[Buildroot] [PATCH v2 3/4] package/xenomai: allow to pull git revisions

[Yann E. MORIN <yann.morin.1998@free.fr>]

Jan, All,

On 2019-12-19 09:24 +0100, Jan Kiszka spake thusly:
> From: Jan Kiszka <jan.kiszka@siemens.com>
> 
> Default remains the latest stable release, expressed by
> BR2_PACKAGE_XENOMAI_USE_RELEASE=y and an empty
> BR2_PACKAGE_XENOMAI_VERSION.
> 
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

So I'm coming back to this remaining patch in your series. Sorry it took
so long since last time I worked on the series...

> ---
>  package/xenomai/Config.in  | 23 ++++++++++++++++++++++-
>  package/xenomai/xenomai.mk | 10 +++++++++-
>  2 files changed, 31 insertions(+), 2 deletions(-)
> 
> diff --git a/package/xenomai/Config.in b/package/xenomai/Config.in
> index 0cb0b343de..f42c7c9c69 100644
> --- a/package/xenomai/Config.in
> +++ b/package/xenomai/Config.in
> @@ -41,8 +41,21 @@ config BR2_PACKAGE_XENOMAI
>  
>  if BR2_PACKAGE_XENOMAI
>  
> +choice
> +	prompt "Xenomai origin"
> +	default BR2_PACKAGE_XENOMAI_USE_RELEASE
> +
> +config BR2_PACKAGE_XENOMAI_USE_RELEASE
> +	bool "Release"
> +
> +config BR2_PACKAGE_XENOMAI_USE_GIT
> +	bool "Git"
> +
> +endchoice
> +
>  config BR2_PACKAGE_XENOMAI_VERSION
> -	string "Custom Xenomai version"
> +	string "Xenomai version"
> +	depends on BR2_PACKAGE_XENOMAI_USE_RELEASE
>  	help
>  	  Manually select Xenomai version. If left empty, the default
>  	  version will be used.
> @@ -53,6 +66,14 @@ config BR2_PACKAGE_XENOMAI_VERSION
>  	  BR2_LINUX_KERNEL_EXT_XENOMAI_ADEOS_PATCH, in the Linux
>  	  Kernel -> Linux Kernel Extensions menu.
>  
> +config BR2_PACKAGE_XENOMAI_GIT_REVISION
> +	string "Xenomai Git revision"
> +	depends on BR2_PACKAGE_XENOMAI_USE_GIT
> +	help
> +	  This option allows Buildroot to get a custom revision from
> +	  the Xenomai Git repository. This can be a SHA, a tag, or
> +	  even a branch (floating revision).

So I know that you are (probably, hopefully) mimicking that construct
from other packages, but I don't see why the same symbol can't be used
for both a release version of a git reference; the telling-apart part is
the choice above anyway, so:

    config BR2_PACKAGE_XENOMAI_VERSION
        bool "Xenomai version"
        help
          If downloading a release, leave empty for the default version,
          or specify a valid release version.

          If downloading from git, this can be any commit-ish (e.g.
          a tag, or a hash).

(Note that I explicitly dropped the reference to using a branch name:
that is not supported and should not be doocumented at all.)

>  choice
>  	prompt "Xenomai core"
>  	default BR2_PACKAGE_XENOMAI_MERCURY
> diff --git a/package/xenomai/xenomai.mk b/package/xenomai/xenomai.mk
> index 3813af707d..df7ca69f45 100644
> --- a/package/xenomai/xenomai.mk
> +++ b/package/xenomai/xenomai.mk
> @@ -4,15 +4,23 @@
>  #
>  ################################################################################
>  
> +ifeq ($(BR2_PACKAGE_XENOMAI_USE_GIT),y)
> +XENOMAI_REV = $(call qstrip,$(BR2_PACKAGE_XENOMAI_GIT_REVISION))

We really want that there *is* a variable named _VERSION because it is
used in a lot of places, like naming the build directory. It is also
dumped in the json generated by 'make show-info'.

And with the above comment, this can be rewrittent as:

    XENOMAI_VERSION = $(call qstrip,$(BR2_PACKAGE_XENOMAI_VERSION))
    XENOMAI_SOURCE = xenomai-$(XENOMAI_VERSION).tar.bz2
    ifeq ($(BR2_PACKAGE_XENOMAI_USE_RELEASE),y)
    ifeq ($(XENOMAI_VERSION),)
    XENOMAI_VERSION = 3.0.10
    else
    BR_NO_CHECK_HASH_FOR += $(XENOMAI_SOURCE)
    endif
    XENOMAI_SITE = http://xenomai.org/downloads/xenomai/stable
    else
    XENOMAI_SITE = https://gitlab.denx.de/Xenomai/xenomai/-/archive/$(XENOMAI_VERSION)
    BR_NO_CHECK_HASH_FOR += $(XENOMAI_SOURCE)
    XENOMAI_AUTORECONF = YES
    endif

Note that those are simply-expanded variable; that is, their values are
only final at the moment they are eventualyl expanded, so we can define
XENOMAI_VERSION after XENOMAI_SOURCE, even if the former is used to
define the latter.

Care to give that a spin and resubmit an updated patch, please?

Regards,
Yann E. MORIN.

> +XENOMAI_SITE = https://gitlab.denx.de/Xenomai/xenomai/-/archive/$(XENOMAI_REV)
> +XENOMAI_SOURCE = xenomai-$(XENOMAI_REV).tar.bz2
> +XENOMAI_AUTORECONF = YES
> +BR_NO_CHECK_HASH_FOR += $(XENOMAI_SOURCE)
> +else
>  XENOMAI_VERSION = $(call qstrip,$(BR2_PACKAGE_XENOMAI_VERSION))
>  ifeq ($(XENOMAI_VERSION),)
>  XENOMAI_VERSION = 3.0.10
>  else
>  BR_NO_CHECK_HASH_FOR += $(XENOMAI_SOURCE)
>  endif
> -
>  XENOMAI_SITE = http://xenomai.org/downloads/xenomai/stable
>  XENOMAI_SOURCE = xenomai-$(XENOMAI_VERSION).tar.bz2
> +endif
> +
>  XENOMAI_LICENSE = GPL-2.0+ with exception (headers), LGPL-2.1+ (libraries), GPL-2.0+ (kernel), GFDL-1.2+ (docs), GPL-2.0 (ipipe patch, can driver)
>  # GFDL is not included but refers to gnu.org
>  XENOMAI_LICENSE_FILES = debian/copyright include/COPYING kernel/cobalt/COPYING \
> -- 
> 2.16.4
> 
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