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.endif # WARNS >= 6 58.if ${WARNS} >= 2 && ${WARNS} <= 4 59# XXX Delete -Wuninitialized by default for now -- the compiler doesn't 60# XXX always get it right. 61CWARNFLAGS+= -Wno-uninitialized 62.endif # WARNS >=2 && WARNS <= 4 63CWARNFLAGS+= -Wno-pointer-sign 64# Clang has more warnings enabled by default, and when using -Wall, so if WARNS 65# is set to low values, these have to be disabled explicitly. 66.if ${WARNS} <= 6 67CWARNFLAGS.clang+= -Wno-empty-body -Wno-string-plus-int 68.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} > 30300 69CWARNFLAGS.clang+= -Wno-unused-const-variable 70.endif 71.endif # WARNS <= 6 72.if ${WARNS} <= 3 73CWARNFLAGS.clang+= -Wno-tautological-compare -Wno-unused-value\ 74 -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion 75.endif # WARNS <= 3 76.if ${WARNS} <= 2 77CWARNFLAGS.clang+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter 78.endif # WARNS <= 2 79.if ${WARNS} <= 1 80CWARNFLAGS.clang+= -Wno-parentheses 81.endif # WARNS <= 1 82.if defined(NO_WARRAY_BOUNDS) 83CWARNFLAGS.clang+= -Wno-array-bounds 84.endif # NO_WARRAY_BOUNDS 85.endif # WARNS 86 87.if defined(FORMAT_AUDIT) 88WFORMAT= 1 89.endif # FORMAT_AUDIT 90.if defined(WFORMAT) 91.if ${WFORMAT} > 0 92#CWARNFLAGS+= -Wformat-nonliteral -Wformat-security -Wno-format-extra-args 93CWARNFLAGS+= -Wformat=2 -Wno-format-extra-args 94.if ${WARNS} <= 3 95CWARNFLAGS.clang+= -Wno-format-nonliteral 96.endif # WARNS <= 3 97.if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE}) 98CWARNFLAGS+= -Werror 99.endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE} 100.endif # WFORMAT > 0 101.endif # WFORMAT 102.if defined(NO_WFORMAT) || defined(NO_WFORMAT.${COMPILER_TYPE}) 103CWARNFLAGS+= -Wno-format 104.endif # NO_WFORMAT || NO_WFORMAT.${COMPILER_TYPE} 105 106.if defined(IGNORE_PRAGMA) 107CWARNFLAGS+= -Wno-unknown-pragmas 108.endif # IGNORE_PRAGMA 109 110.if ${COMPILER_TYPE} == "clang" 111# Would love to do this unconditionally, but can't due to its use in 112# kernel build coupled with CFLAGS.${TARGET} feature 113CLANG_NO_IAS= -no-integrated-as 114.endif 115CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\ 116 -mllvm -enable-load-pre=false -mllvm -simplifycfg-dup-ret 117CFLAGS.clang+= -Qunused-arguments 118.if ${MACHINE_CPUARCH} == "sparc64" 119# Don't emit .cfi directives, since we must use GNU as on sparc64, for now. 120CFLAGS.clang+= -fno-dwarf2-cfi-asm 121.endif # SPARC64 122# The libc++ headers use c++11 extensions. These are normally silenced because 123# they are treated as system headers, but we explicitly disable that warning 124# suppression when building the base system to catch bugs in our headers. 125# Eventually we'll want to start building the base system C++ code as C++11, 126# but not yet. 127CXXFLAGS.clang+= -Wno-c++11-extensions 128 129.if ${MK_SSP} != "no" && \ 130 ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips" 131# Don't use -Wstack-protector as it breaks world with -Werror. 132SSP_CFLAGS?= -fstack-protector 133CFLAGS+= ${SSP_CFLAGS} 134.endif # SSP && !ARM && !MIPS 135 136# Allow user-specified additional warning flags, plus compiler specific flag overrides. 137# Unless we've overriden this... 138.if ${MK_WARNS} != "no" 139CFLAGS+= ${CWARNFLAGS} ${CWARNFLAGS.${COMPILER_TYPE}} 140.endif 141 142CFLAGS+= ${CFLAGS.${COMPILER_TYPE}} 143CXXFLAGS+= ${CXXFLAGS.${COMPILER_TYPE}} 144 145# Tell bmake not to mistake standard targets for things to be searched for 146# or expect to ever be up-to-date. 147PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \ 148 beforelinking build build-tools buildfiles buildincludes \ 149 checkdpadd clean cleandepend cleandir cleanobj configure \ 150 depend dependall distclean distribute exe \ 151 html includes install installfiles installincludes lint \ 152 obj objlink objs objwarn realall realdepend \ 153 realinstall regress subdir-all subdir-depend subdir-install \ 154 tags whereobj 155 156# we don't want ${PROG} to be PHONY 157.PHONY: ${PHONY_NOTMAIN:N${PROG:U}} 158.NOTMAIN: ${PHONY_NOTMAIN:Nall} 159 160.if ${MK_STAGING} != "no" 161.if defined(_SKIP_BUILD) || (!make(all) && !make(clean*)) 162_SKIP_STAGING?= yes 163.endif 164.if ${_SKIP_STAGING:Uno} == "yes" 165staging stage_libs stage_files stage_as stage_links stage_symlinks: 166.else 167# allow targets like beforeinstall to be leveraged 168DESTDIR= ${STAGE_OBJTOP} 169_SHLIBDIRPREFIX= ${STAGE_OBJTOP} 170 171.if commands(beforeinstall) 172.if !empty(_LIBS) || ${MK_STAGING_PROG} != "no" 173staging: beforeinstall 174.endif 175.endif 176 177# normally only libs and includes are staged 178.if ${MK_STAGING_PROG} != "no" 179STAGE_DIR.prog= ${STAGE_OBJTOP}${BINDIR} 180 181.if !empty(PROG) || !empty(PROGS) 182.if defined(PROGNAME) 183STAGE_AS_SETS+= prog 184STAGE_AS_${PROG}= ${PROGNAME} 185stage_as.prog: ${PROG} 186.else 187STAGE_SETS+= prog 188stage_files.prog: ${PROG} 189staging: stage_files 190.endif 191.endif 192.endif 193 194.if !empty(_LIBS) && !defined(INTERNALLIB) 195.if defined(SHLIBDIR) && ${SHLIBDIR} != ${LIBDIR} && ${_LIBS:Uno:M*.so.*} != "" 196STAGE_SETS+= shlib 197STAGE_DIR.shlib= ${STAGE_OBJTOP}${SHLIBDIR} 198STAGE_FILES.shlib+= ${_LIBS:M*.so.*} 199stage_files.shlib: ${_LIBS:M*.so.*} 200.endif 201 202.if defined(SHLIB_LINK) && commands(${SHLIB_LINK:R}.ld) 203_LDSCRIPTROOT?= ${STAGE_OBJTOP} 204STAGE_AS_SETS+= ldscript 205STAGE_AS.ldscript+= ${SHLIB_LINK:R}.ld 206stage_as.ldscript: ${SHLIB_LINK:R}.ld 207STAGE_DIR.ldscript = ${STAGE_LIBDIR} 208STAGE_AS_${SHLIB_LINK:R}.ld:= ${SHLIB_LINK} 209NO_SHLIB_LINKS= 210.endif 211 212.if target(stage_files.shlib) 213stage_libs: ${_LIBS} 214.if defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols) 215stage_files.shlib: ${SHLIB_NAME}.symbols 216.endif 217.else 218stage_libs: ${_LIBS} 219.endif 220.if defined(SHLIB_NAME) && defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols) 221stage_libs: ${SHLIB_NAME}.symbols 222.endif 223 224.endif 225 226.if !empty(INCS) || !empty(INCSGROUPS) && target(buildincludes) 227.if !defined(NO_BEFOREBUILD_INCLUDES) 228stage_includes: buildincludes 229beforebuild: stage_includes 230.endif 231.endif 232 233.for t in stage_libs stage_files stage_as 234.if target($t) 235staging: $t 236.endif 237.endfor 238 239.if !empty(STAGE_AS_SETS) 240staging: stage_as 241.endif 242 243.if !empty(_LIBS) || ${MK_STAGING_PROG} != "no" 244 245.if !empty(LINKS) 246staging: stage_links 247.if ${MAKE_VERSION} < 20131001 248stage_links.links: ${_LIBS} ${PROG} 249.endif 250STAGE_SETS+= links 251STAGE_LINKS.links= ${LINKS} 252.endif 253 254.if !empty(SYMLINKS) 255staging: stage_symlinks 256STAGE_SETS+= links 257STAGE_SYMLINKS.links= ${SYMLINKS} 258.endif 259 260.endif 261 262.include <meta.stage.mk> 263.endif 264.endif 265 266