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 NO_WARNS. 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.if !defined(NO_WARNS) 28# -pedantic is problematic because it also imposes namespace restrictions 29#CFLAGS+= -pedantic 30.if defined(WARNS) 31.if ${WARNS} >= 1 32CWARNFLAGS+= -Wsystem-headers 33.if !defined(NO_WERROR) && (${COMPILER_TYPE} != "clang" \ 34 || !defined(NO_WERROR.clang)) 35CWARNFLAGS+= -Werror 36.endif # !NO_WERROR && (!CLANG || !NO_WERROR.clang) 37.endif # WARNS >= 1 38.if ${WARNS} >= 2 39CWARNFLAGS+= -Wall -Wno-format-y2k 40.endif # WARNS >= 2 41.if ${WARNS} >= 3 42CWARNFLAGS+= -W -Wno-unused-parameter -Wstrict-prototypes\ 43 -Wmissing-prototypes -Wpointer-arith 44.endif # WARNS >= 3 45.if ${WARNS} >= 4 46CWARNFLAGS+= -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow\ 47 -Wunused-parameter 48.if !defined(NO_WCAST_ALIGN) && (${COMPILER_TYPE} != "clang" \ 49 || !defined(NO_WCAST_ALIGN.clang)) 50CWARNFLAGS+= -Wcast-align 51.endif # !NO_WCAST_ALIGN && (!CLANG || !NO_WCAST_ALIGN.clang) 52.endif # WARNS >= 4 53# BDECFLAGS 54.if ${WARNS} >= 6 55CWARNFLAGS+= -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls\ 56 -Wold-style-definition 57.if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD) && \ 58 !defined(NO_WMISSING_VARIABLE_DECLARATIONS) 59CWARNFLAGS+= -Wmissing-variable-declarations 60.endif 61.endif # WARNS >= 6 62.if ${WARNS} >= 2 && ${WARNS} <= 4 63# XXX Delete -Wuninitialized by default for now -- the compiler doesn't 64# XXX always get it right. 65CWARNFLAGS+= -Wno-uninitialized 66.endif # WARNS >=2 && WARNS <= 4 67CWARNFLAGS+= -Wno-pointer-sign 68# Clang has more warnings enabled by default, and when using -Wall, so if WARNS 69# is set to low values, these have to be disabled explicitly. 70.if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD) 71.if ${WARNS} <= 6 72CWARNFLAGS+= -Wno-empty-body -Wno-string-plus-int 73.endif # WARNS <= 6 74.if ${WARNS} <= 3 75CWARNFLAGS+= -Wno-tautological-compare -Wno-unused-value\ 76 -Wno-parentheses-equality -Wno-unused-function -Wno-conversion 77.endif # WARNS <= 3 78.if ${WARNS} <= 2 79CWARNFLAGS+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter 80.endif # WARNS <= 2 81.if ${WARNS} <= 1 82CWARNFLAGS+= -Wno-parentheses 83.endif # WARNS <= 1 84.if defined(NO_WARRAY_BOUNDS) 85CWARNFLAGS+= -Wno-array-bounds 86.endif # NO_WARRAY_BOUNDS 87.endif # CLANG 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 ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD) 98.if ${WARNS} <= 3 99CWARNFLAGS+= -Wno-format-nonliteral 100.endif # WARNS <= 3 101.endif # CLANG 102.if !defined(NO_WERROR) && (${COMPILER_TYPE} != "clang" \ 103 || !defined(NO_WERROR.clang)) 104CWARNFLAGS+= -Werror 105.endif # !NO_WERROR && (!CLANG || !NO_WERROR.clang) 106.endif # WFORMAT > 0 107.endif # WFORMAT 108.if defined(NO_WFORMAT) || (${COMPILER_TYPE} == "clang" && defined(NO_WFORMAT.clang)) 109CWARNFLAGS+= -Wno-format 110.endif # NO_WFORMAT || (CLANG && NO_WFORMAT.clang) 111.endif # !NO_WARNS 112 113.if defined(IGNORE_PRAGMA) 114CWARNFLAGS+= -Wno-unknown-pragmas 115.endif # IGNORE_PRAGMA 116 117.if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD) 118CLANG_NO_IAS= -no-integrated-as 119CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\ 120 -mllvm -enable-load-pre=false -mllvm -simplifycfg-dup-ret 121CFLAGS+= -Qunused-arguments 122.endif # CLANG 123 124.if ${MK_SSP} != "no" && ${MACHINE_CPUARCH} != "ia64" && \ 125 ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips" 126# Don't use -Wstack-protector as it breaks world with -Werror. 127SSP_CFLAGS?= -fstack-protector 128CFLAGS+= ${SSP_CFLAGS} 129.endif # SSP && !IA64 && !ARM && !MIPS 130 131# Allow user-specified additional warning flags 132CFLAGS+= ${CWARNFLAGS} 133 134 135# Tell bmake not to mistake standard targets for things to be searched for 136# or expect to ever be up-to-date. 137PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \ 138 beforelinking build build-tools buildfiles buildincludes \ 139 checkdpadd clean cleandepend cleandir cleanobj configure \ 140 depend dependall distclean distribute exe extract fetch \ 141 html includes install installfiles installincludes lint \ 142 obj objlink objs objwarn patch realall realdepend \ 143 realinstall regress subdir-all subdir-depend subdir-install \ 144 tags whereobj 145 146.if defined(.PARSEDIR) 147# we don't want ${PROG} to be PHONY 148.PHONY: ${PHONY_NOTMAIN:N${PROG:U}} 149.else 150.PHONY: ${PHONY_NOTMAIN} 151.endif 152.NOTMAIN: ${PHONY_NOTMAIN} 153 154.if !defined(.PARSEDIR) 155# this is a no-op 156.WAIT: 157.endif 158 159.if ${MK_STAGING} != "no" 160.if defined(_SKIP_BUILD) || (!make(all) && !make(clean*)) 161_SKIP_STAGING?= yes 162.endif 163.if ${_SKIP_STAGING:Uno} == "yes" 164staging stage_libs stage_files stage_as stage_links stage_symlinks: 165.else 166# allow targets like beforeinstall to be leveraged 167DESTDIR= ${STAGE_OBJTOP} 168 169.if commands(beforeinstall) 170.if !empty(_LIBS) || ${MK_STAGING_PROG} != "no" 171staging: beforeinstall 172.endif 173.endif 174 175# normally only libs and includes are staged 176.if ${MK_STAGING_PROG} != "no" 177STAGE_DIR.prog= ${STAGE_OBJTOP}${BINDIR} 178 179.if !empty(PROG) || !empty(PROGS) 180.if defined(PROGNAME) 181STAGE_AS_SETS+= prog 182STAGE_AS_${PROG}= ${PROGNAME} 183stage_as.prog: ${PROG} 184.else 185STAGE_SETS+= prog 186stage_files.prog: ${PROG} 187staging: stage_files 188.endif 189.endif 190.endif 191 192.if !empty(_LIBS) && !defined(INTERNALLIB) 193stage_libs: ${_LIBS} 194.if defined(SHLIB_NAME) && defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols) 195stage_libs: ${SHLIB_NAME}.symbols 196.endif 197.endif 198 199.if !empty(INCS) || !empty(INCSGROUPS) && target(buildincludes) 200beforebuild: buildincludes 201.endif 202 203.for t in stage_libs stage_files stage_as 204.if target($t) 205staging: $t 206.endif 207.endfor 208 209.if !empty(STAGE_AS_SETS) 210staging: stage_as 211.endif 212 213.if !empty(_LIBS) || ${MK_STAGING_PROG} != "no" 214 215.if !empty(LINKS) 216staging: stage_links 217.if ${MAKE_VERSION} < 20131001 218stage_links.links: ${_LIBS} ${PROG} 219.endif 220STAGE_SETS+= links 221STAGE_LINKS.links= ${LINKS} 222.endif 223 224.if !empty(SYMLINKS) 225staging: stage_symlinks 226STAGE_SETS+= links 227STAGE_SYMLINKS.links= ${SYMLINKS} 228.endif 229 230.endif 231 232.include <meta.stage.mk> 233.endif 234.endif 235 236