bsd.sys.mk revision 189801 
176861Skris# $FreeBSD: head/share/mk/bsd.sys.mk 189801 2009-03-14 17:55:16Z rdivacky $
276861Skris#
376861Skris# This file contains common settings used for building FreeBSD
476861Skris# sources.
576861Skris
676861Skris# Enable various levels of compiler warning checks.  These may be
776861Skris# overridden (e.g. if using a non-gcc compiler) by defining NO_WARNS.
876861Skris
996316Sobrien# for GCC:  http://gcc.gnu.org/onlinedocs/gcc-3.0.4/gcc_3.html#IDX143
1096316Sobrien
11189801Srdivacky# the default is gnu99 for now
12189801SrdivackyCSTD		?= gnu99
13189801Srdivacky
14126890Strhodes.if !defined(NO_WARNS) && ${CC} != "icc"
15189801Srdivacky. if ${CSTD} == "k&r"
16161214SdesCFLAGS		+= -traditional
17189801Srdivacky. elif ${CSTD} == "c89" || ${CSTD} == "c90"
18161214SdesCFLAGS		+= -std=iso9899:1990
19189801Srdivacky. elif ${CSTD} == "c94" || ${CSTD} == "c95"
20161214SdesCFLAGS		+= -std=iso9899:199409
21189801Srdivacky. elif ${CSTD} == "c99"
22161214SdesCFLAGS		+= -std=iso9899:1999
23189801Srdivacky. else
24161214SdesCFLAGS		+= -std=${CSTD}
25189801Srdivacky. endif
26161214Sdes# -pedantic is problematic because it also imposes namespace restrictions
27161214Sdes#CFLAGS		+= -pedantic
2876861Skris. if defined(WARNS)
29140359Sobrien.  if ${WARNS} >= 1
30124372SruCWARNFLAGS	+=	-Wsystem-headers
3199542Sobrien.   if !defined(NO_WERROR)
32124372SruCWARNFLAGS	+=	-Werror
3399542Sobrien.   endif
3476861Skris.  endif
35140359Sobrien.  if ${WARNS} >= 2
36124372SruCWARNFLAGS	+=	-Wall -Wno-format-y2k
3776861Skris.  endif
38140359Sobrien.  if ${WARNS} >= 3
39140361SobrienCWARNFLAGS	+=	-W -Wno-unused-parameter -Wstrict-prototypes\
40140361Sobrien			-Wmissing-prototypes -Wpointer-arith
4187976Sobrien.  endif
42140359Sobrien.  if ${WARNS} >= 4
43140361SobrienCWARNFLAGS	+=	-Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch\
44140361Sobrien			-Wshadow -Wcast-align -Wunused-parameter
4587976Sobrien.  endif
4694332Sobrien# BDECFLAGS
47140359Sobrien.  if ${WARNS} >= 6
48125884SdesCWARNFLAGS	+=	-Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls
4994332Sobrien.  endif
50140359Sobrien.  if ${WARNS} >= 2 && ${WARNS} <= 4
5188936Sdwmalone# XXX Delete -Wuninitialized by default for now -- the compiler doesn't
5288936Sdwmalone# XXX always get it right.
53124372SruCWARNFLAGS	+=	-Wno-uninitialized
5488936Sdwmalone.  endif
55169961Sobrien.  if !defined(WITH_GCC3)
56169723SkanCWARNFLAGS	+=	-Wno-pointer-sign
57169961Sobrien.  endif
5876861Skris. endif
5976861Skris
6076861Skris. if defined(FORMAT_AUDIT)
6176861SkrisWFORMAT		=	1
6276861Skris. endif
6376861Skris. if defined(WFORMAT)
6476861Skris.  if ${WFORMAT} > 0
65124372Sru#CWARNFLAGS	+=	-Wformat-nonliteral -Wformat-security -Wno-format-extra-args
66124372SruCWARNFLAGS	+=	-Wformat=2 -Wno-format-extra-args
6799542Sobrien.   if !defined(NO_WERROR)
68124372SruCWARNFLAGS	+=	-Werror
6999542Sobrien.   endif
7076861Skris.  endif
7176861Skris. endif
7276861Skris.endif
7376861Skris
74163971Sjb.if defined(IGNORE_PRAGMA)
75163971SjbCWARNFLAGS	+=	-Wno-unknown-pragmas
76163971Sjb.endif
77163971Sjb
78180605Scognet.if ${MK_SSP} != "no" && ${CC} != "icc" && ${MACHINE_ARCH} != "ia64" && \
79180731Simp	${MACHINE_ARCH} != "arm" && ${MACHINE_ARCH} != "mips"
80180012Sru# Don't use -Wstack-protector as it breaks world with -Werror.
81180012SruSSP_CFLAGS	?=	-fstack-protector
82180012SruCFLAGS		+=	${SSP_CFLAGS}
83180012Sru.endif
84180012Sru
8576861Skris# Allow user-specified additional warning flags
8676861SkrisCFLAGS		+=	${CWARNFLAGS}
87