[Buildroot] [PATCH 1/1] Makefile: use order-only dependency so symlinks are made only once

[Yann E. MORIN]

Danomi, All,

On 2020-07-12 21:13 -0400, Danomi Manchego spake thusly:
> The staging symlink is being created on every invocation of "make" as it
> depends on its destination directory, which is modified when the symlink
> is created.  This is prevented by changing the destination directory
> dependency to be order-only.
> 
> Signed-off-by: Danomi Manchego <danomimanchego123 at gmail.com>

I've extended and clarified the comit log, because the wording was a bit
confusing (some would interpret it as "the directory pointed at by the
symlink changes when the symlink is created").

Applied to master, thanks.

Regards,
Yann E. MORIN.

> ---
>  Makefile | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/Makefile b/Makefile
> index 04c29b1c71..a8e0ee02c5 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -457,12 +457,12 @@ endif
>  
>  ifneq ($(HOST_DIR),$(BASE_DIR)/host)
>  HOST_DIR_SYMLINK = $(BASE_DIR)/host
> -$(HOST_DIR_SYMLINK): $(BASE_DIR)
> +$(HOST_DIR_SYMLINK): | $(BASE_DIR)
>  	ln -snf $(HOST_DIR) $(HOST_DIR_SYMLINK)
>  endif
>  
>  STAGING_DIR_SYMLINK = $(BASE_DIR)/staging
> -$(STAGING_DIR_SYMLINK): $(BASE_DIR)
> +$(STAGING_DIR_SYMLINK): | $(BASE_DIR)
>  	ln -snf $(STAGING_DIR) $(STAGING_DIR_SYMLINK)
>  
>  # Quotes are needed for spaces and all in the original PATH content.
> -- 
> 2.17.1
> 
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