Fixes #1092 issue - ‘std::optional’ has not been declared

OpenBoard-org / OpenBoard

OpenBoard is a cross-platform interactive whiteboard application intended for use in a classroom setting.

https://openboard.ch/

GNU General Public License v3.0

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Closed sebojolais closed 1 month ago

sebojolais commented 2 months ago

Fixes the #1092 issue

letsfindaway commented 1 month ago

@kaamui This patch is required for successful Qt5-based builds on several OS versions. So please merge it for 1.7.2.

grafik