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Date: Wed, 31 Oct 2018 11:12:08 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Andrey Ignatov <rdna@...com>
Cc: Daniel Borkmann <daniel@...earbox.net>,
Linux Networking Development Mailing List
<netdev@...r.kernel.org>
Subject: libbpf build failure on debian:9 with clang
17 40.66 debian:9 : FAIL gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516
The failure was with clang tho:
clang version 3.8.1-24 (tags/RELEASE_381/final)
With:
gcc version 6.3.0 20170516 (Debian 6.3.0-18+deb9u1)
it built without any warnings/errors.
CC /tmp/build/perf/libbpf.o
libbpf.c:2201:36: error: comparison of constant -22 with expression of type 'const enum bpf_attach_type' is always false [-Werror,-Wtautological-constant-out-of-range-compare]
if (section_names[i].attach_type == -EINVAL)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~
1 error generated.
CC /tmp/build/perf/help.o
mv: cannot stat '/tmp/build/perf/.libbpf.o.tmp': No such file or directory
/git/linux/tools/build/Makefile.build:96: recipe for target '/tmp/build/perf/libbpf.o' failed
make[4]: *** [/tmp/build/perf/libbpf.o] Error 1
This is the cset:
commit 956b620fcf0b64de403cd26a56bc41e6e4826ea6
Author: Andrey Ignatov <rdna@...com>
Date: Wed Sep 26 15:24:53 2018 -0700
libbpf: Introduce libbpf_attach_type_by_name
------------------------
Tests are continuing, so far:
1 43.53 alpine:3.4 : Ok gcc (Alpine 5.3.0) 5.3.0
2 58.62 alpine:3.5 : Ok gcc (Alpine 6.2.1) 6.2.1 20160822
3 51.62 alpine:3.6 : Ok gcc (Alpine 6.3.0) 6.3.0
4 51.68 alpine:3.7 : Ok gcc (Alpine 6.4.0) 6.4.0
5 49.38 alpine:3.8 : Ok gcc (Alpine 6.4.0) 6.4.0
6 79.07 alpine:edge : Ok gcc (Alpine 6.4.0) 6.4.0
7 63.35 amazonlinux:1 : Ok gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-28)
8 59.65 amazonlinux:2 : Ok gcc (GCC) 7.3.1 20180303 (Red Hat 7.3.1-5)
9 47.39 android-ndk:r12b-arm : Ok arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
10 50.64 android-ndk:r15c-arm : Ok arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
11 28.75 centos:5 : Ok gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-55)
12 33.26 centos:6 : Ok gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23)
13 43.16 centos:7 : Ok gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-28)
14 73.61 clearlinux:latest : FAIL gcc (Clear Linux OS for Intel Architecture) 8.2.1 20180502
15 45.56 debian:7 : Ok gcc (Debian 4.7.2-5) 4.7.2
16 45.53 debian:8 : Ok gcc (Debian 4.9.2-10+deb8u1) 4.9.2
17 40.66 debian:9 : FAIL gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516
18 113.19 debian:experimental : Ok gcc (Debian 8.2.0-8) 8.2.0
19 41.48 debian:experimental-x-arm64 : Ok aarch64-linux-gnu-gcc (Debian 8.2.0-7) 8.2.0
20 41.51 debian:experimental-x-mips : Ok mips-linux-gnu-gcc (Debian 8.2.0-7) 8.2.0
21 40.09 debian:experimental-x-mips64 : Ok mips64-linux-gnuabi64-gcc (Debian 8.1.0-12) 8.1.0
22 42.17 debian:experimental-x-mipsel : Ok mipsel-linux-gnu-gcc (Debian 8.2.0-7) 8.2.0
23 40.02 fedora:20 : Ok gcc (GCC) 4.8.3 20140911 (Red Hat 4.8.3-7)
24 45.47 fedora:21 : Ok gcc (GCC) 4.9.2 20150212 (Red Hat 4.9.2-6)
25 41.64 fedora:22 : Ok gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6)
26 43.60 fedora:23 : Ok gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6)
27 44.04 fedora:24 : Ok gcc (GCC) 6.3.1 20161221 (Red Hat 6.3.1-1)
28 37.21 fedora:24-x-ARC-uClibc : Ok arc-linux-gcc (ARCompact ISA Linux uClibc toolchain 2017.09-rc2) 7.1.1 20170710
The problem with clearlinux is unrelated:
clang-7: error: unknown argument: '-fno-semantic-interposition'
clang-7: error: unsupported argument '4' to option 'flto='
clang-7: error: optimization flag '-ffat-lto-objects' is not supported [-Werror,-Wignored-optimization-argument]
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