[LLVMdev] help with an error message using clang ?

[Christine Cheng]

Hi Eli,

Thanks for the reply. Indeed there is solaris on the Sparc machine. I was
told that it is quite difficult to install LLVM there so I am doing what I
am doing. Is there a way for me to get headers from the target Sparc machine
without installing LLVM there?

Best,
Christine

On Fri, Sep 16, 2011 at 4:56 PM, Eli Friedman <eli.friedman at gmail.com>wrote:

> On Fri, Sep 16, 2011 at 4:40 PM, Christine Cheng <clcheng at stanford.edu>
> wrote:
> > Hi,
> >
> > I am new to LLVM and clang and I would like to seek some professional
> help.
> > :)
> >
> > I have been trying to compile some C code on a linux x86 computer for a
> > Sparc machine.
> >
> > I used:
> >
> >  clang -ccc-host-triple sparc-unknown-linux -ccc-clang-archs sparc
> -pthreads
> > -lm  -emit-llvm test.c -c -o -test.bc
> >
> > The following error messages are produced:
> >
> > /usr/include/pthread.h:665:6: error: 'regparm' is not valid on this
> platform
> >      __cleanup_fct_attribute;
> >      ^~~~~~~~~~~~~~~~~~~~~~~
> > In file included from TEST.C:46:
> > In file included from /usr/include/stdlib.h:320:
> > In file included from /usr/include/sys/types.h:271:
> > /usr/include/bits/pthreadtypes.h:222:50: note: instantiated from:
> > # define __cleanup_fct_attribute __attribute__ ((__regparm__ (1)))
> >                                                  ^            ~
> > In file included from TEST.C:65:
> > /usr/include/pthread.h:677:3: error: 'regparm' is not valid on this
> platform
> >   __cleanup_fct_attribute;
> >   ^~~~~~~~~~~~~~~~~~~~~~~
> > In file included from TEST.C:46:
> > In file included from /usr/include/stdlib.h:320:
> > In file included from /usr/include/sys/types.h:271:
> > /usr/include/bits/pthreadtypes.h:222:50: note: instantiated from:
> > # define __cleanup_fct_attribute __attribute__ ((__regparm__ (1)))
> >                                                  ^            ~
> > In file included from TEST.C:65:
> > /usr/include/pthread.h:718:6: error: 'regparm' is not valid on this
> platform
> >      __cleanup_fct_attribute __attribute__ ((__noreturn__))
> >      ^~~~~~~~~~~~~~~~~~~~~~~
> >
> > What causes the errors and how can I fix it?
>
> You're using headers from your x86 machine to compile code for Sparc
> (and possibly a different OS?); that doesn't work in general.  You'll
> need to somehow use headers from your target Sparc machine to make
> things work properly; you can probably just copy them, and use
> -nostdinc plus some -I flags to make clang use them.
>
> -Eli
>
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