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set(OPTIONAL_SUBMODULE_BASEPATH "${PROJECT_SOURCE_DIR}/libs/optional")
if(EXISTS "${OPTIONAL_SUBMODULE_BASEPATH}")
message(STATUS "Using vendored Optional")
# Disable tests
set(OPTIONAL_ENABLE_TESTS
OFF
CACHE BOOL "Build tests of the 'optional' library" FORCE
)
# Include local submodule
add_subdirectory(
"${OPTIONAL_SUBMODULE_BASEPATH}" "${CMAKE_BINARY_DIR}/libs/optional"
EXCLUDE_FROM_ALL
)
# Alias static lib to namespaced variant
add_library(Optional::Optional ALIAS optional)
# Stop here, we're done
return()
endif()
message(
FATAL_ERROR
"Did not find Optional library submodule, did you clone recursively?"
)
|
