cmake-include_directories

• include_directories: Add include directories to the build.
  

    include_directories([AFTER|BEFORE] [SYSTEM] dir1 dir2 ...)

  將給定目錄加給編譯器搜索到的包含文件 .默認狀況下，加到目錄列表的最後. 經過設定 CMAKE_include_directories_BEFORE 爲 ON 來改變. 經過使用 BEFORE or AFTER 能夠加在前面或者後面. 若是設定 SYSTEM 選項 編譯器認定爲系統包含目錄.