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25 lines
742 B
25 lines
742 B
10 years ago
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#
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# renames the file if it is different from its destination
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include(CMakeParseArguments)
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#
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macro(replace_if_different SOURCE DST)
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set(extra_macro_args ${ARGN})
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set(options CREATE)
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set(one_value_args)
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set(multi_value_args)
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cmake_parse_arguments(REPLACE_IF_DIFFERENT "${options}" "${one_value_args}" "${multi_value_args}" "${extra_macro_args}")
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if (REPLACE_IF_DIFFERENT_CREATE AND (NOT (EXISTS "${DST}")))
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file(WRITE "${DST}" "")
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endif()
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execute_process(COMMAND ${CMAKE_COMMAND} -E compare_files "${SOURCE}" "${DST}" RESULT_VARIABLE DIFFERENT)
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if (DIFFERENT)
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execute_process(COMMAND ${CMAKE_COMMAND} -E rename "${SOURCE}" "${DST}")
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else()
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execute_process(COMMAND ${CMAKE_COMMAND} -E remove "${SOURCE}")
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endif()
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endmacro()
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