bsd.sys.mk revision 260495
1164190Sjkoshy# $FreeBSD: stable/10/share/mk/bsd.sys.mk 260495 2014-01-09 22:40:51Z dim $ 2164190Sjkoshy# 3164190Sjkoshy# This file contains common settings used for building FreeBSD 4164190Sjkoshy# sources. 5164190Sjkoshy 6164190Sjkoshy# Enable various levels of compiler warning checks. These may be 7164190Sjkoshy# overridden (e.g. if using a non-gcc compiler) by defining NO_WARNS. 8164190Sjkoshy 9164190Sjkoshy# for GCC: http://gcc.gnu.org/onlinedocs/gcc-4.2.1/gcc/Warning-Options.html 10164190Sjkoshy 11164190Sjkoshy.include <bsd.compiler.mk> 12164190Sjkoshy 13164190Sjkoshy# the default is gnu99 for now 14164190SjkoshyCSTD?= gnu99 15164190Sjkoshy 16164190Sjkoshy.if ${CSTD} == "k&r" 17164190SjkoshyCFLAGS+= -traditional 18164190Sjkoshy.elif ${CSTD} == "c89" || ${CSTD} == "c90" 19164190SjkoshyCFLAGS+= -std=iso9899:1990 20164190Sjkoshy.elif ${CSTD} == "c94" || ${CSTD} == "c95" 21164190SjkoshyCFLAGS+= -std=iso9899:199409 22164190Sjkoshy.elif ${CSTD} == "c99" 23164190SjkoshyCFLAGS+= -std=iso9899:1999 24164190Sjkoshy.else # CSTD 25164190SjkoshyCFLAGS+= -std=${CSTD} 26164190Sjkoshy.endif # CSTD 27206622Suqs.if !defined(NO_WARNS) 28164190Sjkoshy# -pedantic is problematic because it also imposes namespace restrictions 29164190Sjkoshy#CFLAGS+= -pedantic 30164190Sjkoshy.if defined(WARNS) 31164190Sjkoshy.if ${WARNS} >= 1 32164190SjkoshyCWARNFLAGS+= -Wsystem-headers 33164190Sjkoshy.if !defined(NO_WERROR) && (${COMPILER_TYPE} != "clang" \ 34164190Sjkoshy || !defined(NO_WERROR.clang)) 35164190SjkoshyCWARNFLAGS+= -Werror 36164190Sjkoshy.endif # !NO_WERROR && (!CLANG || !NO_WERROR.clang) 37164190Sjkoshy.endif # WARNS >= 1 38164190Sjkoshy.if ${WARNS} >= 2 39164190SjkoshyCWARNFLAGS+= -Wall -Wno-format-y2k 40164190Sjkoshy.endif # WARNS >= 2 41164190Sjkoshy.if ${WARNS} >= 3 42164190SjkoshyCWARNFLAGS+= -W -Wno-unused-parameter -Wstrict-prototypes\ 43164190Sjkoshy -Wmissing-prototypes -Wpointer-arith 44164190Sjkoshy.endif # WARNS >= 3 45164190Sjkoshy.if ${WARNS} >= 4 46164190SjkoshyCWARNFLAGS+= -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow\ 47164190Sjkoshy -Wunused-parameter 48164190Sjkoshy.if !defined(NO_WCAST_ALIGN) && (${COMPILER_TYPE} != "clang" \ 49164190Sjkoshy || !defined(NO_WCAST_ALIGN.clang)) 50164190SjkoshyCWARNFLAGS+= -Wcast-align 51164190Sjkoshy.endif # !NO_WCAST_ALIGN && (!CLANG || !NO_WCAST_ALIGN.clang) 52164190Sjkoshy.endif # WARNS >= 4 53164190Sjkoshy# BDECFLAGS 54164190Sjkoshy.if ${WARNS} >= 6 55164190SjkoshyCWARNFLAGS+= -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls\ 56164190Sjkoshy -Wold-style-definition 57164190Sjkoshy.if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD) && \ 58164190Sjkoshy !defined(NO_WMISSING_VARIABLE_DECLARATIONS) 59164190SjkoshyCWARNFLAGS+= -Wmissing-variable-declarations 60164190Sjkoshy.endif 61164190Sjkoshy.endif # WARNS >= 6 62164190Sjkoshy.if ${WARNS} >= 2 && ${WARNS} <= 4 63164190Sjkoshy# XXX Delete -Wuninitialized by default for now -- the compiler doesn't 64164190Sjkoshy# XXX always get it right. 65164190SjkoshyCWARNFLAGS+= -Wno-uninitialized 66164190Sjkoshy.endif # WARNS >=2 && WARNS <= 4 67164190SjkoshyCWARNFLAGS+= -Wno-pointer-sign 68164190Sjkoshy# Clang has more warnings enabled by default, and when using -Wall, so if WARNS 69164190Sjkoshy# is set to low values, these have to be disabled explicitly. 70164190Sjkoshy.if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD) 71164190Sjkoshy.if ${WARNS} <= 6 72164190SjkoshyCWARNFLAGS+= -Wno-empty-body -Wno-string-plus-int 73164190Sjkoshy.endif # WARNS <= 6 74164190Sjkoshy.if ${WARNS} <= 3 75164190SjkoshyCWARNFLAGS+= -Wno-tautological-compare -Wno-unused-value\ 76164190Sjkoshy -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion 77164190Sjkoshy.endif # WARNS <= 3 78164190Sjkoshy.if ${WARNS} <= 2 79164190SjkoshyCWARNFLAGS+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter 80164190Sjkoshy.endif # WARNS <= 2 81164190Sjkoshy.if ${WARNS} <= 1 82164190SjkoshyCWARNFLAGS+= -Wno-parentheses 83164190Sjkoshy.endif # WARNS <= 1 84164190Sjkoshy.if defined(NO_WARRAY_BOUNDS) 85164190SjkoshyCWARNFLAGS+= -Wno-array-bounds 86164190Sjkoshy.endif # NO_WARRAY_BOUNDS 87164190Sjkoshy.endif # CLANG 88164190Sjkoshy.endif # WARNS 89164190Sjkoshy 90164190Sjkoshy.if defined(FORMAT_AUDIT) 91164190SjkoshyWFORMAT= 1 92164190Sjkoshy.endif # FORMAT_AUDIT 93164190Sjkoshy.if defined(WFORMAT) 94164190Sjkoshy.if ${WFORMAT} > 0 95164190Sjkoshy#CWARNFLAGS+= -Wformat-nonliteral -Wformat-security -Wno-format-extra-args 96164190SjkoshyCWARNFLAGS+= -Wformat=2 -Wno-format-extra-args 97164190Sjkoshy.if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD) 98164190Sjkoshy.if ${WARNS} <= 3 99164190SjkoshyCWARNFLAGS+= -Wno-format-nonliteral 100164190Sjkoshy.endif # WARNS <= 3 101164190Sjkoshy.endif # CLANG 102164190Sjkoshy.if !defined(NO_WERROR) && (${COMPILER_TYPE} != "clang" \ 103164190Sjkoshy || !defined(NO_WERROR.clang)) 104164190SjkoshyCWARNFLAGS+= -Werror 105164190Sjkoshy.endif # !NO_WERROR && (!CLANG || !NO_WERROR.clang) 106164190Sjkoshy.endif # WFORMAT > 0 107164190Sjkoshy.endif # WFORMAT 108164190Sjkoshy.if defined(NO_WFORMAT) || (${COMPILER_TYPE} == "clang" && defined(NO_WFORMAT.clang)) 109164190SjkoshyCWARNFLAGS+= -Wno-format 110164190Sjkoshy.endif # NO_WFORMAT || (CLANG && NO_WFORMAT.clang) 111164190Sjkoshy.endif # !NO_WARNS 112164190Sjkoshy 113164190Sjkoshy.if defined(IGNORE_PRAGMA) 114164190SjkoshyCWARNFLAGS+= -Wno-unknown-pragmas 115164190Sjkoshy.endif # IGNORE_PRAGMA 116164190Sjkoshy 117164190Sjkoshy.if !defined(EARLY_BUILD) 118164190Sjkoshy.if ${COMPILER_TYPE} == "clang" 119164190SjkoshyCLANG_NO_IAS= -no-integrated-as 120164190SjkoshyCLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\ 121164190Sjkoshy -mllvm -enable-load-pre=false -mllvm -simplifycfg-dup-ret 122CFLAGS+= -Qunused-arguments 123CFLAGS+= ${CFLAGS.clang} 124CXXFLAGS+= ${CXXFLAGS.clang} 125.else # !CLANG 126GCC_MS_EXTENSIONS= -fms-extensions 127CFLAGS+= ${CFLAGS.gcc} 128CXXFLAGS+= ${CXXFLAGS.gcc} 129.endif # CLANG 130.endif # !EARLY_BUILD 131 132.if ${MK_SSP} != "no" && ${MACHINE_CPUARCH} != "ia64" && \ 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 && !IA64 && !ARM && !MIPS 138 139# Allow user-specified additional warning flags 140CFLAGS+= ${CWARNFLAGS} 141 142 143# Tell bmake not to mistake standard targets for things to be searched for 144# or expect to ever be up-to-date. 145PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \ 146 beforelinking build build-tools buildfiles buildincludes \ 147 checkdpadd clean cleandepend cleandir cleanobj configure \ 148 depend dependall distclean distribute exe extract fetch \ 149 html includes install installfiles installincludes lint \ 150 obj objlink objs objwarn patch realall realdepend \ 151 realinstall regress subdir-all subdir-depend subdir-install \ 152 tags whereobj 153 154.PHONY: ${PHONY_NOTMAIN} 155.NOTMAIN: ${PHONY_NOTMAIN} 156