cmake：常规 （SHARED） 库，依赖于仅标头 （INTERFACE） 库

问：

包括仅标头依赖项的路径，这些依赖项不会传播到非仅标头库目标。

CMake 3.25.3，GCC 12.2.0。

1. 我有一个仅标头的库，我们称之为：foo

# foo CMakeLists.txt
add_library(foo INTERFACE)

foo存在以提供一些 C++ 头文件

# foo CMakeLists.txt 

target_include_directories(foo INTERFACE
  $<INSTALL_INTERFACE:include>
  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>)

install(
  TARGETS foo
  EXPORT fooTargets
  LIBRARY DESTINATION lib COMPONENT Runtime
  ARCHIVE DESTINATION lib COMPONENT Development
  RUNTIME DESTINATION lib COMPONENT Runtime
  PUBLIC_HEADER DESTINATION include COMPONENT Development
  BUNDLE DESTINATION bin COMPONENT Runtime)

2. foo生成+导出 .cmake 配置文件到驱动器find_package

# foo cmake/fooConfig.cmake.in
@PACKAGE_INIT@
include("${CMAKE_CURRENT_LIST_DIR}/fooTargets.cmake")
check_required_components("@PROJECT_NAME@")

和

# foo CMakeLists.txt
include(CMakePackageConfigHelpers)
write_basic_package_version_file(
  "${PROJECT_BINARY_DIR}/fooConfigVersion.cmake"
  VERSION 1.0
  COMPATIBILITY AnyNewerVersion)
configure_package_config_file(
  "${PROJECT_SOURCE_DIR}/cmake/fooConfig.cmake.in"
  "${PROJECT_BINARY_DIR}/fooConfigVersion.cmake
  INSTALL_DESTINATION lib/cmake/foo)
install(
  EXPORT fooTargets
  DESTINATION lib/cmake/foo)
install(
  FILES
  "${PROJECT_BINARY_DIR}/fooConfigVersion.cmake"
  "${PROJECT_BINARY_DIR}/fooConfig.cmake"
  DESTINATION lib/cmake/foo)

3. 我有一个共享库，我们称之为 .
   位于单独的代码库中barbar

# bar CMakeLists.txt
find_package(foo CONFIG REQUIRED)
add_library(bar SHARED bar.cpp)
target_include_directories(bar PUBLIC 
  $<INSTALL_INTERFACE:include>
  $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>

4. bar需要头文件来编译：foo

# bar CMakeLists.txt
target_link_libraries(bar INTERFACE foo)

5. 问题编译不接收标头：bar.cppfoo

$ make VERBOSE=1 
g++ -Ipath/to/bar/include path/to/bar.cpp ...   # path/to/foo/include missing

这仅发生在 INTERFACE 依赖项上。 如果我将 foo 设置为 SHARED 目标 + 在 bar 中将其用作 PUBLIC 依赖项，那么 foo 标头 转发到编译器

6. （丑陋）解决方法：当依赖于仅标头库时，请添加提示：

# bar CMakeLists.txt

get_target_property(tmp foo INTERFACE_INCLUDE_DIRECTORIES)
set_property(
  TARGET bar
  APPEND PROPERTY INCLUDE_DIRECTORIES ${tmp})

问题

有必要吗？我的仅标题包装有问题吗？
fooConfig.cmake.in 中缺少一些成分？