Building a universal binary on OS X?

Building a universal binary on OS X?

[Alan Schmitt]

[-- Attachment #1: Type: text/plain, Size: 244 bytes --]

Hello,

Is this (http://alan.petitepomme.net/cwn/2007.09.18.html#1) the  
recommended way to build a universal binary on OS X? (To summarize:  
use a PPC version of ocamlopt and use lipo to glue the binaries  
together.)

Thanks,

Alan Schmitt

[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 186 bytes --]

Re: [Caml-list] Building a universal binary on OS X?

[Alan Schmitt]

[-- Attachment #1.1: Type: text/plain, Size: 1418 bytes --]

On 19 mai 08, at 15:07, Alan Schmitt wrote:

> Hello,
>
> Is this (http://alan.petitepomme.net/cwn/2007.09.18.html#1) the  
> recommended way to build a universal binary on OS X? (To summarize:  
> use a PPC version of ocamlopt and use lipo to glue the binaries  
> together.)

I've realized I may not have given enough details as to what I want to  
do here, so here they are.

My goal is to be able to compile the OS GUI version of Unison on a  
single machine. Right now, using my intel-based notebook, I'm able to  
compile a version that runs both on 10.4 and 10.5, but only on intel.

(By the way, compiling ocaml to manage this was not obvious. Here is  
how to do it using godi, thanks to Gerd Stolpmann:
- net the following in godi.conf
OCAML_CONF_ARGS=-cc "gcc -mmacosx-version-min=10.4"
- rebuild godi-ocaml-src and godi-ocaml
Then I can specify in Xcode that I'm targetting 10.4 as my minimum  
version, and I don't get any error when linking against the ocaml  
libraries.)

The next step is to be able to build Universal Binaries versions of  
the ocaml libraries, so that I can tell Xcode to target both  
architectures. This implies that ocaml should be able to cross-compile  
to PPC, which I don't know if it can do.

I think I remember an old message addressing this, but I have not been  
able to find it.

If anyone could point me to the right direction, it would be very  
helpful.

Thanks,

Alan

[-- Attachment #1.2: Type: text/html, Size: 1892 bytes --]

[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 186 bytes --]

Re: Building a universal binary on OS X?

[Michel Schinz]

Alan Schmitt <alan.schmitt@polytechnique.org> writes:

[...]

> My goal is to be able to compile the OS GUI version of Unison on a
> single machine. Right now, using my intel-based notebook, I'm able to
> compile a version that runs both on 10.4 and 10.5, but only on intel.

[...]

> I think I remember an old message addressing this, but I have not been
> able to find it.

You might be referring to this message:

http://thread.gmane.org/gmane.comp.lang.caml.general/38930

The cute trick consists in building a PPC version of OCaml on a PPC
machine, and then copying it over to your Intel machine. It will run
fine (albeit slowly) under Rosetta, and generate PPC executables.

Michel.

Re: [Caml-list] Re: Building a universal binary on OS X?

[Alan Schmitt]

[-- Attachment #1.1: Type: text/plain, Size: 993 bytes --]

On 24 mai 08, at 09:31, Michel Schinz wrote:

>> My goal is to be able to compile the OS GUI version of Unison on a
>> single machine. Right now, using my intel-based notebook, I'm able to
>> compile a version that runs both on 10.4 and 10.5, but only on intel.
>
> [...]
>
>> I think I remember an old message addressing this, but I have not  
>> been
>> able to find it.
>
> You might be referring to this message:
>
> http://thread.gmane.org/gmane.comp.lang.caml.general/38930
>
> The cute trick consists in building a PPC version of OCaml on a PPC
> machine, and then copying it over to your Intel machine. It will run
> fine (albeit slowly) under Rosetta, and generate PPC executables.

Ah, thank you, this seems to be it. Just one small additional question  
about this: where should I put the supporting libraries (the ocaml  
directory with libunix.a for instance), and how can I make sure the  
ppc version of ocamlopt find these libraries, and not the i386 ones?

Thanks again,

Alan

[-- Attachment #1.2: Type: text/html, Size: 1536 bytes --]

[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 186 bytes --]

Re: [Caml-list] Re: Building a universal binary on OS X?

[Andres Varon]

On May 24, 2008, at 3:31 AM, Michel Schinz wrote:

> Alan Schmitt <alan.schmitt@polytechnique.org> writes:
>
> [...]
>
>> My goal is to be able to compile the OS GUI version of Unison on a
>> single machine. Right now, using my intel-based notebook, I'm able to
>> compile a version that runs both on 10.4 and 10.5, but only on intel.
>
> [...]
>
>> I think I remember an old message addressing this, but I have not  
>> been
>> able to find it.
>
> You might be referring to this message:
>
> http://thread.gmane.org/gmane.comp.lang.caml.general/38930
>
> The cute trick consists in building a PPC version of OCaml on a PPC
> machine, and then copying it over to your Intel machine. It will run
> fine (albeit slowly) under Rosetta, and generate PPC executables.

Actually you can cross compile it in your intel mac, this is what I  
use to configure it:

./configure -cc "gcc -mmacosx-version-min=10.4 -arch ppc -isysroot / 
Developer/SDKs/MacOSX10.4u.sdk" -prefix /opt/ocaml/3.10.2/tiger/ppc - 
host powerpc-apple-darwin8.11.0

Then use the standard make world; make opt;  ....

Andres

>
>
> Michel.
>
> _______________________________________________
> Caml-list mailing list. Subscription management:
> http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list
> Archives: http://caml.inria.fr
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
> Bug reports: http://caml.inria.fr/bin/caml-bugs

Re: [Caml-list] Re: Building a universal binary on OS X?

[Nathaniel Gray]

On Sat, May 24, 2008 at 12:31 AM, Michel Schinz <Michel.Schinz@epfl.ch> wrote:
> Alan Schmitt <alan.schmitt@polytechnique.org> writes:
>
> [...]
>
>> My goal is to be able to compile the OS GUI version of Unison on a
>> single machine. Right now, using my intel-based notebook, I'm able to
>> compile a version that runs both on 10.4 and 10.5, but only on intel.
>
> [...]
>
>> I think I remember an old message addressing this, but I have not been
>> able to find it.
>
> You might be referring to this message:
>
> http://thread.gmane.org/gmane.comp.lang.caml.general/38930
>
> The cute trick consists in building a PPC version of OCaml on a PPC
> machine, and then copying it over to your Intel machine. It will run
> fine (albeit slowly) under Rosetta, and generate PPC executables.

See also:
http://caml.inria.fr/mantis/bug_view_advanced_page.php?bug_id=4303

Cheers,
-n8

-- 
>>>-- Nathaniel Gray -- Caltech Computer Science ------>
>>>-- Mojave Project -- http://mojave.cs.caltech.edu -->

Re: [Caml-list] Re: Building a universal binary on OS X?

[Alan Schmitt]

[-- Attachment #1.1: Type: text/plain, Size: 362 bytes --]

On 26 mai 08, at 06:43, Nathaniel Gray wrote:

> See also:
> http://caml.inria.fr/mantis/bug_view_advanced_page.php?bug_id=4303

Thanks. Unfortunately Xavier Leroy said there "What you will never  
have, however, is a single OCaml compiler executable that can generate  
code for several target architectures.". Which is exactly what I was  
dreaming of :(

Alan

[-- Attachment #1.2: Type: text/html, Size: 695 bytes --]

[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 186 bytes --]