From 378ab3e097cc9cd9dc8627cf7f50e1ac58b520d0 Mon Sep 17 00:00:00 2001
From: David Brooks <dave@bcs.co.nz>
Date: Thu, 26 Sep 2019 10:15:28 +1200
Subject: [PATCH] Python: only build documentation if we have a pre-built
 Python.

---
 CMakeLists.txt | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a9656bc5e7..805b0d407a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -997,16 +997,19 @@ foreach(PLUGIN ${PLUGINS})
     add_subdirectory(src/plugins/${PLUGIN})
 endforeach()
 
-# Fetch parts of our documentation and build it
+if(USE_PREBUILT_PYTHON_LIBRARY_PACKAGE)
+    # We have already built Python and hence have Sphinx available, so we can
+    # fetch parts of our documentation and build it
 
-execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_SOURCE_DIR}/doc
-                                                           ${PROJECT_BUILD_DIR}/doc)
+    execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory ${CMAKE_SOURCE_DIR}/doc
+                                                               ${PROJECT_BUILD_DIR}/doc)
 
-configure_file(${PROJECT_BUILD_DIR}/doc/${CMAKE_PROJECT_NAME}.qhcp.in
-               ${PROJECT_BUILD_DIR}/doc/${CMAKE_PROJECT_NAME}.qhcp)
+    configure_file(${PROJECT_BUILD_DIR}/doc/${CMAKE_PROJECT_NAME}.qhcp.in
+                   ${PROJECT_BUILD_DIR}/doc/${CMAKE_PROJECT_NAME}.qhcp)
 
-build_documentation(user)
-build_documentation(developer)
+    build_documentation(user)
+    build_documentation(developer)
+endif()
 
 # Build the GUI version of OpenCOR