Re: [Xen-devel] [PATCH 07 of 16 RFC] blktap3: Introduce blktap3 top-level Makefile

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Wed, 2012-10-24 at 18:02 +0100, Thanos Makatos wrote:
> diff -r 5a0b0e799ae8 -r 17eea5a9a20c tools/blktap3/Makefile
> --- /dev/null Thu Jan 01 00:00:00 1970 +0000
> +++ b/tools/blktap3/Makefile  Wed Oct 24 17:25:32 2012 +0100
> @@ -0,0 +1,12 @@
> +XEN_ROOT := $(CURDIR)/../../
> +include $(XEN_ROOT)/tools/Rules.mk
> +
> +all: build
> +
> +build: ;

What does the ";" in this syntax do?

> +
> +clean: ;
> +
> +install: ;
> +
> +.PHONY: all build clean install
> 
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