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Re: [Qemu-devel] [RFC PATCH] build-sys: add make 'help' target
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [RFC PATCH] build-sys: add make 'help' target |
Date: |
Thu, 18 Aug 2016 11:21:50 +0100 |
On 20 June 2016 at 16:19, <address@hidden> wrote:
> From: Marc-André Lureau <address@hidden>
>
> Add a make 'help', to print a summary of the main Makefile targets.
> The format is loosely inspired by Linux make 'help' output.
>
> Signed-off-by: Marc-André Lureau <address@hidden>
> ---
> Makefile | 33 +++++++++++++++++++++++++++++++++
> 1 file changed, 33 insertions(+)
>
> diff --git a/Makefile b/Makefile
> index 53e4119..c6bf3d6 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -666,3 +666,36 @@ endif
> -include $(wildcard *.d tests/*.d)
>
> include $(SRC_PATH)/tests/docker/Makefile.include
> +
> +.PHONY: help
> +help:
> +
> + @echo 'Cleaning targets:'
> + @echo ' clean - Remove most generated files but keep the
> config'
> + @echo ' distclean - Remove all generated files'
> + @echo ' dist - Build a distributable tarball'
There's a cute trick which will let us put these help strings
next to the actual makefile targets, which might make it easier
for us to remember to update and add them: you have a rune
something like
help: ## Show this help.
@fgrep -h "##" $(MAKEFILE_LIST) | fgrep -v fgrep | sed -e 's/\\$$//' |
sed -e 's/##//'
and then you can annotate all your targets with their doc strings:
check: ## Run all tests
Idea from https://gist.github.com/prwhite/8168133
We'd need to elaborate it somewhat to add categories, but you get the
general idea.
Does this seem useful, or like overkill ?
thanks
-- PMM