[Buildroot] WIP: glibc 2.16 bump

[Thomas Petazzoni <thomas.petazzoni@free-electrons.com>]

Hello,

On Mon, 14 Aug 2017 15:04:10 +0200, Romain Naour wrote:

> > Can you try with this branch ?
> > https://github.com/RomainNaour/buildroot/tree/glibc-2.26  
> 
> I started a build on gcc farm and the only failing build is powerpc64le.
> 
> I added this hunk in gcc.mk
> 
> # Since Glibc 2.26, poerpc64le requires double/long double.
> # See sysdeps/powerpc/powerpc64le/configure.ac
> ifeq ($(BR2_TOOLCHAIN_USES_GLIBC)$(BR2_powerpc64le),yy)
> HOST_GCC_COMMON_CONF_OPTS += \
> 	--with-long-double-128
> endif
> 
> I updated glibc-2.26 branch on github.
> 
> Note: float128 require at least gcc 6.2 or gcc 7.1, so we need to disable older
> gcc on powerpc64le with glibc.

OK. I'm about to start a rebuild of all my toolchains + Qemu tests with
glibc 2.26 (and gcc 7.x, binutils 2.29, etc, i.e the bleeding edge
toolchains).

FYI: the two gcc patches that you needed to build glibc 2.26 are no
longer needed once you bump gcc to 7.2.0, which I have done for this
toolchain rebuild. I'll send the gcc 7.2.0 bump patch once all
toolchains have been rebuilt.

I'll let you know the result.

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com