[Buildroot] [PATCH 2/3] core: allow having a list of "cmake" candidates

[Yann E. MORIN]

Carlos, All,

On 2017-05-05 17:30 -0300, Carlos Santos spake thusly:
> Add the BR2_CMAKE_CANDIDATES variable, containing a list of candidates
> to check and use as BR2_CMAKE, if possible.
> 
> This allows using "cmake3" on CentOS 7, whose default cmake corresponds
> to version 2.8.12. Example:
> 
>     $ make BR2_CMAKE_CANDIDATES="cmake cmake3"
> 
> Signed-off-by: Carlos Santos <casantos at datacom.ind.br>
> ---
>  support/dependencies/check-host-cmake.mk | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)
> 
> diff --git a/support/dependencies/check-host-cmake.mk b/support/dependencies/check-host-cmake.mk
> index 8002278..42aaee4 100644
> --- a/support/dependencies/check-host-cmake.mk
> +++ b/support/dependencies/check-host-cmake.mk
> @@ -10,9 +10,10 @@
>  #
>  BR2_CMAKE_VERSION_MIN = 3.1
>  
> -BR2_CMAKE ?= cmake
> -ifeq ($(call suitable-host-package,cmake,\
> -	$(BR2_CMAKE) $(BR2_CMAKE_VERSION_MIN)),)
> +BR2_CMAKE_CANDIDATES ?= cmake

Do not rename the variable; keep it named BR2_CMAKE.

It was named as such so that one could do:

    $ make BR2_CMAKE=/path/to/my/cmake3

and we want to keep it as such, so people can override the cmake they
want to use.

By the way, I hope you knew you could do that, didn't you? ;-)

Regards,
Yann E. MORIN.

> +BR2_CMAKE ?= $(call suitable-host-package,cmake,\
> +	$(BR2_CMAKE_CANDIDATES) $(BR2_CMAKE_VERSION_MIN))
> +ifeq ($(BR2_CMAKE),)
>  BR2_CMAKE = $(HOST_DIR)/usr/bin/cmake
>  BR2_CMAKE_HOST_DEPENDENCY = host-cmake
>  endif
> -- 
> 1.8.3.1
> 
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