Re: [PATCH] bpfilter: remove extra header search paths for bpfilter_umh

[Alexei Starovoitov]

On Thu, Jan 31, 2019 at 12:15:35PM +0900, Masahiro Yamada wrote:
> Currently, the header search paths -Itools/include and
> -Itools/include/uapi are not used. Let's drop the unused code.
> 
> We can remove -I. too by fixing up one C file.
> 
> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
> ---
> 
> Perhaps, are these extra header search paths for
> more upstreaming in the future?
> 
> If this patch is rejected, I will send an alternative one.
> 
> To clean up the Kbuild core,
> I want to drop as many unused header search paths as possible.
> 
> 
>  net/bpfilter/Makefile | 1 -
>  net/bpfilter/main.c   | 2 +-
>  2 files changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/net/bpfilter/Makefile b/net/bpfilter/Makefile
> index 0947ee7..5d6c776 100644
> --- a/net/bpfilter/Makefile
> +++ b/net/bpfilter/Makefile
> @@ -5,7 +5,6 @@
>  
>  hostprogs-y := bpfilter_umh
>  bpfilter_umh-objs := main.o
> -KBUILD_HOSTCFLAGS += -I. -Itools/include/ -Itools/include/uapi
>  HOSTCC := $(CC)
>  
>  ifeq ($(CONFIG_BPFILTER_UMH), y)
> diff --git a/net/bpfilter/main.c b/net/bpfilter/main.c
> index 1317f10..61ce845 100644
> --- a/net/bpfilter/main.c
> +++ b/net/bpfilter/main.c
> @@ -6,7 +6,7 @@
>  #include <sys/socket.h>
>  #include <fcntl.h>
>  #include <unistd.h>
> -#include "include/uapi/linux/bpf.h"
> +#include "../../include/uapi/linux/bpf.h"

argh. that's not pretty.
I would prefer to keep -I in a makefile