cmake install multiple targets single export - cmake

Question

I have built and installed a cmake package (Foo) and was able to import it into another project (Bar) using find_package(Foo COMPONENTS A B C REQUIRED CONFIG). In this scenario, Foo::A depends on Foo::B and Foo::B is actually made up of 3 shared libraries Ba Bb Bc. In Bar when I call target_link_libraries(Bar PUBLIC Foo::A Foo::B) I get an error message "The following targets are referenced, but are missing: Foo::Bb". If I then edit find_package and target_link_libraries to include Foo::Bb I then get an error "include could not find requested file .../FooBbTargets.cmake".
The code to export/install Foo::B is below:
# using cmake 3.21
# Ba Bb Bc defined above as shared libraries
# Ba has the same name as B
# Bc is linked to Bb, Bb is linked to Ba, links are all public.
include(GNUInstallDirs)
install(
TARGETS Ba Bb Bc
EXPORT FooBTargets
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)
install(
FILES
# list of header files
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
)
install(
EXPORT FooBTargets
FILE FooBTargets.cmake
NAMESPACE Foo::
DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/Foo
)
export(
EXPORT FooBTargets
FILE "${CMAKE_CURRENT_BINARY_DIR}/cmake/FooBTargets.cmake"
NAMESPACE Foo::
)
Ideally I would actually like to link to just Foo rather than having to list the components separately. It looks like my current solution is to turn each of the shared libraries in B into their own components and link to them individually but I would prefer not to.
Relevant part of top level CMakeLists.txt for Foo
# our program only needs to support windows
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
set(CONFIGFILEINSTALLDIR lib/cmake/Foo)
set(LIBRARY_INSTALL_DIR lib)
set(INCLUDE_INSTALL_DIR include)
include(CMakePackageConfigHelpers)
configure_package_config_file(
"${CMAKE_CURRENT_SOURCE_DIR}/FooConfig.cmake.in"
"${CMAKE_CURRENT_BINARY_DIR}/FooConfig.cmake"
INSTALL_DESTINATION "${CONFIGFILEINSTALLER}"
PATH_VARS
LIBRARY_INSTALL_DIR
INCLUDE_INSTALL_DIR
)
write_basic_package_version_file(
${CMAKE_BINARY_DIR}/cmake/FooConfigVersion.cmake
VERSION ${PACKAGE_VERSION}
COMPATIBILITY SameMajorVersion
)
install(
FILES
"${CMAKE_CURRENT_BINARY_DIR}/FooConfig.cmake"
"${CMAKE_CURRENT_BINARY_DIR}/cmake/FooConfigVersion.cmake"
DESTINATION "${CONFIGFILEINSTALLER}"
)
FooConfig.cmake.in
#PACKAGE_INIT#
set_and_check(Foo_INCLUDE_DIRS "#PACKAGE_INCLUDE_INSTALL_DIR#")
set_and_check(Foo_LIBRARY_DIRS "#PACKAGE_LIBRARY_INSTALL_DIR#")
set(_supported_components A B C)
foreach(_comp ${Foo_FIND_COMPONENTS})
if(NOT _comp IN_LIST _supported_components)
set(Foo_FOUND False)
endif()
include("${CMAKE_CURRENT_LIST_DIR}/Foo${_comp}Targets.cmake")
endforeach()
check_required_components(Foo)