View Compilation Error

0_0_8088692_4346.cpp:4:19: hash_map: No such file or directory
0_0_8088692_4346.cpp:9: error: `hash' is not a template
0_0_8088692_4346.cpp:9: error: explicit specialization of non-template `__gnu_cxx::hash'
0_0_8088692_4346.cpp: In member function `size_t __gnu_cxx::hash::operator()(const std::string&) const':
0_0_8088692_4346.cpp:11: error: `__gnu_cxx::hash' is not a template
0_0_8088692_4346.cpp: In function `int main()':
0_0_8088692_4346.cpp:19: error: `hash_map' undeclared (first use this function)
0_0_8088692_4346.cpp:19: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8088692_4346.cpp:19: error: expected primary-expression before ',' token
0_0_8088692_4346.cpp:19: error: expected primary-expression before "int"
0_0_8088692_4346.cpp:19: error: expected `;' before "int"
0_0_8088692_4346.cpp:26: error: `m' undeclared (first use this function)