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") 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# Activate gcc47's -Wunused-but-set-variable (which is in -Wall) and 69# -Wunused-but-set-parameter (which is in -Wextra) only at WARNS >= 4 70# (which is the level when also -Wunused-parameter comes into play). 71. if ${WARNS} >= 2 && ${WARNS} <= 3 && ${_WCCVER:Mgcc*} 72_cnowarnflags += -Wno-unused-but-set-variable 73. endif 74. if ${WARNS} == 3 && ${_WCCVER:Mgcc*} 75_cnowarnflags += -Wno-unused-but-set-parameter 76. endif 77. if ${WARNS} == 3 && (${_WCCVER:Mgcc49} || ${_WCCVER:Mgcc[5-]*}) 78_cnowarnflags += -Wno-unused-value 79. endif 80. if ${WARNS} >= 2 && ${_WCCVER:Mgcc4[789]} 81_cnowarnflags += -Wno-error=maybe-uninitialized\ 82 -Wno-error=uninitialized\ 83 -Wno-error=shadow 84. endif 85# Disable -Werror selectively for -Os and -Og compilations. Both -Winline and 86# -Wmaybe-uninitialized are noisy and should be caught by standard -O and -O2. 87# These are still useful diagnostics while investigating compilation issues. 88. if defined(WORLD_CCOPTLEVEL) && (${WORLD_CCOPTLEVEL:Mg} || ${WORLD_CCOPTLEVEL:Ms}) 89. if ${WARNS} >= 6 90CWARNFLAGS += -Wno-error=inline 91. endif 92. if ${WARNS} >= 5 && ${_WCCVER:Mgcc*} 93CWARNFLAGS += -Wno-error=maybe-uninitialized 94. endif 95. endif 96. endif 97 98. if defined(FORMAT_AUDIT) 99WFORMAT = 1 100. endif 101. if defined(WFORMAT) 102. if ${WFORMAT} > 0 103CWARNFLAGS += -Wformat=2 104. if !defined(NO_WERROR) && (${_WCCVER} == "gcc47" || ${_WCCVER} == "gcc50") 105CWARNFLAGS += -Werror 106. endif 107. endif 108. endif 109.endif 110 111.if defined(NO_WCAST_FUNCTION_TYPE) && ${WARNS} >= 3 && ${_WCCVER:Mgcc8*} 112_cnowarnflags += -Wno-cast-function-type 113.endif 114.if defined(NO_WARRAY_BOUNDS) 115_cnowarnflags += -Wno-array-bounds 116.endif 117.if defined(NO_STRICT_OVERFLOW) 118CFLAGS += -fno-strict-overflow 119.endif 120.if defined(NO_STRICT_ALIASING) 121CFLAGS += -fno-strict-aliasing 122.endif 123 124 125# Add -Wno-foo flags last 126.if !defined(WARNS_AUDIT) 127CWARNFLAGS += ${_cnowarnflags} 128.endif 129 130# Allow user-specified additional warning flags 131CFLAGS += ${CWARNFLAGS} 132 133# Tell bmake not to mistake standard targets for things to be searched for 134# or expect to ever be up-to-date 135PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \ 136 beforelinking build build-tools buildfiles buildincludes \ 137 checkdpadd clean cleandepend cleandir cleanobj configure \ 138 depend dependall distclean distribute exe extract fetch \ 139 html includes install installfiles installincludes lint \ 140 obj objlink objs objwarn patch realall realdepend \ 141 realinstall regress subdir-all subdir-depend subdir-install \ 142 tags whereobj 143 144# if given PROG matches anything in the PHONY list, exclude it. 145.PHONY: ${PHONY_NOTMAIN:N${PROG:U}} 146.NOTMAIN: ${PHONY_NOTMAIN} 147