# Qt libraries provided with DigiEL-5.0 have been built incorrectly

**URL:** <https://forums.digi.com/t/qt-libraries-provided-with-digiel-5-0-have-been-built-incorrectly/6268>\
**Category:** Linux\
**Created:** [June 17, 2010, 10:50pm UTC](https://forums.digi.com/t/qt-libraries-provided-with-digiel-5-0-have-been-built-incorrectly/6268 "2010-06-17T22:50:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![philgp](https://avatars.discourse-cdn.com/v4/letter/p/d26b3c/32.png) [@philgp](https://forums.digi.com/u/philgp)\
**Post date:** [June 17, 2010, 10:50pm UTC](https://forums.digi.com/t/qt-libraries-provided-with-digiel-5-0-have-been-built-incorrectly/6268/1 "2010-06-17T22:50:00Z")

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I’ve found that the Qt 4.4.3 libraries supplied with DigiEL-5.0 have a problem converting between double precision floating point and numerical ASCII representations.

The symptoms that led me to finding this are:  
Application locks up using 100% CPU when setting a style sheet that uses a gradient fill pattern.  
Application locks up using 100% CPU when using QString to format a double precision number (using QString::arg()).

To fix this problem, the qt-embedded libraries need to be rebuilt, specifying -armfpa on the configure script’s command line. Without -armfpa, the script tries to auto-detect the target’s floating point byte order, but fails and picks an incorrect default, resulting in the libraries using the wrong byte order for floating point internal representations.

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**Author:** ![philgp](https://avatars.discourse-cdn.com/v4/letter/p/d26b3c/32.png) [@philgp](https://forums.digi.com/u/philgp)\
**Post date:** [June 28, 2010, 11:22am UTC](https://forums.digi.com/t/qt-libraries-provided-with-digiel-5-0-have-been-built-incorrectly/6268/2 "2010-06-28T11:22:57Z")

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I’ve updated to DigiEL-5.2, and found that the Qt libraries still have this problem.

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**Author:** ![rbergvm](https://avatars.discourse-cdn.com/v4/letter/r/54ee81/32.png) [@rbergvm](https://forums.digi.com/u/rbergvm)\
**Post date:** [March 20, 2011, 11:44am UTC](https://forums.digi.com/t/qt-libraries-provided-with-digiel-5-0-have-been-built-incorrectly/6268/3 "2011-03-20T11:44:29Z")

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Hi, I updated using package manager to del-5\_2-qt45 (QT V 4.5.3) and now this is solved.