[CRIU] [PATCH 1/2] build/nmk: define map and newline

[Cyrill Gorcunov]

On Fri, Feb 19, 2016 at 04:02:50PM +0300, Dmitry Safonov wrote:
> map is very good at generating rules.
> Just map gen function to array of it's parameters.
> Don't forget to eval the result.
> 
> I'll use it in feature-tests generation and in someday coming
> compat 32-bit mode - in x86 makefiles.
> 
> Cc: Cyrill Gorcunov <gorcunov at openvz.org>
> Signed-off-by: Dmitry Safonov <dsafonov at virtuozzo.com>
> ---
>  scripts/nmk/scripts/msg.mk | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/scripts/nmk/scripts/msg.mk b/scripts/nmk/scripts/msg.mk
> index a0279d0..88cc774 100644
> --- a/scripts/nmk/scripts/msg.mk
> +++ b/scripts/nmk/scripts/msg.mk
> @@ -42,6 +42,17 @@ define msg-build
>          $(E) "  BUILD   " $(1)
>  endef
>  
> +define \n
> +
> +
> +endef

Escaped symbols are definitely a way to get some problems :)
Just call it "newline"

define newline


endef

map = $(foreach x,$2,$(call $1,$x)$(newline))

(I really tempting to call it well known mapcar,
 but this won't work :)