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} >= 30400 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.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30600 79CWARNFLAGS.clang+= -Wno-unused-local-typedef 80.endif 81.endif # WARNS <= 3 82.if ${WARNS} <= 2 83CWARNFLAGS.clang+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter 84.endif # WARNS <= 2 85.if ${WARNS} <= 1 86CWARNFLAGS.clang+= -Wno-parentheses 87.endif # WARNS <= 1 88.if defined(NO_WARRAY_BOUNDS) 89CWARNFLAGS.clang+= -Wno-array-bounds 90.endif # NO_WARRAY_BOUNDS 91.endif # WARNS 92 93.if defined(FORMAT_AUDIT) 94WFORMAT= 1 95.endif # FORMAT_AUDIT 96.if defined(WFORMAT) 97.if ${WFORMAT} > 0 98#CWARNFLAGS+= -Wformat-nonliteral -Wformat-security -Wno-format-extra-args 99CWARNFLAGS+= -Wformat=2 -Wno-format-extra-args 100.if ${WARNS} <= 3 101CWARNFLAGS.clang+= -Wno-format-nonliteral 102.endif # WARNS <= 3 103.if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE}) 104CWARNFLAGS+= -Werror 105.endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE} 106.endif # WFORMAT > 0 107.endif # WFORMAT 108.if defined(NO_WFORMAT) || defined(NO_WFORMAT.${COMPILER_TYPE}) 109CWARNFLAGS+= -Wno-format 110.endif # NO_WFORMAT || NO_WFORMAT.${COMPILER_TYPE} 111 112# GCC 5.2.0 113.if ${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 50200 114CWARNFLAGS+= -Wno-error=unused-function -Wno-error=enum-compare -Wno-error=logical-not-parentheses -Wno-error=bool-compare -Wno-error=uninitialized -Wno-error=array-bounds -Wno-error=clobbered -Wno-error=cast-align -Wno-error=extra -Wno-error=attributes -Wno-error=inline -Wno-error=unused-but-set-variable -Wno-error=unused-value -Wno-error=strict-aliasing -Wno-error=address 115.endif 116 117# How to handle FreeBSD custom printf format specifiers. 118.if ${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30600 119FORMAT_EXTENSIONS= -D__printf__=__freebsd_kprintf__ 120.else 121FORMAT_EXTENSIONS= -fformat-extensions 122.endif 123 124.if defined(IGNORE_PRAGMA) 125CWARNFLAGS+= -Wno-unknown-pragmas 126.endif # IGNORE_PRAGMA 127 128# We need this conditional because many places that use it 129# only enable it for some files with CLFAGS.$FILE+=${CLANG_NO_IAS}. 130# unconditionally, and can't easily use the CFLAGS.clang= 131# mechanism. 132.if ${COMPILER_TYPE} == "clang" 133CLANG_NO_IAS= -no-integrated-as 134.endif 135CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\ 136 -mllvm -simplifycfg-dup-ret 137.if ${COMPILER_VERSION} >= 30500 && ${COMPILER_VERSION} < 30700 138CLANG_OPT_SMALL+= -mllvm -enable-gvn=false 139.else 140CLANG_OPT_SMALL+= -mllvm -enable-load-pre=false 141.endif 142CFLAGS.clang+= -Qunused-arguments 143.if ${MACHINE_CPUARCH} == "sparc64" 144# Don't emit .cfi directives, since we must use GNU as on sparc64, for now. 145CFLAGS.clang+= -fno-dwarf2-cfi-asm 146.endif # SPARC64 147# The libc++ headers use c++11 extensions. These are normally silenced because 148# they are treated as system headers, but we explicitly disable that warning 149# suppression when building the base system to catch bugs in our headers. 150# Eventually we'll want to start building the base system C++ code as C++11, 151# but not yet. 152CXXFLAGS.clang+= -Wno-c++11-extensions 153 154.if ${MK_SSP} != "no" && \ 155 ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips" 156.if (${COMPILER_TYPE} == "clang" && ${COMPILER_VERSION} >= 30500) || \ 157 (${COMPILER_TYPE} == "gcc" && \ 158 (${COMPILER_VERSION} == 40201 || ${COMPILER_VERSION} >= 40900)) 159# Don't use -Wstack-protector as it breaks world with -Werror. 160SSP_CFLAGS?= -fstack-protector-strong 161.else 162SSP_CFLAGS?= -fstack-protector 163.endif 164CFLAGS+= ${SSP_CFLAGS} 165.endif # SSP && !ARM && !MIPS 166 167# Allow user-specified additional warning flags, plus compiler and file 168# specific flag overrides, unless we've overriden this... 169.if ${MK_WARNS} != "no" 170CFLAGS+= ${CWARNFLAGS} ${CWARNFLAGS.${COMPILER_TYPE}} 171CFLAGS+= ${CWARNFLAGS.${.IMPSRC:T}} 172.endif 173 174CFLAGS+= ${CFLAGS.${COMPILER_TYPE}} 175CXXFLAGS+= ${CXXFLAGS.${COMPILER_TYPE}} 176 177# Tell bmake not to mistake standard targets for things to be searched for 178# or expect to ever be up-to-date. 179PHONY_NOTMAIN = analyze afterdepend afterinstall all beforedepend beforeinstall \ 180 beforelinking build build-tools buildconfig buildfiles \ 181 buildincludes check checkdpadd clean cleandepend cleandir \ 182 cleanobj configure depend distclean distribute exe \ 183 files html includes install installconfig installfiles \ 184 installincludes lint obj objlink objs objwarn \ 185 realinstall tags whereobj 186 187# we don't want ${PROG} to be PHONY 188.PHONY: ${PHONY_NOTMAIN:N${PROG:U}} 189.NOTMAIN: ${PHONY_NOTMAIN:Nall} 190 191.if ${MK_STAGING} != "no" 192.if defined(_SKIP_BUILD) || (!make(all) && !make(clean*)) 193_SKIP_STAGING?= yes 194.endif 195.if ${_SKIP_STAGING:Uno} == "yes" 196staging stage_libs stage_files stage_as stage_links stage_symlinks: 197.else 198# allow targets like beforeinstall to be leveraged 199DESTDIR= ${STAGE_OBJTOP} 200 201.if commands(beforeinstall) 202.if !empty(_LIBS) || (${MK_STAGING_PROG} != "no" && !defined(INTERNALPROG)) 203staging: beforeinstall 204.endif 205.endif 206 207# normally only libs and includes are staged 208.if ${MK_STAGING_PROG} != "no" && !defined(INTERNALPROG) 209STAGE_DIR.prog= ${STAGE_OBJTOP}${BINDIR} 210 211.if !empty(PROG) || !empty(PROGS) 212.if defined(PROGNAME) 213STAGE_AS_SETS+= prog 214STAGE_AS_${PROG}= ${PROGNAME} 215stage_as.prog: ${PROG} 216.else 217STAGE_SETS+= prog 218stage_files.prog: ${PROG} 219STAGE_TARGETS+= stage_files 220.endif 221.endif 222.endif 223 224.if !empty(_LIBS) && !defined(INTERNALLIB) 225.if defined(SHLIBDIR) && ${SHLIBDIR} != ${LIBDIR} && ${_LIBS:Uno:M*.so.*} != "" 226STAGE_SETS+= shlib 227STAGE_DIR.shlib= ${STAGE_OBJTOP}${SHLIBDIR} 228STAGE_FILES.shlib+= ${_LIBS:M*.so.*} 229stage_files.shlib: ${_LIBS:M*.so.*} 230.endif 231 232.if defined(SHLIB_LINK) && commands(${SHLIB_LINK:R}.ld) 233_LDSCRIPTROOT?= ${STAGE_OBJTOP} 234STAGE_AS_SETS+= ldscript 235STAGE_AS.ldscript+= ${SHLIB_LINK:R}.ld 236stage_as.ldscript: ${SHLIB_LINK:R}.ld 237STAGE_DIR.ldscript = ${STAGE_LIBDIR} 238STAGE_AS_${SHLIB_LINK:R}.ld:= ${SHLIB_LINK} 239NO_SHLIB_LINKS= 240.endif 241 242.if target(stage_files.shlib) 243stage_libs: ${_LIBS} 244.if defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols) 245stage_files.shlib: ${SHLIB_NAME}.symbols 246.endif 247.else 248stage_libs: ${_LIBS} 249.endif 250.if defined(SHLIB_NAME) && defined(DEBUG_FLAGS) && target(${SHLIB_NAME}.symbols) 251stage_libs: ${SHLIB_NAME}.symbols 252.endif 253 254.endif 255 256.if !empty(INCS) || !empty(INCSGROUPS) && target(buildincludes) 257.if !defined(NO_BEFOREBUILD_INCLUDES) 258stage_includes: buildincludes 259beforebuild: stage_includes 260.endif 261.endif 262 263.for t in stage_libs stage_files stage_as 264.if target($t) 265STAGE_TARGETS+= $t 266.endif 267.endfor 268 269.if !empty(STAGE_AS_SETS) 270STAGE_TARGETS+= stage_as 271.endif 272 273.if !empty(_LIBS) || (${MK_STAGING_PROG} != "no" && !defined(INTERNALPROG)) 274 275.if !empty(LINKS) 276STAGE_TARGETS+= stage_links 277.if ${MAKE_VERSION} < 20131001 278stage_links.links: ${_LIBS} ${PROG} 279.endif 280STAGE_SETS+= links 281STAGE_LINKS.links= ${LINKS} 282.endif 283 284.if !empty(SYMLINKS) 285STAGE_TARGETS+= stage_symlinks 286STAGE_SETS+= links 287STAGE_SYMLINKS.links= ${SYMLINKS} 288.endif 289 290.endif 291 292.include <meta.stage.mk> 293.endif 294.endif 295 296