Code not compiling in Linux

This is a discussion on Code not compiling in Linux within the C++ Programming forums, part of the General Programming Boards category; I'm not sure why, but this code will compile fine in VS.NET 2003, but not gcc under Linux. It seems ...

  1. #1
    Registered User CompiledMonkey's Avatar
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    Code not compiling in Linux

    I'm not sure why, but this code will compile fine in VS.NET 2003, but not gcc under Linux. It seems to be something with the using statement, almost like it can't find the std stuff. I only posted a small portion of the error messages, but they seem to just repeat over and over. Plus, it was too much to post in one message.

    Full source:
    Code:
    #include <iostream>
    #include <fstream>
    #include <string>
    
    using namespace std;
    
    // displays main menu
    int main_menu(void);
    // display news sites in file
    void print_sites(void);
    
    int main()
    {
            bool cont = true;
            int option = -1;
    
            do
            {
                    // display main menu
            option = main_menu();
    
                    // switch statement for options
                    switch(option)
                    {
                    case 0:
                            cout << "Exiting program..." << endl;
                            cont = false;
                            break;
                    case 1:
                            break;
                    case 2:
                            break;
                    case 3:
                            break;
                    case 4:
                            print_sites();
                            break;
                    }
            } while(cont);
    }
    
    int main_menu()
    {
            int option;
    
        cout << "*** Welcome to RSS Reader ***" << endl;
        cout << "[1] Choose News Site" << endl;
        cout << "[2] Add News Site" << endl;
        cout << "[3] Remove News Site" << endl;
            cout << "[4] Show News Sites" << endl;
        cout << "[0] Exit Program" << endl;
        cout << "Or enter url: ";
    
            cin >> option;
            return option;
    }
    
    void print_sites()
    {
            ifstream sitefile("sites.txt");
            string str1, str2, str3;
    
            cout << "\n";
    
            while( !sitefile.eof() )
            {
                    getline(sitefile, str1, '\t');
                    getline(sitefile, str2, '\t');
                    sitefile >> str3;
    
                    sitefile.ignore(80, '\n');
    
                    cout << str1 << endl;
                    cout << "\t" << str2 << endl;
                    cout << "\t" << str3 << endl;
            }
    
            cout << "\n";
    
            sitefile.close();
    }
    Part of the error during compile:
    Code:
    chris@zion rss_reader $ gcc rss_reader.cpp
    rss_reader.cpp:81:2: warning: no newline at end of file
    /tmp/ccAWoF1y.o(.text+0x50): In function `main':
    : undefined reference to `std::cout'
    /tmp/ccAWoF1y.o(.text+0x55): In function `main':
    : undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'

  2. #2
    & the hat of GPL slaying Thantos's Avatar
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    I got it to compile fine using:
    g++ -o bt bt.cpp -Wall

    If you used make you might want to make sure that its using the c++ compiler and not the C compiler.

  3. #3
    Banned master5001's Avatar
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    What thantos said. Remember g++ will compile C code but gcc will not compile C++ code.

  4. #4
    & the hat of GPL slaying Thantos's Avatar
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    Sample Makefile:
    Code:
    .SUFFIXES:
    .SUFFIXES: .cpp
    
    CC := g++
    CCOPS := -Wall
    
    %:  %.cpp
      $(CC) $(CCOPS) -o $@ $<
    I use this as a basic Makefile and it works for puttering around. When I get into a project I just expand upon it (Usally by adding .o to the SUFFIXES, adding a .o target, and making the source code compile to object code)

  5. #5
    Registered User CompiledMonkey's Avatar
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    Ahh, that's my issue. I was using gcc. I'll try g++ in a bit.

  6. #6
    Registered User CompiledMonkey's Avatar
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    Worked fine. Thanks for the clue.

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