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 ${WARNS} >= 1 32CWARNFLAGS+= -Wsystem-headers 33.if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE}) 34CWARNFLAGS+= -Werror 35.endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE} 36.endif # WARNS >= 1 37.if ${WARNS} >= 2 38CWARNFLAGS+= -Wall -Wno-format-y2k 39.endif # WARNS >= 2 40.if ${WARNS} >= 3 41CWARNFLAGS+= -W -Wno-unused-parameter -Wstrict-prototypes\ 42 -Wmissing-prototypes -Wpointer-arith 43.endif # WARNS >= 3 44.if ${WARNS} >= 4 45CWARNFLAGS+= -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow\ 46 -Wunused-parameter 47.if !defined(NO_WCAST_ALIGN) && !defined(NO_WCAST_ALIGN.${COMPILER_TYPE}) 48CWARNFLAGS+= -Wcast-align 49.endif # !NO_WCAST_ALIGN !NO_WCAST_ALIGN.${COMPILER_TYPE} 50.endif # WARNS >= 4 51# BDECFLAGS 52.if ${WARNS} >= 6 53CWARNFLAGS+= -Wchar-subscripts -Winline -Wnested-externs -Wredundant-decls\ 54 -Wold-style-definition 55.if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD) && \ 56 !defined(NO_WMISSING_VARIABLE_DECLARATIONS) 57CWARNFLAGS+= -Wmissing-variable-declarations 58.endif 59.endif # WARNS >= 6 60.if ${WARNS} >= 2 && ${WARNS} <= 4 61# XXX Delete -Wuninitialized by default for now -- the compiler doesn't 62# XXX always get it right. 63CWARNFLAGS+= -Wno-uninitialized 64.endif # WARNS >=2 && WARNS <= 4 65CWARNFLAGS+= -Wno-pointer-sign 66# Clang has more warnings enabled by default, and when using -Wall, so if WARNS 67# is set to low values, these have to be disabled explicitly. 68.if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD) 69.if ${WARNS} <= 6 70CWARNFLAGS+= -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable 71.endif # WARNS <= 6 72.if ${WARNS} <= 3 73CWARNFLAGS+= -Wno-tautological-compare -Wno-unused-value\ 74 -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion 75.endif # WARNS <= 3 76.if ${WARNS} <= 2 77CWARNFLAGS+= -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter 78.endif # WARNS <= 2 79.if ${WARNS} <= 1 80CWARNFLAGS+= -Wno-parentheses 81.endif # WARNS <= 1 82.if defined(NO_WARRAY_BOUNDS) 83CWARNFLAGS+= -Wno-array-bounds 84.endif # NO_WARRAY_BOUNDS 85.endif # CLANG 86.endif # WARNS 87 88.if defined(FORMAT_AUDIT) 89WFORMAT= 1 90.endif # FORMAT_AUDIT 91.if defined(WFORMAT) 92.if ${WFORMAT} > 0 93#CWARNFLAGS+= -Wformat-nonliteral -Wformat-security -Wno-format-extra-args 94CWARNFLAGS+= -Wformat=2 -Wno-format-extra-args 95.if ${COMPILER_TYPE} == "clang" && !defined(EARLY_BUILD) 96.if ${WARNS} <= 3 97CWARNFLAGS+= -Wno-format-nonliteral 98.endif # WARNS <= 3 99.endif # CLANG 100.if !defined(NO_WERROR) && !defined(NO_WERROR.${COMPILER_TYPE}) 101CWARNFLAGS+= -Werror 102.endif # !NO_WERROR && !NO_WERROR.${COMPILER_TYPE} 103.endif # WFORMAT > 0 104.endif # WFORMAT 105.if defined(NO_WFORMAT) || defined(NO_WFORMAT.${COMPILER_TYPE}) 106CWARNFLAGS+= -Wno-format 107.endif # NO_WFORMAT || NO_WFORMAT.${COMPILER_TYPE} 108.endif # !NO_WARNS 109 110.if defined(IGNORE_PRAGMA) 111CWARNFLAGS+= -Wno-unknown-pragmas 112.endif # IGNORE_PRAGMA 113 114.if !defined(EARLY_BUILD) 115.if ${COMPILER_TYPE} == "clang" 116CLANG_NO_IAS= -no-integrated-as 117CLANG_OPT_SMALL= -mstack-alignment=8 -mllvm -inline-threshold=3\ 118 -mllvm -enable-load-pre=false -mllvm -simplifycfg-dup-ret 119CFLAGS+= -Qunused-arguments 120.if ${MACHINE_CPUARCH} == "sparc64" 121# Don't emit .cfi directives, since we must use GNU as on sparc64, for now. 122CFLAGS+= -fno-dwarf2-cfi-asm 123.endif # SPARC64 124# The libc++ headers use c++11 extensions. These are normally silenced because 125# they are treated as system headers, but we explicitly disable that warning 126# suppression when building the base system to catch bugs in our headers. 127# Eventually we'll want to start building the base system C++ code as C++11, 128# but not yet. 129CXXFLAGS+= -Wno-c++11-extensions 130.endif # CLANG 131CFLAGS+= ${CFLAGS.${COMPILER_TYPE}} 132CXXFLAGS+= ${CXXFLAGS.${COMPILER_TYPE}} 133.endif # !EARLY_BUILD 134 135.if ${MK_SSP} != "no" && ${MACHINE_CPUARCH} != "ia64" && \ 136 ${MACHINE_CPUARCH} != "arm" && ${MACHINE_CPUARCH} != "mips" 137# Don't use -Wstack-protector as it breaks world with -Werror. 138SSP_CFLAGS?= -fstack-protector 139CFLAGS+= ${SSP_CFLAGS} 140.endif # SSP && !IA64 && !ARM && !MIPS 141 142# Allow user-specified additional warning flags 143CFLAGS+= ${CWARNFLAGS} 144 145 146# Tell bmake not to mistake standard targets for things to be searched for 147# or expect to ever be up-to-date. 148PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \ 149 beforelinking build build-tools buildfiles buildincludes \ 150 checkdpadd clean cleandepend cleandir cleanobj configure \ 151 depend dependall distclean distribute exe extract \ 152 html includes install installfiles installincludes lint \ 153 obj objlink objs objwarn realall realdepend \ 154 realinstall regress subdir-all subdir-depend subdir-install \ 155 tags whereobj 156 157.if defined(PORTNAME) 158PHONY_NOTMAIN+= fetch patch 159.endif 160 161.PHONY: ${PHONY_NOTMAIN} 162.NOTMAIN: ${PHONY_NOTMAIN} 163