override_options: ['buildtype=release'] not working, possible regression.

[mkrogius]

I have specified override_options: ['buildtype=release'] in one of my executable targets.

On meson 0.46.1 this correctly adds -O3. On meson versions 0.49.2 and 0.51.2 it does not.

[byron-hawkins]

Same problem on Meson 0.55.3, more than a year later. Is there a reason this does not add the -O3 flag as the documentation implies it should?

[sofar]

Similarly, optimization=3 is broken as well - override_options does not undo a project wide setting.

[eli-schwartz]

https://mesonbuild.com/Release-notes-for-0-48-0.html#toggles-for-build-type-optimization-and-vcrt-type

In 0.48 (between the two versions originally reported) we added a finer-grained way to set these options. The buildtype is synced at setup time with those values, and ultimately what is used is optimization/debug, not buildtype.

Maybe we should be checking this again during override_options processing. That being said, override_options: ['optimization=3'] is NOT broken in my testing.