From 70ee40161f6faa1faa8670ca2fd7b517c4de0598 Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Mon, 16 Jun 2008 00:49:28 +0000
Subject: Enable usage of PIE by default

---
 acinclude.m4 | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'acinclude.m4')

diff --git a/acinclude.m4 b/acinclude.m4
index e12fd01a..6242e390 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -45,13 +45,18 @@ AC_DEFUN([AC_INIT_BLUEZ], [
 ])
 
 AC_DEFUN([AC_ARG_BLUEZ], [
-	fortify_enable=yes
 	debug_enable=no
+	fortify_enable=yes
+	pie_enable=yes
 
 	AC_ARG_ENABLE(fortify, AC_HELP_STRING([--disable-fortify], [disable compile time buffer checks]), [
 		fortify_enable=${enableval}
 	])
 
+	AC_ARG_ENABLE(pie, AC_HELP_STRING([--disable-pie], [enable position independent executables flag]), [
+		pie_enable=${enableval}
+	])
+
 	AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug], [enable compiling with debugging information]), [
 		debug_enable=${enableval}
 	])
@@ -60,6 +65,11 @@ AC_DEFUN([AC_ARG_BLUEZ], [
 		CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
 	fi
 
+	if (test "${pie_enable}" = "yes" && test "${ac_cv_prog_cc_pie}" = "yes"); then
+		CFLAGS="$CFLAGS -fPIC"
+		LDFLAGS="$LDFLAGS -pie"
+	fi
+
 	if (test "${debug_enable}" = "yes" && test "${ac_cv_prog_cc_g}" = "yes"); then
 		CFLAGS="$CFLAGS -g -O0"
 	fi
-- 
cgit