[Buildroot] [PATCH] glibc: needs kernel headers >= 4.5 on mips(64)

From: Yann E. MORIN <yann.morin.1998@free.fr>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH] glibc: needs kernel headers >= 4.5 on mips(64)
Date: Tue, 29 Aug 2017 23:09:15 +0200	[thread overview]
Message-ID: <20170829210915.GB3338@scaer> (raw)
In-Reply-To: <20170820144154.15347-1-romain.naour@gmail.com>

Romain, All,

On 2017-08-20 16:41 +0200, Romain Naour spake thusly:
> Since glibc 2.23 [1]:
> sysdeps/unix/sysv/linux/mips/configure.ac
> [...]
> if test -z "$arch_minimum_kernel"; then
>   if test x$libc_cv_mips_nan2008 = xyes; then
>     arch_minimum_kernel=4.5.0
>   fi
> fi
> 
> This mean that if nan2008 support is requested (i.e BR2_MIPS_NAN_2008
> in Buildroot) the minimum kernel headers version is 4.5.0 (not 3.2.0).
> 
> To simplify the dependancy handling in Buildroot we add this dependency
> for all mips(64), even if BR2_MIPS_NAN_2008 is not selected.
> 
> [1] https://sourceware.org/git/?p=glibc.git;a=commit;h=d5f2798a0ac9d5ad8ad7a506a2f840035135e2d2
> 
> Signed-off-by: Romain Naour <romain.naour@gmail.com>
> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
> Cc: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
> ---
> 
> This is for master.
> 
> I tried to use BR2_MIPS_NAN_2008 but it trigger a circular dependency in Kconfig.

After the discussion in this thread and on IRC, I've marked this patch
as "Changes Requested".

Now I just have to polish my own series that has a fix for that issue...

Thanks! ;-)

Regards,
Yann E. MORIN.

>  toolchain/toolchain-buildroot/Config.in | 10 ++++++++--
>  1 file changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/toolchain/toolchain-buildroot/Config.in b/toolchain/toolchain-buildroot/Config.in
> index f47001f..967da1a 100644
> --- a/toolchain/toolchain-buildroot/Config.in
> +++ b/toolchain/toolchain-buildroot/Config.in
> @@ -43,8 +43,9 @@ config BR2_TOOLCHAIN_BUILDROOT_UCLIBC
>  config BR2_TOOLCHAIN_BUILDROOT_GLIBC
>  	bool "glibc"
>  	depends on BR2_arm         || BR2_armeb      || BR2_aarch64 || \
> -		   BR2_aarch64_be  || BR2_i386       || BR2_mips    || \
> -		   BR2_mipsel      || BR2_mips64     || BR2_mips64el|| \
> +		   BR2_aarch64_be  || BR2_i386       || \
> +		   ((BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el) && \
> +		   BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5) || \
>  		   BR2_powerpc     || BR2_powerpc64  || BR2_powerpc64le || \
>  		   BR2_sh          || BR2_sparc64    || BR2_x86_64 || \
>  		   BR2_microblaze || BR2_nios2
> @@ -65,6 +66,11 @@ comment "glibc needs a toolchain w/ dynamic library, kernel headers >= 3.2"
>  	depends on BR2_USE_MMU
>  	depends on BR2_STATIC_LIBS || !BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_2
>  
> +# glibc require kernel headers >= 4.5 if nan2008 support is selected.
> +comment "glibc on mips(64) needs a toolchain w/ headers >= 4.5"
> +	depends on BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
> +	depends on !BR2_TOOLCHAIN_HEADERS_AT_LEAST_4_5
> +
>  config BR2_TOOLCHAIN_BUILDROOT_MUSL
>  	bool "musl"
>  	depends on BR2_aarch64	  || BR2_arm     || BR2_armeb     || BR2_i386 || \
> -- 
> 2.9.5
> 
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot

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