3
我正在尝试仅使用显式模板实例进行编译。显式模板实例化
考虑这个虚拟片断
#include <vector>
template struct std::allocator<int>;
template struct std::vector<int, std::allocator<int>>;
void fun(){
std::vector<int> v;
}
int main(){
fun();
};
我想与
g++ -std=c++11 -fno-implicit-templates fun.cc
我预计这个工作编译它,但是它抱怨解析引用到std::vector
成员函数。不应该将成员函数与std::vector
类一起自动实例化吗?我怎样才能使它工作?
编译器错误是:
/tmp/cc1QxQUn.o: In function `std::vector<int, std::allocator<int> >::push_back(int const&)':
vec.cc:(.text._ZNSt6vectorIiSaIiEE9push_backERKi[_ZNSt6vectorIiSaIiEE9push_backERKi]+0x65): undefined reference to `void std::vector<int, std::allocator<int> >::_M_emplace_back_aux<int const&>(int const&)'
/tmp/cc1QxQUn.o: In function `std::vector<int, std::allocator<int> >::push_back(int&&)':
vec.cc:(.text._ZNSt6vectorIiSaIiEE9push_backEOi[_ZNSt6vectorIiSaIiEE9push_backEOi]+0x2a): undefined reference to `void std::vector<int, std::allocator<int> >::emplace_back<int>(int&&)'
/tmp/cc1QxQUn.o: In function `std::vector<int, std::allocator<int> >::insert(__gnu_cxx::__normal_iterator<int const*, std::vector<int, std::allocator<int> > >, int const&)':
vec.cc:(.text._ZNSt6vectorIiSaIiEE6insertEN9__gnu_cxx17__normal_iteratorIPKiS1_EERS4_[_ZNSt6vectorIiSaIiEE6insertEN9__gnu_cxx17__normal_iteratorIPKiS1_EERS4_]+0x14d): undefined reference to `void std::vector<int, std::allocator<int> >::_M_insert_aux<int>(__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > >, int&&)'
vec.cc:(.text._ZNSt6vectorIiSaIiEE6insertEN9__gnu_cxx17__normal_iteratorIPKiS1_EERS4_[_ZNSt6vectorIiSaIiEE6insertEN9__gnu_cxx17__normal_iteratorIPKiS1_EERS4_]+0x166): undefined reference to `void std::vector<int, std::allocator<int> >::_M_insert_aux<int const&>(__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > >, int const&)'
/tmp/cc1QxQUn.o: In function `std::vector<int, std::allocator<int> >::insert(__gnu_cxx::__normal_iterator<int const*, std::vector<int, std::allocator<int> > >, int&&)':
vec.cc:(.text._ZNSt6vectorIiSaIiEE6insertEN9__gnu_cxx17__normal_iteratorIPKiS1_EEOi[_ZNSt6vectorIiSaIiEE6insertEN9__gnu_cxx17__normal_iteratorIPKiS1_EEOi]+0x32): undefined reference to `__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > > std::vector<int, std::allocator<int> >::emplace<int>(__gnu_cxx::__normal_iterator<int const*, std::vector<int, std::allocator<int> > >, int&&)'
/tmp/cc1QxQUn.o: In function `void std::vector<int, std::allocator<int> >::_M_assign_dispatch<int const*>(int const*, int const*, std::__false_type)':
vec.cc:(.text._ZNSt6vectorIiSaIiEE18_M_assign_dispatchIPKiEEvT_S5_St12__false_type[_ZNSt6vectorIiSaIiEE18_M_assign_dispatchIPKiEEvT_S5_St12__false_type]+0x2d): undefined reference to `void std::vector<int, std::allocator<int> >::_M_assign_aux<int const*>(int const*, int const*, std::forward_iterator_tag)'
/tmp/cc1QxQUn.o: In function `void std::vector<int, std::allocator<int> >::_M_insert_dispatch<int const*>(__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > >, int const*, int const*, std::__false_type)':
vec.cc:(.text._ZNSt6vectorIiSaIiEE18_M_insert_dispatchIPKiEEvN9__gnu_cxx17__normal_iteratorIPiS1_EET_S9_St12__false_type[_ZNSt6vectorIiSaIiEE18_M_insert_dispatchIPKiEEvN9__gnu_cxx17__normal_iteratorIPiS1_EET_S9_St12__false_type]+0x32): undefined reference to `void std::vector<int, std::allocator<int> >::_M_range_insert<int const*>(__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > >, int const*, int const*, std::forward_iterator_tag)'
/tmp/cc1QxQUn.o: In function `void std::vector<int, std::allocator<int> >::_M_assign_dispatch<std::move_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > > > >(std::move_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > > >, std::move_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > > >, std::__false_type)':
vec.cc:(.text._ZNSt6vectorIiSaIiEE18_M_assign_dispatchISt13move_iteratorIN9__gnu_cxx17__normal_iteratorIPiS1_EEEEEvT_S9_St12__false_type[_ZNSt6vectorIiSaIiEE18_M_assign_dispatchISt13move_iteratorIN9__gnu_cxx17__normal_iteratorIPiS1_EEEEEvT_S9_St12__false_type]+0x2d): undefined reference to `void std::vector<int, std::allocator<int> >::_M_assign_aux<std::move_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > > > >(std::move_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > > >, std::move_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > > >, std::forward_iterator_tag)'
collect2: error: ld returned 1 exit status