3 # This file contains common settings used for building FreeBSD
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.
9 # for GCC: http://gcc.gnu.org/onlinedocs/gcc-4.2.1/gcc/Warning-Options.html
11 .include <bsd.compiler.mk>
13 # the default is gnu99 for now
18 .elif ${CSTD} == "c89" || ${CSTD} == "c90"
19 CFLAGS+= -std=iso9899:1990
20 .elif ${CSTD} == "c94" || ${CSTD} == "c95"
21 CFLAGS+= -std=iso9899:199409
22 .elif ${CSTD} == "c99"
23 CFLAGS+= -std=iso9899:1999
27 .if !defined(NO_WARNS)
28 # -pedantic is problematic because it also imposes namespace restrictions
32 CWARNFLAGS+= -Wsystem-headers
33 .if !defined(NO_WERROR) && (${COMPILER_TYPE} != "clang" \
34 || !defined(NO_WERROR.clang))
36 .endif # !NO_WERROR && (!CLANG || !NO_WERROR.clang)
39 CWARNFLAGS+= -Wall -Wno-format-y2k
42 CWARNFLAGS+= -W -Wno-unused-parameter -Wstrict-prototypes\
43 -Wmissing-prototypes -Wpointer-arith
46 CWARNFLAGS+= -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow\
48 .if !defined(NO_WCAST_ALIGN) && (${COMPILER_TYPE} != "clang" \
49 || !defined(NO_WCAST_ALIGN.clang))
50 CWARNFLAGS+= -Wcast-align
51 .endif # !NO_WCAST_ALIGN && (!CLANG || !NO_WCAST_ALIGN.clang)
55 CWARNFLAGS+= -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls\
56 -Wold-style-definition
58 .if ${WARNS} >= 2 && ${WARNS} <= 4
59 # XXX Delete -Wuninitialized by default for now -- the compiler doesn't
60 # XXX always get it right.
61 CWARNFLAGS+= -Wno-uninitialized
62 .endif # WARNS >=2 && WARNS <= 4
63 CWARNFLAGS+= -Wno-pointer-sign
64 # Clang has more warnings enabled by default, and when using -Wall, so if WARNS
65 # is set to low values, these have to be disabled explicitly.
66 .if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD)
68 CWARNFLAGS+= -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable
71 CWARNFLAGS+= -Wno-tautological-compare -Wno-unused-value\
72 -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion
75 CWARNFLAGS+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter
78 CWARNFLAGS+= -Wno-parentheses
80 .if defined(NO_WARRAY_BOUNDS)
81 CWARNFLAGS+= -Wno-array-bounds
82 .endif # NO_WARRAY_BOUNDS
86 .if defined(FORMAT_AUDIT)
91 #CWARNFLAGS+= -Wformat-nonliteral -Wformat-security -Wno-format-extra-args
92 CWARNFLAGS+= -Wformat=2 -Wno-format-extra-args
93 .if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD)
95 CWARNFLAGS+= -Wno-format-nonliteral
98 .if !defined(NO_WERROR) && (${COMPILER_TYPE} != "clang" \
99 || !defined(NO_WERROR.clang))
101 .endif # !NO_WERROR && (!CLANG || !NO_WERROR.clang)
104 .if defined(NO_WFORMAT) || (${COMPILER_TYPE} == "clang" && defined(NO_WFORMAT.clang))
105 CWARNFLAGS+= -Wno-format
106 .endif # NO_WFORMAT || (CLANG && NO_WFORMAT.clang)
109 .if defined(IGNORE_PRAGMA)
110 CWARNFLAGS+= -Wno-unknown-pragmas
111 .endif # IGNORE_PRAGMA
113 .if !defined(EARLY_BUILD)
114 .if ${COMPILER_TYPE} == "clang"
115 CLANG_NO_IAS= -no-integrated-as
116 CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\
117 -mllvm -enable-load-pre=false -mllvm -simplifycfg-dup-ret
118 CFLAGS+= -Qunused-arguments
119 .if ${MACHINE_CPUARCH} == "sparc64"
120 # Don't emit .cfi directives, since we must use GNU as on sparc64, for now.
121 CFLAGS+= -fno-dwarf2-cfi-asm
123 # The libc++ headers use c++11 extensions. These are normally silenced because
124 # they are treated as system headers, but we explicitly disable that warning
125 # suppression when building the base system to catch bugs in our headers.
126 # Eventually we'll want to start building the base system C++ code as C++11,
128 CXXFLAGS+= -Wno-c++11-extensions
129 CFLAGS+= ${CFLAGS.clang}
130 CXXFLAGS+= ${CXXFLAGS.clang}
132 GCC_MS_EXTENSIONS= -fms-extensions
133 CFLAGS+= ${CFLAGS.gcc}
134 CXXFLAGS+= ${CXXFLAGS.gcc}
136 .endif # !EARLY_BUILD
138 .if ${MK_SSP} != "no" && ${MACHINE_CPUARCH} != "ia64" && \
139 ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips"
140 # Don't use -Wstack-protector as it breaks world with -Werror.
141 SSP_CFLAGS?= -fstack-protector
142 CFLAGS+= ${SSP_CFLAGS}
143 .endif # SSP && !IA64 && !ARM && !MIPS
145 # Allow user-specified additional warning flags
146 CFLAGS+= ${CWARNFLAGS}
149 # Tell bmake not to mistake standard targets for things to be searched for
150 # or expect to ever be up-to-date.
151 PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \
152 beforelinking build build-tools buildfiles buildincludes \
153 checkdpadd clean cleandepend cleandir cleanobj configure \
154 depend dependall distclean distribute exe extract fetch \
155 html includes install installfiles installincludes lint \
156 obj objlink objs objwarn patch realall realdepend \
157 realinstall regress subdir-all subdir-depend subdir-install \
160 .PHONY: ${PHONY_NOTMAIN}
161 .NOTMAIN: ${PHONY_NOTMAIN}