8 Mar
2022
8 Mar
'22
16:23
Hello Dieter, Am Dienstag, 8. März 2022, 12:02:04 CET schrieb dieter: ....
The used gcc7-7.5.0 should support "optional", but C++17 support has to be enabled explicitly with the option: -std=c++17 (or -std=gnu++17 if GNU extensions are wanted).
adding the compiler option fixed the problem for Leap 15.4. Other builds are running to make sure it does not break the rest. Thanks for the hint! Axel