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Date: Mon, 22 Jun 2015 08:44:41 +0100
From: "Gonzalez Monroy, Sergio" <sergio.gonzalez.monroy@intel.com>
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To: Cyril Chemparathy <cchemparathy@ezchip.com>, dev@dpdk.org
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Subject: Re: [dpdk-dev] [PATCH] mk: add support for gdb debug info generation
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On 19/06/2015 22:29, Cyril Chemparathy wrote:
> From: Cyril Chemparathy <cchemparathy@tilera.com>
>
> It is often useful to build with debug enabled, we add a config
> (CONFIG_RTE_TOOLCHAIN_DEBUG) to do so.
>
> Note: This patch does not include corresponding changes for ICC.  The
> author pleads abject ignorance in this regard, and welcomes
> recommendations. :-)
>
> Change-Id: I499e591e1b7d71df751fd40d1fdcbe6975eeeb27
> Signed-off-by: Cyril Chemparathy <cchemparathy@ezchip.com>
> ---
>   mk/toolchain/gcc/rte.vars.mk | 5 +++++
>   1 file changed, 5 insertions(+)
>
> diff --git a/mk/toolchain/gcc/rte.vars.mk b/mk/toolchain/gcc/rte.vars.mk
> index 0f51c66..22c4c1f 100644
> --- a/mk/toolchain/gcc/rte.vars.mk
> +++ b/mk/toolchain/gcc/rte.vars.mk
> @@ -71,6 +71,11 @@ ifeq (,$(findstring -O0,$(EXTRA_CFLAGS)))
>   endif
>   endif
>   
> +ifeq ($(CONFIG_RTE_TOOLCHAIN_DEBUG),y)
> +TOOLCHAIN_CFLAGS += -g -ggdb
> +TOOLCHAIN_LDFLAGS += -g -ggdb
> +endif
> +
>   WERROR_FLAGS := -W -Wall -Werror -Wstrict-prototypes -Wmissing-prototypes
>   WERROR_FLAGS += -Wmissing-declarations -Wold-style-definition -Wpointer-arith
>   WERROR_FLAGS += -Wcast-align -Wnested-externs -Wcast-qual
I don't think you need to modify the makefiles and introduce a new 
compile time option for this.
The same result can be easily achieved by setting EXTRA_CFLAGS in the 
command line. ie:
     $ make install T=x86_64-native-linuxapp-gcc EXTRA_CFLAGS='-g -ggdb'

Sergio