From: Florian Fainelli <florian@openwrt.org>
To: Richard Weinberger <richard@nod.at>,
user-mode-linux-devel@lists.sourceforge.net
Subject: [uml-devel] [PATCH 2/2] um: disable compile-time buffer checks
Date: Sun, 12 Jun 2011 13:14:41 +0200 [thread overview]
Message-ID: <201106121314.41348.florian@openwrt.org> (raw)
From: Nicolas Thill <nico@openwrt.org>
Ubuntu 8.10 and newer enable compile-time buffer checks by default,
which can sometime cause build failures like this:
LD vmlinux
SYSMAP System.map
SYSMAP .tmp_System.map
LINK linux
Building modules, stage 2.
MODPOST 51 modules
ERROR: "__sprintf_chk" [arch/um/drivers/harddog.ko] undefined!
disable compile-time buffer checks to avoid such errors.
Signed-off-by: Nicolas Thill <nico@openwrt.org>
---
diff --git a/arch/um/Makefile-os-Linux b/arch/um/Makefile-os-Linux
index 2c8a598..2968e0d 100644
--- a/arch/um/Makefile-os-Linux
+++ b/arch/um/Makefile-os-Linux
@@ -6,4 +6,7 @@
# To get a definition of F_SETSIG
USER_CFLAGS += -D_GNU_SOURCE -D_LARGEFILE64_SOURCE
KBUILD_CFLAGS += -D_LARGEFILE64_SOURCE
+# disable compile-time buffer checks, enabled by default on Ubuntu 8.10
+# and later
+KBUILD_CFLAGS += $(call cc-option,-U_FORTIFY_SOURCE)
DEV_NULL_PATH = \"/dev/null\"
--
1.7.4.1
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next reply other threads:[~2011-06-12 11:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-12 11:14 Florian Fainelli [this message]
2011-06-12 11:56 ` [uml-devel] [PATCH 2/2] um: disable compile-time buffer checks Richard Weinberger
2011-06-12 21:52 ` Florian Fainelli
2011-06-12 22:56 ` Richard Weinberger
2011-06-13 12:39 ` Florian Fainelli
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