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POError: symbol(s) not found for architecture x86_64, collect2: ld returned 1 exit status
 

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  1. POError: symbol(s) not found for architecture x86_64, collect2: ld returned 1 exit status
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    <p>I have been struggling for a while with an issue on Qt.</p> <p>Here is my code:</p> <p>hexbutton.h:</p> <pre><code>#ifndef HEXBUTTON_H #define HEXBUTTON_H #include &lt;QPushButton&gt; #include &lt;QWidget&gt; #include &lt;QIcon&gt; class HexButton : public QPushButton { Q_OBJECT public: HexButton(QWidget *parent, QIcon &amp;icon, int i, int j); public slots: void changeIcon(); }; #endif // HEXBUTTON_H </code></pre> <p>Hexbutton.cpp:</p> <pre><code>#include "hexbutton.h" HexButton::HexButton(QWidget *parent, QIcon &amp;icon, int i , int j) : QPushButton(parent){ //setFlat(true); setIcon(icon); setGeometry((i*40)+((j*40)/2), j*40, 40, 40); } void HexButton::changeIcon(){ setIcon(QIcon("/Users/jonathanbibas/Documents/Workspace Qt/Test/hexagon.gif")); } </code></pre> <p>MyWindow.h:</p> <pre><code>#ifndef MYWINDOW_H #define MYWINDOW_H #include &lt;QApplication&gt; #include &lt;QWidget&gt; #include &lt;QPushButton&gt; #include &lt;QLCDNumber&gt; #include &lt;QSlider&gt; #include &lt;QProgressBar&gt; #include "hexbutton.h" class MyWindow : public QWidget { public: MyWindow(); ~MyWindow(); private: HexButton * myButtons[11][11]; }; #endif // MYWINDOW_H </code></pre> <p>MyWindow.cpp:</p> <pre><code>#include "MyWindow.h" #include &lt;QColor&gt; #include &lt;QIcon&gt; MyWindow::MyWindow() : QWidget() { setFixedSize(740, 440); QIcon icon = QIcon("/Users/jonathanbibas/Documents/Workspace Qt/Test/whitehexagon.png"); for(int i =0 ; i &lt; 11 ; i ++){ for(int j =0 ; j &lt; 11 ; j ++){ myButtons[i][j] = new HexButton(this, icon, i, j); QObject::connect(myButtons[i][j], SIGNAL(clicked()), myButtons[i][j], SLOT(changeIcon())); } } } MyWindow::~MyWindow() { delete myButtons; } </code></pre> <p>And finally, Main.cpp:</p> <pre><code>#include &lt;QApplication&gt; #include "MyWindow.h" int main(int argc, char *argv[]) { QApplication app(argc, argv); MyWindow fenetre; fenetre.show(); return app.exec(); } </code></pre> <p>Just in case, here is the Test.pro</p> <pre><code>SOURCES += \ Main.cpp \ MyWindow.cpp \ hexbutton.cpp HEADERS += \ MyWindow.h \ hexbutton.h </code></pre> <p>And I get the 2 errors:</p> <p>1) symbol(s) not found for architecture x86_64</p> <p>2) collect2: ld returned 1 exit status</p> <p>It also says 121 times (11*11):</p> <p>Object::connect: No such slot QPushButton::changeIcon() in ../Test/MyWindow.cpp:19</p> <p>and on the compile output it says:</p> <pre><code>18:22:15: Running build steps for project Test... 18:22:15: Configuration unchanged, skipping qmake step. 18:22:15: Starting: "/usr/bin/make" -w make: Entering directory `/Users/jonathanbibas/Documents/Workspace Qt/Test-build-desktop-Desktop_Qt_4_8_0_for_GCC__Qt_SDK__Debug' g++ -c -pipe -g -gdwarf-2 -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5 -Wall -W -DQT_GUI_LIB -DQT_CORE_LIB -I../../../QtSDK/Desktop/Qt/4.8.0/gcc/mkspecs/macx-g++ -I../Test -I../../../QtSDK/Desktop/Qt/4.8.0/gcc/lib/QtCore.framework/Versions/4/Headers -I../../../QtSDK/Desktop/Qt/4.8.0/gcc/include/QtCore -I../../../QtSDK/Desktop/Qt/4.8.0/gcc/lib/QtGui.framework/Versions/4/Headers -I../../../QtSDK/Desktop/Qt/4.8.0/gcc/include/QtGui -I../../../QtSDK/Desktop/Qt/4.8.0/gcc/include -I. -I../Test -I. -F/Users/jonathanbibas/QtSDK/Desktop/Qt/4.8.0/gcc/lib -o hexbutton.o ../Test/hexbutton.cpp g++ -headerpad_max_install_names -arch x86_64 -Xarch_x86_64 -mmacosx-version-min=10.5 -o Test.app/Contents/MacOS/Test Main.o MyWindow.o hexbutton.o moc_MyWindow.o -F/Users/jonathanbibas/QtSDK/Desktop/Qt/4.8.0/gcc/lib -L/Users/jonathanbibas/QtSDK/Desktop/Qt/4.8.0/gcc/lib -framework QtGui -framework QtCore Undefined symbols for architecture x86_64: "vtable for HexButton", referenced from: HexButton::HexButton(QWidget*, QIcon&amp;, int, int)in hexbutton.o HexButton::HexButton(QWidget*, QIcon&amp;, int, int)in hexbutton.o NOTE: a missing vtable usually means the first non-inline virtual member function has no definition. ld: symbol(s) not found for architecture x86_64 collect2: ld returned 1 exit status make: *** [Test.app/Contents/MacOS/Test] Error 1 make: Leaving directory `/Users/jonathanbibas/Documents/Workspace Qt/Test-build-desktop-Desktop_Qt_4_8_0_for_GCC__Qt_SDK__Debug' 18:22:20: The process "/usr/bin/make" exited with code 2. Error while building project Test (target: Desktop) When executing build step 'Make' </code></pre> <p>Apparently the error comes from the Q_OBJECT (needed for the slots definition), but there is something wrong with my code, not with my compiler (because I have when slots are in MainWindow, it works fine).</p> <p>Thank you for your help!</p>
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    1. COCan you include the full error, i.e. what symbols were not found please?
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    2. COI just added the details...
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      1. USJonathan Bibas
    3. CODo you know about moc? If the classes don't get moced correctly you can have link problems. Try building with qmake from command-line.
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