[Mesa-dev] switching off -O2 with debugging build

[Brian Paul]

On 12/07/2012 03:26 PM, Matt Turner wrote:
> On Fri, Dec 7, 2012 at 2:11 PM, Brian Paul<brianp at vmware.com>  wrote:
>> On 12/07/2012 10:40 AM, Chad Versace wrote:
>>>
>>> On 12/07/2012 01:29 PM, Dmitry at freedesktop.org wrote:
>>>>
>>>> ./configure --enable-debug seems to leave -O2 omptimization flag
>>>> turned on.
>>>>
>>>> Is there a quick method to switch it off?
>>>
>>>
>>> During the ./configure&&   make&&   make install process, I set
>>>
>>> export CFLAGS="-O0 -g3"
>>> export CXXFLAGS="-O0 -g3"
>>>
>>> The last thing that the configure script prints is a summary,
>>> which contains the value of CFLAGS and CXXFLAGS among much else. To verify
>>> that this works for you, examine the summary.
>>
>>
>> I've mentioned this before, but it would be nice if specifying
>> --enabled-debug also turned off -O2.
>>
>> -Brian
>
> We could do something like what I did for GLU:
>
> http://cgit.freedesktop.org/mesa/glu/commit/?id=f98fdc4d8a77497d1921e3dc26cab0e28abb92fc
>
> i.e., just appending -g -O0 to CFLAGS and overriding previous -O* flags.

Sounds good.  CXXFLAGS too.

-Brian