[Interest] How do I use qextserialport as a library?

Robert Wood robert.wood at apostrophe.co.uk
Sun Mar 18 17:52:48 CET 2012


I've used qextserialport many times, but always included the source code 
in the my project. However, the it says it's better to use it as a 
library and it would be nice not to include all those source files each 

However, I can't work out how to do this.

I've downloaded the source, gone into the buildlib directory, done qmake 
and make (as root) after uncommenting QEXTSERIALPORT_LIBRARY = yes.

I get thie following in /usr/lib

-rwxr-xr-x 1 root root 456104 Oct  9 21:19 libqextserialport.so*
-rwxr-xr-x 1 root root 456104 Oct  9 21:19 libqextserialport.so.1*
-rwxr-xr-x 1 root root 456104 Oct  9 21:19 libqextserialport.so.1.2*
-rwxr-xr-x 1 root root 456104 Oct  9 21:19 libqextserialport.so.1.2.0*

I've put this in the .pro file:

LIBS  += /usr/lib/libqextserialport.so

Tried all sorts with #include and to be on the safe side:

#include "/home/robertw/Software/qextserialport/src/qextserialport.h" 
where the include file definitely is.

When I try to compile I get:

error: undefined reference to `QextSerialPort::QextSerialPort(QString 
const&, QextSerialPort::QueryMode, QObject*)'

For this line:

         vcp = new QextSerialPort(s);

This is exactly how I open a port when I include the source, so this 
line is not wrong (s is a string of its name).

Would someone be able to advise what I'm doing wrong please?

Thanks! :~)

More information about the Interest mailing list