On Fri, 05 Apr 2002 21:26:08 +1000, Keith Owens <[EMAIL PROTECTED]> wrote: >kbuild 2.4: > make oldconfig 0:07 > make dep 0:37 (make -j dep is unsafe on some architectures) > make -j8 bzImage modules 14:16 > Total 15:00 > make -j8 bzImage modules 2:10 (second run, no changes, spurious rebuilds) > >kbuild 2.5: > make -j8 oldconfig installable 8:51 (no make dep needed :) > make -j8 oldconfig installable :14 (second run, no changes)
Just to avoid any confusion. kbuild 2.4 is the existing kernel build system, as used in Marcelo's and Linus's kernels. kbuild 2.5 is the complete rewrite of the kernel build system. Although it says 2.5, kbuild 2.5 will run on 2.4 kernels, it was developed on 2.4. The timings above were for exactly the same .config on the same build machine, building a 2.4.16 kernel, using the existing and new kernel build system. Compared to the existing build system, kbuild 2.5 is much more robust (I found several bugs in the 2.4 rules while developing kbuild 2.5), provides more facilities, has debugging information, is more accurate (2.5 tracks everything, 2.4 only managed about 80% tracking accuracy) and still manages to run 30% faster than the existing build system. Although kbuild 2.5 will run on 2.4 kernels, I have no plans to send all of kbuild 2.5 to Marcelo. Changing the kernel build on a stable kernel is a bad idea. I will be sending some kbuild 2.4 bug fixes to Marcelo but not the rest of kbuild 2.5. I am now working on kbuild 2.5 patches for 2.4.18, 2.4.19-pre6, 2.5.7 and 2.5.8-pre1 as well as for other architectures, see http://sourceforge.net/projects/kbuild for updates. _______________________________________________ kbuild-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/kbuild-devel
