107 lines
3.5 KiB
CMake
107 lines
3.5 KiB
CMake
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#
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# Implementation selection
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#
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set(SIMDJSON_ALL_IMPLEMENTATIONS fallback westmere haswell arm64 ppc64)
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set(
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SIMDJSON_IMPLEMENTATION ""
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CACHE STRING "\
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Semicolon-separated list of implementations to include \
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(${SIMDJSON_ALL_IMPLEMENTATIONS}). If this is not set, any implementations \
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that are supported at compile time and may be selected at runtime will be \
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included."
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)
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set(
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SIMDJSON_EXCLUDE_IMPLEMENTATION ""
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CACHE STRING "\
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Semicolon-separated list of implementations to exclude \
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(haswell/westmere/arm64/ppc64/fallback). By default, excludes any \
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implementations that are unsupported at compile time or cannot be selected at \
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runtime."
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)
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foreach(var IN ITEMS IMPLEMENTATION EXCLUDE_IMPLEMENTATION)
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set(var "SIMDJSON_${var}")
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foreach(impl IN LISTS "${var}")
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if(NOT impl IN_LIST SIMDJSON_ALL_IMPLEMENTATIONS)
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message(ERROR "\
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Implementation ${impl} found in ${var} not supported by simdjson. \
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Possible implementations: ${SIMDJSON_ALL_IMPLEMENTATIONS}")
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endif()
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endforeach()
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endforeach()
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macro(flag_action action var val)
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message(STATUS "${action} implementation ${impl} due to ${var}=${${var}}")
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simdjson_add_props(
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target_compile_definitions PUBLIC
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"SIMDJSON_IMPLEMENTATION_${impl_upper}=${val}"
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)
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endmacro()
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foreach(impl IN LISTS SIMDJSON_ALL_IMPLEMENTATIONS)
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string(TOUPPER "${impl}" impl_upper)
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if(impl IN_LIST SIMDJSON_EXCLUDE_IMPLEMENTATION)
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flag_action(Excluding SIMDJSON_EXCLUDE_IMPLEMENTATION 0)
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elseif(impl IN_LIST SIMDJSON_IMPLEMENTATION)
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flag_action(Including SIMDJSON_IMPLEMENTATION 1)
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elseif(SIMDJSON_IMPLEMENTATION)
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flag_action(Excluding SIMDJSON_IMPLEMENTATION 0)
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endif()
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endforeach()
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# TODO make it so this generates the necessary compiler flags to select the
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# given impl as the builtin automatically!
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set(
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SIMDJSON_BUILTIN_IMPLEMENTATION ""
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CACHE STRING "\
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Select the implementation that will be used for user code. Defaults to the \
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most universal implementation in SIMDJSON_IMPLEMENTATION (in the order \
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${SIMDJSON_ALL_IMPLEMENTATIONS}) if specified; otherwise, by default the \
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compiler will pick the best implementation that can always be selected given \
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the compiler flags."
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)
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if(NOT SIMDJSON_BUILTIN_IMPLEMENTATION STREQUAL "")
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simdjson_add_props(
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target_compile_definitions PUBLIC
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"SIMDJSON_BUILTIN_IMPLEMENTATION=${SIMDJSON_BUILTIN_IMPLEMENTATION}"
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)
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else()
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# Pick the most universal implementation out of the selected implementations
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# (if any)
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foreach(impl IN LISTS SIMDJSON_ALL_IMPLEMENTATIONS)
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if(
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impl IN_LIST SIMDJSON_IMPLEMENTATION
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AND NOT impl IN_LIST SIMDJSON_EXCLUDE_IMPLEMENTATION
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)
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message(STATUS "\
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Selected implementation ${impl} as builtin implementation based on \
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${SIMDJSON_IMPLEMENTATION}")
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simdjson_add_props(
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target_compile_definitions PUBLIC
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"SIMDJSON_BUILTIN_IMPLEMENTATION=${impl}"
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)
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break()
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endif()
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endforeach()
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endif()
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foreach(impl IN LISTS SIMDJSON_ALL_IMPLEMENTATIONS)
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string(TOUPPER "${impl}" impl_upper)
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option(
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"SIMDJSON_IMPLEMENTATION_${impl_upper}"
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"Include the ${impl} implementation"
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ON
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)
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mark_as_advanced("SIMDJSON_IMPLEMENTATION_${impl_upper}")
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if(NOT "${SIMDJSON_IMPLEMENTATION_${impl_upper}}")
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message(DEPRECATION "\
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SIMDJSON_IMPLEMENTATION_${impl_upper} is deprecated. \
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Use SIMDJSON_IMPLEMENTATION=-${impl} instead")
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simdjson_add_props(
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target_compile_definitions PUBLIC
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"SIMDJSON_IMPLEMENTATION_${impl_upper}=0"
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)
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endif()
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endforeach()
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