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Question

是否可以在cmake add_library函数中放置一个标志，以便减少重复的代码。 e.g。

add_library(somename SHARED

    $<TARGET_OBJECTS:xxx_objs>
    $<TARGET_OBJECTS:yyy_objs>
    $<TARGET_OBJECTS:zzz_objs>
    #if(INCLUDE_SOME_FLAG)
    $<TARGET_OBJECTS:aaa_objs>
    $<TARGET_OBJECTS:bbb_objs>
    $<TARGET_OBJECTS:ccc_objs>
    #endif(INCLUDE_SOME_FLAG)
)

如果我尝试收到错误：＆＃34;找不到源文件：＆＃34; 如果我删除标志它可以正常工作。我猜它认为该标志是一个源文件，任何方式？

Answer 1

set(somename_objs
    $<TARGET_OBJECTS:xxx_objs>
    $<TARGET_OBJECTS:yyy_objs>
    $<TARGET_OBJECTS:zzz_objs>)
if (INCLUDE_SOME_FLAG)
    list(APPEND somename_objs
        $<TARGET_OBJECTS:aaa_objs>
        $<TARGET_OBJECTS:bbb_objs>
        $<TARGET_OBJECTS:ccc_objs>)
endif ()
add_library(somename SHARED ${somename_objs})