[Buildroot] [PATCH 1/2] support/testing: update the ARM toolchain used for the systemd init tests

[Yann E. MORIN]

Romain, All,

On 2020-04-05 00:02 +0200, Romain Naour spake thusly:
> As reported on the mailing list, there is a build issue with systemd 245
> when using gcc < 5.0:
> 
> http://lists.busybox.net/pipermail/buildroot/2020-April/278931.html
> 
> Update to the Bootling toolchain 2017.05 that meet the minimum requered
> version of toolchain componant:
> GCC           5.4.0
> linux-headers 3.10.105
> 
> See:
> https://toolchains.bootlin.com/downloads/releases/toolchains/armv5-eabi/readmes/armv5-eabi--glibc--stable-2017.05-toolchains-1-1.txt
> 
> Tested:
> https://gitlab.com/kubu93/buildroot/pipelines/132890602
> 
> Fixes:
> https://gitlab.com/buildroot.org/buildroot/-/jobs/498144403
> https://gitlab.com/buildroot.org/buildroot/-/jobs/498144405
> https://gitlab.com/buildroot.org/buildroot/-/jobs/498144406
> https://gitlab.com/buildroot.org/buildroot/-/jobs/498144408
> https://gitlab.com/buildroot.org/buildroot/-/jobs/498144410
> https://gitlab.com/buildroot.org/buildroot/-/jobs/498144412
> 
> Signed-off-by: Romain Naour <romain.naour at gmail.com>
> ---
>  support/testing/tests/init/test_systemd.py | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/support/testing/tests/init/test_systemd.py b/support/testing/tests/init/test_systemd.py
> index 0ac18cb623..10634cbb1f 100644
> --- a/support/testing/tests/init/test_systemd.py
> +++ b/support/testing/tests/init/test_systemd.py
> @@ -2,11 +2,24 @@ import infra.basetest
>  from tests.init.base import InitSystemBase as InitSystemBase
>  
>  
> +# External Toolchain fragment imported from:
> +# https://toolchains.bootlin.com/downloads/releases/toolchains/armv5-eabi/fragments/armv5-eabi--glibc--stable-2017.05-toolchains-1-1.frag
>  class InitSystemSystemdBase(InitSystemBase):
>      config = \
>          """
>          BR2_arm=y
> +        BR2_arm926t=y
> +        BR2_ARM_CPU_ARMV5=y
> +        BR2_ARM_EABI=y
> +        BR2_ARM_SOFT_FLOAT=y

Those last four options are useless, as they are the default for
BR2_arm.

>          BR2_TOOLCHAIN_EXTERNAL=y
> +        BR2_TOOLCHAIN_EXTERNAL_CUSTOM=y
> +        BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD=y
> +        BR2_TOOLCHAIN_EXTERNAL_URL="http://toolchains.bootlin.com/downloads/releases/toolchains/armv5-eabi--glibc--stable-2017.05-toolchains-1-1.tar.bz2"

I'd rather we use one of the known pre-built toolchains that is
available from the menuconfig. Unfortiunately, for armv5, we have no
better than the codesourcery one. But for armv7, we have a darn-recent
toolchain from ARM.

So I think we just need to add BR2_cortex_a7 to this defconfig:

    diff --git a/support/testing/tests/init/test_systemd.py b/support/testing/tests/init/test_systemd.py
    index 0ac18cb623..d679081768 100644
    --- a/support/testing/tests/init/test_systemd.py
    +++ b/support/testing/tests/init/test_systemd.py
    @@ -6,6 +6,7 @@ class InitSystemSystemdBase(InitSystemBase):
         config = \
             """
             BR2_arm=y
    +        BR2_cortex_a7=y
             BR2_TOOLCHAIN_EXTERNAL=y
             BR2_INIT_SYSTEMD=y
             BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"

Note that I am not saying the bootlin toolchains are bad. I am instead
saying that we should test with what is readily available in menuconfig,
so that we know users can have a working starting point.

Runtime tests are not (IMHO) about testing corner cases, but to ensure
that the packages do build and run as expected in standard conditions.

Bootlin toolchains are not in the menuconfig, while the ARM toolchain
is, and that is what users will use 99.99% of the time. Hence we should
test with that.

Regards,
Yann E. MORIN.

> +        BR2_TOOLCHAIN_EXTERNAL_GCC_5=y
> +        BR2_TOOLCHAIN_EXTERNAL_HEADERS_3_10=y
> +        BR2_TOOLCHAIN_EXTERNAL_HAS_SSP=y
> +        BR2_TOOLCHAIN_EXTERNAL_CUSTOM_GLIBC=y
>          BR2_INIT_SYSTEMD=y
>          BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
>          BR2_LINUX_KERNEL=y
> -- 
> 2.25.1
> 
> _______________________________________________
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> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot

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