where/what are static plugins?

[ht1]

Great, Jacek, you may have figured out what the problem is. I do not know how to link properly using the command line. I've been doing:

1) prompt>qmake -project
2) then manually add the plugin info to the myproject.pro as shown in an earlier post
3) prompt>qmake
4) prompt>make

I guess I have to use -l in step 4?? How?
Thanks again

[jacek]

I guess I have to use -l in step 4?? How?

Actually make should do that for you. What is the last command it runs?

[ht1]

Hi Jacek,

The last command I run when I compile is
prompt> make
I don't know if that's what you meant when you asked about the last command?

The last thing the compiler does before giving error message is:
-LC:/Qt/4.3.3/plugins/imageformats/ -lqmng4 -lQtGui -ldgi32 -lcomdlg32 -loleaut32 -limm32 -lwinmm -lwinspool -lmsimg32 -lQtCore -lkernel32 -luser32 -lshell32 -luuid -lole32 -ladvapi32 -lws_32
(hopefully I didn't make mistakes copying it down)

[jacek]

I don't know if that's what you meant when you asked about the last command?

I asked you about the last command that make runs.

Run:

make > aaa.txt

After make finishes its job, open aaa.txt and find the line with lots of "-l<something>" (it should be near the end of that file) and post it here.

[ht1]

Hi again.

I didn't find the aaa.txt but
the last thing the compiler does before giving error message is:

-LC:/Qt/4.3.3/plugins/imageformats/ -lqmng4 -lQtGui -ldgi32 -lcomdlg32 -loleaut32 -limm32 -lwinmm -lwinspool -lmsimg32 -lQtCore -lkernel32 -luser32 -lshell32 -luuid -lole32 -ladvapi32 -lws_32

[ht1]

Jacek, you are asking a very good question about the compiler. The compiler says:

-LC:/Qt/4.3.3/plugins/imageformats/ -lqmng4 -lQtGui -ldgi32 -lcomdlg32 -loleaut32 -limm32 -lwinmm -lwinspool -lmsimg32 -lQtCore -lkernel32 -luser32 -lshell32 -luuid -lole32 -ladvapi32 -lws_32

but my working directory is Qt/static, not Qt/4.3.3. Seems like the system is confused about the folder where imageformat flugins are. What does that mean?

I just put the imageformat plugins in the folder that compiler wants. Now the error is:
"cannot find -lqjpeg4"

[jacek]

What does that mean?

It means that most likely you were using the wrong qmake.

Run:

make clean
C:\Qt\static\bin\qmake
make

[ht1]

Jacek, you are a genius! Thank you so much, your suggestion worked and now everything is perfect!

After two weeks of banging my head against the wall!

[vietdoor]

Hi all,

How to use and build the jpg plugin on QtCreator?

I got the error = undefined reference to `qt_plugin_instance_qjpeg()'

[guitronic]

Hi all,

How to use and build the jpg plugin on QtCreator?

I got the error = undefined reference to `qt_plugin_instance_qjpeg()'

Hi all
try use Q_IMPORT_PLUGIN(QJPEGPlugin) for Qt 5.0.2 is good