cmake/LinkPackage.cmake

   1 function(link_package NAME)
   2     cmake_parse_arguments(LP "ENCOURAGED" "TARGET" "" ${ARGN})
   3
   4     if(${NAME}_FOUND)
   5         string(TOUPPER "${NAME}" UCNAME)
   6         # Some libraries have a dash, which is not allowed in a preprocessor macro.
   7         string(REPLACE "-" "_" UCNAME "${UCNAME}")
   8
   9         add_definitions(-DWITH_${UCNAME})
  10         # Some libraries' cmake packages (looking at you, SDL2) leave trailing whitespace in the link commands,
  11         # which (later) cmake considers to be an error. Work around this with by stripping the incoming string.
  12         if(LP_TARGET AND TARGET ${LP_TARGET})
  13             string(STRIP "${LP_TARGET}" LP_TARGET)
  14             target_link_libraries(openttd_lib ${LP_TARGET})
  15             message(STATUS "${NAME} found -- -DWITH_${UCNAME} -- ${LP_TARGET}")
  16         else()
  17             string(STRIP "${${NAME}_LIBRARY}" ${NAME}_LIBRARY)
  18             string(STRIP "${${NAME}_LIBRARIES}" ${NAME}_LIBRARIES)
  19             include_directories(${${NAME}_INCLUDE_DIRS} ${${NAME}_INCLUDE_DIR})
  20             target_link_libraries(openttd_lib ${${NAME}_LIBRARIES} ${${NAME}_LIBRARY})
  21             message(STATUS "${NAME} found -- -DWITH_${UCNAME} -- ${${NAME}_INCLUDE_DIRS} ${${NAME}_INCLUDE_DIR} -- ${${NAME}_LIBRARIES} ${${NAME}_LIBRARY}")
  22         endif()
  23     elseif(LP_ENCOURAGED)
  24         message(WARNING "${NAME} not found; compiling OpenTTD without ${NAME} is strongly discouraged")
  25     endif()
  26 endfunction()