Re: Fwd: libcacard: forward declaration of VReader

[Alex Roithman <kaperang07@xxxxxxxxx>]

Hmmm...

If i use vreader_get_name(VReader*) method,

then i have :

CMakeFiles/qt4-virt-manager.dir/src/vm_viewer/qspice_widgets/qspicesmartcardmanager.cpp.o: In function `QSpiceSmartcardManager::spiceSmartcardManager_get_readers()':
qspicesmartcardmanager.cpp:(.text+0x390): undefined reference to `vreader_get_name(VReaderStruct*)'
collect2: error: ld returned 1 exit status

while libcacard and includes detected:
http://fpaste.org/292227/14479278/

On 19 November 2015 at 12:03, Marc-André Lureau <marcandre.lureau@xxxxxxxxx> wrote:

hi

On Thu, Nov 19, 2015 at 9:12 AM, Alex Roithman <kaperang07@xxxxxxxxx> wrote:
>
> ---------- Forwarded message ----------
> From: Alex Roithman <kaperang07@xxxxxxxxx>
> Date: 18 November 2015 at 22:17
> Subject: libcacard: forward declaration of VReader
> To: qemu-discuss@xxxxxxxxxx
>
>
> hi
>
> my project not build complete, because i have:
> <error>
> /usr/bin/c++   -DQT_CORE_LIB -DQT_GUI_LIB -DQT_NO_DEBUG -DQT_SVG_LIB
> -DQT_XML_LIB -I/home/Flash/qt-virt-manager-build
> -I/home/Flash/qt-virt-manager/src -isystem /usr/include/QtSvg -isystem
> /usr/include/QtGui -isystem /usr/include/QtXml -isystem /usr/include/QtCore
> -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include
> -I/usr/include/glib-2.0/gobject -I/usr/include/glib-2.0/gio
> -I/usr/include/cacard -I/usr/include/spice-1
> -I/usr/include/spice-client-glib-2.0 -I/usr/include/qtermwidget4    -o
> CMakeFiles/qt4-virt-manager.dir/src/vm_viewer/qspice_widgets/qspicesmartcardmanager.cpp.o
> -c
> /home/Flash/qt-virt-manager/src/vm_viewer/qspice_widgets/qspicesmartcardmanager.cpp
> /home/Flash/qt-virt-manager/src/vm_viewer/qspice_widgets/qspicesmartcardmanager.cpp:
> В функции-члене «QStringList
> QSpiceSmartcardManager::spiceSmartcardManager_get_readers()»:
> /home/Flash/qt-virt-manager/src/vm_viewer/qspice_widgets/qspicesmartcardmanager.cpp:89:35:
> error: invalid use of incomplete type «VReader {aka struct VReaderStruct}»
>          _readerList.append(_reader->name);
>                                    ^
> In file included from /usr/include/cacard/eventt.h:8:0,
>                  from /usr/include/cacard/vreader.h:9,
>                  from
> /home/Flash/qt-virt-manager/src/vm_viewer/qspice_widgets/qspicesmartcardmanager.cpp:2:
> /usr/include/cacard/vreadert.h:16:16: warning: forward declaration of
> «VReader {aka struct VReaderStruct}»
>  typedef struct VReaderStruct VReader;
> </error>
>
> in system installed
> libcacard.x86_64 2:2.3.1-7.fc22
> libcacard-devel.x86_64 2:2.3.1-7.fc22
>
> in code i'm use only
> #include <vreader.h>
> from libcacard
>
> part of code:
> <code>
>         VReader *_reader =
>                 static_cast<VReader*>(g_list_nth_data(_list, i));
>          _readerList.append(_reader->name);
> </code>
>
> Maybe you have same problems at building.
> I accept any advice.

VReader is an opaque type, you can't access any field

>
>
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> Spice-devel mailing list
> Spice-devel@xxxxxxxxxxxxxxxxxxxxx
> http://lists.freedesktop.org/mailman/listinfo/spice-devel
>



--
Marc-André Lureau

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