liberror-backtrace.7


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.TH LIBERROR-BACKTRACE 7 2019-04-14 liberror
.SH NAME
liberror-backtrace \- implementation of backtrace for liberror
.SH DESCRIPTION
The
.B liberror-backtrace
library implements the backtrace functionality for the
.B liberror
library. Specifically, it replaces the implementations of the
.BR liberror_save_backtrace (3)
and
.BR liberror_print_backtrace (3)
functions with implementations that actually save and print
the backtrace. There is no header files associated with the
.B liberror-backtrace
library it is simply used by linking. If
.B liberror
is dynamically linked,
.B liberror-backtrace shall
be linked with
.I -lerror-backtrace -ldw -lunwind
and
.I -lerror-backtrace
shall be specified before
.IR -lerror .
If
.B liberror
is statically linked,
.B liberror-backtrace shall
be linked with
.I -Wl,--whole-archive -lerror-backtrace -Wl,--no-whole-archive -ldw -lunwind
and it does not matter where whether
.I -lerror-backtrace
is specified before or after
.IR -lerror .
Thus, a library using
.I -lerror
can always be linked with
.I -Wl,--whole-archive -lerror-backtrace -Wl,--no-whole-archive -ldw -lunwind -lerror
for
.B liberror
with backtrace support. Alternatively, if
.B liberror
is dynamically linked,
.B liberror-backtrace
can be preloaded with the
.I LD_PRELOAD
environment variable.
.SH EXAMPLES
None.
.SH APPLICATION USAGE
None.
.SH RATIONALE
None.
.SH FUTURE DIRECTIONS
None.
.SH NOTES
None.
.SH SEE ALSO
.BR liberror (7)