building on os x

building on os x

[Belisko Marek]

Hi,

I did check internet before asking but there is not much reference. So
sorry for stupid question but it is possible to build e.g.
core-image-minimal on os x natively? I read something about
meta-darwin but I'm not sure if it's what I'm looking for ( IIRC it's
for creating SDK for osx). Anybody tried that? Many thanks.

BR,

marek

-- 
as simple and primitive as possible
-------------------------------------------------
Marek Belisko - OPEN-NANDRA
Freelance Developer

Ruska Nova Ves 219 | Presov, 08005 Slovak Republic
Tel: +421 915 052 184
skype: marekwhite
twitter: #opennandra
web: http://open-nandra.com

Re: building on os x

[Burton, Ross]

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On 21 December 2015 at 09:43, Belisko Marek <marek.belisko@gmail.com> wrote:

> I did check internet before asking but there is not much reference. So
> sorry for stupid question but it is possible to build e.g.
> core-image-minimal on os x natively? I read something about
> meta-darwin but I'm not sure if it's what I'm looking for ( IIRC it's
> for creating SDK for osx). Anybody tried that? Many thanks.
>

I've patches to make bitbake work (there's a few linuxisms here and there)
but the biggest problem is that OSX doesn't use GCC and various recipes
fail to build properly.  It's a whole lot easier to use a Linux VM, you can
even do a minimal (non-graphical) install and SSH into it.

Ross

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Re: building on os x

[Jozef Maslik]

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Hi,

my experience is almost same - faster and more comfortable way was use VM with minimal ubuntu installation (server version without GUI).

Anyway, are there any activities or plans to fix and support osx?

Regards,
Jozef


> On 21 Dec 2015, at 11:51, Burton, Ross <ross.burton@intel.com> wrote:
> 
> 
> On 21 December 2015 at 09:43, Belisko Marek <marek.belisko@gmail.com <mailto:marek.belisko@gmail.com>> wrote:
> I did check internet before asking but there is not much reference. So
> sorry for stupid question but it is possible to build e.g.
> core-image-minimal on os x natively? I read something about
> meta-darwin but I'm not sure if it's what I'm looking for ( IIRC it's
> for creating SDK for osx). Anybody tried that? Many thanks.
> 
> I've patches to make bitbake work (there's a few linuxisms here and there) but the biggest problem is that OSX doesn't use GCC and various recipes fail to build properly.  It's a whole lot easier to use a Linux VM, you can even do a minimal (non-graphical) install and SSH into it.
> 
> Ross
> -- 
> _______________________________________________
> yocto mailing list
> yocto@yoctoproject.org
> https://lists.yoctoproject.org/listinfo/yocto


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Re: building on os x

[Burton, Ross]

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On 21 December 2015 at 11:09, Jozef Maslik <maslo@binarylemon.com> wrote:

> Anyway, are there any activities or plans to fix and support osx?
>

Well with El Capitan's improved security apparently crippling LD_PRELOAD
(so I hear, unverified currently), Pseudo won't work, which means an
alternative will need to be researched and implemented.  We really
recommend using a VM.  For what it's worth OSX supports hypervisors so
something like https://github.com/mist64/xhyve is free and should be very
efficient.

Ross

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Re: building on os x

[Belisko Marek]

On Mon, Dec 21, 2015 at 12:24 PM, Burton, Ross <ross.burton@intel.com> wrote:
>
> On 21 December 2015 at 11:09, Jozef Maslik <maslo@binarylemon.com> wrote:
>>
>> Anyway, are there any activities or plans to fix and support osx?
>
>
> Well with El Capitan's improved security apparently crippling LD_PRELOAD (so
> I hear, unverified currently), Pseudo won't work, which means an alternative
> will need to be researched and implemented.  We really recommend using a VM.
> For what it's worth OSX supports hypervisors so something like
> https://github.com/mist64/xhyve is free and should be very efficient.
Ah great. Thanks for all valuable infos.
>
> Ross

BR,

marek


-- 
as simple and primitive as possible
-------------------------------------------------
Marek Belisko - OPEN-NANDRA
Freelance Developer

Ruska Nova Ves 219 | Presov, 08005 Slovak Republic
Tel: +421 915 052 184
skype: marekwhite
twitter: #opennandra
web: http://open-nandra.com

Re: building on os x

[Clemens Lang]

On Mon, Dec 21, 2015 at 11:24:52AM +0000, Burton, Ross wrote:
> Well with El Capitan's improved security apparently crippling
> LD_PRELOAD (so I hear, unverified currently), Pseudo won't work, which
> means an alternative will need to be researched and implemented.

El Capitan has "System Integrity Protection", which is a flag on certain
files that now no longer can be changed, even with root privileges.
Pretty much all binaries in /usr/bin and /bin have this flag set, so it
does affect common things like the shell and compilers. The kernel
strips any variables affecting the loader (including
DYLD_INSERT_LIBRARIES, OS X' equivalent to LD_PRELOAD) when executables
with the SIP flag are started. So yes, this effectively kills library
preloading on OS X for anything but your own binaries.

I implemented a workaround in MacPorts, where we also use library
preloading for sanity checks that works by copying affected executables
(thus stripping the flag) and then running the copy instead. Of course,
this requires hooking execve(2) and posix_spawn(2), which I don't think
pseudo does at the moment.

The commit doing most of the grunt work is at
  http://trac.macports.org/changeset/141420
if somebody wants to give this a shot.


HTH,
Clemens
-- 
Clemens Lang • Development Specialist
BMW Car IT GmbH • Lise-Meitner-Str. 14 • 89081 Ulm • http://bmw-carit.com
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