On 01/14/2016 10:39 AM, Rob Latham wrote:

For example, our configure also found the backtrace_symbols and backtrace_create_state functions. These are often part of GCC, or maybe standalone in the libbacktrace package. On your system (as is common on many systems) there is no backtrace.h

I will send you a patch to try out that will only use libunwind if it finds both the header file and the symbols.

Please let me know if the attached patch solves your problem. ==rob