[Spice-devel] Fwd: libcacard: forward declaration of VReader

[Marc-André Lureau]

Hi

----- Original Message -----
> 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
> 

That's probably the classic missing extern "C". I'll send a patch.

> while libcacard and includes detected:
> http://fpaste.org/292227/14479278/
> 
> On 19 November 2015 at 12:03, Marc-André Lureau < marcandre.lureau at gmail.com
> > wrote:
> 
> 
> hi
> 
> On Thu, Nov 19, 2015 at 9:12 AM, Alex Roithman < kaperang07 at gmail.com >
> wrote:
> > 
> > ---------- Forwarded message ----------
> > From: Alex Roithman < kaperang07 at gmail.com >
> > Date: 18 November 2015 at 22:17
> > Subject: libcacard: forward declaration of VReader
> > To: qemu-discuss at nongnu.org
> > 
> > 
> > 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
> 
> > 
> > 
> > _______________________________________________
> > Spice-devel mailing list
> > Spice-devel at lists.freedesktop.org
> > http://lists.freedesktop.org/mailman/listinfo/spice-devel
> > 
> 
> 
> 
> --
> Marc-André Lureau
> 
> 
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