linux-kernel - sparc64 gcc 7.1 compile error

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Message-ID: <20170605091941.GM26922@waldemar-brodkorb.de>
Date:   Mon, 5 Jun 2017 11:19:41 +0200
From:   Waldemar Brodkorb <wbx@...nadk.org>
To:     linux-kernel@...r.kernel.org
Cc:     sparclinux@...r.kernel.org, David Miller <davem@...emloft.net>
Subject: sparc64 gcc 7.1 compile error

Hi,

I get a compile/linking error with gcc 7.1 when targeting qemu system
sparc64.

+ objects='arch/sparc/kernel/head_64.o  init/built-in.o
--start-group  usr/built-in.o  arch/sparc/built-in.o
kernel/built-in.o  certs/built-in.o  mm/built-in.o  fs/built-in.o
ipc/built-in.o  security/built-in.o  crypto/built-in.o
block/built-in.o  lib/lib.a  arch/sparc/prom/lib.a
arch/sparc/lib/lib.a  lib/built-in.o  arch/sparc/prom/built-in.o
arch/sparc/lib/built-in.o  drivers/built-in.o  sound/built-in.o
firmware/built-in.o  net/built-in.o  virt/built-in.o
--end-group           '
+
/home/wbx/openadk/toolchain_qemu-sparc64_glibc_v9/usr/bin/sparc64-openadk-linux-gnu-ld
-m elf64_sparc --build-id -o vmlinux -T
./arch/sparc/kernel/vmlinux.lds arch/sparc/kernel/head_64.o
init/built-in.o --start-group usr/built-in.o arch/sparc/built-in.o
kernel/built-in.o certs/built-in.o mm/built-in.o fs/built-in.o
ipc/built-in.o security/built-in.o crypto/built-in.o
block/built-in.o lib/lib.a arch/sparc/prom/lib.a
arch/sparc/lib/lib.a lib/built-in.o arch/sparc/prom/built-in.o
arch/sparc/lib/built-in.o drivers/built-in.o sound/built-in.o
firmware/built-in.o net/built-in.o virt/built-in.o --end-group
ipc/built-in.o: In function `mq_attr_ok':
mqueue.c:(.text+0x6154): undefined reference to `__multi3'

I tried with Linux 4.11.3, Linus master and David Miller's SPARC
tree from today with the same result. The failing config is attached.

Any ideas?

best regards
 Waldemar


View attachment ".config" of type "text/plain" (33288 bytes)