Following patchset enable the possibility to specify CFLAGS, AFLAGS or CPPFLAGS on the commandline to add additional options while building the kernel.
The patch prefix all uses of CFLAGS, AFLAGS and CPPFLAGS with KBUILD_ which touches all arch Makefiles. Regression testing was very simple. Since this patch did not change behaviour adding the patch should not cause any recompile and this was tested with defconfig on several architectures. To be more specific on: alpha arm i386 mips sparc sparc64 x86_64 ia64 m68k s390 powerpc I dave a toolchain but defconfig seems not to be present. blackfin and um did not build. A small cleanup patch for ia64 sneaked in too - to allow the above mentioned regression test. The patchset will conflict with a patch from Andi Kleen. If the patch for x86_64 will be pushed for -rc - no troubles. If the patch await next mergewindow I could take it in my tree to avoid the conflict. The patch in question is: ftp://ftp.firstfloor.org/pub/ak/x86_64/quilt/patches/cflags-probe The purpose of this patch is to make it much simpler to try out different gcc options. The receipe is the following: make CFLAGS=-fmuch-quicker-kernel mm/slub.o make KBUILD_NOCMDDEP=1 The KBUILD_NOCMDDEP=1 tell kbuild not to check any commandline arguments and can be used to change options AND compiler. Without this kbuild would detech changes in commandline options and rebuild mm/slub.o again. Any objections to this change? Sam ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kbuild-devel mailing list kbuild-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kbuild-devel
