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function(re2c_bootstrap_syntax source target)
set(bootstrap "${CMAKE_CURRENT_SOURCE_DIR}/bootstrap/${target}")
if(RE2C_REBUILD_SYNTAX)
get_filename_component(targetdir "${target}" DIRECTORY)
add_custom_command(
OUTPUT "${target}"
COMMAND "${CMAKE_COMMAND}" -E make_directory ${targetdir}
COMMAND "${PYTHON}" "${re2c_stx2cpp}" "${CMAKE_CURRENT_SOURCE_DIR}/${source}" "${target}"
COMMAND "${CMAKE_COMMAND}" -E copy_if_different "${target}" "${bootstrap}"
DEPENDS "${source}" "${re2c_stx2cpp}"
)
else()
add_custom_command(
OUTPUT "${target}"
COMMAND "${CMAKE_COMMAND}" -E copy "${bootstrap}" "${target}"
DEPENDS "${bootstrap}"
COMMENT "Copying bootstrap syntax file, reconfigure with RE2C_REBUILD_PARSERS to regenerate"
)
endif()
endfunction()
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