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Re: X-compling on intel for 10.3 PPC
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Re: X-compling on intel for 10.3 PPC

  • Subject: Re: X-compling on intel for 10.3 PPC
  • From: Rustam Muginov <email@hidden>
  • Date: Wed, 14 Feb 2007 10:30:38 +0300
We are performing cross-builds of PPC code on intelmacs using the following flags in our makefiles:
CPPFLAGS+=  -arch ppc -isysroot /Developer/SDKs/MacOSX10.4.u.sdk
LINKFLAGS+= -arch ppc -Wl,-syslibroot,/Developer/SDKs/MacOSX10.4.u.sdk

This is the case when we are using gcc-4 to build PPC binary, which would require at least Mac OS X 10.3.9 to run
Please note the "-Wl," parameter to gcc, it is used to force gcc to pass further parameter to linker

If you would require to run PowerPC apps on the Mac OS X version 10.3.8 or earlier, then you have to use gcc-3.3 to build PowerPC version which could have different flags


--
Sincerely,
Rustam Muginov

On Feb 14, 2007, at 5:49 AM, Conrad G T Yoder wrote:

I am trying to create a UB which will run on 10.3 PPC, and 10.4 everywhere,
but I am running into some snags.  My situation:

Build machine: i386 iMac, OS X 10.4.8, running Xcode 2.3 (gcc 4.0.1 build
5341).

I am using makefiles, building each architecture independently, and then
combining libs and executables using lipo.  Everything was complete and
working, building only for 10.4.  Then I got the requirement that the PPC
binary needed to work with 10.3.9.  I added "-isysroot
/Developer/SDKs/MacOSX10.3.9.sdk" to my makefiles for object code creation.
Everything built fine, but when running the UB on PPC 10.3.9, I get the
runtime error:

dyld: ./CPSI Undefined symbols:
./MyApp undefined reference to ___cxa_atexit expected to be defined in
/usr/lib/libSystem.B.dylib

So, I went back to add "-syslibroot /Developer/SDKs/MacOSX10.3.9.sdk" to the
link (ld) lines, but now on one of my .dylibs I am building, I am getting an
error of ___cxa_atexit being undefined.  What am I missing here?  Thanks for
any assistance.

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 >X-compling on intel for 10.3 PPC (From: Conrad G T Yoder <email@hidden>)

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