[Buildroot] ebtables and musl
Markus Mayer
mmayer at broadcom.com
Fri Jun 12 20:10:28 UTC 2020
Hi all,
I see this patch in Buildroot:
http://lists.busybox.net/pipermail/buildroot/2017-February/184225.html
However, I am still running into the issue it is supposed to fix.
This is with musl-1.2.0, the latest and greatest. I'm no longer stuck
with the ancient libmusl that caused issues with procps. It doesn't
seem to help with ebtables, though.
/mnt/disk1/Development/br-musl/output/arm64/host/bin/aarch64-linux-gcc
-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os
-fPIC -O3 -DPROGVERSION=\"2.0.10-4\" -DPROGNAME=\"ebtables\"
-DPROGDATE=\"December\ 2011\" -D_PATH_ETHERTYPES=\"/etc/ethertypes\"
-DEBTD_ARGC_MAX=50 -DEBTD_CMDLINE_MAXLN=2048
-DLOCKFILE=\"/var/lib/ebtables/lock\" -DLOCKDIR=\"/var/lib/ebtables/\"
-c -o extensions/ebt_802_3.o extensions/ebt_802_3.c -Iinclude/
In file included from include/linux/netfilter_bridge.h:8:0,
from include/linux/netfilter_bridge/ebtables.h:17,
from include/ebtables_u.h:28,
from useful_functions.c:25:
include/linux/if_ether.h:119:8: error: redefinition of 'struct ethhdr'
struct ethhdr {
^~~~~~
In file included from
../../host/aarch64-buildroot-linux-musl/sysroot/usr/include/netinet/ether.h:8:0,
from include/ebtables_u.h:27,
from useful_functions.c:25:
../../host/aarch64-buildroot-linux-musl/sysroot/usr/include/netinet/if_ether.h:113:8:
note: originally defined here
struct ethhdr {
^~~~~~
Makefile:78: recipe for target 'useful_functions.o' failed
make[2]: *** [useful_functions.o] Error 1
make[2]: *** Waiting for unfinished jobs....
I am not quite sure what to make of it yet.
Is it cause by the fact that include/linux/if_ether.h defines
#ifndef _LINUX_IF_ETHER_H
#define _LINUX_IF_ETHER_H
but include/netinet/if_ether.h defines
#ifndef _NETINET_IF_ETHER_H
#define _NETINET_IF_ETHER_H
and they both end up being included?
$ find . -name if_ether.h -ls
6025818 4 -rw-r--r-- 1 mmayer mmayer 1506 May 26
16:30 ./build/linux-custom/include/linux/if_ether.h
6028683 8 -rw-r--r-- 1 mmayer mmayer 7461 May 26
16:30 ./build/linux-custom/include/uapi/linux/if_ether.h
6047054 8 -rw-r--r-- 1 mmayer mmayer 5751 Dec 15
2011 ./build/ebtables-2.0.10-4/include/linux/if_ether.h
5934557 8 -rw-r--r-- 1 mmayer mmayer 7016 Jun 10
16:52 ./host/aarch64-buildroot-linux-musl/sysroot/usr/include/linux/if_ether.h
5935035 4 -rw-r--r-- 1 mmayer mmayer 3625 Jun 10
16:52 ./host/aarch64-buildroot-linux-musl/sysroot/usr/include/netinet/if_ether.h
Also, there's five different copies of if_ether.h floating around.
While we are on the topic of ebtables, why is buildroot still using
v2.0.10-4 from 2014 when there is 2.0.11 from 2019 (as per
http://ftp.netfilter.org/pub/ebtables/)? Is it just a matter of
submitting a patch to update it or is there an underlying reason to
keep the old version around?
Thanks,
-Markus
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