On Monday, 20 July 2015 at 16:03:03 UTC, Shriramana Sharma wrote:
Trying to compile the attached program to test DMD 2.068's
promised C++ interfacing capabilities:
$ dmd qt.d -L-L/usr/share/x86_64-linux-gnu -L-lQt5Core
-L-lQt5Gui
qt.o:(.rodata+0x40): undefined reference to `QWidget::show()'
qt.o: In function `_Dmain':
qt.d:(.text._Dmain+0x3b): undefined reference to
`QApplication::__ctor(int&, char**)'
qt.d:(.text._Dmain+0x4f): undefined reference to
`QApplication::exec()'
collect2: error: ld returned 1 exit status
--- errorlevel 1
Seems like I'm doing something hopelessly wrong. Please
enlighten. Also, please specifically review my hastily
put-together argv(string[] args) function...
I'm using Kubuntu Trusty 64 bit.
I don't know much about the C++ interface but Qt is a massive,
complicated library. Have you tried some simple examples with C++
code you've written yourself?
Just guessing here, but those class definitions don't inherit
from anything (e.g. QApplication should perhaps inherit from
QGUIApplication which inherits from QCoreApplication which
inherits from QObject) so maybe that is a problem? Also exec is a
static member function.