From d8bc20eb43fc17f1c15f1b477cde4263c2e31227 Mon Sep 17 00:00:00 2001
From: Yang Tse <yangsita@gmail.com>
Date: Wed, 7 Mar 2007 17:59:03 +0000
Subject: force libtool to build static libraries with PIC on AMD64

---
 configure.ac | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 09eb4ea..d1905d2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,6 +7,14 @@ AM_CONFIG_HEADER(config.h)
 AM_MAINTAINER_MODE
 AM_INIT_AUTOMAKE(c-ares, CVS)
 
+dnl
+dnl Detect the canonical host and target build environment
+dnl
+
+AC_CANONICAL_HOST
+dnl Get system canonical name
+AC_DEFINE_UNQUOTED(OS, "${host}", [cpu-machine-OS])
+
 AC_AIX
 AC_PROG_CC
 AC_PROG_INSTALL
@@ -75,6 +83,18 @@ m4_defun([AC_LIBTOOL_CXX],[])
 m4_ifdef([AC_LIBTOOL_F77], [m4_undefine([AC_LIBTOOL_F77])])
 m4_defun([AC_LIBTOOL_F77],[])
 
+dnl force libtool to build static libraries with PIC on AMD64
+AC_MSG_CHECKING([if target is AMD64 (to build static libraries with PIC)])
+case $host in
+  x86_64*linux* | *-*-cygwin)
+    AC_MSG_RESULT([yes])
+    with_pic=yes
+    ;;
+  *)
+    AC_MSG_RESULT([no])
+    ;;
+esac
+
 dnl libtool setup
 AC_PROG_LIBTOOL
 
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