编译文本查询程序出错,请帮忙查下到底哪错了！

[shan794462554]

正在学c++，编译书上的文本查询程序出错，因水平有限，请帮忙查下到底哪错了！
build log:
g++ -std=c++11 -c /home/mylw/cpp/answers/4-30.cpp -o /home/mylw/cpp/answers/4-30.o
g++ -o /home/mylw/cpp/answers/4-30 /home/mylw/cpp/answers/4-30.o
/home/mylw/cpp/answers/4-30.o：在函数‘runQueries(std::basic_fstream<char, std::char_traits<char> >&)’中：
4-30.cpp:(.text+0xa2)：对‘TextQuery::TextQuery(std::basic_fstream<char, std::char_traits<char> >&)’未定义的引用
4-30.cpp:(.text+0x139)：对‘TextQuery::query(std::string const&) const’未定义的引用
4-30.cpp:(.text+0x14d)：对‘print(std::ostream&, QueryResult const&)’未定义的引用
collect2: error: ld returned 1 exit status
Process terminated with status 1 (0 minute(s), 0 second(s))
0 error(s), 0 warning(s) (0 minute(s), 0 second(s))

//TextQuery.h

#ifndef TEXTQUERY_H_INCLUDED
#define TEXTQUERY_H_INCLUDED

#include <vector>
#include <map>
#include <set>
#include <string>
#include <fstream>
#include <memory>
class QueryResult;
class TextQuery
{
public:
        using line_no=std::vector<std::string>::size_type;
        TextQuery(std::fstream&);
        QueryResult query(const std::string&) const;
private:
        std::shared_ptr<std::vector<std::string>> file;
        std::map<std::string,std::shared_ptr<std::set<line_no>>> wm;
};
class QueryResult
{
        friend std::ostream &print(std::ostream&,const QueryResult&);
public:
        QueryResult(std::string s,std::shared_ptr<std::set<TextQuery::line_no>> p,std::shared_ptr<std::vector<std::string>> f):sought(s),lines(p),file(f){}
private:
        std::string sought;
        std::shared_ptr<std::set<TextQuery::line_no>> lines;
        std::shared_ptr<std::vector<std::string>> file;
};

#endif // TEXTQUERY_H_INCLUDED

//TextQuery.cpp

#include "TextQuery.h"
#include <sstream>
#include <algorithm>
#include <ostream>
using std::string;
using std::vector;
using std::set;
using std::istream;
using std::istringstream;
using std::shared_ptr;
using std::fstream;
using std::ostream;
using std::endl;
TextQuery::TextQuery(fstream &is):file(new vector<string>)
{
        string text;
        while(getline(is,text))
        {
                file->push_back(text);
                int n=file->size()-1;
                istringstream line(text);
                string word;
                while(line>>word)
                {
                        auto &lines=wm[word];
                        if(!lines)
                                lines.reset(new set<line_no>);
                        lines->insert(n);
                }
        }
}
string make_plural(size_t ctr,const string &word,const string &ending)
{
        return (ctr>1)?word+ending:word;
}
QueryResult TextQuery::query(const string &sought) const
{
        static shared_ptr<set<line_no>> nodata(new set<line_no>);
        auto loc=wm.find(sought);
        if(loc==wm.end())
                return QueryResult(sought,nodata,file);
        else
                return QueryResult(sought,loc->second,file);
}
ostream &print(ostream &os,const QueryResult &qr)
{
        os<<qr.sought<<"occurs"<<qr.lines->size()<<" "<<make_plural(qr.lines->size(),"time","s")<<endl;
        for(auto num:*qr.lines)
                os<<"\t(line"<<num+1<<")"<<*(qr.file->begin()+num)<<endl;
        return os;
}

//main()

#include "TextQuery.h"
#include <iostream>
using std::fstream;
using std::string;
using std::cout;using std::endl;using std::cin;
void runQueries(fstream &infile)
{
        TextQuery tq(infile);
        while(true)
        {
                cout<<"enter word to look for,or q to quit:";
                string s;
                if(!(cin>>s)||s=="q")
                        break;
                print(cout,tq.query(s))<<endl;
        }
}
int main()
{
        fstream file("~/. 1111");
        runQueries(file);
        return 0;
}