bsd.sys.mk revision 229087 
138032Speter# $FreeBSD: stable/9/share/mk/bsd.sys.mk 229087 2011-12-31 13:37:25Z dim $
238032Speter#
3261370Sgshapiro# This file contains common settings used for building FreeBSD
464562Sgshapiro# sources.
538032Speter
638032Speter# Enable various levels of compiler warning checks.  These may be
738032Speter# overridden (e.g. if using a non-gcc compiler) by defining NO_WARNS.
838032Speter
938032Speter# for GCC:  http://gcc.gnu.org/onlinedocs/gcc-3.0.4/gcc_3.html#IDX143
1038032Speter
1138032Speter# the default is gnu99 for now
1238032SpeterCSTD		?= gnu99
1338032Speter
1438032Speter.if ${CSTD} == "k&r"
1538032SpeterCFLAGS		+= -traditional
1680785Sgshapiro.elif ${CSTD} == "c89" || ${CSTD} == "c90"
1738032SpeterCFLAGS		+= -std=iso9899:1990
1838032Speter.elif ${CSTD} == "c94" || ${CSTD} == "c95"
1938032SpeterCFLAGS		+= -std=iso9899:199409
2038032Speter.elif ${CSTD} == "c99"
2138032SpeterCFLAGS		+= -std=iso9899:1999
2238032Speter.else
23266711SgshapiroCFLAGS		+= -std=${CSTD}
2438032Speter.endif
2538032Speter.if !defined(NO_WARNS)
2638032Speter# -pedantic is problematic because it also imposes namespace restrictions
2738032Speter#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 -Wunused-parameter
45.   if !defined(NO_WCAST_ALIGN)
46CWARNFLAGS	+=	-Wcast-align
47.   endif
48.  endif
49# BDECFLAGS
50.  if ${WARNS} >= 6
51CWARNFLAGS	+=	-Wchar-subscripts -Winline -Wnested-externs\
52			-Wredundant-decls -Wold-style-definition
53.  endif
54.  if ${WARNS} >= 2 && ${WARNS} <= 4
55# XXX Delete -Wuninitialized by default for now -- the compiler doesn't
56# XXX always get it right.
57CWARNFLAGS	+=	-Wno-uninitialized
58.  endif
59CWARNFLAGS	+=	-Wno-pointer-sign
60# Clang has more warnings enabled by default, and when using -Wall, so if WARNS
61# is set to low values, these have to be disabled explicitly.
62.  if ${CC:T:Mclang} == "clang"
63.   if ${WARNS} <= 3
64CWARNFLAGS	+=	-Wno-tautological-compare -Wno-unused-value\
65			-Wno-parentheses-equality -Wno-unused-function\
66			-Wno-conversion
67.   endif
68.   if ${WARNS} <= 2
69CWARNFLAGS	+=	-Wno-switch-enum -Wno-empty-body
70.   endif
71.   if ${WARNS} <= 1
72CWARNFLAGS	+=	-Wno-parentheses
73.   endif
74.   if defined(NO_WARRAY_BOUNDS)
75CWARNFLAGS	+=	-Wno-array-bounds
76.   endif
77.  endif
78. endif
79
80. if defined(FORMAT_AUDIT)
81WFORMAT		=	1
82. endif
83. if defined(WFORMAT)
84.  if ${WFORMAT} > 0
85#CWARNFLAGS	+=	-Wformat-nonliteral -Wformat-security -Wno-format-extra-args
86CWARNFLAGS	+=	-Wformat=2 -Wno-format-extra-args
87.   if !defined(NO_WERROR)
88CWARNFLAGS	+=	-Werror
89.   endif
90.  endif
91. endif
92. if defined(NO_WFORMAT)
93CWARNFLAGS	+=	-Wno-format
94. endif
95.endif
96
97.if defined(IGNORE_PRAGMA)
98CWARNFLAGS	+=	-Wno-unknown-pragmas
99.endif
100
101.if ${MK_SSP} != "no" && ${MACHINE_CPUARCH} != "ia64" && \
102    ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips"
103# Don't use -Wstack-protector as it breaks world with -Werror.
104SSP_CFLAGS	?=	-fstack-protector
105CFLAGS		+=	${SSP_CFLAGS}
106.endif
107
108# Allow user-specified additional warning flags
109CFLAGS		+=	${CWARNFLAGS}
110