--- man/CMakeLists.txt.orig	2017-12-20 15:03:02 UTC
+++ man/CMakeLists.txt
@@ -3,6 +3,12 @@ if(SPHINX_FOUND)
     # Sphinx cache with pickled ReST documents
     set(SPHINX_CACHE_DIR "${CMAKE_CURRENT_BINARY_DIR}/_doctrees")
 
+    if(WITH_DOC)
+       add_custom_target(man ALL DEPENDS doc-man COMMENT "Building manual pages...")
+    else(WITH_DOC)
+       add_custom_target(man DEPENDS doc-maan COMMENT "Building manual pages...")
+    endif(WITH_DOC)
+
     # HTML output directory
     set(SPHINX_MAN_DIR      "${CMAKE_CURRENT_BINARY_DIR}/man1")
     install(DIRECTORY ${SPHINX_MAN_DIR} DESTINATION ${CMAKE_INSTALL_MANDIR} OPTIONAL)