How exactly does it work?
I've seen some refferences about it in the kernel26mm PKGBUILD, but haven't found anything in the makepkg man page (an update would be nice).
at cli type makepkg --help and the -e switch is listed as noextract...
i mentioned it there, because if you configure your new kernel and then hit ctrl-c (not wanting to build it now, but later), then, next time you run makepkg, you do not need to wait the tar.gz extracting again, as it is already extracted
if the build already started, it is better to not use -e but a fresh tree, because some files may be "half-touched" and if the Makefile is not clean enough, it can break your building
however kernel26mm offers you 2s to ctrl-c after you configured the kernel to break ;-) :-)
it's actually not a big feature, but very usefull in some cases
The impossible missions are the only ones which succeed.
i could have used this step in RAM's package build - i was looking for something to skip the source extract - i was using a compressed patch and when the patch decompression failed - cos it already existed - it had to decompress the kernel src again - even tho it was untouched