linux-kernel - [PATCH] um: fix strrchr problems

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Date:	Tue, 30 Aug 2011 13:04:04 +0200
From:	Richard Weinberger <richard@....at>
To:	akpm@...ux-foundation.org
Cc:	linux-kernel@...r.kernel.org,
	user-mode-linux-devel@...ts.sourceforge.net,
	Al Viro <viro@....linux.org.uk>, jdike@...toit.com,
	Al Viro <viro@...iv.linux.org.uk>,
	Richard Weinberger <richard@....at>
Subject: [PATCH] um: fix strrchr problems

From: Al Viro <viro@....linux.org.uk>

[richard@....at:
Fixes:
/usr/lib/gcc/x86_64-linux-gnu/4.4.5/../../../../lib/libc.a(strrchr.o): In function `rindex':
(.text+0x0): multiple definition of `strrchr'

If both STATIC_LINK and UML_NET_VDE are set to "y" libc's strstr
may clash with the kernel implementation.

This workaround comes originally from Jeff Dike:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=494995#35
]

CC: jdike@...toit.com
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@....at>
---
 arch/um/Makefile |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/um/Makefile b/arch/um/Makefile
index fab8121..c0f712c 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -41,7 +41,7 @@ KBUILD_CPPFLAGS += -I$(srctree)/$(ARCH_DIR)/sys-$(SUBARCH)
 KBUILD_CFLAGS += $(CFLAGS) $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
 	$(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap	\
 	-Din6addr_loopback=kernel_in6addr_loopback \
-	-Din6addr_any=kernel_in6addr_any
+	-Din6addr_any=kernel_in6addr_any -Dstrrchr=kernel_strrchr
 
 KBUILD_AFLAGS += $(ARCH_INCLUDE)
 
-- 
1.7.6.1

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