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powerpc: enhance 32/64bit detection

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We were using uname to determine if userspace was 32 or 64bit.
This fails when we have a 64bit kernel and a 32bit userspace.

* configure.ac (powerpc*): Similar to x86, use a runtime test
to determine if we are 32 or 64bit.

Signed-off-by: Anton Blanchard <anton@samba.org>
This commit is contained in:
Anton Blanchard 2013-07-11 12:03:57 +10:00 committed by Dmitry V. Levin
parent 9459dfb891
commit 9afc2ee682
1 changed files with 5 additions and 1 deletions
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6
configure.ac
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@ -54,7 +54,11 @@ alpha*)
powerpc*)
arch=powerpc
AC_DEFINE([POWERPC], 1, [Define for the PowerPC architecture.])
if test $host_cpu = powerpc64; then
AC_TRY_COMPILE(
[#ifndef __LP64__
# error 32 bit
#endif], [], ppc_bits=64, ppc_bits=32)
if test "$ppc_bits" = "64"; then
AC_DEFINE([POWERPC64], 1, [Define for the PowerPC64 architecture.])
fi
;;