Hello,
I'm trying to learn C++. For the moment, I'm exploring classes and objects. I want to split my program into 3 files: DBus.cpp - bus.h - bus.cpp With Geany this doesn't work (mingw32/8.3). It only compiles, if I integrate bus.cpp into bus.h. I tried the same with Visual Studio (CMake) and it compiles the splittend files without problems.
I want generally use Geany, because VS is too complex for learning, not uncomplicated to handle. What can I do?
Below the 3 Files: DBus.cpp - bus.h - bus.cpp and the error file. ---------DBus.cpp------------------ #include "bus.h" #include <iostream>
int main() { DBus dbus1(130, 25000, "rot"); DBus dbus2(180, 40000, "blau"); dbus1.ausgabeDBus(); dbus2.ausgabeDBus(); } ---------bus.h-------------------------- #pragma once #include <string> #include <iostream>
class DBus { private: int kw; int preis; std::string farbe; public: DBus(int KW, int Pr, std::string Far); void ausgabeDBus(); int getPreis(); std::string getFarbe(); }; ----------bus.cpp-------------------------- #include <iostream> #include "bus.h"
DBus::DBus(int KW, int Pr, std::string Far) { kw = KW; preis = Pr; farbe = Far; } void DBus::ausgabeDBus() { std::cout << "der " << farbe << "e Campingbus hat " << kw << " KW und kostete " << preis << " Euro" << std::endl; } int DBus::getPreis() { return preis; } std::string DBus::getFarbe() { return farbe; } -------------error---------------------- g++ -Wall -o "DBus" "DBus.cpp" (im Verzeichnis: C:\Users\hz\Documents\C++\Class) C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0x54): undefined reference to `DBus::DBus(int, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xaf): undefined reference to `DBus::DBus(int, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xd3): undefined reference to `DBus::ausgabeDBus()' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xdf): undefined reference to `DBus::ausgabeDBus()' collect2.exe: error: ld returned 1 exit status Kompilierung fehlgeschlagen.
You havn't compiled and linked bus.cpp with DBus.cpp so the linker is correctly complaining it can't find the constructor.
Its not anything to do with Geany specifically, thats how the gcc tools work. You need to compile bus.cpp and link the result with the compiled result of DBus.cpp.
You said had used cmake with VS, and Geany is no different. If you want you can use cmake, just edit the command for the make menu entry to cmake and provide the CMakeLists.txt file(s).
Cheers Lex
On Tue, 19 Mar 2024 at 20:52, Hago Ziegler via Users users@lists.geany.org wrote:
Hello,
I'm trying to learn C++. For the moment, I'm exploring classes and objects. I want to split my program into 3 files: DBus.cpp - bus.h - bus.cpp With Geany this doesn't work (mingw32/8.3). It only compiles, if I integrate bus.cpp into bus.h. I tried the same with Visual Studio (CMake) and it compiles the splittend files without problems.
I want generally use Geany, because VS is too complex for learning, not uncomplicated to handle. What can I do?
Below the 3 Files: DBus.cpp - bus.h - bus.cpp and the error file. ---------DBus.cpp------------------ #include "bus.h" #include <iostream>
int main() { DBus dbus1(130, 25000, "rot"); DBus dbus2(180, 40000, "blau"); dbus1.ausgabeDBus(); dbus2.ausgabeDBus(); } ---------bus.h-------------------------- #pragma once #include <string> #include <iostream>
class DBus { private: int kw; int preis; std::string farbe; public: DBus(int KW, int Pr, std::string Far); void ausgabeDBus(); int getPreis(); std::string getFarbe(); }; ----------bus.cpp-------------------------- #include <iostream> #include "bus.h"
DBus::DBus(int KW, int Pr, std::string Far) { kw = KW; preis = Pr; farbe = Far; } void DBus::ausgabeDBus() { std::cout << "der " << farbe << "e Campingbus hat " << kw << " KW und kostete " << preis << " Euro" << std::endl; } int DBus::getPreis() { return preis; } std::string DBus::getFarbe() { return farbe; } -------------error---------------------- g++ -Wall -o "DBus" "DBus.cpp" (im Verzeichnis: C:\Users\hz\Documents\C++\Class) C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0x54): undefined reference to `DBus::DBus(int, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xaf): undefined reference to `DBus::DBus(int, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xd3): undefined reference to `DBus::ausgabeDBus()' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xdf): undefined reference to `DBus::ausgabeDBus()' collect2.exe: error: ld returned 1 exit status Kompilierung fehlgeschlagen.
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Hi Lex,
finally I got it. Now everything is compiled, I got the *.exe and it works as expected. :-)
But I'd like to have this done automatically. Is there a way to tell Geany respectively https://dict.leo.org/englisch-deutsch/respectively g++ to compile _and_ link all *.o files in a certain directory?
Regards, Hago
Am 19.03.2024 um 12:50 schrieb Lex Trotman via Users:
You havn't compiled and linked bus.cpp with DBus.cpp so the linker is correctly complaining it can't find the constructor.
Its not anything to do with Geany specifically, thats how the gcc tools work. You need to compile bus.cpp and link the result with the compiled result of DBus.cpp.
You said had used cmake with VS, and Geany is no different. If you want you can use cmake, just edit the command for the make menu entry to cmake and provide the CMakeLists.txt file(s).
Cheers Lex
On Tue, 19 Mar 2024 at 20:52, Hago Ziegler via Users users@lists.geany.org wrote:
Hello,
I'm trying to learn C++. For the moment, I'm exploring classes and objects. I want to split my program into 3 files: DBus.cpp - bus.h - bus.cpp With Geany this doesn't work (mingw32/8.3). It only compiles, if I integrate bus.cpp into bus.h. I tried the same with Visual Studio (CMake) and it compiles the splittend files without problems.
I want generally use Geany, because VS is too complex for learning, not uncomplicated to handle. What can I do?
Below the 3 Files: DBus.cpp - bus.h - bus.cpp and the error file. ---------DBus.cpp------------------ #include "bus.h" #include <iostream>
int main() { DBus dbus1(130, 25000, "rot"); DBus dbus2(180, 40000, "blau"); dbus1.ausgabeDBus(); dbus2.ausgabeDBus(); } ---------bus.h-------------------------- #pragma once #include <string> #include <iostream>
class DBus { private: int kw; int preis; std::string farbe; public: DBus(int KW, int Pr, std::string Far); void ausgabeDBus(); int getPreis(); std::string getFarbe(); }; ----------bus.cpp-------------------------- #include <iostream> #include "bus.h"
DBus::DBus(int KW, int Pr, std::string Far) { kw = KW; preis = Pr; farbe = Far; } void DBus::ausgabeDBus() { std::cout << "der " << farbe << "e Campingbus hat " << kw << " KW und kostete " << preis << " Euro" << std::endl; } int DBus::getPreis() { return preis; } std::string DBus::getFarbe() { return farbe; } -------------error---------------------- g++ -Wall -o "DBus" "DBus.cpp" (im Verzeichnis: C:\Users\hz\Documents\C++\Class) C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0x54): undefined reference to `DBus::DBus(int, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xaf): undefined reference to `DBus::DBus(int, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xd3): undefined reference to `DBus::ausgabeDBus()' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xdf): undefined reference to `DBus::ausgabeDBus()' collect2.exe: error: ld returned 1 exit status Kompilierung fehlgeschlagen.
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On Wed, 20 Mar 2024 at 21:45, Hago Ziegler via Users users@lists.geany.org wrote:
Hi Lex,
finally I got it. Now everything is compiled, I got the *.exe and it works as expected. :-)
But I'd like to have this done automatically. Is there a way to tell Geany respectively https://dict.leo.org/englisch-deutsch/respectively g++ to compile _and_ link all *.o files in a certain directory?
If you make a Geany project you can set a Geany build command for that project that runs the proper command, but you have to manually update it when you add another file.
But in general there are many complexities with building C/C++ software with files spread over different directories, and libraries to link, and documentation (you _do_ do that don't you? ;-) tools needing to be run and translation tools run etc. A "compile and link all files in a directory" will get old very quickly in any realistic project and Geany can only run one command per menu item.
There are specialist tools for building software, make, cmake, meson, etc etc, choose your poison(s) and set up their control files. Learning about build tools is part of learning C/C++ and most other languages.
You can then set the Geany build command to run your choice from the menu or toolbar or shortcut.
Cheers Lex
Regards, Hago
Am 19.03.2024 um 12:50 schrieb Lex Trotman via Users:
You havn't compiled and linked bus.cpp with DBus.cpp so the linker is correctly complaining it can't find the constructor.
Its not anything to do with Geany specifically, thats how the gcc tools work. You need to compile bus.cpp and link the result with the compiled result of DBus.cpp.
You said had used cmake with VS, and Geany is no different. If you want you can use cmake, just edit the command for the make menu entry to cmake and provide the CMakeLists.txt file(s).
Cheers Lex
On Tue, 19 Mar 2024 at 20:52, Hago Ziegler via Users users@lists.geany.org wrote:
Hello,
I'm trying to learn C++. For the moment, I'm exploring classes and objects. I want to split my program into 3 files: DBus.cpp - bus.h - bus.cpp With Geany this doesn't work (mingw32/8.3). It only compiles, if I integrate bus.cpp into bus.h. I tried the same with Visual Studio (CMake) and it compiles the splittend files without problems.
I want generally use Geany, because VS is too complex for learning, not uncomplicated to handle. What can I do?
Below the 3 Files: DBus.cpp - bus.h - bus.cpp and the error file. ---------DBus.cpp------------------ #include "bus.h" #include <iostream>
int main() { DBus dbus1(130, 25000, "rot"); DBus dbus2(180, 40000, "blau"); dbus1.ausgabeDBus(); dbus2.ausgabeDBus(); } ---------bus.h-------------------------- #pragma once #include <string> #include <iostream>
class DBus { private: int kw; int preis; std::string farbe; public: DBus(int KW, int Pr, std::string Far); void ausgabeDBus(); int getPreis(); std::string getFarbe(); }; ----------bus.cpp-------------------------- #include <iostream> #include "bus.h"
DBus::DBus(int KW, int Pr, std::string Far) { kw = KW; preis = Pr; farbe = Far; } void DBus::ausgabeDBus() { std::cout << "der " << farbe << "e Campingbus hat " << kw << " KW und kostete " << preis << " Euro" << std::endl; } int DBus::getPreis() { return preis; } std::string DBus::getFarbe() { return farbe; } -------------error---------------------- g++ -Wall -o "DBus" "DBus.cpp" (im Verzeichnis: C:\Users\hz\Documents\C++\Class) C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0x54): undefined reference to `DBus::DBus(int, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xaf): undefined reference to `DBus::DBus(int, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xd3): undefined reference to `DBus::ausgabeDBus()' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xdf): undefined reference to `DBus::ausgabeDBus()' collect2.exe: error: ld returned 1 exit status Kompilierung fehlgeschlagen.
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Thank you very much - that's understood,
Hago
Am 20.03.2024 um 13:03 schrieb Lex Trotman via Users:
On Wed, 20 Mar 2024 at 21:45, Hago Ziegler via Users users@lists.geany.org wrote:
Hi Lex,
finally I got it. Now everything is compiled, I got the *.exe and it works as expected. :-)
But I'd like to have this done automatically. Is there a way to tell Geany respectively https://dict.leo.org/englisch-deutsch/respectively g++ to compile _and_ link all *.o files in a certain directory?
If you make a Geany project you can set a Geany build command for that project that runs the proper command, but you have to manually update it when you add another file.
But in general there are many complexities with building C/C++ software with files spread over different directories, and libraries to link, and documentation (you _do_ do that don't you? ;-) tools needing to be run and translation tools run etc. A "compile and link all files in a directory" will get old very quickly in any realistic project and Geany can only run one command per menu item.
There are specialist tools for building software, make, cmake, meson, etc etc, choose your poison(s) and set up their control files. Learning about build tools is part of learning C/C++ and most other languages.
You can then set the Geany build command to run your choice from the menu or toolbar or shortcut.
Cheers Lex
Regards, Hago
Am 19.03.2024 um 12:50 schrieb Lex Trotman via Users:
You havn't compiled and linked bus.cpp with DBus.cpp so the linker is correctly complaining it can't find the constructor.
Its not anything to do with Geany specifically, thats how the gcc tools work. You need to compile bus.cpp and link the result with the compiled result of DBus.cpp.
You said had used cmake with VS, and Geany is no different. If you want you can use cmake, just edit the command for the make menu entry to cmake and provide the CMakeLists.txt file(s).
Cheers Lex
On Tue, 19 Mar 2024 at 20:52, Hago Ziegler via Users users@lists.geany.org wrote:
Hello,
I'm trying to learn C++. For the moment, I'm exploring classes and objects. I want to split my program into 3 files: DBus.cpp - bus.h - bus.cpp With Geany this doesn't work (mingw32/8.3). It only compiles, if I integrate bus.cpp into bus.h. I tried the same with Visual Studio (CMake) and it compiles the splittend files without problems.
I want generally use Geany, because VS is too complex for learning, not uncomplicated to handle. What can I do?
Below the 3 Files: DBus.cpp - bus.h - bus.cpp and the error file.---------DBus.cpp------------------ #include "bus.h" #include <iostream>
int main() { DBus dbus1(130, 25000, "rot"); DBus dbus2(180, 40000, "blau"); dbus1.ausgabeDBus(); dbus2.ausgabeDBus(); } ---------bus.h-------------------------- #pragma once #include <string> #include <iostream>
class DBus { private: int kw; int preis; std::string farbe; public: DBus(int KW, int Pr, std::string Far); void ausgabeDBus(); int getPreis(); std::string getFarbe(); }; ----------bus.cpp-------------------------- #include <iostream> #include "bus.h"
DBus::DBus(int KW, int Pr, std::string Far) { kw = KW; preis = Pr; farbe = Far; } void DBus::ausgabeDBus() { std::cout << "der " << farbe << "e Campingbus hat " << kw << " KW und kostete " << preis << " Euro" << std::endl; } int DBus::getPreis() { return preis; } std::string DBus::getFarbe() { return farbe; } -------------error---------------------- g++ -Wall -o "DBus" "DBus.cpp" (im Verzeichnis: C:\Users\hz\Documents\C++\Class) C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0x54): undefined reference to `DBus::DBus(int, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xaf): undefined reference to `DBus::DBus(int, int, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xd3): undefined reference to `DBus::ausgabeDBus()' C:/c/bin/../lib/gcc/x86_64-w64-mingw32/8.3.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\hz\AppData\Local\Temp\ccrZlTnk.o:DBus.cpp:(.text+0xdf): undefined reference to `DBus::ausgabeDBus()' collect2.exe: error: ld returned 1 exit status Kompilierung fehlgeschlagen.
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