CMake:多库包导出中的依赖项管理

我有一个名为MYLIBS的包，由两个库lib1和lib2组成，我想通过包的配置文件导出它们。项目结构如下：

├── Lib1
│   ├── CMakeLists.txt
│   ├── lib1-class.cpp
│   └── lib1-class.h
├── lib2
│   └── CMakeLists.txt
│   ├── lib2-class.cpp
│   ├── lib2-class.h
├── cmake
│   └── LIBSConfig.cmake.in
├── CMakeLists.txt

在 lib2 中，我有：

add_library(lib2
        STATIC
        ${SOURCE_FILES}
        )
target_include_directories(lib2 PRIVATE /path/to/lib1)
target_link_libraries(lib2 PUBLIC lib1)
add_dependencies(lib2 lib1)
install(
        TARGETS
        lib2
        DESTINATION
        lib/MYLIBS/lib2
        EXPORT
        lib2Exports
)
install(
        EXPORT
        lib2Exports
        DESTINATION
        lib/MYLIBS/lib2
)

相同，只是 lib1 没有add_dependencies()和target_include/link()因为它没有。

在我的配置文件模板中，我有：

@PACKAGE_INIT@
## PROJECT_LIBRARIES is filled-in during the package build. in this case : lib1,lib2
set(@PROJECT_NAME@_LIBRARIES @PROJECT_LIBRARIES@)
## The public variables to be used by the client project:
#PROJECT_NAME_INCLUDE_DIRS is all the include paths
#PROJECT_NAME_LIBRARIES is the name of all the libraries
unset(@PROJECT_NAME@_INCLUDE_DIRS)
foreach(INCLUDE_DIR ${INCLUDE_DIRS})
    set_and_check(@PROJECT_NAME@_INCLUDE_DIR ${INCLUDE_DIR})
    list(APPEND @PROJECT_NAME@_INCLUDE_DIRS ${@PROJECT_NAME@_INCLUDE_DIR})
endforeach()
## PACKAGE_PACKAGE_DIRNAME_include is filled-in during the package build
foreach(lib ${@PROJECT_NAME@_LIBRARIES})
    list(APPEND INCLUDE_DIRS @PACKAGE_PACKAGE_DIRNAME_include@/${lib})
endforeach(lib)
# Looks up the information about the exported targets in this package
foreach(lib ${@PROJECT_NAME@_LIBRARIES})
    if(NOT TARGET ${lib})
        include(@PACKAGE_PACKAGE_DIRNAME_lib@/${lib}/${lib}Exports.cmake)
    endif()
endforeach(lib)

因此，我逐个浏览库的导出文件并包含它们。问题是我必须以正确的顺序执行此操作，即首先是lib1，然后是lib2，否则我在读取配置文件时出现错误 FindPackage().

我不太确定传递依赖项将如何工作 tbh。由于这些库是从同一个导出文件中include()的，考虑到我们知道依赖项的导出文件将在系统上的位置，有没有办法告诉 CMake 配置文件或 lib2 导出文件中的依赖项？

我可以看到target_link_libraries（）有一个公共选项。我应该如何使用它？会有什么帮助吗？