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Re: [PATCH 05/10] build: Avoid build failure when building drivers as mo


From: Daniel P . Berrangé
Subject: Re: [PATCH 05/10] build: Avoid build failure when building drivers as modules
Date: Fri, 26 Jun 2020 18:23:00 +0100
User-agent: Mutt/1.14.0 (2020-05-02)

On Fri, Jun 26, 2020 at 06:43:02PM +0200, Christophe de Dinechin wrote:
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> Signed-off-by: Christophe de Dinechin <dinechin@redhat.com>
> ---
>  Makefile.objs    | 1 +
>  Makefile.target  | 7 +++++++
>  hw/Makefile.objs | 1 +
>  3 files changed, 9 insertions(+)
> 
> diff --git a/Makefile.objs b/Makefile.objs
> index e38768c8d5..6703353493 100644
> --- a/Makefile.objs
> +++ b/Makefile.objs
> @@ -86,6 +86,7 @@ endif # CONFIG_SOFTMMU
>  # Target-independent parts used in system and user emulation
>  common-obj-y += cpus-common.o
>  common-obj-y += hw/
> +common-obj-m += hw/
>  common-obj-y += qom/
>  common-obj-y += disas/
>  
> diff --git a/Makefile.target b/Makefile.target
> index 8ed1eba95b..3f3b5ee058 100644
> --- a/Makefile.target
> +++ b/Makefile.target
> @@ -179,6 +179,13 @@ endif # CONFIG_SOFTMMU
>  dummy := $(call unnest-vars,,obj-y)
>  all-obj-y := $(obj-y)
>  
> +#
> +# common-obj-m has some crap here, probably as side effect from
> +# filling obj-y.  Clear it.  Fixes suspicious dependency errors when
> +# building devices as modules.
> +#
> +common-obj-m :=

This comment doesn't fill me with confidence - makes it feel like there's
some more important root cause that needs addressing instead.

>  include $(SRC_PATH)/Makefile.objs
>  dummy := $(call unnest-vars,.., \
>                 authz-obj-y \
> diff --git a/hw/Makefile.objs b/hw/Makefile.objs
> index 4cbe5e4e57..d6d387b74b 100644
> --- a/hw/Makefile.objs
> +++ b/hw/Makefile.objs
> @@ -43,4 +43,5 @@ devices-dirs-y += smbios/
>  endif
>  
>  common-obj-y += $(devices-dirs-y)
> +common-obj-m := display/
>  obj-y += $(devices-dirs-y)
> -- 
> 2.26.2
> 
> 

Regards,
Daniel
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