/lib/libc.so.6: undefined reference to `_dl_lookup_versioned_symbol_skip@GLIBC_P
RIVATE'
/lib/libc.so.6: undefined reference to `_dl_lookup_versioned_symbol@GLIBC_PRIVAT
E'
/lib/libc.so.6: undefined reference to `_dl_start_profile@GLIBC_PRIVATE'
../lib/libform.so: undefined reference to `regexec@GLIBC_2.3.4'
/lib/libc.so.6: undefined reference to `_dl_check_map_versions@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_get_origin@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_dst_substitute@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_debug_state@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_init@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_dst_count@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_signal_error@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_debug_printf@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_map_object_deps@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_unload_cache@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_relocate_object@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_tls_symaddr@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `__libc_stack_end@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_catch_error@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_lookup_symbol_skip@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_lookup_symbol@GLIBC_PRIVATE'
/lib/libc.so.6: undefined reference to `_dl_map_object@GLIBC_PRIVATE'
collect2: ld returned 1 exit status
make[1]: *** [demo] Error 1
make[1]: Leaving directory `/mnt/lfs/sources/ncurses-5.4/c++'
make: *** [all] Error 2