Only use Find_Package when there's no parten CMake.

src/syncterm/CMakeLists.txt

@@ -45,24 +45,30 @@ endif()
 
 add_executable(syncterm ${SOURCE})
 
-find_package(XPDev REQUIRED)
-include(${XPDev_CONFIG})
+if(NOT ${PARENT_DIRECTORY})
+	find_package(XPDev REQUIRED)
+	include(${XPDev_CONFIG})
+ENDIF()
 add_dependencies(syncterm xpdev)
 target_include_directories(syncterm PRIVATE "${XPDev_DIR}/../../../include/xpdev")
 target_compile_definitions(syncterm PRIVATE $<TARGET_PROPERTY:xpdev,INTERFACE_COMPILE_DEFINITIONS>)
 target_include_directories(syncterm PRIVATE $<TARGET_PROPERTY:xpdev,INTERFACE_INCLUDE_DIRECTORIES>)
 target_link_libraries(syncterm xpdev)
 
-find_package(CIOLib REQUIRED)
-include(${CIOLib_CONFIG})
+if(NOT ${PARENT_DIRECTORY})
+	find_package(CIOLib REQUIRED)
+	include(${CIOLib_CONFIG})
+ENDIF()
 add_dependencies(syncterm ciolib)
 target_include_directories(syncterm PRIVATE "${CIOLib_DIR}/../../../include")
 target_compile_definitions(syncterm PRIVATE $<TARGET_PROPERTY:ciolib,INTERFACE_COMPILE_DEFINITIONS>)
 target_include_directories(syncterm PRIVATE $<TARGET_PROPERTY:ciolib,INTERFACE_INCLUDE_DIRECTORIES>)
 target_link_libraries(syncterm ciolib)
 
-find_package(UIFC REQUIRED)
-include(${UIFC_CONFIG})
+if(NOT ${PARENT_DIRECTORY})
+	find_package(UIFC REQUIRED)
+	include(${UIFC_CONFIG})
+ENDIF()
 add_dependencies(syncterm uifc)
 target_include_directories(syncterm PRIVATE "${UIFC_DIR}/../../../include")
 target_compile_definitions(syncterm PRIVATE $<TARGET_PROPERTY:uifc,INTERFACE_COMPILE_DEFINITIONS>)