[Olsr-dev] compile error on native ARMv7 / Ubuntu15.04

[Henning Rogge]

On Mon, Nov 9, 2015 at 2:25 PM, Bastian Bittorf <(spam-protected)> wrote:
> * Henning Rogge <(spam-protected)> [09.11.2015 13:54]:
>> > (so only add it when NOT crosscompiling)
>>
>> This would be just a crude hack...
>>
>> on some platforms you will need fPIC... it doesn't matter if you
>> crosscompile for them or not.
>
> hmmm...the problem is at least solved for OpenWrt,
> because there are specific platform optimizations added.
>
>> on others you don't need it, don't want it (or cannot use it?).
>
> you can always use it, but it has performance issues on some arch's.
>
>> Does someone know the size difference between fPIC executables and
>> "normal ones"?
>
> numbers for olsrd 0.9.0.3
>
> ARMv7: (the daemon itself does compile withpout PIC, but not cfgfile_gen.o)
>   987.344 olsrd -> make
> 1.005.288 olsrd -> make EXTRA_CFLAGS=-fPIC
>
> x86_32:
> 1.111.838 olsrd -> make
> 1.146.205 olsrd -> make EXTRA_CFLAGS=-fPIC
>
> so: it adds about 20k-30k unstripped.

That is with debug information, right?

Henning