[PATCH] Move x86-64 abilist files to 64/nptl

[H.J. Lu]

On Wed, May 2, 2012 at 9:39 AM, Carlos O'Donell <carlos@systemhalted.org> wrote:
> 2012/4/30 H.J. Lu <hongjiu.lu@intel.com>:
>> Hi,
>>
>> X32 abilist files are different from x86-64 ones.  This patch moves
>> x86-64 abilist files to 64/nptl.  Tested on Linux/x86-64.  OK to install?
>
> How does the 64/ directory get used to find the abilist files for x86-64?
>
> I think the idea you have here is correct, namely that we need to
> store two sets of abilist files for x86-64 and x32 in one machine
> directory.
>

sysdeps/x86_64/preconfigure.in has

test -n "$base_machine" || case "$machine" in
x86_64)
  base_machine=x86_64
  # Check if we are building for x32.
  AC_CACHE_CHECK(whether $CC compiles in -mx32 mode by default,
		 libc_cv_x32, [dnl
  AC_TRY_COMPILE(dnl
[#ifndef __ILP32__
# error not x32
#endif], [], libc_cv_x32=yes, libc_cv_x32=no)])
  if test $libc_cv_x32 = yes; then
    machine=x86_64/x32
  else
    machine=x86_64/64
  fi
  ;;
esac

x86_64/64 is searched when __ILP32__ isn't defined.


-- 
H.J.