From c504d90c1159bd0fadd37bb3098ecf8622d0b13c Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Mon, 12 Jan 2009 16:30:32 +0000
Subject: * Support i686-linux builds directly on x86_64-linux Nix  
 installations.  This is implemented using the personality() syscall,   which
 causes uname to return "i686" in child processes.

---
 configure.ac | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index fdf898640a8b..44c22c19b050 100644
--- a/configure.ac
+++ b/configure.ac
@@ -100,12 +100,17 @@ AC_CHECK_HEADERS([sys/mount.h], [], [],
 ])
 
 
-# Check for <locale>
+# Check for <locale>.
 AC_LANG_PUSH(C++)
 AC_CHECK_HEADERS([locale], [], [], [])
 AC_LANG_POP(C++)
 
 
+# Check whether we have the personality() syscall, which allows us to
+# do i686-linux builds on x86_64-linux machines.
+AC_CHECK_HEADERS([sys/personality.h])
+
+
 AC_DEFUN([NEED_PROG],
 [
 AC_PATH_PROG($1, $2)
-- 
cgit 1.4.1