Fix build on non-glibc systems
execinfo.h may be not implemented by the libc, but by a separate library, so try libexecinfo.
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
execinfo.h may be not implemented by the libc, but by a separate library, so try libexecinfo.