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##### check if GLIBC >= 2.1 compatible backtrace facility exists
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if ( CMAKE_MAJOR_VERSION LESS "3" )
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check_symbol_exists( backtrace "execinfo.h" HAVE_BACKTRACE )
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if ( HAVE_BACKTRACE )
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set ( Backtrace_LIBRARY "" CACHE STRING "Library providing backtrace(3), empty for default set of libraries" )
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set ( Backtrace_HEADER "execinfo.h" CACHE STRING "Header providing backtrace(3) facility" )
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endif ()
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else ()
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find_package( Backtrace )
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if ( Backtrace_FOUND )
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set ( HAVE_BACKTRACE 1 CACHE INTERNAL "" )
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endif ()
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endif ()
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if( NOT HAVE_BACKTRACE )
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tde_message_fatal( "bactrace function is required but not available on your system")
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endif()
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