I get errors when I try to compile it on my system. $ g++ -v gcc version 4.4.6 20120305 (Red Hat 4.4.6-4) (GCC) $ g++ -c backward.cpp In file included

I get errors when I try to compile it on my system. $ g++ -v gcc version 4.4.6 20120305 (Red Hat 4.4.6-4) (GCC) $ g++ -c backward.cpp In file included from backward.cpp:26: backward.hpp: In member function ‘_Unwind_Reason_Code backward::details::Unwinder<F>::backtrace(_Unwind_Context*)’: backward.hpp:595: error: there are no arguments to ‘_Unwind_GetIPInfo’ that depend on a template parameter, so a declaration of ‘_Unwind_GetIPInfo’ must be available backward.hpp:595: note: (if you use ‘-fpermissive’, G++ will accept your code, but allowing the use of an undeclared name is deprecated) backward.hpp: In member function ‘_Unwind_Reason_Code backward::details::Unwinder<F>::backtrace(_Unwind_Context*) [with F = backward::StackTraceImpl<backward::system_tag::linux_tag>::callback]’: backward.hpp:587: instantiated from ‘static _Unwind_Reason_Code backward::details::Unwinder<F>::backtrace_trampoline(_Unwind_Context*, void*) [with F = backward::StackTraceImpl<backward::system_tag::linux_tag>::callback]’ backward.hpp:576: instantiated from ‘size_t backward::details::Unwinder<F>::operator()(F&, size_t) [with F = backward::StackTraceImpl<backward::system_tag::linux_tag>::callback]’ backward.hpp:612: instantiated from ‘size_t backward::details::unwind(F, size_t) [with F = backward::StackTraceImpl<backward::system_tag::linux_tag>::callback]’ backward.hpp:628: instantiated from here backward.hpp:595: error: ‘_Unwind_GetIPInfo’ was not declared in this scope