Mojca Miklavec writes: > > - The patch is complete: When you compile with "gcc -arch ppc64" you > > get executables of type 'Mach-O 64-bit executable ppc64' but such > > files are not directly executable on x86_64 Mac OS X 10.5.8: > > $ ./a.out > > -bash: ./a.out: Bad CPU type in executable > > What do you actually get in that case? > > I thought it would return powerpc64, but I'm not 100% sure how the > flow goes in that case.
The output of config.guess in this case is irrelevant. config.guess is designed to guess a default for the --build option. When you set CC to a compiler that produces binaries that cannot be executed on the current machine, you should also pass a matching --host option. > >> (1) Which platform am I building for? > >> (2) Which platform am I running on / which binaries should I download? > > > > config.guess is the answer for (1). That's why it uses $CC_FOR_BUILD. > ... > > For (2) there is no simple answer on bi-arch systems. > > There might not be an unique answer, but there are usually reasonable > defaults (which could often be extracted without consulting the > compiler). And config.guess probably comes the closest to any other > alternative when determining that for such a wide range of platforms. This is irrelevant for config.guess. config.guess has not been designed to answer the question "which binaries should I download". Bruno _______________________________________________ config-patches mailing list config-patches@gnu.org https://lists.gnu.org/mailman/listinfo/config-patches
