linux-kernel - [PATCH 4.1 32/78] ARM: 8385/1: VDSO: group link options

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Date:	Fri, 11 Sep 2015 15:49:33 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Nathan Lynch <nathan_lynch@...tor.com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Alexander Kochetkov <al.kochet@...il.com>
Subject: [PATCH 4.1 32/78] ARM: 8385/1: VDSO: group link options

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nathan Lynch <nathan_lynch@...tor.com>

commit d33ce23b2160d26b27a47092da5d556b5b11a12a upstream.

Currently the VDSO's link options are kind of a mess spread between

ccflags-y and cmd_vdsold.  Collect linker directives into one
variable, VDSO_LDFLAGS, and use that in cmd_vdsold.

Signed-off-by: Nathan Lynch <nathan_lynch@...tor.com>
Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
Cc: Alexander Kochetkov <al.kochet@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/vdso/Makefile |   17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

--- a/arch/arm/vdso/Makefile
+++ b/arch/arm/vdso/Makefile
@@ -6,9 +6,14 @@ obj-vdso := vgettimeofday.o datapage.o
 targets := $(obj-vdso) vdso.so vdso.so.dbg vdso.so.raw vdso.lds
 obj-vdso := $(addprefix $(obj)/, $(obj-vdso))
 
-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)
+ccflags-y := -fPIC -fno-common -fno-builtin -fno-stack-protector
+ccflags-y += -DDISABLE_BRANCH_PROFILING
+
+VDSO_LDFLAGS := -Wl,-Bsymbolic -Wl,--no-undefined -Wl,-soname=linux-vdso.so.1
+VDSO_LDFLAGS += -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
+VDSO_LDFLAGS += -nostdlib -shared
+VDSO_LDFLAGS += $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
+VDSO_LDFLAGS += $(call cc-ldoption, -Wl$(comma)--build-id)
 
 obj-$(CONFIG_VDSO) += vdso.o
 extra-$(CONFIG_VDSO) += vdso.lds
@@ -40,10 +45,8 @@ $(obj)/%.so: $(obj)/%.so.dbg FORCE
 
 # Actual build commands
 quiet_cmd_vdsold = VDSO    $@
-      cmd_vdsold = $(CC) $(c_flags) -Wl,-T $(filter %.lds,$^) $(filter %.o,$^) \
-                   $(call cc-ldoption, -Wl$(comma)--build-id) \
-                   -Wl,-Bsymbolic -Wl,-z,max-page-size=4096 \
-                   -Wl,-z,common-page-size=4096 -o $@
+      cmd_vdsold = $(CC) $(c_flags) $(VDSO_LDFLAGS) \
+                   -Wl,-T $(filter %.lds,$^) $(filter %.o,$^) -o $@
 
 quiet_cmd_vdsomunge = MUNGE   $@
       cmd_vdsomunge = $(objtree)/$(obj)/vdsomunge $< $@


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