[Buildroot] flannel riscv64 build failure

[Buildroot] flannel riscv64 build failure

[Geoff Levand]

On 5/20/24 13:06, Thomas Petazzoni wrote:
> Hello,
> 
> Autobuilder failures
> ====================
> 
> Below is a list of build failures reported by the Buildroot autobuilders
> in relation to packages or CPU architectures you are in charge of.
> Please help us improving the quality of Buildroot by investigating those
> build failures and sending patches to fix them.
> 
> Results for the 'master' branch
> -------------------------------
> 
> Build failures related to your packages:
> 
>     arch     |             reason             |                                       url                                      
> -------------+--------------------------------+---------------------------------------------------------------------------------
>   riscv64    |         flannel-0.25.1         | http://autobuild.buildroot.net/results/d2be77d8b9236db45c4f3a558f3198f199c0c568

Hi,

I posted about the riscv64 build failure to the flannel project, and one developer said
it might be due to buildroot setting CGO_ENABLED=1 for the riscv64 build.  
The report is here:

  https://github.com/flannel-io/flannel/issues/1988

I'm not sure if setting CGO_ENABLED=0 just for the flannel build will solve the problem,
nor do I how to do that.  Any help will be appreciated.

-Geoff
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Re: [Buildroot] flannel riscv64 build failure

[Yann E. MORIN]

Geoff, All,

On 2024-06-02 16:28 +0900, Geoff Levand spake thusly:
> On 5/20/24 13:06, Thomas Petazzoni wrote:
> >   riscv64    |         flannel-0.25.1         | http://autobuild.buildroot.net/results/d2be77d8b9236db45c4f3a558f3198f199c0c568
> I posted about the riscv64 build failure to the flannel project, and one developer said
> it might be due to buildroot setting CGO_ENABLED=1 for the riscv64 build.  
> The report is here:
>   https://github.com/flannel-io/flannel/issues/1988
> 
> I'm not sure if setting CGO_ENABLED=0 just for the flannel build will solve the problem,
> nor do I how to do that.  Any help will be appreciated.

You may want to test something along the lines of:

    diff --git a/package/flannel/flannel.mk b/package/flannel/flannel.mk
    index 317ad14ba3..4279c5bb99 100644
    --- a/package/flannel/flannel.mk
    +++ b/package/flannel/flannel.mk
    @@ -12,6 +12,14 @@ FLANNEL_LICENSE_FILES = LICENSE

     FLANNEL_LDFLAGS = -X github.com/flannel-io/flannel/version.Version=$(FLANNEL_VERSION)

    +# Upstream only supports CGO on x86_64 (aka amd64):
    +#   https://github.com/flannel-io/flannel/issues/1988#issuecomment-2141483747
    +#   https://github.com/flannel-io/flannel/blob/v0.25.1/Makefile#L11
    +# So force it disabled for anything but x86_64, where we keep the default
    +ifeq ($(BR2_x86_64),)
    +FLANNEL_GO_ENV += CGO_ENABLED=0
    +endif
    +
     # Install flannel to its well known location.
     define FLANNEL_INSTALL_TARGET_CMDS
     	$(INSTALL) -D -m 0755 $(@D)/bin/flannel $(TARGET_DIR)/opt/bin/flanneld

Regards,
Yann E. MORIN.

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