From a50964d036333a9bbd91b6ba439778fbe06859f1 Mon Sep 17 00:00:00 2001
From: Richard Wiley <rwiley@nvidia.com>
Date: Tue, 7 Aug 2012 10:42:51 -0700
Subject: kernel: add Kbuild option for kernel optimization level

Adds a kernel config option to lower the kernel compile optimization
level from O2 to O1 for clearer GDB debugging. Default on for simulation
builds, default off for others.

Change-Id: I17fd63b5b391984d28b275e516df89d6a223021c
Reviewed-on: http://git-master/r/121822
Reviewed-by: Chao Xu <cxu@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Ken Adams <kadams@nvidia.com>
Tested-by: Richard Wiley <rwiley@nvidia.com>
Reviewed-by: Mark Stadler <mastadler@nvidia.com>
Reviewed-by: Bo Yan <byan@nvidia.com>

Rebase-Id: Ra7c14ac91b0cfbe441dbfea33f0d5b1a6fd44d5f
---
 Makefile | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 4d6b136490b7..d2fe1a34e5e0 100644
--- a/Makefile
+++ b/Makefile
@@ -573,8 +573,12 @@ all: vmlinux
 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
 KBUILD_CFLAGS	+= -Os $(call cc-disable-warning,maybe-uninitialized,)
 else
+ifdef CONFIG_LESS_GCC_OPT
+KBUILD_CLFAGS	+= -O1
+else
 KBUILD_CFLAGS	+= -O2
 endif
+endif
 
 # conserve stack if available
 # do this early so that an architecture can override it.
-- 
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