Objective-C doesn't recognize C2x or C18

[dreamer-coding-555]

Describe the bug Seems Objective-C doesn't recognize C2x or C18 standards, and it works when I set the standard to C17 but this doesn't seem to help with my libraries which use C2x by default.

To Reproduce

project('objc test', 'objc', default_options: ['c_std=c2x'])

executable('pizza', 'main.m')

Expected behavior I expect it to compile even with this new standard of C, assuming Objective-C is still an extinction of C after all of the years it's been around.

system parameters

• It was a CI build?
• operating systems (MacOS latest, Windows latest, Windows 2022, Ubuntu latest)
• python 3.13.0
• meson 1.2.0, 1.3.0, 1.4.0 <- versions used in CI test run
• ninja 1.11.1

[dreamer-coding-555]

Already have a working solution, and seems it is possible to configure subprojects to use a different standard.