Absence de fontes dans Qt

Salut

Sur un binaire compilé en statique et installé dans /usr/local, j'ai
le message d'erreur suivant :

QApplication: invalid style override passed, ignoring it.
QFontDatabase: Cannot find font directory /usr/local/qt/lib/fonts.
Note that Qt no longer ships fonts. Deploy some (from
http://dejavu-fonts.org for example) or switch to fontconfig.
QFontDatabase: Cannot find font directory /usr/local/qt/lib/fonts.
Note that Qt no longer ships fonts. Deploy some (from
http://dejavu-fonts.org for example) or switch to fontconfig.
QFontDatabase: Cannot find font directory /usr/local/qt/lib/fonts.
Note that Qt no longer ships fonts. Deploy some (from
http://dejavu-fonts.org for example) or switch to fontconfig.
QFontDatabase: Cannot find font directory /usr/local/qt/lib/fonts.
Note that Qt no longer ships fonts. Deploy some (from
http://dejavu-fonts.org for example) or switch to fontconfig.
QFontDatabase: Cannot find font directory /usr/local/qt/lib/fonts.
Note that Qt no longer ships fonts. Deploy some (from
http://dejavu-fonts.org for example) or switch to fontconfig.
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile

Et une absence totale de fontes dans l'UI.

Le soft est proprio évidemment et le support aux abonnées absents.

Une idée comment lui faire trouver les fontes ?

Merci d'avance,

PK

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