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

["Joseph S. Myers" <joseph at codesourcery dot com>]

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.

-- 
Joseph S. Myers
joseph@codesourcery.com