[QTBUG-91090] CPU feature detection broken with CMake - Qt Bug Tracker

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Type: Bug
Status: Closed
Priority: P3: Somewhat important
Resolution: Done
Affects Version/s: 6.1.0 Alpha
Fix Version/s: 6.3.0 Alpha
Component/s: Build System: CMake
Labels:
- cmake_qt6

Epic Link:
CMake Port: Milestone 7
Commits:
129dae5dbd0b4e51433a00b41282bcb8850fb2e3 (qt/qtbase/dev)

Description

After searching a bit, I found this option to add compiler flags to configure.

../configure – -DCMAKE_CXX_FLAGS_RELEASE=-march=skylake

But the configure overview still says:

"Building for: linux-g++ (x86_64, CPU features: mmx sse sse2)"

Which means Qt isn't aware the cpu feature is enabled unconditionally (or the output is wrong).

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Assignee:: Qt Build System Team

Reporter:: Allan Sandfeld Jensen

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Dates

Created:: 11 Feb '21 17:33

Updated:: 20 Sep '21 11:19

Resolved:: 20 Sep '21 11:19

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Pass CMAKE compiler flags to arch detection: Gerrit Review: