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Re: [Qemu-devel] [PATCH v2 03/13] build-sys: add a rule to print a varia
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PATCH v2 03/13] build-sys: add a rule to print a variable |
Date: |
Fri, 15 Dec 2017 12:28:41 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 |
On 12/15/2017 09:06 AM, Marc-André Lureau wrote:
> $ make print-CFLAGS
> CFLAGS=-fsanitize=address -Og -g
>
> Trick from various sources:
> https://stackoverflow.com/questions/16467718/how-to-print-out-a-variable-in-makefile
> https://www.cmcrossroads.com/article/printing-value-makefile-variable
>
> Signed-off-by: Marc-André Lureau <address@hidden>
> Reviewed-by: Eric Blake <address@hidden>
> ---
> Makefile | 5 ++++-
> docs/devel/build-system.txt | 13 +++++++++++++
> 2 files changed, 17 insertions(+), 1 deletion(-)
> +++ b/docs/devel/build-system.txt
> @@ -510,3 +510,16 @@ default-configs/$TARGET-NAME file as input.
> This is the entrypoint used when make recurses to build a single system
> or userspace emulator target. It is merely a symlink back to the
> Makefile.target in the top level.
> +
> +
> +Useful make targets
> +===================
> +
> +- help
> +
> + Print a help message for the most common build targets.
Except that this patch forgot to tweak 'make help' to mention 'make
print-VAR' ;)
> +
> +- print-VAR
> +
> + Print the value of the variable VAR. Useful for debugging the build
> + system.
>
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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- [Qemu-devel] [PATCH v2 00/13] Various build-sys and ASAN related fixes, Marc-André Lureau, 2017/12/15
- [Qemu-devel] [PATCH v2 04/13] build-sys: add AddressSanitizer when --enable-debug if possible, Marc-André Lureau, 2017/12/15
- [Qemu-devel] [PATCH v2 06/13] vl: fix direct firmware directories leak, Marc-André Lureau, 2017/12/15
- [Qemu-devel] [PATCH v2 05/13] tests: fix check-qobject leak:, Marc-André Lureau, 2017/12/15
- [Qemu-devel] [PATCH v2 09/13] crypto: fix stack-buffer-overflow error, Marc-André Lureau, 2017/12/15
- [Qemu-devel] [PATCH v2 07/13] readline: add a free function, Marc-André Lureau, 2017/12/15