G++, Link-Fehler: "...undefined reference to..." treibt mich in den Wahnsinn

MFK

Saiyaman schrieb:

Sie ist definiert. Sonst wäre ja schon das kompilieren fehlgeschlagen.

Falsch. Dem Compiler reicht es, wenn die Methode deklariert ist. Das Auffinden der Definition überlässt er dem Linker.

pumuckl

poste doch mal die relevanten codeteile bitte.

Saiyaman

Die Linkerfehler selbst sind viel zu umfangreich. Ich weiß, dass ich die Funktionen deklariert und definiert habe. Außerdem kann ich das ja unter Windows problemlos compilen.

MFG

elise

sieht nach qt aus.

link mal die entsprechenden libraries mit.

pumuckl

es sieht nicht aus als ob er vergessen hat was einzulinken, weil er im Destruktor einer Klasse eine Methode derselben klasse nicht finden kann.

Saiya: ist das ne eigene KLasse? falls ja: quellcode?

elise

@pumuckel

ein ausschnitt aus einem qt beispiel, dass mit ausgeliefert wird, wenn du die umsonst und draußen version installierst (sieht extrem danach aus):

#include "trayicon.h"
#include "qpopupmenu.h"

/*!
  \class TrayIcon TrayIcon.h
  \brief The TrayIcon class implements an entry in the system tray.
*/

/*!
  Creates a TrayIcon object. \a parent and \a name are propagated
  to the QObject constructor. The icon is initially invisible.

  \sa show
*/
TrayIcon::TrayIcon( QObject *parent, const char *name )
: QObject(parent, name), pop(0), d(0)
{
}

/*!
  Creates a TrayIcon object displaying \a icon and \a tooltip, and opening
  \a popup when clicked with the right mousebutton. \a parent and \a name are
  propagated to the QObject constructor. The icon is initially invisible.

  \sa show
*/
TrayIcon::TrayIcon( const QPixmap &icon, const QString &tooltip, QPopupMenu *popup, QObject *parent, const char *name )
: QObject(parent, name), pop(popup), pm(icon), tip(tooltip), d(0)
{
}

/*!
  Removes the icon from the system tray and frees all allocated resources.
*/
TrayIcon::~TrayIcon()
{
    sysRemove();
}
//.....

ps: er ha wahrscheinlich die cpp nicht mitgenommen.

hi elise kommst du zum forentreff??

Saiyaman

Ja, das ist das Trayicon-Beispiel. Das hab ich inzwischen rausgenommen. Aber leider gibts auch die Fehler bei den selbstgeschriebenen Funktionen.

Ich poste die anderen Fehler gleich mal. Die Funktionen/Methoden brauch ich glaub ich nich posten, weil 1. zu umfangreich und 2. erscheinen mir die Fehler sinnlos im Bezug auf die geschriebenen Funktionen.

g++ -o MGM2 .obj/tDES.o .obj/main.o .obj/TitleBar.o .obj/mggc.o .obj/FtpDownloadThread.o .obj/HttpDownloadThread.o .obj/catfiles.o .obj/download.o .obj/options.o .obj/choice.o .obj/information.o .obj/search.o .obj/tray.o .obj/control.o .obj/news.o .obj/stats.o .obj/MainWindow.o .obj/moc_TitleBar.o .obj/moc_mggc.o .obj/moc_FtpDownloadThread.o .obj/moc_HttpDownloadThread.o .obj/moc_MainWindow.o -L/usr/share/qt3/lib -L/usr/X11R6/lib -lqt-mt -lXext -lX11 -lm
.obj/tDES.o(.text+0x29e): In function McbTestSingleDES()': : undefined reference tostd::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Rep::_S_empty_rep_storage'
.obj/tDES.o(.text+0x2a5): In function McbTestSingleDES()': : undefined reference tostd::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Rep::_S_empty_rep_storage'
.obj/tDES.o(.text+0x44e): In function McbTestSingleDES()': : undefined reference tostd::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Rep::_S_empty_rep_storage'
.obj/tDES.o(.text+0x4cc): In function McbTestSingleDES()': : undefined reference tostd::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Rep::_S_empty_rep_storage'
.obj/tDES.o(.text+0x58e): In function McbTestSingleDES()': : undefined reference to__gnu_cxx::__exchange_and_add(int volatile*, int)'
.obj/tDES.o(.text+0x5ca): In function McbTestSingleDES()': : undefined reference to__gnu_cxx::__exchange_and_add(int volatile*, int)'
.obj/tDES.o(.text+0x61f): In function McbTestSingleDES()': : undefined reference to__gnu_cxx::__exchange_and_add(int volatile*, int)'
.obj/tDES.o(.text+0x65a): In function McbTestSingleDES()': : undefined reference to__gnu_cxx::__exchange_and_add(int volatile*, int)'
.obj/mggc.o(.text+0x224d): In function CMGGC::gotCounter()': : undefined reference toCMonkeyCategory::getShortName()'
.obj/mggc.o(.text+0x227a): In function CMGGC::gotCounter()': : undefined reference toCMonkeyCategory::getEntry(unsigned)'
.obj/mggc.o(.text+0x28cf): In function CMGGC::getCounter()': : undefined reference toCMonkeyCategory::getShortName()'
.obj/mggc.o(.text+0x28fc): In function CMGGC::getCounter()': : undefined reference toCMonkeyCategory::getEntry(unsigned)'
.obj/HttpDownloadThread.o(.text+0x15de): In function CHttpDownloadThread::startNextJob(bool)': : undefined reference toCMonkeyURL::isOptional()'
.obj/HttpDownloadThread.o(.text+0x1611): In function CHttpDownloadThread::startNextJob(bool)': : undefined reference toCMonkeyURL::getURL()'
.obj/HttpDownloadThread.o(.text+0x177d): In function CHttpDownloadThread::startNextJob(bool)': : undefined reference toCMonkeyURL::getURL()'
.obj/HttpDownloadThread.o(.text+0x1854): In function CHttpDownloadThread::startNextJob(bool)': : undefined reference toCMonkeyURL::getNextMirror()'
.obj/HttpDownloadThread.o(.text+0x1934): In function CHttpDownloadThread::startNextJob(bool)': : undefined reference toCMonkeyURL::getName()'
.obj/HttpDownloadThread.o(.text+0x1b86): In function CHttpDownloadThread::startNextJob(bool)': : undefined reference toCMonkeyURL::getNextMirror()'
.obj/HttpDownloadThread.o(.text+0x1d8d): In function CHttpDownloadThread::handleMirror()': : undefined reference toCMonkeyURL::getNextMirror()'
.obj/HttpDownloadThread.o(.text+0x2f2f): In function CHttpDownloadThread::addJob(QString, QString, QListViewItem*)': : undefined reference toCMonkeyURL::CMonkeyURL[in-charge](QString, QString)'
.obj/HttpDownloadThread.o(.text+0x3388): In function CHttpDownloadThread::addJob(CMonkeyURL*, QString, QListViewItem*)': : undefined reference toCMonkeyURL::getStdFilename()'
.obj/HttpDownloadThread.o(.text+0x3409): In function CHttpDownloadThread::addJob(CMonkeyURL*, QString, QListViewItem*)': : undefined reference toCMonkeyURL::getURL()'
.obj/HttpDownloadThread.o(.text+0x351c): In function CHttpDownloadThread::addJob(CMonkeyURL*, QString, QListViewItem*)': : undefined reference toCMonkeyURL::getStdFilename()'
.obj/HttpDownloadThread.o(.text+0x3767): In function CHttpDownloadThread::addJob(CMonkeyURL*, QString, QListViewItem*)': : undefined reference toCMonkeyURL::getStdFilename()'
.obj/catfiles.o(.text+0x6a7): In function CMGGC::loadCategoryFiles(QStringList)': : undefined reference toCMonkeyCategory::getName()'
.obj/catfiles.o(.text+0xcdd): In function CMGGC::loadCategoryFiles(QStringList)': : undefined reference toCMonkeyCategory::CMonkeyCategory[in-charge](QString)'
.obj/catfiles.o(.text+0xd15): In function CMGGC::loadCategoryFiles(QStringList)': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/catfiles.o(.text+0xe1a): In function CMGGC::loadCategoryFiles(QStringList)': : undefined reference toCMonkeyCategory::setFileName(QString)'
.obj/catfiles.o(.text+0xe65): In function CMGGC::loadCategoryFiles(QStringList)': : undefined reference toCMonkeyCategory::setContent(QString&)'
.obj/catfiles.o(.text+0xf59): In function CMGGC::loadCategoryFiles(QStringList)': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/catfiles.o(.text+0x10a0): In function CMGGC::loadCategoryFiles(QStringList)': : undefined reference toCMonkeyCategory::CMonkeyCategory[in-charge](QString)'
.obj/catfiles.o(.text+0x10d8): In function CMGGC::loadCategoryFiles(QStringList)': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/catfiles.o(.text+0x1123): In function CMGGC::loadCategoryFiles(QStringList)': : undefined reference toCMonkeyCategory::setMGSBContent(QString&)'
.obj/catfiles.o(.text+0x12b8): In function CMGGC::loadCategoryFiles(QStringList)': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZN15CMonkeyCategoryC1ERKS_+0x36b): In function CMonkeyCategory::CMonkeyCategory[in-charge](CMonkeyCategory const&)': : undefined reference toCMonkeyEntry::~CMonkeyEntry [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZN15CMonkeyCategoryC1ERKS_+0x4fd): In function CMonkeyCategory::CMonkeyCategory[in-charge](CMonkeyCategory const&)': : undefined reference toCMonkeyURL::~CMonkeyURL [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZN15CMonkeyCategoryC1ERKS_+0x58c): In function CMonkeyCategory::CMonkeyCategory[in-charge](CMonkeyCategory const&)': : undefined reference toCMonkeyEntry::~CMonkeyEntry [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI10CMonkeyURLSaIS0_EEaSERKS2_+0x145): In function std::vector<CMonkeyURL, std::allocator<CMonkeyURL> >::operator=(std::vector<CMonkeyURL, std::allocator<CMonkeyURL> > const&)': : undefined reference toCMonkeyURL::~CMonkeyURL [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI10CMonkeyURLSaIS0_EEaSERKS2_+0x4c5): In function std::vector<CMonkeyURL, std::allocator<CMonkeyURL> >::operator=(std::vector<CMonkeyURL, std::allocator<CMonkeyURL> > const&)': : undefined reference toCMonkeyURL::~CMonkeyURL [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI10CMonkeyURLSaIS0_EEaSERKS2_+0x559): In function std::vector<CMonkeyURL, std::allocator<CMonkeyURL> >::operator=(std::vector<CMonkeyURL, std::allocator<CMonkeyURL> > const&)': : undefined reference toCMonkeyURL::~CMonkeyURL [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI10CMonkeyURLSaIS0_EEaSERKS2_+0x596): In function std::vector<CMonkeyURL, std::allocator<CMonkeyURL> >::operator=(std::vector<CMonkeyURL, std::allocator<CMonkeyURL> > const&)': : undefined reference toCMonkeyURL::~CMonkeyURL [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI12CMonkeyEntrySaIS0_EEaSERKS2_+0x195): In function std::vector<CMonkeyEntry, std::allocator<CMonkeyEntry> >::operator=(std::vector<CMonkeyEntry, std::allocator<CMonkeyEntry> > const&)': : undefined reference toCMonkeyEntry::~CMonkeyEntry [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI12CMonkeyEntrySaIS0_EEaSERKS2_+0x855): In function std::vector<CMonkeyEntry, std::allocator<CMonkeyEntry> >::operator=(std::vector<CMonkeyEntry, std::allocator<CMonkeyEntry> > const&)': : undefined reference toCMonkeyEntry::~CMonkeyEntry [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI12CMonkeyEntrySaIS0_EEaSERKS2_+0x93d): In function std::vector<CMonkeyEntry, std::allocator<CMonkeyEntry> >::operator=(std::vector<CMonkeyEntry, std::allocator<CMonkeyEntry> > const&)': : undefined reference toCMonkeyEntry::~CMonkeyEntry [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI12CMonkeyEntrySaIS0_EEaSERKS2_+0x989): In function std::vector<CMonkeyEntry, std::allocator<CMonkeyEntry> >::operator=(std::vector<CMonkeyEntry, std::allocator<CMonkeyEntry> > const&)': : undefined reference toCMonkeyEntry::~CMonkeyEntry [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI12CMonkeyEntrySaIS0_EEaSERKS2_+0xb9f): In function std::vector<CMonkeyEntry, std::allocator<CMonkeyEntry> >::operator=(std::vector<CMonkeyEntry, std::allocator<CMonkeyEntry> > const&)': : undefined reference toCMonkeyURL::~CMonkeyURL [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI12CMonkeyEntrySaIS0_EEaSERKS2_+0xc2f): In function std::vector<CMonkeyEntry, std::allocator<CMonkeyEntry> >::operator=(std::vector<CMonkeyEntry, std::allocator<CMonkeyEntry> > const&)': : undefined reference toCMonkeyURL::~CMonkeyURL [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI15CMonkeyCategorySaIS0_EE5eraseEN9__gnu_cxx17__normal_iteratorIPS0_S2_EES6_+0xd5): In function std::vector<CMonkeyCategory, std::allocator<CMonkeyCategory> >::erase(\_\_gnu\_cxx::\_\_normal\_iterator<CMonkeyCategory*, std::vector<CMonkeyCategory, std::allocator<CMonkeyCategory> > >, \_\_gnu\_cxx::\_\_normal\_iterator<CMonkeyCategory*, std::vector<CMonkeyCategory, std::allocator<CMonkeyCategory> > >)': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI15CMonkeyCategorySaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x185): In function std::vector<CMonkeyCategory, std::allocator<CMonkeyCategory> >::\_M\_insert\_aux(\_\_gnu\_cxx::\_\_normal_iterator<CMonkeyCategory*, std::vector<CMonkeyCategory, std::allocator<CMonkeyCategory> > >, CMonkeyCategory const&)': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI15CMonkeyCategorySaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x20a): In function std::vector<CMonkeyCategory, std::allocator<CMonkeyCategory> >::\_M\_insert\_aux(\_\_gnu\_cxx::\_\_normal_iterator<CMonkeyCategory*, std::vector<CMonkeyCategory, std::allocator<CMonkeyCategory> > >, CMonkeyCategory const&)': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI15CMonkeyCategorySaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x2c0): In function std::vector<CMonkeyCategory, std::allocator<CMonkeyCategory> >::\_M\_insert\_aux(\_\_gnu\_cxx::\_\_normal_iterator<CMonkeyCategory*, std::vector<CMonkeyCategory, std::allocator<CMonkeyCategory> > >, CMonkeyCategory const&)': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI15CMonkeyCategorySaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x310): In function std::vector<CMonkeyCategory, std::allocator<CMonkeyCategory> >::\_M\_insert\_aux(\_\_gnu\_cxx::\_\_normal_iterator<CMonkeyCategory*, std::vector<CMonkeyCategory, std::allocator<CMonkeyCategory> > >, CMonkeyCategory const&)': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/catfiles.o(.gnu.linkonce.t._ZNSt6vectorI15CMonkeyCategorySaIS0_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS0_S2_EERKS0_+0x378): more undefined references to CMonkeyCategory::~CMonkeyCategory [in-charge]()' follow .obj/download.o(.text+0x49e): In functionCMGGC::downloadSelectedEntry()':
: undefined reference to CMonkeyCategory::getEntry(unsigned)' .obj/download.o(.text+0x4be): In functionCMGGC::downloadSelectedEntry()':
: undefined reference to CMonkeyCategory::getShortName()' .obj/download.o(.text+0x530): In functionCMGGC::downloadSelectedEntry()':
: undefined reference to CMonkeyCategory::getEntry(unsigned)' .obj/download.o(.text+0x5be): In functionCMGGC::downloadSelectedEntry()':
: undefined reference to CMonkeyCategory::getEntry(unsigned)' .obj/download.o(.text+0x5ca): In functionCMGGC::downloadSelectedEntry()':
: undefined reference to CMonkeyEntry::getDownload(unsigned)' .obj/download.o(.text+0x5d6): In functionCMGGC::downloadSelectedEntry()':
: undefined reference to CMonkeyURL::getStdFilename()' .obj/download.o(.text+0x652): In functionCMGGC::downloadSelectedEntry()':
: undefined reference to CMonkeyCategory::getEntry(unsigned)' .obj/download.o(.text+0x65e): In functionCMGGC::downloadSelectedEntry()':
: undefined reference to CMonkeyEntry::getDownload(unsigned)' .obj/download.o(.text+0x8a3): In functionCMGGC::downloadSelectedEntry()':
: undefined reference to CMonkeyCategory::getEntry(unsigned)' .obj/choice.o(.text+0xfc): In functionCMGGC::changeCategory(int)':
: undefined reference to CMonkeyCategory::getEntry(unsigned)' .obj/choice.o(.text+0x13c): In functionCMGGC::changeCategory(int)':
: undefined reference to CMonkeyCategory::getEntry(unsigned)' .obj/choice.o(.text+0x1c2): In functionCMGGC::changeCategory(int)':
: undefined reference to CMonkeyCategory::getEntry(unsigned)' .obj/choice.o(.text+0x36c): In functionCMGGC::changeCategory(int)':
: undefined reference to CMonkeyCategory::getSize()' .obj/choice.o(.text+0x3f7): In functionCMGGC::changeCategory(int)':
: undefined reference to CMonkeyCategory::getFileName()' .obj/choice.o(.text+0x809): In functionCMGGC::showScreenshot(unsigned, unsigned, bool)':
: undefined reference to CMonkeyCategory::getEntry(unsigned)' .obj/choice.o(.text+0x87a): In functionCMGGC::showScreenshot(unsigned, unsigned, bool)':
: undefined reference to CMonkeyCategory::getEntry(unsigned)' .obj/choice.o(.text+0xc30): In functionCMGGC::showScreenshot(unsigned, unsigned, bool)':
: undefined reference to CMonkeyCategory::getEntry(unsigned)' .obj/choice.o(.text+0xfba): In functionCMGGC::changeEntry(int)':
: undefined reference to CMonkeyCategory::getEntry(unsigned)' .obj/choice.o(.text+0x1095): In functionCMGGC::changeEntry(int)':
: undefined reference to CMonkeyCategory::getEntry(unsigned)' .obj/choice.o(.text+0x1100): more undefined references toCMonkeyCategory::getEntry(unsigned)' follow
.obj/MainWindow.o(.text+0x3139): In function CMainWindow::~CMainWindow [in-charge deleting]()': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/MainWindow.o(.text+0x3343): In function CMainWindow::~CMainWindow [in-charge deleting]()': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/MainWindow.o(.text+0x3719): In function CMainWindow::~CMainWindow [in-charge]()': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/MainWindow.o(.text+0x3923): In function CMainWindow::~CMainWindow [in-charge]()': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/MainWindow.o(.text+0x3cf9): In function CMainWindow::~CMainWindow [not-in-charge]()': : undefined reference toCMonkeyCategory::~CMonkeyCategory [in-charge]()'
.obj/MainWindow.o(.text+0x3f03): more undefined references to `CMonkeyCategory::~CMonkeyCategory [in-charge]()' follow
collect2: ld returned 1 exit status
make: *** [MGM2] Fehler 1

MfG

Saiyaman

Argh!! Unter Windows mit g++ und MingW hab ich den gleichen linker-fehler.

Was ist mit G++ los ?! Ich dachte dieser Compiler sei besser als der von Visual C++ 7.1 ...

MFG

pumuckl

hast du ALLE cpp-Dateien mit eingelinkt?
Poste mal bitte
- deinen Quellcode (mit Dateinamen bitte), wenns geht reduziert aufs wesentliche, also funktionsrümpfe kannst du auslassen, nur andeuten welche funktionen und methoden du wo deklariert und wo implementiert hast
- die Befehle, den du zum kompilieren und linken benutzt (komplette Befehle mit allen optionen), bzw. die makefile, so du denn eine benutzt.

Ringding

Ich dachte dieser Compiler sei besser als der von Visual C++ 7.1 ...

Besser oder nicht (subjektiv sage ich "nein") - ein guter Compiler zeichnet sich nicht dadurch aus, dass ein Unbedarfter damit klarkommt.

G++, Link-Fehler: &quot;...undefined reference to...&quot; treibt mich in den Wahnsinn

G++, Link-Fehler: "...undefined reference to..." treibt mich in den Wahnsinn