netdev - Re: [PATCH iproute2] Enable use of extra debugging information

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Date:	Wed, 22 Jun 2016 10:36:39 +0200
From:	Jakub Sitnicki <jkbs@...hat.com>
To:	David Ahern <dsa@...ulusnetworks.com>
Cc:	netdev@...r.kernel.org, stephen@...workplumber.org
Subject: Re: [PATCH iproute2] Enable use of extra debugging information

Hi David,

On Wed, Jun 22, 2016 at 01:27 AM CEST, David Ahern <dsa@...ulusnetworks.com> wrote:
> Add -g flag to builds if DEBUG parameter is set. Improves
> debugging with gdb.
>
> Signed-off-by: David Ahern <dsa@...ulusnetworks.com>
> ---
>  Makefile | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/Makefile b/Makefile
> index 15c81ecfdca3..8e006759079d 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -39,7 +39,11 @@ HOSTCC = gcc
>  DEFINES += -D_GNU_SOURCE
>  # Turn on transparent support for LFS
>  DEFINES += -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE
> +ifdef DEBUG
> +CCOPTS = -g
> +else
>  CCOPTS = -O2
> +endif
>  WFLAGS := -Wall -Wstrict-prototypes  -Wmissing-prototypes
>  WFLAGS += -Wmissing-declarations -Wold-style-definition -Wformat=2

This implies a change of optimization level to -O0 when building with
DEBUG set, doesn't it? Was it intentional?

Perhaps it would be less surprising to explicitly set -O0, if that was
your intention. Just a thought.

Thanks,
Jakub