49 lines
1.5 KiB
CMake
49 lines
1.5 KiB
CMake
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set(dep_root "${simdjson_SOURCE_DIR}/dependencies/.cache")
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if(DEFINED ENV{simdjson_DEPENDENCY_CACHE_DIR})
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set(dep_root "$ENV{simdjson_DEPENDENCY_CACHE_DIR}")
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endif()
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function(import_dependency NAME GITHUB_REPO COMMIT)
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message(STATUS "Importing ${NAME} (${GITHUB_REPO}@${COMMIT})")
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set(target "${dep_root}/${NAME}")
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# If the folder exists in the cache, then we assume that everything is as
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# should be and do nothing
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if(EXISTS "${target}")
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set("${NAME}_SOURCE_DIR" "${target}" PARENT_SCOPE)
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return()
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endif()
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set(zip_url "https://github.com/${GITHUB_REPO}/archive/${COMMIT}.zip")
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set(archive "${dep_root}/archive.zip")
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set(dest "${dep_root}/_extract")
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file(DOWNLOAD "${zip_url}" "${archive}")
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file(MAKE_DIRECTORY "${dest}")
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execute_process(
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WORKING_DIRECTORY "${dest}"
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COMMAND "${CMAKE_COMMAND}" -E tar xf "${archive}")
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file(REMOVE "${archive}")
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# GitHub archives only ever have one folder component at the root, so this
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# will always match that single folder
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file(GLOB dir LIST_DIRECTORIES YES "${dest}/*")
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file(RENAME "${dir}" "${target}")
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set("${NAME}_SOURCE_DIR" "${target}" PARENT_SCOPE)
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endfunction()
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# Delegates to the dependency
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macro(add_dependency NAME)
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if(NOT DEFINED "${NAME}_SOURCE_DIR")
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message(FATAL_ERROR "Missing ${NAME}_SOURCE_DIR variable")
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endif()
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add_subdirectory("${${NAME}_SOURCE_DIR}" "${PROJECT_BINARY_DIR}/_deps/${NAME}")
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endmacro()
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function(set_off NAME)
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set("${NAME}" OFF CACHE INTERNAL "")
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endfunction()
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