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# -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 -Wno-unused-const-variable 68.endif # WARNS <= 6 69.if ${WARNS} <= 3 70CWARNFLAGS.clang+= -Wno-tautological-compare -Wno-unused-value\ 71 -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion 72.endif # WARNS <= 3 73.if ${WARNS} <= 2 74CWARNFLAGS.clang+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter 75.endif # WARNS <= 2 76.if ${WARNS} <= 1 77CWARNFLAGS.clang+= -Wno-parentheses 78.endif # WARNS <= 1 79.if defined(NO_WARRAY_BOUNDS) 80CWARNFLAGS.clang+= -Wno-array-bounds 81.endif # NO_WARRAY_BOUNDS 82.endif # WARNS 83 84.if defined(FORMAT_AUDIT) 85WFORMAT= 1 86.endif # FORMAT_AUDIT 87.if defined(WFORMAT) 88.if ${WFORMAT} > 0 89#CWARNFLAGS+= -Wformat-nonliteral -Wformat-security -Wno-format-extra-args 90CWARNFLAGS+= -Wformat=2 -Wno-format-extra-args 91.if ${WARNS} <= 3 92CWARNFLAGS.clang+= -Wno-format-nonliteral 93.endif # WARNS <= 3 94.if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE}) 95CWARNFLAGS+= -Werror 96.endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE} 97.endif # WFORMAT > 0 98.endif # WFORMAT 99.if defined(NO_WFORMAT) || defined(NO_WFORMAT.${COMPILER_TYPE}) 100CWARNFLAGS+= -Wno-format 101.endif # NO_WFORMAT || NO_WFORMAT.${COMPILER_TYPE} 102 103.if defined(IGNORE_PRAGMA) 104CWARNFLAGS+= -Wno-unknown-pragmas 105.endif # IGNORE_PRAGMA 106 107.if ${COMPILER_TYPE} == "clang" 108# Would love to do this unconditionally, but can't due to its use in 109# kernel build coupled with CFLAGS.${TARGET} feature 110CLANG_NO_IAS= -no-integrated-as 111.endif 112CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\ 113 -mllvm -enable-load-pre=false -mllvm -simplifycfg-dup-ret 114CFLAGS.clang+= -Qunused-arguments 115.if ${MACHINE_CPUARCH} == "sparc64" 116# Don't emit .cfi directives, since we must use GNU as on sparc64, for now. 117CFLAGS.clang+= -fno-dwarf2-cfi-asm 118.endif # SPARC64 119# The libc++ headers use c++11 extensions. These are normally silenced because 120# they are treated as system headers, but we explicitly disable that warning 121# suppression when building the base system to catch bugs in our headers. 122# Eventually we'll want to start building the base system C++ code as C++11, 123# but not yet. 124CXXFLAGS.clang+= -Wno-c++11-extensions 125 126.if ${MK_SSP} != "no" && ${MACHINE_CPUARCH} != "ia64" && \ 127 ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips" 128# Don't use -Wstack-protector as it breaks world with -Werror. 129SSP_CFLAGS?= -fstack-protector 130CFLAGS+= ${SSP_CFLAGS} 131.endif # SSP && !IA64 && !ARM && !MIPS 132 133# Allow user-specified additional warning flags, plus compiler specific flag overrides. 134# Unless we're early in the build, in which case don't (which is lame, this should 135# be handled by NO_WARNS which needs to migrate to something else. 136.if !defined(NO_WARNS) && !defined(EARLY_BUILD) 137CFLAGS+= ${CWARNFLAGS} ${CWARNFLAGS.${COMPILER_TYPE}} 138.endif 139 140# Not sure this is 100% kosher, but I think that EARLY_BUILD must be only 141# defined when we're not building programs that use the CFLAGS.foo feature. 142.if !defined(EARLY_BUILD) 143CFLAGS+= ${CFLAGS.${COMPILER_TYPE}} 144CXXFLAGS+= ${CXXFLAGS.${COMPILER_TYPE}} 145.endif 146 147# Tell bmake not to mistake standard targets for things to be searched for 148# or expect to ever be up-to-date. 149PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \ 150 beforelinking build build-tools buildfiles buildincludes \ 151 checkdpadd clean cleandepend cleandir cleanobj configure \ 152 depend dependall distclean distribute exe extract \ 153 html includes install installfiles installincludes lint \ 154 obj objlink objs objwarn realall realdepend \ 155 realinstall regress subdir-all subdir-depend subdir-install \ 156 tags whereobj 157 158.if defined(PORTNAME) 159PHONY_NOTMAIN+= fetch patch 160.endif 161 162.PHONY: ${PHONY_NOTMAIN} 163.NOTMAIN: ${PHONY_NOTMAIN} 164