How to compile without optimizations

[David Rubel]

It worked wonders.

Thanks... and I mean A LOT!

On Thu, Apr 5, 2012 at 12:29 AM, Kuroishi Mitsuo <kuroishi at iij.ad.jp> wrote:

>
>   > Hello.
>  >
>  > Is there a way to compile the ISC DHCP without code optimization?. I
> tried
>  > editing the Makefile created by ./configure, changing in the "CFLAGS"
> line
>  > the "-O2" option to "-O0" or even removing it completely, but then when
> I
>  > Make the output leads me to think that the code it's still being
> optimized.
>  >
>  > For example: the last gcc output is "gcc  -g -O2  -Wall -Werror
>  > -fno-strict-aliasing -I../bind/include   -o dhcpd dhcpd-dhcpd.o......".
>  >
>  > Also, running the dhclient through GDB shows that the values of some
>  > variables/pointers used in a function I created are being optimized
> ("value
>  > optimized out"). I'm getting a Segmentation fault during a malloc to a
>  > pointer (only initialized, pointing to NULL) which value is being
> optimized
>  > before the malloc and I'd like to try if compiling without optimizations
>  > would fix that problem.
>  >
>  > Any help will be greatly appreciated.
>  > Thanks.
>
> Hi.
>
> I did ./configure CFLAGS="-g3 -O0" and it seems to be OK.
>
> Regards,
>
> --
> Kuroishi Mitsuo
>
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