Unable to compile QtMultimedia Debug under PiOS

Tried to compile Qt 6.9.0 (qt-everywhere) under Raspberry Pi with PiOS.

Release compiles with no error

Debug fails to compile with error:

[ 57%] Building C object qtmultimedia/src/resonance-audio/CMakeFiles/BundledResonanceAudio.dir/__/3rdparty/pffft/pffft.c.o
/home/user/dev/compile_qt/qt-everywhere-src-6.9.0/qtmultimedia/src/3rdparty/pffft/pffft.c:1906:1: internal compiler error: in output_constant_pool_2, at varasm.c:3982

}}
      | ^
0x7f9a1d9e17 __libc_start_main
    ../csu/libc-start.c:308
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with preprocessed source if appropriate.
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gmake[2]: *** [qtmultimedia/src/resonance-audio/CMakeFiles/BundledResonanceAudio.dir/build.make:1098 : qtmultimedia/src/resonance-audio/CMakeFiles/BundledResonanceAudio.dir/__/3rdparty/pffft/pffft.c.o] Erreur 1
gmake[1]: *** [CMakeFiles/Makefile2:64134 : qtmultimedia/src/resonance-audio/CMakeFiles/BundledResonanceAudio.dir/all] Erreur 2
gmake: *** [Makefile:146 : all] Erreur 2

I'm using g++10.2.1. I configured using:

./configure -qpa xcb -feature-relocatable -prefix /home/user/dev/compile_qt/install -debug -opensource -nomake examples -nomake tests -confirm-license -skip wayland -skip qtwebengine -ffmpeg-dir /usr/bin --ffmpeg-deploy -skip qt5compat -skip qtdoc -skip qtlottie -skip qtmqtt -skip qtopcua -skip qtquicktimeline -skip qtquick3d -skip qtscxml -skip qtvirtualkeyboard -skip qtwebview -skip qtlocation -skip qtgraphs -skip qtquick3dphysics -skip qtquickeffectmaker