Re: Which target should i assign?

[Kai Ruottu <kai dot ruottu at luukku dot com>]

hesi726 wrote:
> 
>     Which target should i assign when I want build a cross-compile with gcc at my i686-linux-2.2.14 for sun saloris(sparc)?

 It depends on your Solaris2 target... Solaris2.4 isn't the same as Solaris2.7.
But the target name is 'sparc-solaris2.x', and you must know the 'x' yourself.

> Is it sparc-elf?If so,after i build the cross-compile ,what should i do?
>     For example , I compile and link a "Hello,World" program with
> sparc-elf-gcc at my linux machine,but it don't work at solaris ,
> why?

 If the executable type is '.EXE' in DOS and the executable type is '.EXE' in
VAX/VMS, should one be able to run DOS executables under VAX/VMS and VAX/VMS
executables under DOS ?  Or at least WinNT-executables under MS-DOS and of
course all DOS-executables under WinNT ?  Even the answer to the last is "No"...

 The ELF-object format is not an ABI...

 If the 'fully defined target' for your 'sparc-elf' executables is Solaris2,
you may run them there, but first you must have:

 1. The 'pure' sparc-elf C-library, 'libc.a' from newlib. This has none of
    the low-level I/O-routines (read(), write(), open(),...) and memory
    handling routines included.

 2. The glue library to SPARC/Solaris2.x, 'libsolaris2.a' (or something).
    This includes all the missing low-level I/O-routines etc., implemented
    using the syscall-mechanism for Solaris2/SVR4. Please see the
<sys/syscall.h>
    about the syscalls or use the Solaris2 docs (preferred if you are aiming
    into a "Free C library for Solaris2")...

 Your programs will be statically linked.

 The big question is why you would like to do this when the Sparc/Solaris2.7
and 2.8 install media is available freely and you can find the target headers
and libs there. If you have the Solaris2 machine available, copying the target
stuff from it is the natural choice, after solving the legal issues first...

Cheers, Kai



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