# $FreeBSD: src/share/mk/bsd.kern.mk,v 1.17.2.1 2001/08/01 16:56:56 obrien Exp $

# Warning flags for compiling the kernel and components of the kernel.
#
# Note that -Werror is on by default. To turn it off, e.g. when working
# on adding new warning options, NO_WERROR in make.conf (or on make(1)'s
# command line) should be of material assistance.
#

CSTD?=		gnu11

CWARNFLAGS?=	-Wall -Wredundant-decls -Wnested-externs -Wstrict-prototypes \
		-Wmissing-prototypes -Wpointer-arith -Wcast-qual \
		-Wold-style-definition -Wmissing-include-dirs -Winit-self \
		-Wundef

_cnowarnflags=	-Wno-pointer-sign

_gccver=	0
.if ${CCVER:Mgcc*}
_gccver=	${CCVER:S/gcc//}
.endif

.if ${_gccver} > 0
CWARNFLAGS+=	-Wold-style-declaration
_cnowarnflags+=	-Wno-unused-but-set-variable
.endif
.if ${_gccver} >= 90
_cnowarnflags+=	-Wno-address-of-packed-member
.endif
.if ${_gccver} >= 100
_cnowarnflags+=	-Wno-zero-length-bounds
.endif

# Add -Wno-foo flags last
.if !defined(WARNS_AUDIT)
CWARNFLAGS+=	${_cnowarnflags}
.endif


# Require the proper use of 'extern' for variables.  -fno-common will
# cause duplicate declarations to generate a link error.
#
CFLAGS+=	-fno-common

# Prevent GCC 3.x from making certain libc based inline optimizations
#
CFLAGS+=	-ffreestanding

.include "../platform/${MACHINE_PLATFORM}/conf/kern.mk"