make install就是運行該命令的內容。
install(FILES ......)
install(TARGETS ......)
FILES爲普通的文本文件，PROGRAMS指的是非目標文件的可執行程序(如腳本文件)。
install(<FILES|PROGRAMS> files...
TYPE <type> | DESTINATION <dir>
[PERMISSIONS permissions...]
[CONFIGURATIONS [Debug|Release|...]]
[COMPONENT <component>]
[RENAME <name>] [OPTIONAL] [EXCLUDE_FROM_ALL])
參數中的TARGET可以是很多種目標文件，最常見的是通過ADD_EXECUTABLE或者ADD_LIBRARY定義的目標文件，即可執行二進制、動態庫、靜態庫.
install(TARGETS targets... [EXPORT <export-name>]
[[ARCHIVE|LIBRARY|RUNTIME|OBJECTS|FRAMEWORK|BUNDLE|
PRIVATE_HEADER|PUBLIC_HEADER|RESOURCE]
[DESTINATION <dir>]
[PERMISSIONS permissions...]
[CONFIGURATIONS [Debug|Release|...]]
[COMPONENT <component>]
[NAMELINK_COMPONENT <component>]
[OPTIONAL] [EXCLUDE_FROM_ALL]
[NAMELINK_ONLY|NAMELINK_SKIP]
] [...]
[INCLUDES DESTINATION [<dir> ...]]
)