[Buildroot] [PATCH] package/gcc: disable gcc 9.x for csky

[Thomas Petazzoni]

Hello,

On Fri, 13 Mar 2020 00:41:27 +0100
Romain Naour <romain.naour at smile.fr> wrote:

> When building a toolchain with upstream gcc 9.x the build
> fail due to several issues.
> 
> Note: The upstream Binutils support csky target since
> release 2.32 but the support was never enabled in the
> Buildroot packaging. So the latest version (2.33.1) was
> tested here.
> 
> [upstream gcc 9.x w/ glibc csky fork with binutils csky for or binutils 2.33.1]
> In file included from <command-line>:
> ./../include/libc-symbols.h:534:26: error: '__EI___errno_location' specifies less restrictive attributes than its target '__errno_location': 'const', 'nothrow' [-Werror=missing-attributes]
>   534 |   extern __typeof (name) __EI_##name \
> 
> [upstream gcc 9.x w/ glibc 2.30 w/ binutils csky fork]
> /tmp/ccThLRhb.s: Assembler messages:
> /tmp/ccThLRhb.s:10: Error: invalid or unsupported encoding in .cfi_personality
> /tmp/ccThLRhb.s:11: Error: invalid or unsupported encoding in .cfi_lsda
> 
> [upstream gcc 9.x w/ glibc 2.30 w/ binutils 2.33.1]
> build/elf/librtld.os: in function `__sync_fetch_and_add_2':
> libgcc/config/csky/linux-atomic.c:116: undefined reference to `__kernel_cmpxchg'
> 
> Currenlty, only the toolchain using binutils, gcc, glibc
> fork produce a working toolchain. So disable gcc 9.x for
> csky.
> 
> Signed-off-by: Romain Naour <romain.naour at smile.fr>
> Cc: Yann E. MORIN <yann.morin.1998 at free.fr>
> Cc: Guo Ren <guoren at kernel.org>
> Cc: Arnout Vandecappelle <arnout at mind.be>
> Cc: Peter Korsgaard <peter at korsgaard.com>
> ---
>  package/gcc/Config.in.host | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)

Applied to master, thanks.

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com