a.out: cannot execute binary file

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a.out: cannot execute binary file

Hello

I've tried to compile gcc4 on an old g4 (Mac OS X 10.3) to be able to build universal binaries.
(I followed the instructions on http://biolpc22.york.ac.uk/pub/linux-mac-cross/)
I can compile stuff for ppc, but when I compile with "-arch i686" and run the app, after moving the binaries to my intel mac, it returns "./a.out: cannot execute binary file".
Something strange (IMO): when i compile every .c file with "gcc4 -c xx.c", move them to my intel mac and link them there, it runs without problems.

What can cause this problem?
Bye

Posted on Mar 31, 2008 5:00 AM

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Answer 1

Mar 31, 2008 8:26 AM in response to vortexfive

Type *file a.out* on both architectures to find more info about the a.out executable.

Mihalis.

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Answer 2

vortexfive Author

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Mar 31, 2008 11:23 AM in response to Mihalis Tsoukalos

file a.out gives the right architecture.

a.out: Mach-O executable i386

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Answer 3

Mar 31, 2008 11:28 AM in response to vortexfive

I would try creating and running a static binary a.out.

Mihalis.

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Answer 4

vortexfive Author

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Mar 31, 2008 11:35 AM in response to Mihalis Tsoukalos

i686-apple-darwin8-gcc -arch i686 -static src.c

returns:

/opt/mac/bin/i686-apple-darwin8-ld: can't locate file for: -lcrt0.o
collect2: ld returned 1 exit status

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Answer 5

vortexfive Author

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Mar 31, 2008 12:14 PM in response to vortexfive

I don't think it's just coincidence that running gcc with the same options on my intel mac and old gcc installation returns the same error:

cc -static src.c
ld: can't locate file for: -lcrt0.o

Am I using the wrong options?

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Answer 6

Mar 31, 2008 12:31 PM in response to vortexfive

Try using the -Wall option in case you get some useful error messages or warning.

Mihalis.

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Answer 7

vortexfive Author

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Mar 31, 2008 12:41 PM in response to Mihalis Tsoukalos

Nothing new...
Tried it with and without -static

I already want to thank you for your trying to help me.

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Answer 8

Mar 31, 2008 6:45 PM in response to vortexfive

vortexfive wrote:
Something strange (IMO): when i compile every .c file with "gcc4 -c xx.c", move them to my intel mac and link them there, it runs without problems.

Hmm. That sounds like a good clue to look at. You need to be able to link to the Intel libraries on your G4 and it may not be doing that. I looked at the link you posted and it's quite frankly well beyond me. But I'd say you need to look at where the binaries are being linked and make sure they're linking to the Universal Mac OS 10.4 SDK libraries and not the 10.3 ones. But exactly how you'd do that, I'm not sure...

charlie

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Answer 9

vortexfive Author

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Apr 1, 2008 1:08 AM in response to Charles Minow

I've tried *-isysroot /.../MacOSX10.4u.sdk* without succes.

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