ARM: 7420/1: Improve build environment isolation

Increasingly distributions are setting default build environments to
have LDFLAGS with hardening options. There seems to be an assumption
with those options that LDFLAGS are passed to the compiler frontend
rather than used directly with ld (which the kernel build process
assumes)

To prevent build failures in such environments this patch changes the
ARM architecture Makefile to override the LDFLAGS from the environment
similar to the behaviour on other common architectures e.g. x86

Signed-off-by: Vincent Sanders <vince@collabora.co.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 0298b00fe2413a1964cd899b9834136c3166136a..f8ebf1e97027ff5fc96094d7c8b302ae7c6e181c 100644 (file)
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -10,6 +10,9 @@
 #
 # Copyright (C) 1995-2001 by Russell King
 
+# Ensure linker flags are correct
+LDFLAGS                :=
+
 LDFLAGS_vmlinux        :=-p --no-undefined -X
 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
 LDFLAGS_vmlinux        += --be8