[Buildroot] [PATCH] package/rauc: fix host build with systemd

[Thomas Petazzoni <thomas.petazzoni@bootlin.com>]

On Fri, 13 Nov 2020 13:26:05 +0100
Bartosz Bilas <b.bilas@grinn-global.com> wrote:

> For some reason, autotools pkg infra doesn't pass
> DESTDIR variable to the host make env which causes
> errors during the package install step because it
> tries to install files into its own system
> instead of host directory.
> 
> That fixes the following errors:
>   /usr/bin/install -c -m 644 data/rauc.service '/usr/lib/systemd/system'
>   /usr/bin/install: cannot create regular file '/usr/lib/systemd/system/rauc.service': Permission denied
>   /usr/bin/install -c -m 644 data/de.pengutronix.rauc.conf 'no'
>   make[4]: *** [Makefile:1700: install-nodist_systemdunitDATA] Error 1
>   make[4]: *** Waiting for unfinished jobs....
> 
> Signed-off-by: Bartosz Bilas <b.bilas@grinn-global.com>
> ---
>  package/rauc/rauc.mk | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/package/rauc/rauc.mk b/package/rauc/rauc.mk
> index 61c50ab316..3cd1c85ee7 100644
> --- a/package/rauc/rauc.mk
> +++ b/package/rauc/rauc.mk
> @@ -36,6 +36,10 @@ define RAUC_INSTALL_INIT_SYSTEMD
>  		>$(TARGET_DIR)/usr/lib/systemd/system/rauc.service.d/buildroot-enable.conf  
>  endef
>  
> +HOST_RAUC_MAKE_ENV = \
> +	$(HOST_MAKE_ENV) \
> +	DESTDIR=$(STAGING_DIR)

A DESTDIR of $(STAGING_DIR) when building host-rauc doesn't seem
correct. It's an autotools package, so we're passing
--prefix=$(HOST_DIR) when building host-rauc. If that's not sufficient,
then the rauc Makefile.am should be fixed.

Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com