Re: [Tuxpaint-devel] Tux Paint 0.9.16 build for Mac OS X?

[Martin F. <mf...@gm...>]

On 15-Oct-06, at 4:33 PM, Albert Cahalan wrote:

>>> Would you be able to build a binary that runs native on Intel, too?
>>
>> Yes, I will look into making a Universal binary (PPC/Intel).  The SDL
>> libraries are already universal, so the frameworks just need to be
>> included in the TuxPaint application bundle.  I'll have to compile
>> libiconv, libintl, and libpng as universal libraries, and link those
>> in - provided this goes alright, we should be in business.  We have
>> to keep in mind that universal binary apps need to be compiled with
>> gcc 4, and gcc 4 compiled apps typically require Mac OS X 10.3.9 or
>> later to run (so a universal binary that also runs on 10.2.8 is most
>> likely not possible).
>
> I think you can do this:
>
> 1. compile the ppc version with the old tools
> 2. compile the x86 version with the new tools
> 3. use the new tools (lipo?) to join them into a universal binary
>
> If you do end up with two separate installs, there isn't much
> point in doing a universal binary.

I have universal binaries working (I'll get them posted tonight for  
public testing).  In short, to compile universal binaries of  
libraries with configure scripts, I did the following:

 > setenv CFLAGS '-isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch ppc  
-arch i386''
 > setenv CXXFLAGS '-isysroot /Developer/SDKs/MacOSX10.4u.sdk -arch  
ppc -arch i386'
 > setenv LDFLAGS '-Wl,-syslibroot,/Developer/SDKs/MacOSX10.4u.sdk - 
arch ppc -arch i386'
 > ./configure
 > make

Both ppc and x86 object files and libraries are generated and  
"lipoed" together into universal libraries. To check the architecture  
of a library file, I run:

 > lipo -info libiconv.a
Architectures in the fat file: libiconv.a are: i386 ppc

For libraries without configure scripts (eg. libpng), I first ran  
make to build the ppc library, and copied it into a "ppc" directory.   
I then manually edited the makefiles to include the "-arch i386"  
compiler flag, ran make to build the x86 library, and copied it into  
an "i386" directory.  Finally, I ran lipo as follows:

 > lipo -create i386/libpng.a ppc/libpng.a -output libpng.a

In the TuxPaint XCode project, I turned on the Intel and PPC options  
and selected the Mac OS X 10.4u SDK (see the Read Me in the XCode  
project), and compiled the app.

Martin