[Xen-devel] proper way to build out-of-tree module

["Cihula, Joseph" <joseph.cihula@xxxxxxxxx>]

I'm trying to build a kernel module for dom0 where the source code for
the module resides in a directory other than the linux src tree (it is
is $(XEN_ROOT)/tboot/txt-test).

I though that what I needed to do was to first build the .o in the local
dir then do:
        $(MAKE) -C $(XEN_ROOT)/build-linux-2.6.18-xen_x86_64 M=$(CURDIR)
modules

And for the .o build, I set the include path to be
-I$(XEN_ROOT)/linux-2.6.18-xen.hg/include.

However, when the source file tries to #include <linux/delay.h> it
returns an error:
        In file included from txt-test.c:39:
        /xen/xen-txt.hg/tboot/txt-test/../../linux-2.6.18-
xen.hg/include/linux/delay.h:12:23: error: asm/delay.h: No such file or
directory
since there is no 'asm' link to 'asm-x86_64' in the linux src tree.

Suggestions?

Joe

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