From 8979260098e5f727b88679b0473f3485391b9d16 Mon Sep 17 00:00:00 2001 From: Chenglu Lin Date: Mon, 23 Sep 2019 13:15:50 +0800 Subject: [PATCH] kernel: Add CC_WERROR config to turn warnings into errors Add configuration option CONFIG_CC_WERROR to prevent warnings from creeping in. Bug: 141372918 Change-Id: Ie2d067c0177d8f13e9aaa9a78867998e390f89ee Signed-off-by: Chenglu Lin --- Makefile | 4 ++++ lib/Kconfig.debug | 10 ++++++++++ 2 files changed, 14 insertions(+) diff --git a/Makefile b/Makefile index d8759961f404..30be8d6a20c9 100644 --- a/Makefile +++ b/Makefile @@ -702,6 +702,10 @@ else KBUILD_CFLAGS += -O2 endif +ifdef CONFIG_CC_WERROR +KBUILD_CFLAGS += -Werror +endif + # Tell gcc to never replace conditional load with a non-conditional one KBUILD_CFLAGS += $(call cc-option,--param=allow-store-data-races=0) KBUILD_CFLAGS += $(call cc-option,-fno-allow-store-data-races) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index da9e8f42319e..41ec11b477e7 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -2118,6 +2118,16 @@ config PANIC_ON_DATA_CORRUPTION recoverable data corruption scenarios to system-halting panics, for easier detection and debug. +config CC_WERROR + bool "Treat all compile warnings as errors" + default n + help + Select this option to set compiler warnings as errors, + to prevent easily-fixable problems from creeping into + the codebase. + + If unsure, say N. + source "samples/Kconfig" source "lib/Kconfig.kgdb"