[Buildroot] [PATCH] package/pkg-waf: properly escape HOST_DIR when defining <pkg>_WAF

[Yann E. MORIN]

Thomas, All,

On 2018-09-23 15:38 +0200, Thomas Petazzoni spake thusly:
> When <pkg>_NEEDS_EXTERNAL_WAF is set to YES, <pkg>_WAF is set to
> $(HOST_DIR)/bin/waf within the inner-waf-package macro. This reference
> to $(HOST_DIR) should use $$(HOST_DIR) so that it is properly expanded
> at the time of use, and not at the time of the macro expansion.
> 
> In the current Buildroot, this doesn't cause any visible problem
> because $(HOST_DIR) points to the same directory for all
> packages. However, with per-package host/target directories, this is
> no longer the case. It causes a build issue because it tries to use
> "waf" from the global host directory, which doesn't exist during the
> build.
> 
> This commit fixes the following build issue with per package
> host/target directories:
> 
> /home/test/autobuild/run/instance-2/output/per-package/mpv/host/bin/python2: can't open file '/home/test/autobuild/run/instance-2/output/host/bin/waf': [Errno 2] No such file or directory
> make: *** [/home/test/autobuild/run/instance-2/output/build/mpv-0.27.2/.stamp_configured] Error 2
> 
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>

Acked-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>

Regards,
Yann E. MORIN.

> ---
>  package/pkg-waf.mk | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/package/pkg-waf.mk b/package/pkg-waf.mk
> index e5b606f063..3288dd63a0 100644
> --- a/package/pkg-waf.mk
> +++ b/package/pkg-waf.mk
> @@ -44,7 +44,7 @@ $(2)_NEEDS_EXTERNAL_WAF ?= NO
>  # If the package does not have its own waf, use our own.
>  ifeq ($$($(2)_NEEDS_EXTERNAL_WAF),YES)
>  $(2)_DEPENDENCIES += host-waf
> -$(2)_WAF = $(HOST_DIR)/bin/waf
> +$(2)_WAF = $$(HOST_DIR)/bin/waf
>  else
>  $(2)_WAF = ./waf
>  endif
> -- 
> 2.14.4
> 

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