diff options
Diffstat (limited to 'gold/symtab.cc')
| -rw-r--r-- | gold/symtab.cc | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gold/symtab.cc b/gold/symtab.cc index 9bee283..f5e2132 100644 --- a/gold/symtab.cc +++ b/gold/symtab.cc @@ -1599,6 +1599,26 @@ Symbol_table::sized_write_globals(const Target* target, { Sized_symbol<size>* sym = static_cast<Sized_symbol<size>*>(p->second); + // Optionally check for unresolved symbols in shared libraries. + // This is controlled by the --allow-shlib-undefined option. We + // only warn about libraries for which we have seen all the + // DT_NEEDED entries. We don't try to track down DT_NEEDED + // entries which were not seen in this link. If we didn't see a + // DT_NEEDED entry, we aren't going to be able to reliably + // report whether the symbol is undefined. + if (sym->source() == Symbol::FROM_OBJECT + && sym->object()->is_dynamic() + && sym->shndx() == elfcpp::SHN_UNDEF + && sym->binding() != elfcpp::STB_WEAK + && !parameters->allow_shlib_undefined()) + { + // A very ugly cast. + Dynobj* dynobj = static_cast<Dynobj*>(sym->object()); + if (!dynobj->has_unknown_needed_entries()) + gold_error(_("%s: undefined reference to '%s'"), + sym->object()->name().c_str(), sym->name()); + } + unsigned int sym_index = sym->symtab_index(); unsigned int dynsym_index; if (dynamic_view == NULL) |