Static compile with jpg support

[ksqt]

I'm using Qt 4.1.1. With the open source version for windows(installed with the .exe) my program works fine. I can manipulate, etc. jpeg images. But if I try the open source "source" and build it, I cannot work with jpeg images. (configure -static)
Perhaps I am missing a switch during "configure"...

Also, how do I use "libjpeg"?

[wysota]

-no-libjpeg ........ Do not compile the plugin for JPEG support.
-qt-libjpeg ........ Use the libjpeg bundled with Qt.
-system-libjpeg .... Use libjpeg from the operating system. See http://www.ijg.org

[ksqt]

-no-libjpeg ........ Do not compile the plugin for JPEG support.
-qt-libjpeg ........ Use the libjpeg bundled with Qt.
-system-libjpeg .... Use libjpeg from the operating system. See http://www.ijg.org

ah...that is "libjpeg"...
I have already tried that "configure -static -release -qt-libjpeg" and built, but the program will not work. (identical program with shared works )

[wysota]

Check if Qt builds a static libjpeg library. If not, this could be a bug and should be reported to TT.

[ksqt]

Check if Qt builds a static libjpeg library. If not, this could be a bug and should be reported to TT.

Where would I check to see if it did build a "libjpeg" library?
Sorry for such newbee-ish questions....

[wysota]

Probably somewhere around src/3rdparty/libjpeg directory relative to unpacked Qt source

[ksqt]

src\3rdparty\libjpeg exists.......so.......?

[wysota]

So nothing check if Qt compiles a static version of the library when you pass -static and -qt-libjpeg to configure and start compilation. If you have problems, use Google. After all, this is Qt devoted forum not a "general compilation issues" one.

[ksqt]

Qt builds just fine with configure -release -static -qt-libjpeg
Only thing is, I cannot get a program to work that manipulates, opens, saves, etc. a jpg....
It compiles fine, it just gives an error when trying to open a jpg.
The exact same code works when using Qt as shared, though....

It's no big deal, I am just testing the waters against MFC (my "limited" background)

[wysota]

I know Qt builds fine. But after that build is completed, check if a static version of libjpeg was built (it should be in the directory already mentioned) -- it'll probably be called libjpeg.a or jpeg.a or something like that... I don't know Windows naming schemes for static libraries (but it surely won't have a "dll" extension).

[ksqt]

Thanks....
There is not any file there with that name....
However in \plugins\imageformats there is a "libqjpeg.a"....
Perhaps this is what I need? If so, how to use?

Again, I thank you for your perserverance....

[wysota]

Yes, this might be what you need (it's a static version of the image plugin). You need to link your application with it. Consult QMake reference for details.