Brian Dessent - Re: AIX Cross compile on Mac OS X This is the mail archive of the gcc-help@gcc.gnu.org mailing list for the. Index Nav: Message Nav: Other format: Re: AIX Cross compile on Mac OS X.
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From: Brian Dessent. To: Perry Smith. Cc: MSX to GCC. Date: Wed, 31 Jan 2007 17:07:55 -0800. Subject: Re: AIX Cross compile on Mac OS X. References:.
Reply-to: gcc-help at gcc dot gnu dot org Perry Smith wrote: I tried just copying over the AIX header files and using the Mac compiler but I run off into the weeds. I'm guessing that the Mac compiler has a different set of predefines. I tried to specify the AIX predefines by looking at the output with -v set but I'm still not able to compile. I have -nostdinc set and a few -I options set along with a couple of -Uxxx to take out what the Mac compiler defines and a couple -Dxxx to add in what the AIX compiler defines. It still isn't working.
That's a bad idea, and I don't expect it would ever work right. An ABI is a lot more than just defines. So, then I thought I would try to compile gcc using the cross compiler options using the Mac as the host and AIX as the target. I get up to where it tries to build libstdc and then the configure script stops with 'undefined host/target combination'. I've loaded binutils on the Mac, compiled with AIX as the target as well. Still no go.
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This should work fine. It would help if you specified more details, e.g. What was the exact configure command and target specification did you use? From looking at gcc-testresults it looks like you want 'powerpc-ibm-aix5.3.0.0', but the output of config.guess on the system ought to tell you what to use. Note that you will need your cross-binutils already installed and in the path if you want to build any of the target libraries (libgcc, libstdc, libgfortran, libgcj, etc.) But at that point, the compiler itself has already been built, so if you want to use it for compiling only and not linking then it should be sufficient. I think the make target is all-gcc to build just gcc and no target libraries. However since your goal is to verify code when not online then you ought to actually build a working cross-toolchain and link the output binary, since that will catch a lot of bugs that just compiling would not.
By the time you have a working cross-binutils and cross-gcc getting the target libraries cross compiled should be pretty simple, assuming that you've copied over the system headers into $prefix/$target/include and startup objects into $prefix/$target/lib. Brian. Follow-Ups:. From: Kai Ruottu. From: Perry Smith. References:.
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