Can't access QtSerialPort, other includes
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I have recently installed Qt5.4 on Opensuse 12.3, where I have had
Qt 4.8 for a while - However, when I try to compile a program that does a lot
of serial communications and runs well under 4.8,
(and having taken LIB -lQtSerialPort out of the project file
and put in QT += serialport)I get "No such file or directory" at the line
#include <QtSerialPort/QtSerialPort>I have tried putting into the project file
INCLUDEPATH += </opt/Qt5.4.0/5.4/gcc_64>
and variants such as INCLUDEPATH += </opt/Qt5.4.0/5.4/gcc_64/include>but this does not help. When I put the whole path in
#include </opt/Qt5.4.0/5.4/gcc_64/include/QtSerialPort/QtSerialPortDepends>
etc.I get
"Q_NULLPTR was not declared in this scope"at line 182 of qserialport.h
explicit QSerialPort(QObject *parent = Q_NULLPTR);
This runs fine on a machine that I have installed Opensuse13.1 on, where the installation
was done by Opensuse 13.1.Thanks for any hints !!
Paul
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Hi and welcome to devnet,
Are you sure you are using the correct qmake ? Kit ? Qt version ?
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Thanks for the reply -
The Kit and Qt version I checked in the project settings a few times.
I also uninstalled and re-installed, and tried a different directory
(/usr/Qt). I installed from an live "installer" and then tried downloading
the 600ish MByte static installer. These are generic linux,
I wonder if they're ok with Qt 12.3, or if somehow the include
directory is mixed up because Qt4.8 is still there.I didn't check the qmake - how would I do that?
Thanks
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Did you also update your project to use the new Kit ?
If you are using Qt Creator to build your project, the qmake version should be set correctly. It must be the one located in your Qt installation.
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Thanks for your reply.
I'm not sure what you mean by "update your project". I opened the project in the (new version of) Qt Creator, and under "Tools -> Options -> Build and Run set Kits and Qt versions. Is there something else that should have been done?
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Could it be the version of g++? It's 4.7 . .
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If I start a new project, and try to
#include <QtSerialPort/QtSerialPort. it works!DO you think that's the best solution?
Thanks
Paul
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At some point, it might be simpler to indeed recreate the project from scratch.
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Thanks - actually, I tracked it down via qmake to the .pro.user file, which still had the Qt4 information - after deleting it, the system re-created it, and now it compiles - with some annoying complaints (won't take TRUE, insists on true)
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You're welcome !
Good !
What generates these complaints ?
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My simple program compiles, but the larger program
says "QPrinter has not been declared" in file included from /usr/include/QPlainTextEdit", despite my having added
Qt += printsupport and chanaged the header calls in my code
as suggested to
#include <QtPrintSupport/QPrinter>,
and also
‘QT_STATIC_CONST’ does not name a type, which I gather
is an incompatibility between qwt and Qt5.4 -
"/usr/include/QPlaintTextEdit" ?