firebird database - ibpp

jleko

hi,
I'm starting to code with qt and firebird
I decided to use IBPP for connecting qt application with firebird db on windows 10
after including ibpp.h in my project and after trying to build it I get the following errors:
error1:
C:\Users\jozol\OneDrive\APP-DEMO\qtFB\ibpp-core\ibpp.h:875: error: undefined reference to `IBPP::DatabaseFactory(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'

error2:
collect2.exe:-1: error: error: ld returned 1 exit status
could you please help me on this?
thanks

TioRoy

Did you include de LIB in your .pro?


win32{
  LIBS += -L<path to lib> -lfbclient_ms -ladvapi32
  DEFINES += IBPP_WINDOWS
}

jleko

not this way you showed, thanks for this one...
but now, new error emerged: :-1: error: [release\qtFB.exe] Error 1
Makefile.Release:69: recipe for target 'release\qtFB.exe' failed
mingw32-make[1]: Leaving directory 'C:/Users/jozol/OneDrive/APP-DEMO/build-qtFB-Desktop_Qt_5_8_0_MinGW_32bit-Profile'
mingw32-make[1]: *** [release\qtFB.exe] Error 1
Makefile:34: recipe for target 'release' failed
mingw32-make: *** [release] Error 2
21:56:37: The process "C:\Qt\Tools\mingw530_32\bin\mingw32-make.exe" exited with code 2.
Error while building/deploying project qtFB (kit: Desktop Qt 5.8.0 MinGW 32bit)
When executing step "Make"
21:56:37: Elapsed time: 00:01.

any suggestions please

SGaist

Hi and welcome to devnet,

You should post the actual error, this is just the end of the log and not the most useful information can be extracted from that part.

jleko

Hi,
This is how my .pro file looks now.
It compiles...
Thanks a lot

QT += core gui sql¸
SOURCES += main.cpp
mainview.cpp

HEADERS += mainview.h
ibpp-core/_ibpp.h
ibpp-core/ibase.h
ibpp-core/iberror.h
ibpp-core/ibpp.h

FORMS += mainview.ui

#IBPP
win32 {
LIBS += -LC:/Firebird/Firebird_3_0/lib -lfbclient_ms -ladvapi32
DEFINES += IBPP_WINDOWS
#LIBS += -lfbclient_ms
}
INCLUDEPATH += c:/Firebird/Firebird_3_0/include

#C++ flags
CONFIG += c++11
CONFIG += c++14

SGaist

Which version of Qt are you using ? If above or equal 5.7, you can safely remove the C++XX config values. A C++11 able compiler is mandatory since 5.7. qmake should choose the latest standard available.

And again, please post a more complete error log.

jleko

I'm using qt 5.8
Here is the content of .cpp, .h and .pro files, and text of error:
//qt pro file
#-------------------------------------------------

Project created by QtCreator 2017-04-12T23:31:36

#-------------------------------------------------

QT += core gui sql

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = qtfb2
TEMPLATE = app

The following define makes your compiler emit warnings if you use

any feature of Qt which as been marked as deprecated (the exact warnings

depend on your compiler). Please consult the documentation of the

deprecated API in order to know how to port your code away from it.

DEFINES += QT_DEPRECATED_WARNINGS

You can also make your code fail to compile if you use deprecated APIs.

In order to do so, uncomment the following line.

You can also select to disable deprecated APIs only up to a certain version of Qt.

#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0

SOURCES += main.cpp
mainview.cpp

HEADERS += mainview.h
ibpp-core/_ibpp.h
ibpp-core/ibase.h
ibpp-core/iberror.h
ibpp-core/ibpp.h

FORMS += mainview.ui

#IBPP
win32 {
LIBS += -LC:/Firebird/Firebird_3_0/lib
LIBS += -lAdvapi32 -lfbclient_ms
DEFINES += IBPP_WINDOWS
DEFINES += MBCS
DEFINES -= -UNICODE
QMAKE_CXXFLAGS += -DIBPP_WINDOWS

#LIBS += -LC:/Firebird/Firebird_2_5/lib
}
INCLUDEPATH += c:/Firebird/Firebird_3_0/include

#C++ flags
#CONFIG += c++11
#CONFIG += c++14

//mainview.cpp
#include "mainview.h"
#include "ui_mainview.h"
#include <iostream>
#include <string>
#include <QDebug>
#include "ibpp-core/ibpp.h"

using namespace IBPP;
using namespace std;

MainView::MainView(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainView)
{
ui->setupUi(this);
db=IBPP::DatabaseFactory(serverName,dbName,userName, password);
}

MainView::~MainView()
{
delete ui;
}

//mainview.h
#ifndef MAINVIEW_H
#define MAINVIEW_H

#include <QMainWindow>
#include <string>
#include "ibpp-core/ibpp.h"
#include "ibpp-core/_ibpp.h"
using namespace IBPP;
using namespace std;

namespace Ui {
class MainView;
}

class MainView : public QMainWindow
{
Q_OBJECT

public:
explicit MainView(QWidget *parent = 0);
~MainView();

private:
Ui::MainView ui;
Database db;
const string dbName = "C:/Firebird/Firebird_3_0/examples/JLEKOTEST.FDB";
const string serverName = "localhost";
const string userName = "SYSDBA";
const string password = "***";
};

#endif // MAINVIEW_H

//qt issues
mainview.obj:-1: error: LNK2019: unresolved external symbol "class IBPP::Ptr<class IBPP::IDatabase> __cdecl IBPP::DatabaseFactory(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?DatabaseFactory@IBPP@@YA?AV?$Ptr@VIDatabase@IBPP@@@1@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@000000@Z) referenced in function "class IBPP::Ptr<class IBPP::IDatabase> __cdecl IBPP::DatabaseFactory(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?DatabaseFactory@IBPP@@YA?AV?$Ptr@VIDatabase@IBPP@@@1@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@000@Z)

debug\qtfb2.exe:-1: error: LNK1120: 1 unresolved externals

//compile output
11:36:38: Running steps for project qtfb2...
11:36:38: Configuration unchanged, skipping qmake step.
11:36:38: Starting: "C:\Qt\Tools\QtCreator\bin\jom.exe"
C:\Qt\Tools\QtCreator\bin\jom.exe -f Makefile.Debug
cl -c -nologo -Zc:wchar_t -FS -Zc:strictStrings -Zc:throwingNew -DIBPP_WINDOWS -Zi -MDd -GR -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -EHsc /Fddebug\qtfb2.vc.pdb -DWIN32 -DWIN64 -DQT_DEPRECATED_WARNINGS -DIBPP_WINDOWS -DMBCS -DQT_QML_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_SQL_LIB -DQT_CORE_LIB -I..\qtfb2 -I. -Ic:\Firebird\Firebird_3_0\include -IC:\Qt\5.8\msvc2015_64\include -IC:\Qt\5.8\msvc2015_64\include\QtWidgets -IC:\Qt\5.8\msvc2015_64\include\QtGui -IC:\Qt\5.8\msvc2015_64\include\QtANGLE -IC:\Qt\5.8\msvc2015_64\include\QtSql -IC:\Qt\5.8\msvc2015_64\include\QtCore -Idebug -I. -IC:\Qt\5.8\msvc2015_64\mkspecs\win32-msvc2015 -Fodebug\ @C:\Users\jozol\AppData\Local\Temp\mainview.obj.3512.15.jom
mainview.cpp
link /NOLOGO /DYNAMICBASE /NXCOMPAT /DEBUG /SUBSYSTEM:WINDOWS "/MANIFESTDEPENDENCY:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' publicKeyToken='6595b64144ccf1df' language='' processorArchitecture=''" /MANIFEST:embed /OUT:debug\qtfb2.exe @C:\Users\jozol\AppData\Local\Temp\qtfb2.exe.3512.3015.jom
mainview.obj : error LNK2019: unresolved external symbol "class IBPP::Ptr<class IBPP::IDatabase> __cdecl IBPP::DatabaseFactory(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?DatabaseFactory@IBPP@@YA?AV?$Ptr@VIDatabase@IBPP@@@1@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@000000@Z) referenced in function "class IBPP::Ptr<class IBPP::IDatabase> __cdecl IBPP::DatabaseFactory(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (?DatabaseFactory@IBPP@@YA?AV?$Ptr@VIDatabase@IBPP@@@1@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@000@Z)
debug\qtfb2.exe : fatal error LNK1120: 1 unresolved externals
jom: C:\Users\jozol\OneDrive\APP-DEMO\build-qtfb2-Desktop_Qt_5_8_0_MSVC2015_64bit-Debug\Makefile.Debug [debug\qtfb2.exe] Error 1120
jom: C:\Users\jozol\OneDrive\APP-DEMO\build-qtfb2-Desktop_Qt_5_8_0_MSVC2015_64bit-Debug\Makefile [debug] Error 2
11:36:41: The process "C:\Qt\Tools\QtCreator\bin\jom.exe" exited with code 2.
Error while building/deploying project qtfb2 (kit: Desktop Qt 5.8.0 MSVC2015_64bit)
The kit Desktop Qt 5.8.0 MSVC2015_64bit has configuration issues which might be the root cause for this problem.
When executing step "Make"
11:36:41: Elapsed time: 00:03.

SGaist

Are you sure you are linking to all the required libraries ?

jleko

@SGaist I'm not sure, if you have a suggestion please be my guest...

SGaist

For which version of MSVC are your Firebrid libraries compiled ?

What about ib_util_ms.lib ?

jleko

@SGaist
Hi, I reinstalled Qt with MinGW, included ib_util_ms.lib and error looks like this:

22:05:37: Running steps for project qtfb2...
22:05:37: Configuration unchanged, skipping qmake step.
22:05:37: Starting: "C:\Qt\Tools\mingw530_32\bin\mingw32-make.exe" 
C:\Qt\5.8\mingw53_32\bin\qmake.exe -o Makefile ..\qtfb2\qtfb2.pro -spec win32-g++ "CONFIG+=debug" "CONFIG+=qml_debug"
C:/Qt/Tools/mingw530_32/bin/mingw32-make -f Makefile.Debug
mingw32-make[1]: Entering directory 'C:/Users/jozol/OneDrive/APP-DEMO/build-qtfb2-Desktop_Qt_5_8_0_MinGW_32bit-Debug'
g++ -Wl,-subsystem,windows -mthreads -o debug\qtfb2.exe debug/main.o debug/mainview.o debug/moc_mainview.o  -lmingw32 -LC:\Qt\5.8\mingw53_32\lib C:\Qt\5.8\mingw53_32\lib\libqtmaind.a -LC:\utils\my_sql\my_sql\lib -LC:\utils\postgresql\pgsql\lib -lshell32 -LC:\Firebird\Firebird_3_0\lib -LC:\Firebird\Firebird_3_0\WOW64\lib -lAdvapi32 -lfbclient_ms -lib_util_ms C:\Qt\5.8\mingw53_32\lib\libQt5Widgetsd.a C:\Qt\5.8\mingw53_32\lib\libQt5Guid.a C:\Qt\5.8\mingw53_32\lib\libQt5Sqld.a C:\Qt\5.8\mingw53_32\lib\libQt5Cored.a 
debug/mainview.o: In function `ZN4IBPP15DatabaseFactoryERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES7_S7_S7_':
C:\Users\jozol\OneDrive\APP-DEMO\build-qtfb2-Desktop_Qt_5_8_0_MinGW_32bit-Debug/../qtfb2/ibpp-core/ibpp.h:875: undefined reference to `IBPP::DatabaseFactory(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
collect2.exe: error: ld returned 1 exit status
Makefile.Debug:69: recipe for target 'debug\qtfb2.exe' failed
mingw32-make[1]: *** [debug\qtfb2.exe] Error 1
mingw32-make[1]: Leaving directory 'C:/Users/jozol/OneDrive/APP-DEMO/build-qtfb2-Desktop_Qt_5_8_0_MinGW_32bit-Debug'
Makefile:34: recipe for target 'debug' failed
mingw32-make: *** [debug] Error 2
22:05:39: The process "C:\Qt\Tools\mingw530_32\bin\mingw32-make.exe" exited with code 2.
Error while building/deploying project qtfb2 (kit: Desktop Qt 5.8.0 MinGW 32bit)
When executing step "Make"
22:05:39: Elapsed time: 00:03.

When I comment this line in .cpp file
// db=IBPP::DatabaseFactory(serverName,dbName,userName, password);
no error occures...
I really don't know what to do...I read on internet that this could be encoding problem, but I'm newb and it is little bit complex for me...
Regards.

SGaist

Again: which compiler was used to build your IBPP libraries ? It's really important on Windows since you can't mix and match compilers. Only VS2017 is compatible with VS2015.

jleko

@SGaist
Where can I see that?
I'm including only ibpp.h file in my project, no ibpp library file.

SGaist

Check the content of your package, README file etc. You can run Dependency Walker.

TioRoy

Checking the ZIP file contentes from https://www.firebirdsql.org/en/firebird-3-0-2/. Firebird is using MS compiler.

So, do not use MingW.

jleko

Is there a way around this?
Compilig a qibase driver maybe...

SGaist

A way around what ?

jleko

IBPP does not work with firebird3, I tried it with 2.5 and it works Ok.....