2022-02-17 14:04 UTC+0200 ~ Nikolay Borisov <nborisov@xxxxxxxx>
> Sometime it can be useful to haul around a statically built version of
> bpftool. Simply add support for passing STATIC=1 while building to build
> the tool statically.
>
> Signed-off-by: Nikolay Borisov <nborisov@xxxxxxxx>
> ---
>
> Currently the bpftool being distributed as part of libbpf-tools under bcc project
> is dynamically built on a system using GLIBC 2.28, this makes the tool unusable on
> ubuntu 18.04 for example. Perhaps after this patch has landed the bpftool in bcc
> can be turned into a static binary.
>
> tools/bpf/bpftool/Makefile | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
> index 83369f55df61..835621e215e4 100644
> --- a/tools/bpf/bpftool/Makefile
> +++ b/tools/bpf/bpftool/Makefile
> @@ -13,6 +13,10 @@ else
> Q = @
> endif
>
> +ifeq ($(STATIC),1)
> + CFLAGS += --static
> +endif
> +
> BPF_DIR = $(srctree)/tools/lib/bpf
>
> ifneq ($(OUTPUT),)
> --
> 2.25.1
>
Why not just pass the flag on the command line? I don't think the
Makefile overwrites it:
$ CFLAGS=--static make
Quentin
