From 252e3a1526dc01c5e5024a4ff4f4fb2e87fbc3d2 Mon Sep 17 00:00:00 2001
From: Joerg Bornemann <joerg.bornemann@qt.io>
Date: Wed, 13 Apr 2022 09:01:48 +0200
Subject: [PATCH] CMake: Add rudimentary c++2b feature

This fixes the "Could not find feature c++2b." error when building a Qt
module with qmake.

The feature is OFF by default for now.

This amends commit b5ed3cb7baeb6d77c375134719ee04ffcc211b9f.

Pick-to: 6.2 6.3
Change-Id: Ibabe3ce29275699e66ab1f32d19d583d6bcede9e
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
---
 configure.cmake | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/configure.cmake b/configure.cmake
index 30d9551b6b3..ffd79c7c3a1 100644
--- a/configure.cmake
+++ b/configure.cmake
@@ -641,6 +641,11 @@ qt_feature("c++2a" PUBLIC
     CONDITION QT_FEATURE_cxx20
 )
 qt_feature_config("c++2a" QMAKE_PUBLIC_QT_CONFIG)
+qt_feature("c++2b" PUBLIC
+    LABEL "C++2b"
+    AUTODETECT OFF
+)
+qt_feature_config("c++2b" QMAKE_PUBLIC_QT_CONFIG)
 qt_feature("c89"
     LABEL "C89"
 )