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 MK_WARNS=no.
9 # for 4.2.1 GCC: http://gcc.gnu.org/onlinedocs/gcc-4.2.1/gcc/Warning-Options.html
10 # for current GCC: https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html
11 # for clang: https://clang.llvm.org/docs/DiagnosticsReference.html
13 .include <bsd.compiler.mk>
15 # the default is gnu99 for now
18 .if ${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
28 .if ${COMPILER_FEATURES:Mc++11}
30 .elif ${COMPILER_TYPE} == "gcc"
31 # Prior versions of g++ support C++98 with GNU extensions by default.
34 # Assume that the compiler supports at least C++98.
37 CXXFLAGS+= -std=${CXXSTD}
40 # -pedantic is problematic because it also imposes namespace restrictions
44 CWARNFLAGS+= -Wsystem-headers
45 .if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE})
47 .endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE}
50 CWARNFLAGS+= -Wall -Wno-format-y2k
53 CWARNFLAGS+= -W -Wno-unused-parameter -Wstrict-prototypes\
54 -Wmissing-prototypes -Wpointer-arith
57 CWARNFLAGS+= -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow\
59 .if !defined(NO_WCAST_ALIGN) && !defined(NO_WCAST_ALIGN.${COMPILER_TYPE})
60 CWARNFLAGS+= -Wcast-align
61 .endif # !NO_WCAST_ALIGN !NO_WCAST_ALIGN.${COMPILER_TYPE}
64 CWARNFLAGS+= -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls\
65 -Wold-style-definition
66 .if !defined(NO_WMISSING_VARIABLE_DECLARATIONS)
67 CWARNFLAGS.clang+= -Wmissing-variable-declarations
69 .if !defined(NO_WTHREAD_SAFETY)
70 CWARNFLAGS.clang+= -Wthread-safety
73 .if ${WARNS} >= 2 && ${WARNS} <= 4
74 # XXX Delete -Wuninitialized by default for now -- the compiler doesn't
75 # XXX always get it right.
76 CWARNFLAGS+= -Wno-uninitialized
77 .endif # WARNS >=2 && WARNS <= 4
78 CWARNFLAGS+= -Wno-pointer-sign
79 # Clang has more warnings enabled by default, and when using -Wall, so if WARNS
80 # is set to low values, these have to be disabled explicitly.
82 CWARNFLAGS.clang+= -Wno-empty-body -Wno-string-plus-int
83 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30400
84 CWARNFLAGS.clang+= -Wno-unused-const-variable
88 CWARNFLAGS.clang+= -Wno-tautological-compare -Wno-unused-value\
89 -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion
90 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30600
91 CWARNFLAGS.clang+= -Wno-unused-local-typedef
93 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 40000
94 CWARNFLAGS.clang+= -Wno-address-of-packed-member
96 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 70000 && \
97 ${MACHINE_CPUARCH} == "arm" && !${MACHINE_ARCH:Marmv[67]*}
98 CWARNFLAGS.clang+= -Wno-atomic-alignment
102 CWARNFLAGS.clang+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter
105 CWARNFLAGS.clang+= -Wno-parentheses
107 .if defined(NO_WARRAY_BOUNDS)
108 CWARNFLAGS.clang+= -Wno-array-bounds
109 .endif # NO_WARRAY_BOUNDS
112 .if defined(FORMAT_AUDIT)
114 .endif # FORMAT_AUDIT
117 #CWARNFLAGS+= -Wformat-nonliteral -Wformat-security -Wno-format-extra-args
118 CWARNFLAGS+= -Wformat=2 -Wno-format-extra-args
120 CWARNFLAGS.clang+= -Wno-format-nonliteral
122 .if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE})
124 .endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE}
127 .if defined(NO_WFORMAT) || defined(NO_WFORMAT.${COMPILER_TYPE})
128 CWARNFLAGS+= -Wno-format
129 .endif # NO_WFORMAT || NO_WFORMAT.${COMPILER_TYPE}
132 .if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 50200
133 CWARNFLAGS+= -Wno-error=address \
134 -Wno-error=array-bounds \
135 -Wno-error=attributes \
136 -Wno-error=bool-compare \
137 -Wno-error=cast-align \
138 -Wno-error=clobbered \
139 -Wno-error=enum-compare \
142 -Wno-error=logical-not-parentheses \
143 -Wno-error=strict-aliasing \
144 -Wno-error=uninitialized \
145 -Wno-error=unused-but-set-variable \
146 -Wno-error=unused-function \
147 -Wno-error=unused-value
151 .if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 60100
152 CWARNFLAGS+= -Wno-error=misleading-indentation \
153 -Wno-error=nonnull-compare \
154 -Wno-error=shift-negative-value \
155 -Wno-error=tautological-compare \
156 -Wno-error=unused-const-variable
160 .if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 70100
161 CWARNFLAGS+= -Wno-error=bool-operation \
162 -Wno-error=deprecated \
163 -Wno-error=expansion-to-defined \
164 -Wno-error=format-overflow \
165 -Wno-error=format-truncation \
166 -Wno-error=implicit-fallthrough \
167 -Wno-error=int-in-bool-context \
168 -Wno-error=memset-elt-size \
169 -Wno-error=noexcept-type \
171 -Wno-error=pointer-compare \
172 -Wno-error=stringop-overflow
176 .if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100
177 CWARNFLAGS+= -Wno-error=aggressive-loop-optimizations \
178 -Wno-error=cast-function-type \
179 -Wno-error=catch-value \
180 -Wno-error=multistatement-macros \
181 -Wno-error=restrict \
182 -Wno-error=sizeof-pointer-memaccess \
183 -Wno-error=stringop-truncation
186 # How to handle FreeBSD custom printf format specifiers.
187 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30600
188 FORMAT_EXTENSIONS= -D__printf__=__freebsd_kprintf__
190 FORMAT_EXTENSIONS= -fformat-extensions
193 .if defined(IGNORE_PRAGMA)
194 CWARNFLAGS+= -Wno-unknown-pragmas
195 .endif # IGNORE_PRAGMA
197 # We need this conditional because many places that use it
198 # only enable it for some files with CLFAGS.$FILE+=${CLANG_NO_IAS}.
199 # unconditionally, and can't easily use the CFLAGS.clang=
201 .if ${COMPILER_TYPE} == "clang"
202 CLANG_NO_IAS= -no-integrated-as
204 CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\
205 -mllvm -simplifycfg-dup-ret
206 .if ${COMPILER_VERSION} >= 30500 && ${COMPILER_VERSION} < 30700
207 CLANG_OPT_SMALL+= -mllvm -enable-gvn=false
209 CLANG_OPT_SMALL+= -mllvm -enable-load-pre=false
211 CFLAGS.clang+= -Qunused-arguments
212 .if ${MACHINE_CPUARCH} == "sparc64"
213 # Don't emit .cfi directives, since we must use GNU as on sparc64, for now.
214 CFLAGS.clang+= -fno-dwarf2-cfi-asm
216 # The libc++ headers use c++11 extensions. These are normally silenced because
217 # they are treated as system headers, but we explicitly disable that warning
218 # suppression when building the base system to catch bugs in our headers.
219 # Eventually we'll want to start building the base system C++ code as C++11,
221 CXXFLAGS.clang+= -Wno-c++11-extensions
223 .if ${MK_SSP} != "no" && \
224 ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips"
225 .if (${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30500) || \
226 (${COMPILER_TYPE} == "gcc" && \
227 (${COMPILER_VERSION} == 40201 || ${COMPILER_VERSION} >= 40900))
228 # Don't use -Wstack-protector as it breaks world with -Werror.
229 SSP_CFLAGS?= -fstack-protector-strong
231 SSP_CFLAGS?= -fstack-protector
233 CFLAGS+= ${SSP_CFLAGS}
234 .endif # SSP && !ARM && !MIPS
236 # Additional flags passed in CFLAGS and CXXFLAGS when MK_DEBUG_FILES is
238 DEBUG_FILES_CFLAGS?= -g
240 # Allow user-specified additional warning flags, plus compiler and file
241 # specific flag overrides, unless we've overridden this...
242 .if ${MK_WARNS} != "no"
243 CFLAGS+= ${CWARNFLAGS:M*} ${CWARNFLAGS.${COMPILER_TYPE}}
244 CFLAGS+= ${CWARNFLAGS.${.IMPSRC:T}}
247 CFLAGS+= ${CFLAGS.${COMPILER_TYPE}}
248 CXXFLAGS+= ${CXXFLAGS.${COMPILER_TYPE}}
250 AFLAGS+= ${AFLAGS.${.IMPSRC:T}}
251 ACFLAGS+= ${ACFLAGS.${.IMPSRC:T}}
252 CFLAGS+= ${CFLAGS.${.IMPSRC:T}}
253 CXXFLAGS+= ${CXXFLAGS.${.IMPSRC:T}}
255 LDFLAGS+= ${LDFLAGS.${LINKER_TYPE}}
258 # Prevent rebuilding during install to support read-only objdirs.
259 .if ${.TARGETS:M*install*} == ${.TARGETS} && empty(.MAKE.MODE:Mmeta)
260 CFLAGS+= ERROR-tried-to-rebuild-during-make-install
264 # Tell bmake not to mistake standard targets for things to be searched for
265 # or expect to ever be up-to-date.
266 PHONY_NOTMAIN = analyze afterdepend afterinstall all beforedepend beforeinstall \
267 beforelinking build build-tools buildconfig buildfiles \
268 buildincludes check checkdpadd clean cleandepend cleandir \
269 cleanobj configure depend distclean distribute exe \
270 files html includes install installconfig installdirs \
271 installfiles installincludes lint obj objlink objs objwarn \
272 realinstall tags whereobj
274 # we don't want ${PROG} to be PHONY
275 .PHONY: ${PHONY_NOTMAIN:N${PROG:U}}
276 .NOTMAIN: ${PHONY_NOTMAIN:Nall}
278 .if ${MK_STAGING} != "no"
279 .if defined(_SKIP_BUILD) || (!make(all) && !make(clean*))
282 .if ${_SKIP_STAGING:Uno} == "yes"
283 staging stage_libs stage_files stage_as stage_links stage_symlinks:
285 # allow targets like beforeinstall to be leveraged
286 DESTDIR= ${STAGE_OBJTOP}
289 .if target(beforeinstall)
290 .if !empty(_LIBS) || (${MK_STAGING_PROG} != "no" && !defined(INTERNALPROG))
291 staging: beforeinstall
295 # normally only libs and includes are staged
296 .if ${MK_STAGING_PROG} != "no" && !defined(INTERNALPROG)
297 STAGE_DIR.prog= ${STAGE_OBJTOP}${BINDIR}
300 .if defined(PROGNAME)
302 STAGE_AS_${PROG}= ${PROGNAME}
303 stage_as.prog: ${PROG}
306 stage_files.prog: ${PROG}
307 STAGE_TARGETS+= stage_files
312 .if !empty(_LIBS) && !defined(INTERNALLIB)
313 .if defined(SHLIBDIR) && ${SHLIBDIR} != ${LIBDIR} && ${_LIBS:Uno:M*.so.*} != ""
315 STAGE_DIR.shlib= ${STAGE_OBJTOP}${SHLIBDIR}
316 STAGE_FILES.shlib+= ${_LIBS:M*.so.*}
317 stage_files.shlib: ${_LIBS:M*.so.*}
320 .if defined(SHLIB_LINK) && commands(${SHLIB_LINK:R}.ld)
321 STAGE_AS_SETS+= ldscript
322 STAGE_AS.ldscript+= ${SHLIB_LINK:R}.ld
323 stage_as.ldscript: ${SHLIB_LINK:R}.ld
324 STAGE_DIR.ldscript = ${STAGE_LIBDIR}
325 STAGE_AS_${SHLIB_LINK:R}.ld:= ${SHLIB_LINK}
329 .if target(stage_files.shlib)
331 .if defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols)
332 stage_files.shlib: ${SHLIB_NAME}.symbols
337 .if defined(SHLIB_NAME) && defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols)
338 stage_libs: ${SHLIB_NAME}.symbols
343 .if !empty(INCS) || !empty(INCSGROUPS) && target(buildincludes)
344 .if !defined(NO_BEFOREBUILD_INCLUDES)
345 stage_includes: buildincludes
346 beforebuild: stage_includes
350 .for t in stage_libs stage_files stage_as
356 .if !empty(STAGE_AS_SETS)
357 STAGE_TARGETS+= stage_as
360 .if !empty(STAGE_TARGETS) || (${MK_STAGING_PROG} != "no" && !defined(INTERNALPROG))
363 STAGE_TARGETS+= stage_links
364 .if ${MAKE_VERSION} < 20131001
365 stage_links.links: ${_LIBS} ${PROG}
368 STAGE_LINKS.links= ${LINKS}
372 STAGE_TARGETS+= stage_symlinks
374 STAGE_SYMLINKS.links= ${SYMLINKS}
379 .include <meta.stage.mk>
383 .if defined(META_TARGETS)
384 .for _tgt in ${META_TARGETS}
386 ${_tgt}: ${META_DEPS}