[systemd-devel] [PATCH] ease installation on non-running kernels

[Greg KH]

On Tue, Jun 17, 2014 at 02:52:43PM -0400, Dave Reisner wrote:
> This lets KERNELDIR apply to the install target as well so that you can
> do something such as the following will Just Work™:
> 
>   make KERNELDIR=/lib/modules/3.15.0-foo install
> ---
>  Makefile | 14 +++++++-------
>  1 file changed, 7 insertions(+), 7 deletions(-)
> 
> diff --git a/Makefile b/Makefile
> index c593b51..fe4dd58 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -17,7 +17,7 @@ kdbus$(EXT)-y := \
>  
>  obj-m += kdbus$(EXT).o
>  
> -KERNELDIR 		?= /lib/modules/$(shell uname -r)/build
> +KERNELDIR 		?= /lib/modules/$(shell uname -r)
>  PWD			:= $(shell pwd)
>  
>  all: module test
> @@ -26,7 +26,7 @@ test::
>  	$(MAKE) -C test KBUILD_MODNAME=kdbus$(EXT)
>  
>  module:
> -	$(MAKE) -C $(KERNELDIR) M=$(PWD)
> +	$(MAKE) -C $(KERNELDIR)/build M=$(PWD)

Nope, you just broke the build on my machine when I wanted to build
against the kernel source tree in /home/gregkh/linux/ that does not have
a build/ subdirectory in it.

What is wrong with putting the build/ trailing subdir in your build
command line?  What is currently broken today with the build system?

And long-term, this will not be an issue at all as the code will be
merged into the kernel tree.

thanks,

greg k-h