On Sat, Feb 2, 2019 at 9:00 AM Alexei Starovoitov <alexei.starovoi...@gmail.com> wrote: > > 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.masah...@socionext.com> > > --- > > > > 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
This hunk is not a question. The code #include "include/uapi/linux/bpf.h" is wrong if you understand the meaning of #include "..." https://gcc.gnu.org/onlinedocs/cpp/Search-Path.html The directive #include "include/uapi/linux/bpf.h" means the preprocessor should look for this header first in the path relative to the directory of net/bpfilter/main.c That is, the preprocessor will look for net/bpfilter/include/uapi/linux/bpf.h which obviously does not exist. I am fixing this because adding -I. in kernel Makefile is always wrong. For example, commit 5cd5548ff439b91 -- Best Regards Masahiro Yamada
