kernel: Add CC_WERROR config to turn warnings into errors

Add configuration option CONFIG_CC_WERROR to prevent warnings from creeping in. Bug: 67861121 Change-Id: I8cd2123d2c569ea6c6ab7f74ed6ca67976e9af3a Signed-off-by: Chris Fries <[email protected]>
ShapeShiftOS-Devices · Apr 1, 2022 · 287337b · 287337b
1 parent 87a4553
commit 287337b
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diff --git a/Makefile b/Makefile
@@ -737,6 +737,10 @@ 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
@@ -2110,6 +2110,16 @@ config BUG_ON_DATA_CORRUPTION
 
 	  If unsure, say N.
 
+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"