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
57 .if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD) && \
58 !defined(NO_WMISSING_VARIABLE_DECLARATIONS)
59 CWARNFLAGS+= -Wmissing-variable-declarations
62 .if ${WARNS} >= 2 && ${WARNS} <= 4
63 # XXX Delete -Wuninitialized by default for now -- the compiler doesn't
64 # XXX always get it right.
65 CWARNFLAGS+= -Wno-uninitialized
66 .endif # WARNS >=2 && WARNS <= 4
67 CWARNFLAGS+= -Wno-pointer-sign
68 # Clang has more warnings enabled by default, and when using -Wall, so if WARNS
69 # is set to low values, these have to be disabled explicitly.
70 .if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD)
72 CWARNFLAGS+= -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable
75 CWARNFLAGS+= -Wno-tautological-compare -Wno-unused-value\
76 -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion
79 CWARNFLAGS+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter
82 CWARNFLAGS+= -Wno-parentheses
84 .if defined(NO_WARRAY_BOUNDS)
85 CWARNFLAGS+= -Wno-array-bounds
86 .endif # NO_WARRAY_BOUNDS
90 .if defined(FORMAT_AUDIT)
95 #CWARNFLAGS+= -Wformat-nonliteral -Wformat-security -Wno-format-extra-args
96 CWARNFLAGS+= -Wformat=2 -Wno-format-extra-args
97 .if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD)
99 CWARNFLAGS+= -Wno-format-nonliteral
102 .if !defined(NO_WERROR) && (${COMPILER_TYPE} != "clang" \
103 || !defined(NO_WERROR.clang))
105 .endif # !NO_WERROR && (!CLANG || !NO_WERROR.clang)
108 .if defined(NO_WFORMAT) || (${COMPILER_TYPE} == "clang" && defined(NO_WFORMAT.clang))
109 CWARNFLAGS+= -Wno-format
110 .endif # NO_WFORMAT || (CLANG && NO_WFORMAT.clang)
113 .if defined(IGNORE_PRAGMA)
114 CWARNFLAGS+= -Wno-unknown-pragmas
115 .endif # IGNORE_PRAGMA
117 .if !defined(EARLY_BUILD)
118 .if ${COMPILER_TYPE} == "clang"
119 CLANG_NO_IAS= -no-integrated-as
120 CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\
121 -mllvm -enable-load-pre=false -mllvm -simplifycfg-dup-ret
122 CFLAGS+= -Qunused-arguments
123 .if ${MACHINE_CPUARCH} == "sparc64"
124 # Don't emit .cfi directives, since we must use GNU as on sparc64, for now.
125 CFLAGS+= -fno-dwarf2-cfi-asm
127 # The libc++ headers use c++11 extensions. These are normally silenced because
128 # they are treated as system headers, but we explicitly disable that warning
129 # suppression when building the base system to catch bugs in our headers.
130 # Eventually we'll want to start building the base system C++ code as C++11,
132 CXXFLAGS+= -Wno-c++11-extensions
133 CFLAGS+= ${CFLAGS.clang}
134 CXXFLAGS+= ${CXXFLAGS.clang}
136 GCC_MS_EXTENSIONS= -fms-extensions
137 CFLAGS+= ${CFLAGS.gcc}
138 CXXFLAGS+= ${CXXFLAGS.gcc}
140 .endif # !EARLY_BUILD
142 .if ${MK_SSP} != "no" && ${MACHINE_CPUARCH} != "ia64" && \
143 ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips"
144 # Don't use -Wstack-protector as it breaks world with -Werror.
145 SSP_CFLAGS?= -fstack-protector
146 CFLAGS+= ${SSP_CFLAGS}
147 .endif # SSP && !IA64 && !ARM && !MIPS
149 # Allow user-specified additional warning flags
150 CFLAGS+= ${CWARNFLAGS}
153 # Tell bmake not to mistake standard targets for things to be searched for
154 # or expect to ever be up-to-date.
155 PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \
156 beforelinking build build-tools buildfiles buildincludes \
157 checkdpadd clean cleandepend cleandir cleanobj configure \
158 depend dependall distclean distribute exe extract \
159 html includes install installfiles installincludes lint \
160 obj objlink objs objwarn realall realdepend \
161 realinstall regress subdir-all subdir-depend subdir-install \
164 .if defined(PORTNAME)
165 PHONY_NOTMAIN+= fetch patch
168 .PHONY: ${PHONY_NOTMAIN}
169 .NOTMAIN: ${PHONY_NOTMAIN}