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# generates BuildInfo.h
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#
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# this module expects
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# ETH_SOURCE_DIR - main CMAKE_SOURCE_DIR
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# ETH_DST_DIR - main CMAKE_BINARY_DIR
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# ETH_BUILD_TYPE
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# ETH_BUILD_PLATFORM
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#
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# example usage:
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# cmake -DETH_SOURCE_DIR=. -DETH_DST_DIR=build -DETH_BUILD_TYPE=Debug -DETH_BUILD_PLATFORM=mac -P scripts/buildinfo.cmake
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if (NOT ETH_BUILD_TYPE)
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set(ETH_BUILD_TYPE "unknown")
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endif()
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if (NOT ETH_BUILD_PLATFORM)
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set(ETH_BUILD_PLATFORM "unknown")
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endif()
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set(INFILE "${ETH_SOURCE_DIR}/BuildInfo.h.in")
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set(TMPFILE "${ETH_DST_DIR}/BuildInfo.h.tmp")
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set(OUTFILE "${ETH_DST_DIR}/BuildInfo.h")
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configure_file("${INFILE}" "${TMPFILE}")
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include(CMakeParseArguments)
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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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replace_if_different("${TMPFILE}" "${OUTFILE}" CREATE)
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