Add support for call stack unwinding and function name resolution
| Package | “unwind” Flag Description |
|---|---|
| dev-debug/ltrace | Use sys-libs/libunwind for frame unwinding support |
| dev-debug/strace | Enable stack backtraces (-k flag) via sys-libs/libunwind |
| dev-libs/efl | Enable debug support via sys-libs/libunwind |
| dev-util/perf | Use sys-libs/libunwind for frame unwinding support. |
| media-libs/gstreamer | Enable sys-libs/libunwind usage for better backtrace support in leaks tracer module |
| net-fs/samba | Enable libunwind usage for backtraces |
| www-apache/mod_backtrace | Use sys-libs/libunwind to provide better resolution of function names. |
| x11-base/xorg-server | Enable libunwind usage for backtraces |
| x11-base/xwayland | Enable libunwind usage for backtraces |