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# generates BuildInfo.h
#
# this module expects
# ETH_SOURCE_DIR - main CMAKE_SOURCE_DIR
# ETH_DST_DIR - main CMAKE_BINARY_DIR
# ETH_BUILD_TYPE
# ETH_BUILD_PLATFORM
#
# example usage:
# cmake -DETH_SOURCE_DIR=. -DETH_DST_DIR=build -DETH_BUILD_TYPE=Debug -DETH_BUILD_PLATFORM=mac -P scripts/buildinfo.cmake
if (NOT ETH_BUILD_TYPE)
set(ETH_BUILD_TYPE "unknown")
endif()
if (NOT ETH_BUILD_PLATFORM)
set(ETH_BUILD_PLATFORM "unknown")
endif()
set(INFILE "${ETH_SOURCE_DIR}/BuildInfo.h.in")
set(TMPFILE "${ETH_DST_DIR}/BuildInfo.h.tmp")
set(OUTFILE "${ETH_DST_DIR}/BuildInfo.h")
configure_file("${INFILE}" "${TMPFILE}")
include(CMakeParseArguments)
macro(replace_if_different SOURCE DST)
set(extra_macro_args ${ARGN})
set(options CREATE)
set(one_value_args)
set(multi_value_args)
cmake_parse_arguments(REPLACE_IF_DIFFERENT "${options}" "${one_value_args}" "${multi_value_args}" "${extra_macro_args}")
if (REPLACE_IF_DIFFERENT_CREATE AND (NOT (EXISTS "${DST}")))
file(WRITE "${DST}" "")
endif()
execute_process(COMMAND ${CMAKE_COMMAND} -E compare_files "${SOURCE}" "${DST}" RESULT_VARIABLE DIFFERENT)
if (DIFFERENT)
execute_process(COMMAND ${CMAKE_COMMAND} -E rename "${SOURCE}" "${DST}")
else()
execute_process(COMMAND ${CMAKE_COMMAND} -E remove "${SOURCE}")
endif()
endmacro()
replace_if_different("${TMPFILE}" "${OUTFILE}" CREATE)