```
dpkg-shlibdeps: error: no dependency information found for /lib/x86_64-linux-gnu/libgcc_s.so.1 (used by debian/libfeel++1/usr/lib/libfeelpp.so.1.0.0)
Hint: check if the library actually comes from a package.
dh_shlibdeps: dpkg-shlibdeps -Tdebian/libfeel++1.substvars debian/libfeel++1/usr/lib/libfeelpp_gflags_nothreads.so.2.2.0 debian/libfeel++1/usr/lib/libfeelpp_gflags.so.2.2.0 debian/libfeel++1/usr/lib/libfeelpp.so.1.0.0 debian/libfeel++1/usr/lib/libfeelpp_glog.so.0 debian/libfeel++1/usr/lib/libfeelpp_ginac.so.6.0.1 debian/libfeel++1/usr/lib/x86_64-linux-gnu/libfeelpp_nlopt.so.0.9.0 debian/libfeel++1/usr/lib/libfeelpp_metis.so returned exit code 2
```