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authorNathan Lynch <nathan_lynch@mentor.com>2015-04-18 00:39:16 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2015-04-21 15:28:02 +0100
commitf80f6531b47c538b69769ada5e9fbacad085b34d (patch)
tree9bb3174c477c99a575e4d73bf91816ce4f8a47d7 /arch/arm/vdso
parent2b507a2d9c7fdea3215aedf0a0e3660309f319e1 (diff)
downloadlinux-f80f6531b47c538b69769ada5e9fbacad085b34d.tar.bz2
ARM: 8344/1: VDSO: honor CONFIG_VDSO in Makefile
When CONFIG_VDSO=n, the build normally does not enter arch/arm/vdso/ because arch/arm/Makefile does not add it to core-y. However, if the user runs 'make arch/arm/vdso/' the VDSO targets will get visited. This is because the VDSO Makefile itself does not consider the value of CONFIG_VDSO. It is arguably better and more consistent behavior to generate an empty built-in.o when CONFIG_VDSO=n and the user attempts to build arch/arm/vdso/. It's nicer because it doesn't try to build things that Kconfig dependencies are there to prevent (e.g. the dependency on AEABI), and it's less confusing than building objects that won't be used in the final image. Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/vdso')
-rw-r--r--arch/arm/vdso/Makefile4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/vdso/Makefile b/arch/arm/vdso/Makefile
index bab0a8be7924..8aa791051029 100644
--- a/arch/arm/vdso/Makefile
+++ b/arch/arm/vdso/Makefile
@@ -10,8 +10,8 @@ ccflags-y := -shared -fPIC -fno-common -fno-builtin -fno-stack-protector
ccflags-y += -nostdlib -Wl,-soname=linux-vdso.so.1 -DDISABLE_BRANCH_PROFILING
ccflags-y += -Wl,--no-undefined $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
-obj-y += vdso.o
-extra-y += vdso.lds
+obj-$(CONFIG_VDSO) += vdso.o
+extra-$(CONFIG_VDSO) += vdso.lds
CPPFLAGS_vdso.lds += -P -C -U$(ARCH)
CFLAGS_REMOVE_vdso.o = -pg