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 # Enable various levels of compiler warning checks.  These may be
  21 # overridden (e.g. if using a non-gcc compiler) by defining NO_WARNS.
  22
  23 .if !defined(NO_WARNS)
  24 . if defined(WARNS)
  25 .  if ${WARNS} >= 1
  26 CWARNFLAGS      +=      -Wmissing-include-dirs -Wsystem-headers
  27 .   if !defined(NO_WERROR) && ${CCVER:Mgcc*}
  28 CWARNFLAGS      +=      -Werror
  29 .   endif
  30 .  endif
  31 .  if ${WARNS} >= 2
  32 CWARNFLAGS      +=      -Wall -Wformat-security -Winit-self -Wno-pointer-sign
  33 .  endif
  34 .  if ${WARNS} >= 3
  35 CWARNFLAGS      +=      -Wextra -Wno-unused-parameter -Wstrict-prototypes\
  36                         -Wmissing-prototypes -Wpointer-arith\
  37                         -Wold-style-definition
  38 .  endif
  39 .  if ${WARNS} >= 4
  40 CWARNFLAGS      +=      -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch\
  41                         -Wshadow -Wcast-align -Wunused-parameter
  42 .  endif
  43 .  if ${WARNS} >= 6
  44 CWARNFLAGS      +=      -Wchar-subscripts -Winline -Wnested-externs\
  45                         -Wredundant-decls
  46 .  endif
  47 .  if ${WARNS} >= 2 && ${WARNS} <= 4
  48 # XXX Delete -Wmaybe-uninitialized by default for now -- the compiler doesn't
  49 # XXX always get it right.
  50 .   if ${CCVER:Mgcc*}
  51 CWARNFLAGS      +=      -Wno-maybe-uninitialized
  52 .   else
  53 CWARNFLAGS      +=      -Wno-uninitialized
  54 .   endif
  55 .  endif
  56 # Activate gcc47's -Wunused-but-set-variable (which is in -Wall) and
  57 # -Wunused-but-set-parameter (which is in -Wextra) only at WARNS >= 4
  58 # (which is the level when also -Wunused-parameter comes into play).
  59 # unused-local-typedef warnings were introduced by gcc4.8, are in -Wall
  60 .  if ${WARNS} >= 2 && ${WARNS} <= 3 && ${CCVER:Mgcc*}
  61 CWARNFLAGS      +=      -Wno-unused-but-set-variable
  62 .  endif
  63 .  if ${WARNS} == 3 && ${CCVER:Mgcc*}
  64 CWARNFLAGS      +=      -Wno-unused-but-set-parameter
  65 .  endif
  66 .  if ${WARNS} == 3 && (${CCVER:Mgcc4[89]} || ${CCVER:Mgcc5*})
  67 CWARNFLAGS      +=      -Wno-unused-local-typedefs
  68 .  endif
  69 .  if ${WARNS} == 3 && (${CCVER:Mgcc49} || ${CCVER:Mgcc5*})
  70 CWARNFLAGS      +=      -Wno-unused-value
  71 .  endif
  72 .  if ${WARNS} >= 2 && ${CCVER:Mgcc4[789]}
  73 CWARNFLAGS      +=      -Wno-error=maybe-uninitialized\
  74                         -Wno-error=uninitialized\
  75                         -Wno-error=shadow
  76 .  endif
  77 # Disable -Werror selectively for -Os and -Og compilations.  Both -Winline and
  78 # -Wmaybe-uninitialized are noisy and should be caught by standard -O and -O2.
  79 # These are still useful diagnostics while investigating compilation issues.
  80 .  if defined(WORLD_CCOPTLEVEL) && (${WORLD_CCOPTLEVEL:Mg} || ${WORLD_CCOPTLEVEL:Ms})
  81 .   if ${WARNS} >= 6
  82 CWARNFLAGS      +=      -Wno-error=inline
  83 .   endif
  84 .   if ${WARNS} >= 5 && ${CCVER:Mgcc*}
  85 CWARNFLAGS      +=      -Wno-error=maybe-uninitialized
  86 .   endif
  87 .  endif
  88 . endif
  89
  90 . if defined(FORMAT_AUDIT)
  91 WFORMAT         =       1
  92 . endif
  93 . if defined(WFORMAT)
  94 .  if ${WFORMAT} > 0
  95 CWARNFLAGS      +=      -Wformat=2 -Wno-format-extra-args
  96 .   if !defined(NO_WERROR) && ${CCVER:Mgcc*}
  97 CWARNFLAGS      +=      -Werror
  98 .   endif
  99 .  endif
 100 . endif
 101 .endif
 102
 103 .if defined(NO_WARRAY_BOUNDS)
 104 CWARNFLAGS      +=      -Wno-array-bounds
 105 .endif
 106 .if defined(NO_STRICT_OVERFLOW)
 107 CFLAGS          +=      -fno-strict-overflow
 108 .endif
 109 .if defined(NO_STRICT_ALIASING)
 110 CFLAGS          +=      -fno-strict-aliasing
 111 .endif
 112
 113
 114 # Allow user-specified additional warning flags
 115 CFLAGS          +=      ${CWARNFLAGS}
 116
 117 # Tell bmake not to mistake standard targets for things to be searched for
 118 # or expect to ever be up-to-date
 119 PHONY_NOTMAIN = afterdepend afterinstall all beforedepend beforeinstall \
 120         beforelinking build build-tools buildfiles buildincludes \
 121         checkdpadd clean cleandepend cleandir cleanobj configure \
 122         depend dependall distclean distribute exe extract fetch \
 123         html includes install installfiles installincludes lint \
 124         obj objlink objs objwarn patch realall realdepend \
 125         realinstall regress subdir-all subdir-depend subdir-install \
 126         tags whereobj
 127
 128 # if given PROG matches anything in the PHONY list, exclude it.
 129 .PHONY: ${PHONY_NOTMAIN:N${PROG:U}}
 130 .NOTMAIN: ${PHONY_NOTMAIN}