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 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 ${CSTD} == "c99"
23 CFLAGS+= -std=iso9899:1999
27 # -pedantic is problematic because it also imposes namespace restrictions
31 CWARNFLAGS+= -Wsystem-headers
32 .if !defined(NO_WERROR) && !defined(NO_WERROR.${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}
52 CWARNFLAGS+= -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls\
53 -Wold-style-definition
54 .if !defined(NO_WMISSING_VARIABLE_DECLARATIONS)
55 CWARNFLAGS.clang+= -Wmissing-variable-declarations
57 .if !defined(NO_WTHREAD_SAFETY)
58 CWARNFLAGS.clang+= -Wthread-safety
61 .if ${WARNS} >= 2 && ${WARNS} <= 4
62 # XXX Delete -Wuninitialized by default for now -- the compiler doesn't
63 # XXX always get it right.
64 CWARNFLAGS+= -Wno-uninitialized
65 .endif # WARNS >=2 && WARNS <= 4
66 CWARNFLAGS+= -Wno-pointer-sign
67 # Clang has more warnings enabled by default, and when using -Wall, so if WARNS
68 # is set to low values, these have to be disabled explicitly.
70 CWARNFLAGS.clang+= -Wno-empty-body -Wno-string-plus-int
71 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30400
72 CWARNFLAGS.clang+= -Wno-unused-const-variable
76 CWARNFLAGS.clang+= -Wno-tautological-compare -Wno-unused-value\
77 -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion
78 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30600
79 CWARNFLAGS.clang+= -Wno-unused-local-typedef
83 CWARNFLAGS.clang+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter
86 CWARNFLAGS.clang+= -Wno-parentheses
88 .if defined(NO_WARRAY_BOUNDS)
89 CWARNFLAGS.clang+= -Wno-array-bounds
90 .endif # NO_WARRAY_BOUNDS
93 .if defined(FORMAT_AUDIT)
98 #CWARNFLAGS+= -Wformat-nonliteral -Wformat-security -Wno-format-extra-args
99 CWARNFLAGS+= -Wformat=2 -Wno-format-extra-args
101 CWARNFLAGS.clang+= -Wno-format-nonliteral
103 .if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE})
105 .endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE}
108 .if defined(NO_WFORMAT) || defined(NO_WFORMAT.${COMPILER_TYPE})
109 CWARNFLAGS+= -Wno-format
110 .endif # NO_WFORMAT || NO_WFORMAT.${COMPILER_TYPE}
112 # How to handle FreeBSD custom printf format specifiers.
113 .if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30600
114 FORMAT_EXTENSIONS= -D__printf__=__freebsd_kprintf__
116 FORMAT_EXTENSIONS= -fformat-extensions
119 .if defined(IGNORE_PRAGMA)
120 CWARNFLAGS+= -Wno-unknown-pragmas
121 .endif # IGNORE_PRAGMA
123 # We need this conditional because many places that use it
124 # only enable it for some files with CLFAGS.$FILE+=${CLANG_NO_IAS}.
125 # unconditionally, and can't easily use the CFLAGS.clang=
127 .if ${COMPILER_TYPE} == "clang"
128 CLANG_NO_IAS= -no-integrated-as
130 CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\
131 -mllvm -simplifycfg-dup-ret
132 .if ${COMPILER_VERSION} >= 30500
133 CLANG_OPT_SMALL+= -mllvm -enable-gvn=false
135 CLANG_OPT_SMALL+= -mllvm -enable-load-pre=false
137 CFLAGS.clang+= -Qunused-arguments
138 .if ${MACHINE_CPUARCH} == "sparc64"
139 # Don't emit .cfi directives, since we must use GNU as on sparc64, for now.
140 CFLAGS.clang+= -fno-dwarf2-cfi-asm
142 # The libc++ headers use c++11 extensions. These are normally silenced because
143 # they are treated as system headers, but we explicitly disable that warning
144 # suppression when building the base system to catch bugs in our headers.
145 # Eventually we'll want to start building the base system C++ code as C++11,
147 CXXFLAGS.clang+= -Wno-c++11-extensions
149 .if ${MK_SSP} != "no" && \
150 ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips"
151 # Don't use -Wstack-protector as it breaks world with -Werror.
152 SSP_CFLAGS?= -fstack-protector
153 CFLAGS+= ${SSP_CFLAGS}
154 .endif # SSP && !ARM && !MIPS
156 # Allow user-specified additional warning flags, plus compiler specific flag overrides.
157 # Unless we've overriden this...
158 .if ${MK_WARNS} != "no"
159 CFLAGS+= ${CWARNFLAGS} ${CWARNFLAGS.${COMPILER_TYPE}}
162 CFLAGS+= ${CFLAGS.${COMPILER_TYPE}}
163 CXXFLAGS+= ${CXXFLAGS.${COMPILER_TYPE}}
165 # Tell bmake not to mistake standard targets for things to be searched for
166 # or expect to ever be up-to-date.
167 PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \
168 beforelinking build build-tools buildfiles buildincludes \
169 checkdpadd clean cleandepend cleandir cleanobj configure \
170 depend dependall distclean distribute exe \
171 html includes install installfiles installincludes lint \
172 obj objlink objs objwarn realall realdepend \
173 realinstall regress subdir-all subdir-depend subdir-install \
176 # we don't want ${PROG} to be PHONY
177 .PHONY: ${PHONY_NOTMAIN:N${PROG:U}}
178 .NOTMAIN: ${PHONY_NOTMAIN:Nall}
180 .if ${MK_STAGING} != "no"
181 .if defined(_SKIP_BUILD) || (!make(all) && !make(clean*))
184 .if ${_SKIP_STAGING:Uno} == "yes"
185 staging stage_libs stage_files stage_as stage_links stage_symlinks:
187 # allow targets like beforeinstall to be leveraged
188 DESTDIR= ${STAGE_OBJTOP}
190 .if commands(beforeinstall)
191 .if !empty(_LIBS) || ${MK_STAGING_PROG} != "no"
192 staging: beforeinstall
196 # normally only libs and includes are staged
197 .if ${MK_STAGING_PROG} != "no"
198 STAGE_DIR.prog= ${STAGE_OBJTOP}${BINDIR}
200 .if !empty(PROG) || !empty(PROGS)
201 .if defined(PROGNAME)
203 STAGE_AS_${PROG}= ${PROGNAME}
204 stage_as.prog: ${PROG}
207 stage_files.prog: ${PROG}
213 .if !empty(_LIBS) && !defined(INTERNALLIB)
214 .if defined(SHLIBDIR) && ${SHLIBDIR} != ${LIBDIR} && ${_LIBS:Uno:M*.so.*} != ""
216 STAGE_DIR.shlib= ${STAGE_OBJTOP}${SHLIBDIR}
217 STAGE_FILES.shlib+= ${_LIBS:M*.so.*}
218 stage_files.shlib: ${_LIBS:M*.so.*}
221 .if defined(SHLIB_LINK) && commands(${SHLIB_LINK:R}.ld)
222 _LDSCRIPTROOT?= ${STAGE_OBJTOP}
223 STAGE_AS_SETS+= ldscript
224 STAGE_AS.ldscript+= ${SHLIB_LINK:R}.ld
225 stage_as.ldscript: ${SHLIB_LINK:R}.ld
226 STAGE_DIR.ldscript = ${STAGE_LIBDIR}
227 STAGE_AS_${SHLIB_LINK:R}.ld:= ${SHLIB_LINK}
231 .if target(stage_files.shlib)
233 .if defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols)
234 stage_files.shlib: ${SHLIB_NAME}.symbols
239 .if defined(SHLIB_NAME) && defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols)
240 stage_libs: ${SHLIB_NAME}.symbols
245 .if !empty(INCS) || !empty(INCSGROUPS) && target(buildincludes)
246 .if !defined(NO_BEFOREBUILD_INCLUDES)
247 stage_includes: buildincludes
248 beforebuild: stage_includes
252 .for t in stage_libs stage_files stage_as
258 .if !empty(STAGE_AS_SETS)
262 .if !empty(_LIBS) || ${MK_STAGING_PROG} != "no"
266 .if ${MAKE_VERSION} < 20131001
267 stage_links.links: ${_LIBS} ${PROG}
270 STAGE_LINKS.links= ${LINKS}
274 staging: stage_symlinks
276 STAGE_SYMLINKS.links= ${SYMLINKS}
281 .include <meta.stage.mk>