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 ${CSTD} == "c99"
23 CFLAGS+= -std=iso9899:1999
27 # -pedantic is problematic because it also imposes namespace restrictions
31 CWARNFLAGS+= -Wsystem-headers
32 .if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE})
34 .endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE}
37 CWARNFLAGS+= -Wall -Wno-format-y2k
40 CWARNFLAGS+= -W -Wno-unused-parameter -Wstrict-prototypes\
41 -Wmissing-prototypes -Wpointer-arith
44 CWARNFLAGS+= -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow\
46 .if !defined(NO_WCAST_ALIGN) && !defined(NO_WCAST_ALIGN.${COMPILER_TYPE})
47 CWARNFLAGS+= -Wcast-align
48 .endif # !NO_WCAST_ALIGN !NO_WCAST_ALIGN.${COMPILER_TYPE}
51 CWARNFLAGS+= -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls\
52 -Wold-style-definition
53 .if !defined(NO_WMISSING_VARIABLE_DECLARATIONS)
54 CWARNFLAGS.clang+= -Wmissing-variable-declarations
56 .if !defined(NO_WTHREAD_SAFETY)
57 CWARNFLAGS.clang+= -Wthread-safety
60 .if ${WARNS} >= 2 && ${WARNS} <= 4
61 # XXX Delete -Wuninitialized by default for now -- the compiler doesn't
62 # XXX always get it right.
63 CWARNFLAGS+= -Wno-uninitialized
64 .endif # WARNS >=2 && WARNS <= 4
65 CWARNFLAGS+= -Wno-pointer-sign
66 # Clang has more warnings enabled by default, and when using -Wall, so if WARNS
67 # is set to low values, these have to be disabled explicitly.
69 CWARNFLAGS.clang+= -Wno-empty-body -Wno-string-plus-int
70 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30400
71 CWARNFLAGS.clang+= -Wno-unused-const-variable
75 CWARNFLAGS.clang+= -Wno-tautological-compare -Wno-unused-value\
76 -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion
77 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30600
78 CWARNFLAGS.clang+= -Wno-unused-local-typedef
80 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 40000
81 CWARNFLAGS.clang+= -Wno-address-of-packed-member
83 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 70000 && \
84 ${MACHINE_CPUARCH} == "arm" && !${MACHINE_ARCH:Marmv[67]*}
85 CWARNFLAGS.clang+= -Wno-atomic-alignment
89 CWARNFLAGS.clang+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter
92 CWARNFLAGS.clang+= -Wno-parentheses
94 .if defined(NO_WARRAY_BOUNDS)
95 CWARNFLAGS.clang+= -Wno-array-bounds
96 .endif # NO_WARRAY_BOUNDS
99 .if defined(FORMAT_AUDIT)
101 .endif # FORMAT_AUDIT
104 #CWARNFLAGS+= -Wformat-nonliteral -Wformat-security -Wno-format-extra-args
105 CWARNFLAGS+= -Wformat=2 -Wno-format-extra-args
107 CWARNFLAGS.clang+= -Wno-format-nonliteral
109 .if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE})
111 .endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE}
114 .if defined(NO_WFORMAT) || defined(NO_WFORMAT.${COMPILER_TYPE})
115 CWARNFLAGS+= -Wno-format
116 .endif # NO_WFORMAT || NO_WFORMAT.${COMPILER_TYPE}
119 .if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 50200
120 CWARNFLAGS+= -Wno-error=address \
121 -Wno-error=array-bounds \
122 -Wno-error=attributes \
123 -Wno-error=bool-compare \
124 -Wno-error=cast-align \
125 -Wno-error=clobbered \
126 -Wno-error=enum-compare \
129 -Wno-error=logical-not-parentheses \
130 -Wno-error=strict-aliasing \
131 -Wno-error=uninitialized \
132 -Wno-error=unused-but-set-variable \
133 -Wno-error=unused-function \
134 -Wno-error=unused-value
138 .if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 60100
139 CWARNFLAGS+= -Wno-error=misleading-indentation \
140 -Wno-error=nonnull-compare \
141 -Wno-error=shift-negative-value \
142 -Wno-error=tautological-compare \
143 -Wno-error=unused-const-variable
147 .if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 70100
148 CWARNFLAGS+= -Wno-error=bool-operation \
149 -Wno-error=deprecated \
150 -Wno-error=expansion-to-defined \
151 -Wno-error=format-overflow \
152 -Wno-error=format-truncation \
153 -Wno-error=implicit-fallthrough \
154 -Wno-error=int-in-bool-context \
155 -Wno-error=memset-elt-size \
156 -Wno-error=noexcept-type \
158 -Wno-error=pointer-compare \
159 -Wno-error=stringop-overflow
163 .if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 80100
164 CWARNFLAGS+= -Wno-error=aggressive-loop-optimizations \
165 -Wno-error=cast-function-type \
166 -Wno-error=catch-value \
167 -Wno-error=multistatement-macros \
168 -Wno-error=restrict \
169 -Wno-error=sizeof-pointer-memaccess \
170 -Wno-error=stringop-truncation
173 # How to handle FreeBSD custom printf format specifiers.
174 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30600
175 FORMAT_EXTENSIONS= -D__printf__=__freebsd_kprintf__
177 FORMAT_EXTENSIONS= -fformat-extensions
180 .if defined(IGNORE_PRAGMA)
181 CWARNFLAGS+= -Wno-unknown-pragmas
182 .endif # IGNORE_PRAGMA
184 # We need this conditional because many places that use it
185 # only enable it for some files with CLFAGS.$FILE+=${CLANG_NO_IAS}.
186 # unconditionally, and can't easily use the CFLAGS.clang=
188 .if ${COMPILER_TYPE} == "clang"
189 CLANG_NO_IAS= -no-integrated-as
191 CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\
192 -mllvm -simplifycfg-dup-ret
193 .if ${COMPILER_VERSION} >= 30500 && ${COMPILER_VERSION} < 30700
194 CLANG_OPT_SMALL+= -mllvm -enable-gvn=false
196 CLANG_OPT_SMALL+= -mllvm -enable-load-pre=false
198 CFLAGS.clang+= -Qunused-arguments
199 .if ${MACHINE_CPUARCH} == "sparc64"
200 # Don't emit .cfi directives, since we must use GNU as on sparc64, for now.
201 CFLAGS.clang+= -fno-dwarf2-cfi-asm
203 # The libc++ headers use c++11 extensions. These are normally silenced because
204 # they are treated as system headers, but we explicitly disable that warning
205 # suppression when building the base system to catch bugs in our headers.
206 # Eventually we'll want to start building the base system C++ code as C++11,
208 CXXFLAGS.clang+= -Wno-c++11-extensions
210 .if ${MK_SSP} != "no" && \
211 ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips"
212 .if (${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30500) || \
213 (${COMPILER_TYPE} == "gcc" && \
214 (${COMPILER_VERSION} == 40201 || ${COMPILER_VERSION} >= 40900))
215 # Don't use -Wstack-protector as it breaks world with -Werror.
216 SSP_CFLAGS?= -fstack-protector-strong
218 SSP_CFLAGS?= -fstack-protector
220 CFLAGS+= ${SSP_CFLAGS}
221 .endif # SSP && !ARM && !MIPS
223 # Additional flags passed in CFLAGS and CXXFLAGS when MK_DEBUG_FILES is
225 DEBUG_FILES_CFLAGS?= -g
227 # Allow user-specified additional warning flags, plus compiler and file
228 # specific flag overrides, unless we've overridden this...
229 .if ${MK_WARNS} != "no"
230 CFLAGS+= ${CWARNFLAGS:M*} ${CWARNFLAGS.${COMPILER_TYPE}}
231 CFLAGS+= ${CWARNFLAGS.${.IMPSRC:T}}
234 CFLAGS+= ${CFLAGS.${COMPILER_TYPE}}
235 CXXFLAGS+= ${CXXFLAGS.${COMPILER_TYPE}}
237 AFLAGS+= ${AFLAGS.${.IMPSRC:T}}
238 ACFLAGS+= ${ACFLAGS.${.IMPSRC:T}}
239 CFLAGS+= ${CFLAGS.${.IMPSRC:T}}
240 CXXFLAGS+= ${CXXFLAGS.${.IMPSRC:T}}
242 LDFLAGS+= ${LDFLAGS.${LINKER_TYPE}}
245 # Prevent rebuilding during install to support read-only objdirs.
246 .if ${.TARGETS:M*install*} == ${.TARGETS} && empty(.MAKE.MODE:Mmeta)
247 CFLAGS+= ERROR-tried-to-rebuild-during-make-install
251 # Tell bmake not to mistake standard targets for things to be searched for
252 # or expect to ever be up-to-date.
253 PHONY_NOTMAIN = analyze afterdepend afterinstall all beforedepend beforeinstall \
254 beforelinking build build-tools buildconfig buildfiles \
255 buildincludes check checkdpadd clean cleandepend cleandir \
256 cleanobj configure depend distclean distribute exe \
257 files html includes install installconfig installdirs \
258 installfiles installincludes lint obj objlink objs objwarn \
259 realinstall tags whereobj
261 # we don't want ${PROG} to be PHONY
262 .PHONY: ${PHONY_NOTMAIN:N${PROG:U}}
263 .NOTMAIN: ${PHONY_NOTMAIN:Nall}
265 .if ${MK_STAGING} != "no"
266 .if defined(_SKIP_BUILD) || (!make(all) && !make(clean*))
269 .if ${_SKIP_STAGING:Uno} == "yes"
270 staging stage_libs stage_files stage_as stage_links stage_symlinks:
272 # allow targets like beforeinstall to be leveraged
273 DESTDIR= ${STAGE_OBJTOP}
276 .if target(beforeinstall)
277 .if !empty(_LIBS) || (${MK_STAGING_PROG} != "no" && !defined(INTERNALPROG))
278 staging: beforeinstall
282 # normally only libs and includes are staged
283 .if ${MK_STAGING_PROG} != "no" && !defined(INTERNALPROG)
284 STAGE_DIR.prog= ${STAGE_OBJTOP}${BINDIR}
287 .if defined(PROGNAME)
289 STAGE_AS_${PROG}= ${PROGNAME}
290 stage_as.prog: ${PROG}
293 stage_files.prog: ${PROG}
294 STAGE_TARGETS+= stage_files
299 .if !empty(_LIBS) && !defined(INTERNALLIB)
300 .if defined(SHLIBDIR) && ${SHLIBDIR} != ${LIBDIR} && ${_LIBS:Uno:M*.so.*} != ""
302 STAGE_DIR.shlib= ${STAGE_OBJTOP}${SHLIBDIR}
303 STAGE_FILES.shlib+= ${_LIBS:M*.so.*}
304 stage_files.shlib: ${_LIBS:M*.so.*}
307 .if defined(SHLIB_LINK) && commands(${SHLIB_LINK:R}.ld)
308 STAGE_AS_SETS+= ldscript
309 STAGE_AS.ldscript+= ${SHLIB_LINK:R}.ld
310 stage_as.ldscript: ${SHLIB_LINK:R}.ld
311 STAGE_DIR.ldscript = ${STAGE_LIBDIR}
312 STAGE_AS_${SHLIB_LINK:R}.ld:= ${SHLIB_LINK}
316 .if target(stage_files.shlib)
318 .if defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols)
319 stage_files.shlib: ${SHLIB_NAME}.symbols
324 .if defined(SHLIB_NAME) && defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols)
325 stage_libs: ${SHLIB_NAME}.symbols
330 .if !empty(INCS) || !empty(INCSGROUPS) && target(buildincludes)
331 .if !defined(NO_BEFOREBUILD_INCLUDES)
332 stage_includes: buildincludes
333 beforebuild: stage_includes
337 .for t in stage_libs stage_files stage_as
343 .if !empty(STAGE_AS_SETS)
344 STAGE_TARGETS+= stage_as
347 .if !empty(STAGE_TARGETS) || (${MK_STAGING_PROG} != "no" && !defined(INTERNALPROG))
350 STAGE_TARGETS+= stage_links
351 .if ${MAKE_VERSION} < 20131001
352 stage_links.links: ${_LIBS} ${PROG}
355 STAGE_LINKS.links= ${LINKS}
359 STAGE_TARGETS+= stage_symlinks
361 STAGE_SYMLINKS.links= ${SYMLINKS}
366 .include <meta.stage.mk>
370 .if defined(META_TARGETS)
371 .for _tgt in ${META_TARGETS}
373 ${_tgt}: ${META_DEPS}