Browser Development • Re: 34.2.0 build failed, --enable-jxl unknown ??

--enable-jxl is no longer a valid mozconfig flag, because JPEG XL support is always built and that flag has been no-op for a pretty long time now. You should remove it.

Yeah, after removing that option from .mozconfig half-time in the build process I noticed libmedia_libjxl being built. Now forgive me for sounding like a Vulcan but breaking the building process due to a redundant option seems... illogical. The logical way would be to add all such redundant/obsolete options to an internal list, and when any of them is encountered just notify the user about its status - do it in bold red font if necessary - and let the build continue normally.

I wonder, would that option's counterpart ( --disable-jxl ) be available and valid? Who knows, maybe someone would want/need it for whatever reason.