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option (SIBLING_SEARCH "Search sibling directories before system paths" ON)
mark_as_advanced (SIBLING_SEARCH)
macro(create_module_dir_var module)
if(SIBLING_SEARCH AND NOT ${module}_DIR)
# guess the sibling dir
get_filename_component(_leaf_dir_name ${PROJECT_BINARY_DIR} NAME)
get_filename_component(_parent_full_dir ${PROJECT_BINARY_DIR} DIRECTORY)
get_filename_component(_parent_dir_name ${_parent_full_dir} NAME)
#Try if <module-name>/<build-dir> is used
get_filename_component(_modules_dir ${_parent_full_dir} DIRECTORY)
set(_clone_dir "${module}")
if(IS_DIRECTORY ${_modules_dir}/${_clone_dir}/${_leaf_dir_name})
set(${module}_DIR ${_modules_dir}/${_clone_dir}/${_leaf_dir_name})
else()
string(REPLACE ${PROJECT_NAME} ${_clone_dir} _module_leaf ${_leaf_dir_name})
if(NOT _leaf_dir_name STREQUAL _module_leaf
AND IS_DIRECTORY ${_parent_full_dir}/${_module_leaf})
# We are using build directories named <prefix><module-name><postfix>
set(${module}_DIR ${_parent_full_dir}/${_module_leaf})
elseif(IS_DIRECTORY ${_parent_full_dir}/${_clone_dir} AND
EXISTS ${_parent_full_dir}/${_clone_dir}/CMakeCache.txt)
# All modules are in a common build dir
set(${module}_DIR "${_parent_full_dir}/${_clone_dir}")
endif()
endif()
endif()
if(${module}_DIR AND NOT IS_DIRECTORY ${${module}_DIR})
message(WARNING "Value ${${module}_DIR} passed to variable"
" ${module}_DIR is not a directory")
endif()
endmacro()
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