From: Florian Fainelli <florian@openwrt.org>
To: Richard Weinberger <richard@nod.at>,
user-mode-linux-devel@lists.sourceforge.net
Subject: [uml-devel] [PATCH 1/2] um: disable funit-at-a-time for gcc < 4.3
Date: Sun, 12 Jun 2011 13:14:39 +0200 [thread overview]
Message-ID: <201106121314.39884.florian@openwrt.org> (raw)
From: Nicolas Thill <nico@openwrt.org>
Building UML with gcc < 4.3 with -funit-at-a-time for i386 causes startup
crashes, disabling funit-at-a-time works around it.
Signed-off-by: Nicolas Thill <nico@openwrt.org>
---
diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386
index 302cbe5..8251030 100644
--- a/arch/um/Makefile-i386
+++ b/arch/um/Makefile-i386
@@ -35,7 +35,7 @@ cflags-y += -ffreestanding
# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
# a lot more stack due to the lack of sharing of stacklots. Also, gcc
# 4.3.0 needs -funit-at-a-time for extern inline functions.
-KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
+KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0403 ] ; then \
echo $(call cc-option,-fno-unit-at-a-time); \
else echo $(call cc-option,-funit-at-a-time); fi ;)
--
1.7.4.1
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next reply other threads:[~2011-06-12 11:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-12 11:14 Florian Fainelli [this message]
2011-06-12 23:45 ` [uml-devel] [PATCH 1/2] um: disable funit-at-a-time for gcc < 4.3 Richard Weinberger
2011-06-14 9:46 ` Florian Fainelli
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