We do it like this:
- in projectA/CMakeLists.txt:
----
set( ProjectA_IN_TREE TRUE CACHE INTERNAL "" )
----
- in projectA/ProjectA-config.cmake.in (which is converted to
ProjectA-config.cmake by a call to configure_package_config_file from
the CMakePackageConfigHelpers module):
----
if( ProjectA_IN_TREE )
add_library( ProjectA_LibraryName ALIAS LibraryName )
else()
include("${CMAKE_CURRENT_LIST_DIR}/ProjectA-targets.cmake")
endif()
----
The superbuild then just add_subdirectory(projectA) before
add_subdirectory(pojectB), and projectB uses libraries from projectA
just like it would if there was no superbuild.
--
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