add option to conditionally build manual selector node (BehaviorTree#397)

* add option to conditionally build manual selector node

Signed-off-by: Alberto Soragna <alberto.soragna@gmail.com>

* do not fail if BUILD_MANUAL_SELECTOR is true but Curses is not found

Signed-off-by: Alberto Soragna <alberto.soragna@gmail.com>

Author: alsora

CMakeLists.txt

@@ -23,6 +23,7 @@ option(BUILD_SAMPLES    "Build sample nodes" ON)
 option(BUILD_UNIT_TESTS "Build the unit tests" ON)
 option(BUILD_TOOLS "Build commandline tools" ON)
 option(BUILD_SHARED_LIBS "Build shared libraries" ON)
+option(BUILD_MANUAL_SELECTOR "Build manual selector node" ON)
 option(ENABLE_COROUTINES "Enable boost coroutines" ON)
 
 #---- Include boost to add coroutines ----
@@ -166,14 +167,17 @@ list(APPEND BT_SOURCE
     3rdparty/minitrace/minitrace.cpp
     )
 
-find_package(Curses QUIET)
-
-if(CURSES_FOUND)
-    list(APPEND BT_SOURCE
-        src/controls/manual_node.cpp
-        )
-    list(APPEND BEHAVIOR_TREE_PUBLIC_LIBRARIES ${CURSES_LIBRARIES})
-    add_definitions(-DNCURSES_FOUND)
+if(BUILD_MANUAL_SELECTOR)
+    find_package(Curses QUIET)
+    if(CURSES_FOUND)
+        list(APPEND BT_SOURCE
+            src/controls/manual_node.cpp
+            )
+        list(APPEND BEHAVIOR_TREE_PUBLIC_LIBRARIES ${CURSES_LIBRARIES})
+        add_definitions(-DNCURSES_FOUND)
+    else()
+        message(WARNING "NCurses NOT found. Skipping the build of manual selector node.")
+    endif()
 endif()