[OE-core] [PATCH V3 0/2]fix native package compile error with gcc 4.3.4 on x86 host

[Khem Raj]

On Thu, Feb 28, 2013 at 3:06 AM, Burton, Ross <ross.burton at intel.com> wrote:
> On 28 February 2013 07:09, Hongxu Jia <hongxu.jia at windriver.com> wrote:
>> Change from V2: as Khem Raj suggested, use `-march=native' to cause the
>> compiler to auto-detect the architecture of the build computer, if the
>> auto-detect is unsuccessful the option has no effect.
>
> What happens if you're in an environment where you're sharing sstate
> between multiple developers, and the build machine is an i7 but
> another developer's machine is a Core2?    These machines have
> different sets of extensions available

yes I thought about it later on. adding march=i686 when host is 32bit
and march=x86-64 which build host is 64bit in bitbake.conf is probably
one way but I feel its overkill to please an old compiler and for one recipe
so may be you should try to deduce the version of gcc. i think best is to
fix the autoconf on glib-2.0 where you would add a test to find the version
of compiler and inject the needed option to flags


>
> Using the architecture as determined by bitbake seems like a better
> idea (which was V1, right?) as that's embedded in the sstate hash.
>
> Ross
>
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