Build program do not see libegl1-mesa-dev package

[sprntl]

Hello!
I try build Qt6. In progress build program I've got 2 warnings::
WARNING: QtWebEngine won't be built. Build requires Khronos development headers for build - see mesa/libegl1-mesa-dev
WARNING: QtPdf won't be built. Build requires Khronos development headers for build - see mesa/libegl1-mesa-dev
However, libegl1-mesa-dev package is installed
What i do wrong?
My OS - Ubuntu 22.04.3 Jammy

[Axel Spoerl]

@sprntl
Khronos development headers are missing, just as the error message says.
What does find /usr -name khrplatform.h return?

[ggjj]

@Axel-Spoerl I have the same problem, and my return is
r@r-virtual-machine:~/code/qt-everywhere-src-5.15.2/build$ find /usr -name khrplatform.h
/usr/include/KHR/khrplatform.h