On Sat, Jul 30, 2005 at 05:29:21PM -0400, Michael Krufky wrote:Sam-
With the addition of topdir-mm.patch into the -mm tree (since 2.6.13-rc3-mm2), it is now possible for Makefile to detect whether a cvs subtree is being built against -mm or not... -mm kernels now have a .mm file in the top level directory.
mm-kernel := $(TOPDIR)/.mm
MM_KERNEL_CFLAGS := -DMM_KERNEL=$(shell cat $(mm-kernel) 2> /dev/null)
EXTRA_CFLAGS += $(MM_KERNEL_CFLAGS)
The content of the .mm file seems to be insignificant - '1'. The important
issue is that the file is present.
Also please do not use $(TOPDIR) - it is deprecated.
The following is enough:
EXTRA_CFLAGS += $(if $(wildcard $(srctree)/.mm), -DMM_KERNEL)
If the file exist in the root of the kernel src tree MM_KERNEL will be
added to EXTRA_CFLAGS.