[Buildroot] [PATCH v7 06/18] core: make host *-config scripts relocatable

[Arnout Vandecappelle <arnout@mind.be>]

On 03/09/16 23:58, Samuel Martin wrote:
> This change adjusts the _CONFIG_SCRIPTS hook to set add {exec_,}prefix computed
> relatively to the script location.
>
> This patch only fixes *-config scripts located in the host area, those
> from the target and staging area are already handled.
>
> This hook is a kind of brute-force sed on all files matching '*-config'
> in the $(HOST_DIR)/usr/bin directory. This allows correctly handle
> script whose name may depends on the host system, not the target
> configuration (e.g. ncurses can be configured for the target to be
> ncurses6w, so ncurses6w-config ; whereas for the host it will be
> ncurses5, so ncurses5-config).
> Since there way less host packages than target ones, it is reasonable to
> assume that processing all *-config scripts found when a host package
> (whose target package set the *_CONFIG_SCRIPTS variable) is fairly short
> and does not add its overhead not even noticeable.

  I don't agree with this on the principle that we like to handle things 
explicitly, rather than having some automagic stuff that is hard to pinpoint. So 
I think we should just set the appropriate HOST_*_CONFIG_SCRIPTS variables. To 
alleviate the situation, we could add a ?= in generic-package, so only the cases 
where the host script deviates from the target script (or where there is no 
target package) have to be handled. Probably just ncurses.

  Regards,
  Arnout

>
> Signed-off-by: Samuel Martin <s.martin49@gmail.com>
>
> ---
> changes v6->v7:
> - none
>
> changes v5->v6:
> - new patch
> ---
>   package/pkg-generic.mk | 12 ++++++++++++
>   1 file changed, 12 insertions(+)
>
> diff --git a/package/pkg-generic.mk b/package/pkg-generic.mk
> index ffa21ee..845c8d3 100644
> --- a/package/pkg-generic.mk
> +++ b/package/pkg-generic.mk
> @@ -207,6 +207,18 @@ $(BUILD_DIR)/%/.stamp_host_installed:
>   	$(foreach hook,$($(PKG)_PRE_INSTALL_HOOKS),$(call $(hook))$(sep))
>   	+$($(PKG)_INSTALL_CMDS)
>   	$(foreach hook,$($(PKG)_POST_INSTALL_HOOKS),$(call $(hook))$(sep))
> +	$(Q)if test -n "$($(RAWNAME)_CONFIG_SCRIPTS)" ; then \
> +		$(call MESSAGE,"Fixing package configuration files") ;\
> +			ls $(HOST_DIR)/usr/bin/*-config 2>/dev/null |\
> +			xargs --no-run-if-empty \
> +			$(SED)  "s,$(BASE_DIR), at BASE_DIR@,g" \
> +				-e "s,$(HOST_DIR), at HOST_DIR@,g" \
> +				-e "s,^\(exec_\)\?prefix=.*,\1prefix=\`dirname \$$0\`/../../usr,g" \
> +				-e "s,-I/usr/,-I at HOST_DIR@/usr/,g" \
> +				-e "s,-L/usr/,-L at HOST_DIR@/usr/,g" \
> +				-e "s, at HOST_DIR@,$(HOST_DIR),g" \
> +				-e "s, at BASE_DIR@,$(BASE_DIR),g" ;\
> +	fi
>   	@$(call step_end,install-host)
>   	$(Q)touch $@
>
>


-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium           BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint:  7493 020B C7E3 8618 8DEC 222C 82EB F404 F9AC 0DDF