Just exactly same problem which mentioned on QTBUG-76957 but in different file :
 qtwebengine/src/3rdparty/chromium/third_party/webrtc/rtc_base/physicalsocketserver.*
 adding
 #include <linux/sockios.h>
 solved problem
- is duplicated by
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QTBUG-78067 webrtc build failure with glibc-2.30/linux-5.2
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     - Closed
 
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- relates to
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QTBUG-76957 Forgotten include causes qt not compile (master branch) error: ‘SIOCGSTAMP’ was not declared in this scope
-         
 - Closed
 
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