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

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

Hello,

On Sun, 23 Sep 2018 15:38:17 +0200, Thomas Petazzoni wrote:
> 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@bootlin.com>
> ---
>  package/pkg-waf.mk | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied to master, thanks.

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com