bsd.sys.mk revision 189801 
1# $FreeBSD: head/share/mk/bsd.sys.mk 189801 2009-03-14 17:55:16Z rdivacky $
2#
3# This file contains common settings used for building FreeBSD
4# sources.
5
6# Enable various levels of compiler warning checks.  These may be
7# overridden (e.g. if using a non-gcc compiler) by defining NO_WARNS.
8
9# for GCC:  http://gcc.gnu.org/onlinedocs/gcc-3.0.4/gcc_3.html#IDX143
10
11# the default is gnu99 for now
12CSTD		?= gnu99
13
14.if !defined(NO_WARNS) && ${CC} != "icc"
15. if ${CSTD} == "k&r"
16CFLAGS		+= -traditional
17. elif ${CSTD} == "c89" || ${CSTD} == "c90"
18CFLAGS		+= -std=iso9899:1990
19. elif ${CSTD} == "c94" || ${CSTD} == "c95"
20CFLAGS		+= -std=iso9899:199409
21. elif ${CSTD} == "c99"
22CFLAGS		+= -std=iso9899:1999
23. else
24CFLAGS		+= -std=${CSTD}
25. endif
26# -pedantic is problematic because it also imposes namespace restrictions
27#CFLAGS		+= -pedantic
28. if defined(WARNS)
29.  if ${WARNS} >= 1
30CWARNFLAGS	+=	-Wsystem-headers
31.   if !defined(NO_WERROR)
32CWARNFLAGS	+=	-Werror
33.   endif
34.  endif
35.  if ${WARNS} >= 2
36CWARNFLAGS	+=	-Wall -Wno-format-y2k
37.  endif
38.  if ${WARNS} >= 3
39CWARNFLAGS	+=	-W -Wno-unused-parameter -Wstrict-prototypes\
40			-Wmissing-prototypes -Wpointer-arith
41.  endif
42.  if ${WARNS} >= 4
43CWARNFLAGS	+=	-Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch\
44			-Wshadow -Wcast-align -Wunused-parameter
45.  endif
46# BDECFLAGS
47.  if ${WARNS} >= 6
48CWARNFLAGS	+=	-Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls
49.  endif
50.  if ${WARNS} >= 2 && ${WARNS} <= 4
51# XXX Delete -Wuninitialized by default for now -- the compiler doesn't
52# XXX always get it right.
53CWARNFLAGS	+=	-Wno-uninitialized
54.  endif
55.  if !defined(WITH_GCC3)
56CWARNFLAGS	+=	-Wno-pointer-sign
57.  endif
58. endif
59
60. if defined(FORMAT_AUDIT)
61WFORMAT		=	1
62. endif
63. if defined(WFORMAT)
64.  if ${WFORMAT} > 0
65#CWARNFLAGS	+=	-Wformat-nonliteral -Wformat-security -Wno-format-extra-args
66CWARNFLAGS	+=	-Wformat=2 -Wno-format-extra-args
67.   if !defined(NO_WERROR)
68CWARNFLAGS	+=	-Werror
69.   endif
70.  endif
71. endif
72.endif
73
74.if defined(IGNORE_PRAGMA)
75CWARNFLAGS	+=	-Wno-unknown-pragmas
76.endif
77
78.if ${MK_SSP} != "no" && ${CC} != "icc" && ${MACHINE_ARCH} != "ia64" && \
79	${MACHINE_ARCH} != "arm" && ${MACHINE_ARCH} != "mips"
80# Don't use -Wstack-protector as it breaks world with -Werror.
81SSP_CFLAGS	?=	-fstack-protector
82CFLAGS		+=	${SSP_CFLAGS}
83.endif
84
85# Allow user-specified additional warning flags
86CFLAGS		+=	${CWARNFLAGS}
87