bsd.sys.mk revision 262964
139665Smsmith# $FreeBSD: stable/10/share/mk/bsd.sys.mk 262964 2014-03-09 23:47:34Z ache $ 239665Smsmith# 339665Smsmith# This file contains common settings used for building FreeBSD 439665Smsmith# sources. 539665Smsmith 639665Smsmith# Enable various levels of compiler warning checks. These may be 739665Smsmith# overridden (e.g. if using a non-gcc compiler) by defining NO_WARNS. 839665Smsmith 939665Smsmith# for GCC: http://gcc.gnu.org/onlinedocs/gcc-4.2.1/gcc/Warning-Options.html 1039665Smsmith 1139665Smsmith.include <bsd.compiler.mk> 1239665Smsmith 1339665Smsmith# the default is gnu99 for now 1439665SmsmithCSTD?= gnu99 1539665Smsmith 1639665Smsmith.if ${CSTD} == "k&r" 1739665SmsmithCFLAGS+= -traditional 1839665Smsmith.elif ${CSTD} == "c89" || ${CSTD} == "c90" 1939665SmsmithCFLAGS+= -std=iso9899:1990 2039665Smsmith.elif ${CSTD} == "c94" || ${CSTD} == "c95" 2139665SmsmithCFLAGS+= -std=iso9899:199409 2239665Smsmith.elif ${CSTD} == "c99" 2339665SmsmithCFLAGS+= -std=iso9899:1999 2439665Smsmith.else # CSTD 2539665SmsmithCFLAGS+= -std=${CSTD} 2639665Smsmith.endif # CSTD 2784221Sdillon.if !defined(NO_WARNS) 2884221Sdillon# -pedantic is problematic because it also imposes namespace restrictions 2984221Sdillon#CFLAGS+= -pedantic 3039665Smsmith.if defined(WARNS) 3139665Smsmith.if ${WARNS} >= 1 3239665SmsmithCWARNFLAGS+= -Wsystem-headers 3339665Smsmith.if !defined(NO_WERROR) && (${COMPILER_TYPE} != "clang" \ 3439665Smsmith || !defined(NO_WERROR.clang)) 3539665SmsmithCWARNFLAGS+= -Werror 3639665Smsmith.endif # !NO_WERROR && (!CLANG || !NO_WERROR.clang) 3739665Smsmith.endif # WARNS >= 1 3839665Smsmith.if ${WARNS} >= 2 3939665SmsmithCWARNFLAGS+= -Wall -Wno-format-y2k 4039665Smsmith.endif # WARNS >= 2 4139665Smsmith.if ${WARNS} >= 3 4239665SmsmithCWARNFLAGS+= -W -Wno-unused-parameter -Wstrict-prototypes\ 4360481Speter -Wmissing-prototypes -Wpointer-arith 4460481Speter.endif # WARNS >= 3 4560481Speter.if ${WARNS} >= 4 4639665SmsmithCWARNFLAGS+= -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow\ 4739665Smsmith -Wunused-parameter 4839665Smsmith.if !defined(NO_WCAST_ALIGN) && (${COMPILER_TYPE} != "clang" \ 4939665Smsmith || !defined(NO_WCAST_ALIGN.clang)) 5039665SmsmithCWARNFLAGS+= -Wcast-align 5139665Smsmith.endif # !NO_WCAST_ALIGN && (!CLANG || !NO_WCAST_ALIGN.clang) 5239665Smsmith.endif # WARNS >= 4 5339665Smsmith# BDECFLAGS 5439665Smsmith.if ${WARNS} >= 6 5539665SmsmithCWARNFLAGS+= -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls\ 5639665Smsmith -Wold-style-definition 5739665Smsmith.if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD) && \ 5839665Smsmith !defined(NO_WMISSING_VARIABLE_DECLARATIONS) 5939665SmsmithCWARNFLAGS+= -Wmissing-variable-declarations 6039665Smsmith.endif 6139665Smsmith.endif # WARNS >= 6 6239665Smsmith.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-enum-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 !defined(EARLY_BUILD) 118.if ${COMPILER_TYPE} == "clang" 119CLANG_NO_IAS= -no-integrated-as 120CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\ 121 -mllvm -enable-load-pre=false -mllvm -simplifycfg-dup-ret 122CFLAGS+= -Qunused-arguments 123# The libc++ headers use c++11 extensions. These are normally silenced because 124# they are treated as system headers, but we explicitly disable that warning 125# suppression when building the base system to catch bugs in our headers. 126# Eventually we'll want to start building the base system C++ code as C++11, 127# but not yet. 128CXXFLAGS+= -Wno-c++11-extensions 129CFLAGS+= ${CFLAGS.clang} 130CXXFLAGS+= ${CXXFLAGS.clang} 131.else # !CLANG 132GCC_MS_EXTENSIONS= -fms-extensions 133CFLAGS+= ${CFLAGS.gcc} 134CXXFLAGS+= ${CXXFLAGS.gcc} 135.endif # CLANG 136.endif # !EARLY_BUILD 137 138.if ${MK_SSP} != "no" && ${MACHINE_CPUARCH} != "ia64" && \ 139 ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips" 140# Don't use -Wstack-protector as it breaks world with -Werror. 141SSP_CFLAGS?= -fstack-protector 142CFLAGS+= ${SSP_CFLAGS} 143.endif # SSP && !IA64 && !ARM && !MIPS 144 145# Allow user-specified additional warning flags 146CFLAGS+= ${CWARNFLAGS} 147 148 149# Tell bmake not to mistake standard targets for things to be searched for 150# or expect to ever be up-to-date. 151PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \ 152 beforelinking build build-tools buildfiles buildincludes \ 153 checkdpadd clean cleandepend cleandir cleanobj configure \ 154 depend dependall distclean distribute exe extract \ 155 html includes install installfiles installincludes lint \ 156 obj objlink objs objwarn realall realdepend \ 157 realinstall regress subdir-all subdir-depend subdir-install \ 158 tags whereobj 159 160.if defined(PORTNAME) 161PHONY_NOTMAIN+= fetch patch 162.endif 163 164.PHONY: ${PHONY_NOTMAIN} 165.NOTMAIN: ${PHONY_NOTMAIN} 166