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