[Buildroot] [PATCH v3] package/mender: new package

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

Hello,

On Fri,  4 May 2018 11:21:59 +0200, Angelo Compagnucci wrote:
> From: Angelo Compagnucci <angelo.compagnucci@gmail.com>
> 
> This patch add mender, an open source over-the-air (OTA) software
> updater for embedded Linux devices.
> 
> Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>

I went ahead and applied this to master, but after doing some changes.
I was a bit surprised by one of the changes I had to do though, because
it clearly outlined that the package was not properly tested. See below
for details.

>  package/Config.in                        |  1 +
>  package/mender/Config.in                 | 13 ++++++++
>  package/mender/mender-device-identity    | 52 ++++++++++++++++++++++++++++++++
>  package/mender/mender-inventory-hostinfo | 21 +++++++++++++
>  package/mender/mender-inventory-network  | 47 +++++++++++++++++++++++++++++
>  package/mender/mender.conf               | 14 +++++++++
>  package/mender/mender.hash               |  2 ++
>  package/mender/mender.mk                 | 34 +++++++++++++++++++++
>  package/mender/mender.service            | 15 +++++++++
>  package/mender/server.crt                | 22 ++++++++++++++
>  package/mender/tenant.conf               |  0
>  11 files changed, 221 insertions(+)

An entry in the DEVELOPERS file was missing, so I've added it.

> diff --git a/package/mender/Config.in b/package/mender/Config.in
> new file mode 100644
> index 0000000..183930d
> --- /dev/null
> +++ b/package/mender/Config.in
> @@ -0,0 +1,13 @@
> +config BR2_PACKAGE_MENDER
> +	bool "mender"
> +	depends on BR2_PACKAGE_HOST_GO_ARCH_SUPPORTS
> +	depends on BR2_PACKAGE_HOST_GO_CGO_LINKING_SUPPORTS
> +	depends on BR2_TOOLCHAIN_HAS_THREADS

This dependency was lacking the corresponding Config.in comment, so
I've added it.

> +	depends on BR2_INIT_SYSTEMD

Since systemd is not a build dependency nor even a runtime dependency,
I've dropped this dependency.

> diff --git a/package/mender/mender.mk b/package/mender/mender.mk
> new file mode 100644
> index 0000000..6a4c995
> --- /dev/null
> +++ b/package/mender/mender.mk
> @@ -0,0 +1,34 @@
> +################################################################################
> +#
> +# mender
> +#
> +################################################################################
> +
> +MENDER_VERSION = 1.4.0
> +MENDER_SOURCE = mender-$(MENDER_VERSION).tar.gz
> +MENDER_SITE = $(call github,mendersoftware,mender,$(MENDER_VERSION))
> +
> +define MENDER_INSTALL_TARGET_CMDS
> +	$(INSTALL) -D -m 0644 package/mender/mender.conf \
> +		$(TARGET_DIR)/etc/mender/mender.conf
> +	$(INSTALL) -D -m 0644 package/mender/tenant.conf \
> +		$(TARGET_DIR)/etc/mender/tenant.conf
> +	$(INSTALL) -D -m 0644 package/mender/server.crt \
> +		$(TARGET_DIR)/etc/mender/server.crt
> +	$(INSTALL) -D -m 0755 package/mender/mender-device-identity \
> +		$(TARGET_DIR)/var/share/mender/identity/mender-device-identity
> +	$(INSTALL) -D -m 0755 package/mender/mender-inventory-network \
> +		$(TARGET_DIR)/var/share/mender/inventory/mender-inventory-network
> +	$(INSTALL) -D -m 0755 package/mender/mender-inventory-hostinfo \
> +		$(TARGET_DIR)/var/share/mender/inventory/mender-inventory-hostinfo
> +endef

Because you override the install target commands here, the mender
binary is not installed at all to the target! I'm not sure how you
tested this, as it obviously doesn't work: usr/bin/mender is not
installed to the target.

I've fixed this by using a post install hook instead, so that the
default target installation logic of golang-package is preserved.

Thanks for this contribution! I'm looking forward to seeing the
additional patches from Dan to integrate Mender in a non-systemd
configuration.

Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com