From 107fefd4dd56748878f1ffc44c321c29f6180748 Mon Sep 17 00:00:00 2001
From: Ilija Hadzic <ihadzic@research.bell-labs.com>
Date: Fri, 7 Dec 2012 16:49:43 -0500
Subject: [PATCH] staging: usbip: userspace: add option to turn fortify on or
 off

This comes handy when hacking with different cross
compilers, some of which may or may not have
_FORTIFY_SOURCE turned on by default. This patch
allows us to turn _FORTIFY_SOURCE on by specifying
--with-fortify option at configuration time (or
to turn it off by specifying --without-fortify).

If nothing is specified, default compiler behavior
is assumed.

Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/staging/usbip/userspace/configure.ac | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/drivers/staging/usbip/userspace/configure.ac b/drivers/staging/usbip/userspace/configure.ac
index 6d52841e1cf5..2be4060f9036 100644
--- a/drivers/staging/usbip/userspace/configure.ac
+++ b/drivers/staging/usbip/userspace/configure.ac
@@ -91,5 +91,22 @@ AC_ARG_WITH([usbids-dir],
 	    [USBIDS_DIR=$withval], [USBIDS_DIR="/usr/share/hwdata/"])
 AC_SUBST([USBIDS_DIR])
 
+# use _FORTIFY_SOURCE
+AC_MSG_CHECKING([whether to use fortify])
+AC_ARG_WITH([fortify],
+	    [AS_HELP_STRING([--with-fortify],
+			    [use _FORTIFY_SROUCE option when compiling)])],
+			    dnl [ACTION-IF-GIVEN]
+			    [if test "$withval" = "yes"; then
+				AC_MSG_RESULT([yes])
+				CFLAGS="$CFLAGS -D_FORTIFY_SOURCE -O"
+			     else
+			     	AC_MSG_RESULT([no])
+				CFLAGS="$CFLAGS -U_FORTIFY_SOURCE"
+			     fi
+			    ],
+			    dnl [ACTION-IF-NOT-GIVEN]
+			    [AC_MSG_RESULT([default])])
+
 AC_CONFIG_FILES([Makefile libsrc/Makefile src/Makefile])
 AC_OUTPUT
-- 
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