[tip:x86/urgent] x86/build: Permit building with old make versions

[tip-bot for Jan Kiszka]

Commit-ID:  7e6091209f7f73e2a81943020793b5ad26d645c6
Gitweb:     http://git.kernel.org/tip/7e6091209f7f73e2a81943020793b5ad26d645c6
Author:     Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
AuthorDate: Tue, 23 May 2017 18:27:54 +0200
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Wed, 24 May 2017 09:05:17 +0200

x86/build: Permit building with old make versions

At least Make 3.82 dislikes the tab in front of the $(warning) function:

  arch/x86/Makefile:162: *** recipe commences before first target.  Stop.

Let's be gentle.

Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
Acked-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1944fcd8-e3df-d1f7-c0e4-60aeb1917a24@xxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 arch/x86/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 5851411..bf240b9 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -159,7 +159,7 @@ ifdef CONFIG_FUNCTION_GRAPH_TRACER
 	# If '-Os' is enabled, disable it and print a warning.
         ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
           undefine CONFIG_CC_OPTIMIZE_FOR_SIZE
-	  $(warning Disabling CONFIG_CC_OPTIMIZE_FOR_SIZE.  Your compiler does not have -mfentry so you cannot optimize for size with CONFIG_FUNCTION_GRAPH_TRACER.)
+          $(warning Disabling CONFIG_CC_OPTIMIZE_FOR_SIZE.  Your compiler does not have -mfentry so you cannot optimize for size with CONFIG_FUNCTION_GRAPH_TRACER.)
         endif
 
     endif