could not find qtplatfom plugin eglfs

[jsulm]

@Asha said in could not find qtplatfom plugin eglfs:

Any suggestions please?.......

"qmake /home/beagle/Qt5/bin/qmake" - what is this line supposed to be?!
It should be

/home/beagle/Qt5/bin/qmake

[Asha]

@jsulm yes,i gave this one /home/beagle/Qt5/bin/qmake

After this i got the makefile,
the gave the make

after this make getting the error

arm-linux-gnueabihf-g++: error : .o No such file or directory
Makefile:141: recipe for target 'sample' failed
make: ***[sample] Error 1

when i list the files ,i got the sample.o file

so I copied that obj file in my board using scp,

And executing that sample.o file in board,
./sample.o platform=vnc

getting the error:

-bash: ./sample.o: cannot execute binary file: EXec format error

[jsulm]

@Asha You can't execute *.o files!
Those needs to be linked together to an executable.

"arm-linux-gnueabihf-g++: error : .o - please delete everything in your build directory, run qmake again and then build (call make).
Also this error message looks strange - there should be actual file name in front of .o

[Asha]

@jsulm

Those needs to be linked together to an executable.but i am not getting the executable file...

getting this
arm-linux-gnueabihf-g++: error : .o No such file or directory
Makefile:141: recipe for target 'sample' failed
make: ***[sample] Error 1

.o - please delete everything in your build directory,

I am not understood the above line,delete everything in build directory means,I need to delete the Qt5 directory files and directories?

[jsulm]

@Asha said in could not find qtplatfom plugin eglfs:

I need to delete the Qt5 directory files and directories?

No.
What I mean is: delete all build artefacts from previous builds (like *.o files, Makefiles).

[Asha]

@jsulm I deleted the all makefiles and .o files now tring to execute sample.o file but getting the -bash: ./sample.o:cannot execute binary file: Exec format error..

"You can't execute *.o files!",Please suggest me where i need to link that .o file(I am not getting any executable file)..

[jsulm]

@Asha said in could not find qtplatfom plugin eglfs:

"You can't execute *.o files!",Please suggest me where i need to link that .o file(I am not getting any executable file)..

You just need to build again!
"I am not getting any executable file" - yes, because your build fails.
Before I wrote: please delete everything in your build directory, run qmake again and then build (call make).
So again: please run qmake and build.

[Asha]

@jsulm

Hi,

I done once again qmake and make,

After make ,I got

undefined reference to 'main'
collect2: error :ld returned 1 exit status
Makefile:137: recipe for target 'sample 'failed'
make: *** [sample] Error 1

After listing the files,the result is

Makefile
.qmake.stash
sample.cpp
sample.pro

I am not getting ,what is the problem....

[jsulm]

@Asha Does your sample.cpp contain main() function?

[Asha]

@jsulm
yes,

#include <QCoreApplication>
#include <QString>
#include <QFile>
#include <QDir>
#include <QTextStream>
#include <QDebug>
int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
// prepare the message
QString message("Hello World!");
// prepare a file in the users home directory named out.txt
QFile file(QDir::home().absoluteFilePath("out.txt"));
// try to open the file in write mode
if(!file.open(QIODevice::WriteOnly)) {
qWarning() << "Can not open file with write access";
return -1;
}
// as we handle text we need to use proper text codecs
QTextStream stream(&file);
// write message to file via the text stream
stream << message;
return 0;
}
~                       

[jsulm]

@Asha Please show your pro file

[Asha]

@jsulm here is my .pro file

Qt += core gui

sources += \ sample.cpp

target.path=/home/debian/Qt5
INSTALLS +=target

[jsulm]

@Asha said in could not find qtplatfom plugin eglfs:

\ sample.cpp

why do you have backslash in front of sample.cpp?
"Qt += core gui" must be "QT += core gui"

[edit: Fixed variable name SGaist]

[Asha]

@jsulm as you said i followed but getting the same result,

please say me tje .pro file for that .cpp file

[SGaist]

You don't even need to modify the QT variable content based on your code. However, as @jsulm wrote, your SOURCES line is wrong.

In any case it should rather be

QT += core gui
SOURCES += sample.cpp

Casing is important.