON_LIBRARY} ${CMAKE_SHARED_LINKER_FLAGS}")
+
 add_library(_renderdoc SHARED
     ${CMAKE_BINARY_DIR}/qrenderdoc/renderdoc_python.cxx
     pyrenderdoc_stub.cpp)