Fix some cmake issues

fix #2551

CMakeLists.txt

@@ -173,15 +173,13 @@ target_link_libraries(${PROJECT_NAME}
 if(SYSTEMDDAEMON_FOUND)
   target_link_libraries(xmpp ${SYSTEMDDAEMON_LIBRARIES})
 endif()
-if(WITH_DOC)
+
-  add_dependencies(${PROJECT_NAME} doc)
-endif()
 
 #
 ## Tests
 #
-
+add_executable(test_suite EXCLUDE_FROM_ALL
-add_executable(test_suite src/test.cpp)
+  src/test.cpp)
 target_link_libraries(test_suite
   xmpp
   irc
@@ -190,6 +188,7 @@ target_link_libraries(test_suite
   config
   logger)
 
+
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/config.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/src/config.h)
 
 #
@@ -198,7 +197,7 @@ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/src/config.h.cmake ${CMAKE_CURRENT_BI
 install(TARGETS ${PROJECT_NAME}
   RUNTIME DESTINATION bin)
 if(WITH_DOC)
-  install(FILES ${MAN_PAGE} DESTINATION man/man1)
+  install(FILES ${MAN_PAGE} DESTINATION share/man/man1 OPTIONAL)
 endif()
 
 #