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by Moonchild » 2019-12-04, 20:19
It will always go through the different stages of the build process, but it will be considerably faster not building everything again. Whether a full rebuild is started even with a regular mach build depends on a number of factors (among others which files have been changed, whether the configure stage is needed, etc.) but in general just changing a few lines in a .cpp file will not trigger a full rebuild.
The AUTOCLOBBER setting is just a convenience setting: if the CLOBBER file in the tree is touched, it will automatically clobber the tree (= remove all object code) before building. If you don't set that it will simply abort the build and you have to mach clobber manually.
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