Fix paths in documentation generation

Signed-off-by: Erik Boasson <eb@ilities.com>

cmake/Modules/FindSphinx.cmake

@@ -319,7 +319,7 @@ function(sphinx_add_docs _target)
   endif()
 
   add_custom_target(
-    ${_target}
+    ${_target} ALL
     COMMAND ${SPHINX_BUILD_EXECUTABLE}
               -b ${_builder}
               -d "${CMAKE_CURRENT_BINARY_DIR}/${_target}.cache/_doctrees"

docs/CMakeLists.txt

@@ -46,11 +46,11 @@ if(BUILD_DOCS)
     docs
     BREATHE_PROJECTS ddsc_api_docs
     BUILDER html
-    SOURCE_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}")
+    SOURCE_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/manual")
   add_dependencies(docs options_doc)
 
   install(
-    DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
+    DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/docs"
     DESTINATION "${CMAKE_INSTALL_DOCDIR}/manual"
     COMPONENT dev)
 endif()