[yocto] custom internal toolchain/glibc

[Burton, Ross]

On 20 July 2016 at 18:30, Robert Berger <gmane at reliableembeddedsystems.com>
wrote:

> I was wondering what's the process if someone wanted to use, say Jethro
> or Krogoth, but with different/custom versions of gcc, binutils, glibc
> e.g. to cook some syscalls and to compile ancient Linux kernels.
>
> I came across tcmode-default.inc[1] where such things are defined:
>
> GCCVERSION ?= "6.1%"
> SDKGCCVERSION ?= "${GCCVERSION}"
> BINUVERSION ?= "2.26%"
> GDBVERSION ?= "7.11%"
> GLIBCVERSION ?= "2.24"
> UCLIBCVERSION ?= "1.0%"
> LINUXLIBCVERSION ?= "4.4"
>
> Would hacking/duplicating and hacking this be a good starting point?
>

Absolutely - if you provide your own gcc/binutils/etc recipes then these
are the variables to change to use them.  It's not unusual for oe-core to
ship with more than one GCC version for example.

Ross
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