Hi Robert, Seems that the shared library you used is an old version of QextSerialPort. Maybe it is generated by the QextSerialPort which you download form code.google.com/p/qextsrialport before March 2012. Or maybe it generated by a old qextserialport.tar.gz.
If you did not change following files qextserialport.pri/common.pri/buildlib.pro, the shared library of qextserialport-1.2beta1 will be libqextserialport-1.2.so(.1.*), and add it will be located in the subdirectory of qextserialport's toplevel directory. |- qextserialport.pro |- common.pro |- buildlib/buildlib.pro |- src/qextserialport.pri |- |- lib/libqextserialport-1.2.so Hope this is useful for you. Regards, Debao On Mon, Mar 19, 2012 at 3:24 AM, Robert Wood <[email protected]> wrote: > Hi Debao, > > Many thanks, that's very good of you. > > I am obviously missing something fundamental here as having knocked up a > very simple test program and modding my .pro as follows: > > QEXTSERIALPORT_LIBDIR = /usr/lib/ > QEXTSERIALPORT_INCDIR =/usr/include/ > > > QT += core gui > > TARGET = SharedSerial > TEMPLATE = app > > > SOURCES += main.cpp\ > mainwindow.cpp \ > uart.cpp > > HEADERS += mainwindow.h \ > uart.h \ > defines.h > > FORMS += mainwindow.ui > > QEXTSERIALPORT_LIBNAME = $$qtLibraryTarget(qextserialport-1.2) > > INCLUDEPATH += QEXTSERIALPORT_INCDIR > LIBS += -L$$QEXTSERIALPORT_LIBDIR -l$$QEXTSERIALPORT_LIBNAME > DEFINES += QEXTSERIALPORT_USING_SHARED > > > I get the error: > > :-1: error: cannot find -lqextserialport-1.2 > > I am guessing that these double dollar signs have to be changed. My > /usr/lib directory has: > > /usr/lib/libqextserialport.so > /usr/lib/libqextserialport.so.1 > /usr/lib/libqextserialport.so.1.2 > /usr/lib/libqextserialport.so.1.2.0 > > If that's of any help. > > I'm guessing I'm doing something very naive or stupid! I'm an embedded > hardware and software engineer dealing in bits and bytes most of the > time and really struggle with this stuff! > > Thanks again. > > > > On 18/03/12 23:17, 1+1=2 wrote: >> Hi Robert, >> >> I have updated the wiki page: >> http://code.google.com/p/qextserialport/wiki/QextSerialPort_1_2_Beta1 >> >> "How to use (3)" discusses how to use QextSerialPort as shared library >> without adding "include(*****/qextserialport.pri)" to .pro file. >> And of course, in a cross platform way. >> >> Hope this can help you. >> >> If this is still refuse to work,feel free to report bugs. >> >> Regards, >> >> Debao >> >> On Sun, Mar 18, 2012 at 9:52 AM, Robert Wood >> <[email protected]> wrote: >>> \Folks, >>> >>> 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 >>> time. >>> >>> 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: >>> >>> /home/robertw/Software/Qt4/ltc1760-build-desktop/../ltc1760/ltc1760.cpp:66: >>> 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! :~) >>> _______________________________________________ >>> Interest mailing list >>> [email protected] >>> http://lists.qt-project.org/mailman/listinfo/interest >> > _______________________________________________ > Interest mailing list > [email protected] > http://lists.qt-project.org/mailman/listinfo/interest _______________________________________________ Interest mailing list [email protected] http://lists.qt-project.org/mailman/listinfo/interest
