share/mk/bsd.sys.mk

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