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
73 .if ${COMPILER_VERSION} > 30300
74 CWARNFLAGS+= -Wno-unused-const-variable
78 CWARNFLAGS+= -Wno-tautological-compare -Wno-unused-value\
79 -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion
82 CWARNFLAGS+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter
85 CWARNFLAGS+= -Wno-parentheses
87 .if defined(NO_WARRAY_BOUNDS)
88 CWARNFLAGS+= -Wno-array-bounds
89 .endif # NO_WARRAY_BOUNDS
93 .if defined(FORMAT_AUDIT)
98 #CWARNFLAGS+= -Wformat-nonliteral -Wformat-security -Wno-format-extra-args
99 CWARNFLAGS+= -Wformat=2 -Wno-format-extra-args
100 .if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD)
102 CWARNFLAGS+= -Wno-format-nonliteral
105 .if !defined(NO_WERROR) && (${COMPILER_TYPE} != "clang" \
106 || !defined(NO_WERROR.clang))
108 .endif # !NO_WERROR && (!CLANG || !NO_WERROR.clang)
111 .if defined(NO_WFORMAT) || (${COMPILER_TYPE} == "clang" && defined(NO_WFORMAT.clang))
112 CWARNFLAGS+= -Wno-format
113 .endif # NO_WFORMAT || (CLANG && NO_WFORMAT.clang)
116 .if defined(IGNORE_PRAGMA)
117 CWARNFLAGS+= -Wno-unknown-pragmas
118 .endif # IGNORE_PRAGMA
120 .if !defined(EARLY_BUILD)
121 .if ${COMPILER_TYPE} == "clang"
122 CLANG_NO_IAS= -no-integrated-as
123 CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\
124 -mllvm -enable-load-pre=false -mllvm -simplifycfg-dup-ret
125 CFLAGS+= -Qunused-arguments
126 .if ${MACHINE_CPUARCH} == "sparc64"
127 # Don't emit .cfi directives, since we must use GNU as on sparc64, for now.
128 CFLAGS+= -fno-dwarf2-cfi-asm
130 # The libc++ headers use c++11 extensions. These are normally silenced because
131 # they are treated as system headers, but we explicitly disable that warning
132 # suppression when building the base system to catch bugs in our headers.
133 # Eventually we'll want to start building the base system C++ code as C++11,
135 CXXFLAGS+= -Wno-c++11-extensions
136 CFLAGS+= ${CFLAGS.clang}
137 CXXFLAGS+= ${CXXFLAGS.clang}
139 GCC_MS_EXTENSIONS= -fms-extensions
140 CFLAGS+= ${CFLAGS.gcc}
141 CXXFLAGS+= ${CXXFLAGS.gcc}
143 .endif # !EARLY_BUILD
145 .if ${MK_SSP} != "no" && ${MACHINE_CPUARCH} != "ia64" && \
146 ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips"
147 # Don't use -Wstack-protector as it breaks world with -Werror.
148 SSP_CFLAGS?= -fstack-protector
149 CFLAGS+= ${SSP_CFLAGS}
150 .endif # SSP && !IA64 && !ARM && !MIPS
152 # Allow user-specified additional warning flags
153 CFLAGS+= ${CWARNFLAGS}
156 # Tell bmake not to mistake standard targets for things to be searched for
157 # or expect to ever be up-to-date.
158 PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \
159 beforelinking build build-tools buildfiles buildincludes \
160 checkdpadd clean cleandepend cleandir cleanobj configure \
161 depend dependall distclean distribute exe extract \
162 html includes install installfiles installincludes lint \
163 obj objlink objs objwarn realall realdepend \
164 realinstall regress subdir-all subdir-depend subdir-install \
167 .if defined(PORTNAME)
168 PHONY_NOTMAIN+= fetch patch
171 .PHONY: ${PHONY_NOTMAIN}
172 .NOTMAIN: ${PHONY_NOTMAIN}