From mboxrd@z Thu Jan 1 00:00:00 1970 From: Markus Mayer Subject: [PATCH 1/3] tools/thermal: tmon: use "-fstack-protector" only if supported Date: Wed, 27 Sep 2017 16:02:35 -0700 Message-ID: <20170927230237.62199-2-code@mmayer.net> References: <20170927230237.62199-1-code@mmayer.net> Return-path: In-Reply-To: <20170927230237.62199-1-code@mmayer.net> Sender: linux-kernel-owner@vger.kernel.org To: Zhang Rui Cc: Markus Mayer , Broadcom Kernel List , Power Management List , Linux Kernel Mailing List List-Id: linux-pm@vger.kernel.org From: Markus Mayer Most, but not all, toolchains support the "-fstack-protector" flag. We check if the compiler supports the flag before using it. This allows tmon to be compiled for more environments. Signed-off-by: Markus Mayer --- tools/thermal/tmon/Makefile | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/tools/thermal/tmon/Makefile b/tools/thermal/tmon/Makefile index 3a961e9..5777bc7 100644 --- a/tools/thermal/tmon/Makefile +++ b/tools/thermal/tmon/Makefile @@ -1,8 +1,13 @@ +# We need this for the "cc-option" macro. +include ../../../scripts/Kbuild.include + VERSION = 1.0 BINDIR=usr/bin WARNFLAGS=-Wall -Wshadow -W -Wformat -Wimplicit-function-declaration -Wimplicit-int -CFLAGS+= -O1 ${WARNFLAGS} -fstack-protector +CFLAGS+= -O1 ${WARNFLAGS} +# Add "-fstack-protector" only if toolchain supports it. +CFLAGS+= $(call cc-option,-fstack-protector) CC=$(CROSS_COMPILE)gcc CFLAGS+=-D VERSION=\"$(VERSION)\" -- 2.7.4