c++ - CMake 安装(子目录中的目标)

Question

考虑以下 CMakeLists.txt 文件:

add_subdirectory(execA)
add_subdirectory(libB)

install(TARGETS execA libB
        RUNTIME DESTINATION bin
        LIBRARY DESTINATION lib
        ARCHIVE DESTINATION lib)

我收到以下错误:

install TARGETS given target "execA" which does not exist in this
  directory

execA 和 libB 有自己的 CMakeList.txt 文件，也位于 project 目录下作为构建目录，我正在运行 cmake (cmake ..):

project
  |------ CMakeList.txt (the one with the code)
  |----execA
  |      \- .cpp, .hpp and CMakelist.txt
  |----libB
  |      \- .cpp, .hpp and CMakelist.txt
  |---- lib
  |---- bin
  \---- build (where I´m commanding: $ cmake ..

如何解决这个错误？

Answer 1

根据this bugreport , install(TARGETS) 命令流只接受在同一目录中创建的目标。

因此，您需要将 add_library() 调用移动到顶级目录，或者将 install(TARGETS) 调用拆分为每个目标的调用，然后移动每个将它们放入相应的子目录中。

自 CMake 3.13 install(TARGETS) can work即使是在其他目录中创建的目标。

install(TARGETS) can install targets that were created in other directories. When using such cross-directory install rules, running make install (or similar) from a subdirectory will not guarantee that targets from other directories are up-to-date.