1# $FreeBSD: src/share/mk/bsd.sys.mk,v 1.3.2.5 2002/07/03 16:59:14 des Exp $ 2# 3# This file contains common settings used for building DragonFly 4# sources. 5 6# Support handling -W flags for both host cc and target cc. 7.if defined(__USE_HOST_CCVER) 8_WCCVER= ${HOST_CCVER} 9.else 10_WCCVER= ${CCVER} 11.endif 12 13CSTD?= gnu99 14 15.if ${CSTD} == "k&r" 16CFLAGS += -traditional 17.elif ${CSTD} == "c89" || ${CSTD} == "c90" 18CFLAGS += -std=iso9899:1990 19.elif ${CSTD} == "c94" || ${CSTD} == "c95" 20CFLAGS += -std=iso9899:199409 21.elif ${CSTD} == "c99" 22CFLAGS += -std=iso9899:1999 23.else 24CFLAGS += -std=${CSTD} 25.endif 26 27# Explicitly clear _cnowarnflags (should not be used in Makefiles). 28_cnowarnflags= 29 30# Enable various levels of compiler warning checks. These may be 31# overridden (e.g. if using a non-gcc compiler) by defining NO_WARNS. 32 33.if !defined(NO_WARNS) 34. if defined(WARNS) 35. if ${WARNS} >= 1 36CWARNFLAGS += -Wmissing-include-dirs -Wsystem-headers 37. if !defined(NO_WERROR) && (${_WCCVER} == "gcc47" || ${_WCCVER} == "gcc50" || ${_WCCVER} == "gcc80") 38CWARNFLAGS += -Werror 39. endif 40. endif 41. if ${WARNS} >= 2 42CWARNFLAGS += -Wall -Wformat-security -Winit-self 43_cnowarnflags += -Wno-pointer-sign 44. endif 45. if ${WARNS} >= 3 46CWARNFLAGS += -Wextra -Wstrict-prototypes\ 47 -Wmissing-prototypes -Wpointer-arith\ 48 -Wold-style-definition 49_cnowarnflags += -Wno-unused-parameter 50. endif 51. if ${WARNS} >= 4 52CWARNFLAGS += -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch\ 53 -Wshadow -Wcast-align -Wunused-parameter 54. endif 55. if ${WARNS} >= 6 56CWARNFLAGS += -Wchar-subscripts -Winline -Wnested-externs\ 57 -Wredundant-decls 58. endif 59. if ${WARNS} >= 2 && ${WARNS} <= 4 60# XXX Delete -Wmaybe-uninitialized by default for now -- the compiler doesn't 61# XXX always get it right. 62. if ${_WCCVER:Mgcc*} 63_cnowarnflags += -Wno-maybe-uninitialized 64. else 65_cnowarnflags += -Wno-uninitialized 66. endif 67. endif 68# Delete -Wformat-* family that give little benefits, same for stringop. 69. if ${WARNS} >= 2 && ${WARNS} <= 6 && ${_WCCVER:Mgcc8*} 70_cnowarnflags += -Wno-format-overflow -Wno-format-truncation 71_cnowarnflags += -Wno-stringop-truncation 72. endif 73. if ${WARNS} >= 1 && ${WARNS} <= 6 && ${_WCCVER:Mgcc8*} 74_cnowarnflags += -Wno-stringop-overflow 75. endif 76# Activate gcc47's -Wunused-but-set-variable (which is in -Wall) and 77# -Wunused-but-set-parameter (which is in -Wextra) only at WARNS >= 4 78# (which is the level when also -Wunused-parameter comes into play). 79. if ${WARNS} >= 2 && ${WARNS} <= 3 && ${_WCCVER:Mgcc*} 80_cnowarnflags += -Wno-unused-but-set-variable 81. endif 82. if ${WARNS} == 3 && ${_WCCVER:Mgcc*} 83_cnowarnflags += -Wno-unused-but-set-parameter 84. endif 85. if ${WARNS} == 3 && (${_WCCVER:Mgcc49} || ${_WCCVER:Mgcc[5-]*}) 86_cnowarnflags += -Wno-unused-value 87. endif 88. if ${WARNS} == 3 && ${_WCCVER:Mgcc8*} 89_cnowarnflags += -Wno-implicit-fallthrough 90. endif 91. if ${WARNS} >= 2 && ${_WCCVER:Mgcc4[789]} 92_cnowarnflags += -Wno-error=maybe-uninitialized\ 93 -Wno-error=uninitialized\ 94 -Wno-error=shadow 95. endif 96# Disable -Werror selectively for -Os and -Og compilations. Both -Winline and 97# -Wmaybe-uninitialized are noisy and should be caught by standard -O and -O2. 98# These are still useful diagnostics while investigating compilation issues. 99. if defined(WORLD_CCOPTLEVEL) && (${WORLD_CCOPTLEVEL:Mg} || ${WORLD_CCOPTLEVEL:Ms}) 100. if ${WARNS} >= 6 101CWARNFLAGS += -Wno-error=inline 102. endif 103. if ${WARNS} >= 5 && ${_WCCVER:Mgcc*} 104CWARNFLAGS += -Wno-error=maybe-uninitialized 105. endif 106. endif 107. endif 108 109. if defined(FORMAT_AUDIT) 110WFORMAT = 1 111. endif 112. if defined(WFORMAT) 113. if ${WFORMAT} > 0 114CWARNFLAGS += -Wformat=2 115. if !defined(NO_WERROR) && (${_WCCVER} == "gcc47" || ${_WCCVER} == "gcc50") 116CWARNFLAGS += -Werror 117. endif 118. endif 119. endif 120.endif 121 122.if defined(NO_WCAST_FUNCTION_TYPE) && ${WARNS} >= 3 && ${_WCCVER:Mgcc8*} 123_cnowarnflags += -Wno-cast-function-type 124.endif 125.if defined(NO_WARRAY_BOUNDS) 126_cnowarnflags += -Wno-array-bounds 127.endif 128.if defined(NO_STRICT_OVERFLOW) 129CFLAGS += -fno-strict-overflow 130.endif 131.if defined(NO_STRICT_ALIASING) 132CFLAGS += -fno-strict-aliasing 133.endif 134 135 136# Add -Wno-foo flags last 137.if !defined(WARNS_AUDIT) 138CWARNFLAGS += ${_cnowarnflags} 139.endif 140 141# Allow user-specified additional warning flags 142CFLAGS += ${CWARNFLAGS} 143 144# Tell bmake not to mistake standard targets for things to be searched for 145# or expect to ever be up-to-date 146PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \ 147 beforelinking build build-tools buildfiles buildincludes \ 148 checkdpadd clean cleandepend cleandir cleanobj configure \ 149 depend dependall distclean distribute exe extract fetch \ 150 html includes install installfiles installincludes lint \ 151 obj objlink objs objwarn patch realall realdepend \ 152 realinstall regress subdir-all subdir-depend subdir-install \ 153 tags whereobj 154 155# if given PROG matches anything in the PHONY list, exclude it. 156.PHONY: ${PHONY_NOTMAIN:N${PROG:U}} 157.NOTMAIN: ${PHONY_NOTMAIN} 158