[AArch64] Binutils/gas/ld port for ARM's new 64-bit architecture, AArch64 [1/6] Toplevel configury changes

[Yufeng Zhang]

On 07/30/12 15:49, Joseph S. Myers wrote:
> On Mon, 30 Jul 2012, Yufeng Zhang wrote:
>
>> diff --git a/configure.ac b/configure.ac
>> index 5efb4a3..83ea5bc 100644
>> --- a/configure.ac
>> +++ b/configure.ac
>> @@ -842,6 +842,17 @@ case "${target}" in
>>       ;;
>>     *-*-vxworks*)
>>       ;;
>> +  aarch64*-*-elf* )
>> +    noconfigdirs="$noconfigdirs target-libffi target-qthreads"
>> +    libgloss_dir=aarch64
>> +    ;;
>> +  aarch64*-*-linux* )
>> +    noconfigdirs="$noconfigdirs target-libffi target-qthreads"
>> +    case ${with_newlib} in
>> +      no) noconfigdirs="$noconfigdirs target-newlib target-libgloss"
>> +    esac
>> +    libgloss_dir=aarch64
>> +    ;;
>
> This appears to be modifying the miscellaneous section of configure.ac,
> not taking account of the various cleanups I did a while back.
>
> Java is disabled in the "# Disable Java if libffi is not supported."
> section, using a whitelist of targets supported by libffi, so you don't
> need to disable it here.  I removed all references to target-qthreads on
> 2011-04-06 so you shouldn't need to handle that either.  newlib is
> disabled by default for *-*-linux* under "# Disable newlib and libgloss
> for various target OSes."; if you have a newlib port for
> aarch64*-*-linux*, then at the time you submit that port you can add
> special code like that for i[[3456789]]86-*-linux* to control whether
> newlib may be built for that target.  Finally, libgloss_dir should be set
> in the cases below "# Default libgloss CPU subdirectory.", based on the
> architecture not the OS.
>
> Thus, to the extent that this patch does things that are still relevant
> after my cleanups, (a) those things need to go in more logical places in
> configure.ac and (b) those things relate to newlib/libgloss and so would
> better be submitted with the newlib/libgloss port, to the newlib list,
> rather than as part of a binutils port to the binutils list.

Many thanks for your detailed suggestion.  The configure.ac now no 
longer needs any modification for the AArch64 port support, and I'll 
submit newlib/libgloss port related change to the newlib list.


Thanks,
Yufeng