Re: [AD] universal binary of 4.2?

["Peter Hull" <peterhull90@xxxxxxxxxx>]

The jargon is that a 'fat' file contains versions for more than one
architecture (PPC, Intel, PPC 64 bit and Intel 64 bit) You can create
a fat .o file by specifying more than one -arch flag to gcc or by
combining two 'thin' .o files using the tool called lipo
Likewise you can create a library by linking fat object files* or
combining two thin libraries, and the same for exes.

So one option is to make a little script that builds a ppc version,
renames it, builds the i386 version, renames that, then combines the
two with lipo.

Apple have a lot of info on their website, it's well worth a read
first to get the general idea.

Universal binaries are indeed twice the size, and you need to make
sure your data loaders are not architecture-dependent or you'll have
to double up on the data too!

Pete
* but you should use libtool instead of ar (see man libtool for why)

On 8/31/06, Kirk Black <runesabre@xxxxxxxxxx> wrote:
> Hi Peter,
>
> I eventually want to create a universal binary out of my Mac Allegro game.
> I've got a networking library and zlib/libpng that will also need converted
> to a universal binary format.
>
> I'm unfamiliar with universal binaries.  I'm still undecided if I should
> simply build separate PPC and Intel Mac applications and distribute them
> separately or strive to create a universal binary out of them so I
> essentially only have one Mac package to maintain.
>
> Can any project that already compiles successfully be built as a universal
> binary with the addition of some cflag options such that I could take all
> the existing libraries I need to run my application and create my own
> universal binaries?  Or will I have to track down and wait for ub support in
> every library I'm using from their maintainers?
>
> Are universal binaries twice the size of a regular binary?
>
> Kirk Black
> President / Owner
> Family Time! Interactive, L.L.C.
> Mobile: 512.771.5762
> Email: runesabre@xxxxxxxxxx
>
> -----Original Message-----
> From: alleg-developers-bounces@xxxxxxxxxx
> [mailto:alleg-developers-bounces@xxxxxxxxxx] On Behalf Of Peter
> Hull
> Sent: Thursday, August 31, 2006 5:04 AM
> To: Coordination of admins/developers of the game programming library
> Allegro
> Subject: Re: [AD] universal binary of 4.2?
>
> Or in other words can you try adding
> -isysroot /Developer/SDKs/MacOSX10.4u.sdk  to CFLAGS (makefile.osx line 144)
> and
> -Wl,-syslibroot,/Developer/SDKs/MacOSX10.4u.sdk to LFLAGS
> (makefile.osx line 145)
> and see if that works?
>
> Thanks
>
> Pete
>
>
> On 8/30/06, Peter Hull <peterhull90@xxxxxxxxxx> wrote:
> > You should
> > ./fix.sh macosx-universal
> > make
> > - that works for me but on PPC you might need to define the location
> > of your Universal SDK
> > Have a look at this
> > http://developer.apple.com/technotes/tn2005/tn2137.html
> >
> > We might need to add some -isysroot options into the flags
> >
> > Pete
> >
> >
> > On 8/30/06, Jon Rafkind <workmin@xxxxxxxxxx> wrote:
> > > How do I go about making a universal dylib( osx ) of 4.2? I see in
> > > makefile.osx stuff about ifdef UB; CFLAGS += -arch ppc -arch i386; but
> > > when I define UB I get the following error
> > >
> > > gcc -DALLEGRO_SRC -DALLEGRO_LIB_BUILD  -Wall -Wno-unused
> > > -Wno-long-double  -O2 -funroll-loops -ffast-math -fomit-frame-pointer
> > > -fno-common -pipe -dynamic -arch ppc -arch i386 -DALLEGRO_NO_ASM
> > > -Ilibpng -I. -I./include -o obj/macosx/alleg/allegro.o -c src/allegro.c
> > > gcc: installation problem, cannot exec 'i686-apple-darwin8-gcc-4.0.0':
> > > No such file or directory
> > > lipo: can't figure out the architecture type of: /var/tmp//ccbpYPmx.out
> > > make: *** [obj/macosx/alleg/allegro.o] Error 255
> > >
> > >
> -------------------------------------------------------------------------
> > > Using Tomcat but need to do more? Need to support web services,
> security?
> > > Get stuff done quickly with pre-integrated technology to make your job
> easier
> > > Download IBM WebSphere Application Server v.1.0.1 based on Apache
> Geronimo
> > > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> > > --
> > > https://lists.sourceforge.net/lists/listinfo/alleg-developers
> > >
> >
>
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job
> easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> --
> https://lists.sourceforge.net/lists/listinfo/alleg-developers
>
>
> -------------------------------------------------------------------------
> Using Tomcat but need to do more? Need to support web services, security?
> Get stuff done quickly with pre-integrated technology to make your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> --
> https://lists.sourceforge.net/lists/listinfo/alleg-developers