• Sam Ravnborg's avatar
    x86: unification of arch/x86/Makefiles · 0a6ef376
    Sam Ravnborg authored
    Unify the 32 and 64 bit specific Makefiles.
    The unification was simplest to do in one step although the
    readability of the patch suffers a bit from this.
    
    Noteworthy remarks on the unification:
    - The 64 bit cpu stuff should be moved to Makefile_32.cpu
      but I did not feel confident doing it due to subtle differences
    - The use of cflags-y were abandoned since we have seen one bug where
      we did wrong due to missing assignment to KBUILD_CFLAGS.
      The cc-option marcro uses KBUILD_CFLAGS.
    - The "No need to remake" line are deleted. It caused "make -B" to fail
    - For 64 bit the sub architecture stuff is not used.
    - The way head64.o is specified could be nicer - but it awaits the
      introduction of head32.o (which seems like a win to introduce for readability)
    - Patch is checkpatch clean
    
    Patch is tested by doing a defconfig build for i386 and x86_64 and in both
    cases monitoring that only relevant files were recompiled when applying
    the patch.
    
    [ mingo@elte.hu: build fix ]
    Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
    Cc: "H. Peter Anvin" <hpa@zytor.com>
    Cc: Andi Kleen <ak@suse.de>
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
    0a6ef376
Makefile 7.81 KB