Fix the following build failure on rtorrent raised on uclibc and musl
since the addition of libexecinfo package in commit
eea8ba446c:
/home/buildroot/autobuild/instance-1/output-1/host/opt/ext-toolchain/bin/../lib/gcc/x86_64-buildroot-linux-musl/10.3.0/../../../../x86_64-buildroot-linux-musl/bin/ld: /home/buildroot/autobuild/instance-1/output-1/host/x86_64-buildroot-linux-musl/sysroot/usr/lib/libtorrent.so: undefined reference to `backtrace_symbols'
Fixes:
- http://autobuild.buildroot.org/results/6cb4ba56fc0a3a8bd02b246ab9bc82edaa552ad9
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>