1# $FreeBSD$ 2# 3# This file contains common settings used for building FreeBSD 4# sources. 5 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. 8 9# for GCC: http://gcc.gnu.org/onlinedocs/gcc-4.2.1/gcc/Warning-Options.html 10 11.include <bsd.compiler.mk> 12 13# the default is gnu99 for now 14CSTD?= gnu99 15 16.if ${CSTD} == "k&r" 17CFLAGS+= -traditional 18.elif ${CSTD} == "c89" || ${CSTD} == "c90" 19CFLAGS+= -std=iso9899:1990 20.elif ${CSTD} == "c94" || ${CSTD} == "c95" 21CFLAGS+= -std=iso9899:199409 22.elif ${CSTD} == "c99" 23CFLAGS+= -std=iso9899:1999 24.else # CSTD 25CFLAGS+= -std=${CSTD} 26.endif # CSTD 27# -pedantic is problematic because it also imposes namespace restrictions 28#CFLAGS+= -pedantic 29.if defined(WARNS) 30.if ${WARNS} >= 1 31CWARNFLAGS+= -Wsystem-headers 32.if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE}) 33CWARNFLAGS+= -Werror 34.endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE} 35.endif # WARNS >= 1 36.if ${WARNS} >= 2 37CWARNFLAGS+= -Wall -Wno-format-y2k 38.endif # WARNS >= 2 39.if ${WARNS} >= 3 40CWARNFLAGS+= -W -Wno-unused-parameter -Wstrict-prototypes\ 41 -Wmissing-prototypes -Wpointer-arith 42.endif # WARNS >= 3 43.if ${WARNS} >= 4 44CWARNFLAGS+= -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow\ 45 -Wunused-parameter 46.if !defined(NO_WCAST_ALIGN) && !defined(NO_WCAST_ALIGN.${COMPILER_TYPE}) 47CWARNFLAGS+= -Wcast-align 48.endif # !NO_WCAST_ALIGN !NO_WCAST_ALIGN.${COMPILER_TYPE} 49.endif # WARNS >= 4 50# BDECFLAGS 51.if ${WARNS} >= 6 52CWARNFLAGS+= -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls\ 53 -Wold-style-definition 54.if !defined(NO_WMISSING_VARIABLE_DECLARATIONS) 55CWARNFLAGS.clang+= -Wmissing-variable-declarations 56.endif 57.if !defined(NO_WTHREAD_SAFETY) 58CWARNFLAGS.clang+= -Wthread-safety 59.endif 60.endif # WARNS >= 6 61.if ${WARNS} >= 2 && ${WARNS} <= 4 62# XXX Delete -Wuninitialized by default for now -- the compiler doesn't 63# XXX always get it right. 64CWARNFLAGS+= -Wno-uninitialized 65.endif # WARNS >=2 && WARNS <= 4 66CWARNFLAGS+= -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. 69.if ${WARNS} <= 6 70CWARNFLAGS.clang+= -Wno-empty-body -Wno-string-plus-int 71.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} > 30300 72CWARNFLAGS.clang+= -Wno-unused-const-variable 73.endif 74.endif # WARNS <= 6 75.if ${WARNS} <= 3 76CWARNFLAGS.clang+= -Wno-tautological-compare -Wno-unused-value\ 77 -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion 78.endif # WARNS <= 3 79.if ${WARNS} <= 2 80CWARNFLAGS.clang+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter 81.endif # WARNS <= 2 82.if ${WARNS} <= 1 83CWARNFLAGS.clang+= -Wno-parentheses 84.endif # WARNS <= 1 85.if defined(NO_WARRAY_BOUNDS) 86CWARNFLAGS.clang+= -Wno-array-bounds 87.endif # NO_WARRAY_BOUNDS 88.endif # WARNS 89 90.if defined(FORMAT_AUDIT) 91WFORMAT= 1 92.endif # FORMAT_AUDIT 93.if defined(WFORMAT) 94.if ${WFORMAT} > 0 95#CWARNFLAGS+= -Wformat-nonliteral -Wformat-security -Wno-format-extra-args 96CWARNFLAGS+= -Wformat=2 -Wno-format-extra-args 97.if ${WARNS} <= 3 98CWARNFLAGS.clang+= -Wno-format-nonliteral 99.endif # WARNS <= 3 100.if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE}) 101CWARNFLAGS+= -Werror 102.endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE} 103.endif # WFORMAT > 0 104.endif # WFORMAT 105.if defined(NO_WFORMAT) || defined(NO_WFORMAT.${COMPILER_TYPE}) 106CWARNFLAGS+= -Wno-format 107.endif # NO_WFORMAT || NO_WFORMAT.${COMPILER_TYPE} 108 109.if defined(IGNORE_PRAGMA) 110CWARNFLAGS+= -Wno-unknown-pragmas 111.endif # IGNORE_PRAGMA 112 113.if ${COMPILER_TYPE} == "clang" 114# Would love to do this unconditionally, but can't due to its use in 115# kernel build coupled with CFLAGS.${TARGET} feature 116CLANG_NO_IAS= -no-integrated-as 117.endif 118CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\ 119 -mllvm -enable-load-pre=false -mllvm -simplifycfg-dup-ret 120CFLAGS.clang+= -Qunused-arguments 121.if ${MACHINE_CPUARCH} == "sparc64" 122# Don't emit .cfi directives, since we must use GNU as on sparc64, for now. 123CFLAGS.clang+= -fno-dwarf2-cfi-asm 124.endif # SPARC64 125# The libc++ headers use c++11 extensions. These are normally silenced because 126# they are treated as system headers, but we explicitly disable that warning 127# suppression when building the base system to catch bugs in our headers. 128# Eventually we'll want to start building the base system C++ code as C++11, 129# but not yet. 130CXXFLAGS.clang+= -Wno-c++11-extensions 131 132.if ${MK_SSP} != "no" && \ 133 ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips" 134# Don't use -Wstack-protector as it breaks world with -Werror. 135SSP_CFLAGS?= -fstack-protector 136CFLAGS+= ${SSP_CFLAGS} 137.endif # SSP && !ARM && !MIPS 138 139# Allow user-specified additional warning flags, plus compiler specific flag overrides. 140# Unless we've overriden this... 141.if ${MK_WARNS} != "no" 142CFLAGS+= ${CWARNFLAGS} ${CWARNFLAGS.${COMPILER_TYPE}} 143.endif 144 145CFLAGS+= ${CFLAGS.${COMPILER_TYPE}} 146CXXFLAGS+= ${CXXFLAGS.${COMPILER_TYPE}} 147 148# Tell bmake not to mistake standard targets for things to be searched for 149# or expect to ever be up-to-date. 150PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \ 151 beforelinking build build-tools buildfiles buildincludes \ 152 checkdpadd clean cleandepend cleandir cleanobj configure \ 153 depend dependall distclean distribute exe \ 154 html includes install installfiles installincludes lint \ 155 obj objlink objs objwarn realall realdepend \ 156 realinstall regress subdir-all subdir-depend subdir-install \ 157 tags whereobj 158 159# we don't want ${PROG} to be PHONY 160.PHONY: ${PHONY_NOTMAIN:N${PROG:U}} 161.NOTMAIN: ${PHONY_NOTMAIN:Nall} 162 163.if ${MK_STAGING} != "no" 164.if defined(_SKIP_BUILD) || (!make(all) && !make(clean*)) 165_SKIP_STAGING?= yes 166.endif 167.if ${_SKIP_STAGING:Uno} == "yes" 168staging stage_libs stage_files stage_as stage_links stage_symlinks: 169.else 170# allow targets like beforeinstall to be leveraged 171DESTDIR= ${STAGE_OBJTOP} 172_SHLIBDIRPREFIX= ${STAGE_OBJTOP} 173 174.if commands(beforeinstall) 175.if !empty(_LIBS) || ${MK_STAGING_PROG} != "no" 176staging: beforeinstall 177.endif 178.endif 179 180# normally only libs and includes are staged 181.if ${MK_STAGING_PROG} != "no" 182STAGE_DIR.prog= ${STAGE_OBJTOP}${BINDIR} 183 184.if !empty(PROG) || !empty(PROGS) 185.if defined(PROGNAME) 186STAGE_AS_SETS+= prog 187STAGE_AS_${PROG}= ${PROGNAME} 188stage_as.prog: ${PROG} 189.else 190STAGE_SETS+= prog 191stage_files.prog: ${PROG} 192staging: stage_files 193.endif 194.endif 195.endif 196 197.if !empty(_LIBS) && !defined(INTERNALLIB) 198.if defined(SHLIBDIR) && ${SHLIBDIR} != ${LIBDIR} && ${_LIBS:Uno:M*.so.*} != "" 199STAGE_SETS+= shlib 200STAGE_DIR.shlib= ${STAGE_OBJTOP}${SHLIBDIR} 201STAGE_FILES.shlib+= ${_LIBS:M*.so.*} 202stage_files.shlib: ${_LIBS:M*.so.*} 203.endif 204 205.if defined(SHLIB_LINK) && commands(${SHLIB_LINK:R}.ld) 206_LDSCRIPTROOT?= ${STAGE_OBJTOP} 207STAGE_AS_SETS+= ldscript 208STAGE_AS.ldscript+= ${SHLIB_LINK:R}.ld 209stage_as.ldscript: ${SHLIB_LINK:R}.ld 210STAGE_DIR.ldscript = ${STAGE_LIBDIR} 211STAGE_AS_${SHLIB_LINK:R}.ld:= ${SHLIB_LINK} 212NO_SHLIB_LINKS= 213.endif 214 215.if target(stage_files.shlib) 216stage_libs: ${_LIBS} 217.if defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols) 218stage_files.shlib: ${SHLIB_NAME}.symbols 219.endif 220.else 221stage_libs: ${_LIBS} 222.endif 223.if defined(SHLIB_NAME) && defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols) 224stage_libs: ${SHLIB_NAME}.symbols 225.endif 226 227.endif 228 229.if !empty(INCS) || !empty(INCSGROUPS) && target(buildincludes) 230.if !defined(NO_BEFOREBUILD_INCLUDES) 231stage_includes: buildincludes 232beforebuild: stage_includes 233.endif 234.endif 235 236.for t in stage_libs stage_files stage_as 237.if target($t) 238staging: $t 239.endif 240.endfor 241 242.if !empty(STAGE_AS_SETS) 243staging: stage_as 244.endif 245 246.if !empty(_LIBS) || ${MK_STAGING_PROG} != "no" 247 248.if !empty(LINKS) 249staging: stage_links 250.if ${MAKE_VERSION} < 20131001 251stage_links.links: ${_LIBS} ${PROG} 252.endif 253STAGE_SETS+= links 254STAGE_LINKS.links= ${LINKS} 255.endif 256 257.if !empty(SYMLINKS) 258staging: stage_symlinks 259STAGE_SETS+= links 260STAGE_SYMLINKS.links= ${SYMLINKS} 261.endif 262 263.endif 264 265.include <meta.stage.mk> 266.endif 267.endif 268 269