I finally got around to building and testing the objc support in gcc on Darwin PPC at -m64. The results aren't good with 634 additional failures compared to the 10 at -m32. These seem to be linkage issues of the form below as shown in...
http://gcc.gnu.org/ml/gcc-testresults/2006-09/msg00844.html testcase /sw/src/fink.build/gcc4-4.1.9999-20060915/gcc-4.2-20060915/gcc/testsuite/objc/compile/compile.exp completed in 2 seconds Running /sw/src/fink.build/gcc4-4.1.9999-20060915/gcc-4.2-20060915/gcc/testsuite/objc/execute/exceptions/exceptions.exp . .. set_ld_library_path_env_vars: ld_library_path=.::/sw/src/fink.build/gcc4-4.1.9999-20060915/darwin_objdir/gcc:/sw/src/fink .build/gcc4-4.1.9999-20060915/darwin_objdir/gcc:/sw/src/fink.build/gcc4-4.1.9999-20060915/darwin_objdir/gcc:/sw/src/fink. build/gcc4-4.1.9999-20060915/darwin_objdir/gcc:/sw/src/fink.build/gcc4-4.1.9999-20060915/darwin_objdir/gcc:/sw/src/fink.b uild/gcc4-4.1.9999-20060915/darwin_objdir/gcc:/sw/src/fink.build/gcc4-4.1.9999-20060915/darwin_objdir/gcc:/sw/src/fink.bu ild/gcc4-4.1.9999-20060915/darwin_objdir/gcc Executing on host: /sw/src/fink.build/gcc4-4.1.9999-20060915/darwin_objdir/gcc/xgcc -B/sw/src/fink.build/gcc4-4.1.9999-20 060915/darwin_objdir/gcc/ /sw/src/fink.build/gcc4-4.1.9999-20060915/gcc-4.2-20060915/gcc/testsuite/objc/execute/exception s/catchall-1.m -w -O0 -fobjc-exceptions -lobjc -lm -m64 -o /sw/src/fink.build/gcc4-4.1.9999-20060915/darwin_objdir/ gcc/testsuite/objc/catchall-1.x0 (timeout = 300) ld64 warning: in /usr/lib/libobjc.dylib, file is not of required architecture Undefined symbols: _objc_exception_throw, referenced from: _test in ccVj9eiG.o _test in ccVj9eiG.o _objc_exception_try_exit, referenced from: _test in ccVj9eiG.o _objc_exception_extract, referenced from: _test in ccVj9eiG.o _test in ccVj9eiG.o .objc_class_name_Object, referenced from: [EMAIL PROTECTED]@[EMAIL PROTECTED] in ccVj9eiG.o .objc_class_name_Frob in ccVj9eiG.o _objc_exception_try_enter, referenced from: _test in ccVj9eiG.o _test in ccVj9eiG.o _objc_msgSend, referenced from: _test in ccVj9eiG.o _objc_exception_match, referenced from: _test in ccVj9eiG.o ld64-59.2 failed: symbol(s) not found collect2: ld returned 1 exit status compiler exited with status 1 output is: ld64 warning: in /usr/lib/libobjc.dylib, file is not of required architecture Undefined symbols: _objc_exception_throw, referenced from: _test in ccVj9eiG.o _test in ccVj9eiG.o _objc_exception_try_exit, referenced from: _test in ccVj9eiG.o _objc_exception_extract, referenced from: _test in ccVj9eiG.o _test in ccVj9eiG.o .objc_class_name_Object, referenced from: [EMAIL PROTECTED]@[EMAIL PROTECTED] in ccVj9eiG.o .objc_class_name_Frob in ccVj9eiG.o _objc_exception_try_enter, referenced from: _test in ccVj9eiG.o _test in ccVj9eiG.o _objc_msgSend, referenced from: _test in ccVj9eiG.o _objc_exception_match, referenced from: _test in ccVj9eiG.o ld64-59.2 failed: symbol(s) not found collect2: ld returned 1 exit status FAIL: objc/execute/exceptions/catchall-1.m compilation, -O0 UNRESOLVED: objc/execute/exceptions/catchall-1.m execution, -O0 I should mention that I don't have this build of gcc trunk installed so it is being tested out of the build directory. However, it should be smart enough to at least look in a ppc64 subdirectory for the required libobjc.dylib, no? Jack ps I'll file a PR on this shortly. I imagine this is all a Makefile issue so we really should try to fix it for gcc 4.2.