tools/build/options/makeman

   1 #!/bin/sh
   2 #
   3 # This file is in the public domain.
   4
   5 ident='$FreeBSD$'
   6
   7 #
   8 # usage: show { settings | options } ...
   9 #
  10 show()
  11 {
  12
  13         mode=$1; shift
  14         case ${mode} in
  15         settings)
  16                 yes_prefix=WITH
  17                 no_prefix=WITHOUT
  18                 ;;
  19         options)
  20                 yes_prefix=WITHOUT
  21                 no_prefix=WITH
  22                 ;;
  23         *)
  24                 echo "internal error" >/dev/stderr
  25                 exit 1
  26                 ;;
  27         esac
  28         (
  29                 cd ../../..
  30                 make "$@" showconfig SRCCONF=/dev/null __MAKE_CONF=/dev/null
  31         ) |
  32         while read var _ val; do
  33                 opt=${var#MK_}
  34                 case ${val} in
  35                 yes)
  36                         echo ${yes_prefix}_${opt}
  37                         ;;
  38                 no)
  39                         echo ${no_prefix}_${opt}
  40                         ;;
  41                 *)
  42                         echo "make showconfig broken" >/dev/stderr
  43                         exit 1
  44                         ;;
  45                 esac
  46         done
  47 }
  48
  49 main()
  50 {
  51
  52         trap 'rm -f _defcfg _config _config2 _deps _deps2' exit
  53         ident=${ident#$}
  54         ident=${ident% $}
  55         fbsdid='$'FreeBSD'$'
  56         cat <<EOF
  57 .\" DO NOT EDIT-- this file is automatically generated.
  58 .\" from ${ident}
  59 .\" ${fbsdid}
  60 .Dd $(LC_TIME=C date +'%B %e, %Y')
  61 .Dt SRC.CONF 5
  62 .Os
  63 .Sh NAME
  64 .Nm src.conf
  65 .Nd "source build options"
  66 .Sh DESCRIPTION
  67 The
  68 .Nm
  69 file contains settings that will apply to every build involving the
  70 .Fx
  71 source tree; see
  72 .Xr build 7 .
  73 .Pp
  74 The
  75 .Nm
  76 file uses the standard makefile syntax.
  77 However,
  78 .Nm
  79 should not specify any dependencies to
  80 .Xr make 1 .
  81 Instead,
  82 .Nm
  83 is to set
  84 .Xr make 1
  85 variables that control the aspects of how the system builds.
  86 .Pp
  87 The default location of
  88 .Nm
  89 is
  90 .Pa /etc/src.conf ,
  91 though an alternative location can be specified in the
  92 .Xr make 1
  93 variable
  94 .Va SRCCONF .
  95 Overriding the location of
  96 .Nm
  97 may be necessary if the system-wide settings are not suitable
  98 for a particular build.
  99 For instance, setting
 100 .Va SRCCONF
 101 to
 102 .Pa /dev/null
 103 effectively resets all build controls to their defaults.
 104 .Pp
 105 The only purpose of
 106 .Nm
 107 is to control the compilation of the
 108 .Fx
 109 source code, which is usually located in
 110 .Pa /usr/src .
 111 As a rule, the system administrator creates
 112 .Nm
 113 when the values of certain control variables need to be changed
 114 from their defaults.
 115 .Pp
 116 In addition, control variables can be specified
 117 for a particular build via the
 118 .Fl D
 119 option of
 120 .Xr make 1
 121 or in environment; see
 122 .Xr environ 7 .
 123 .Pp
 124 The values of variables are ignored regardless of their setting;
 125 even if they would be set to
 126 .Dq Li FALSE
 127 or
 128 .Dq Li NO .
 129 Just the existence of an option will cause
 130 it to be honoured by
 131 .Xr make 1 .
 132 .Pp
 133 The following list provides a name and short description for variables
 134 that can be used for source builds.
 135 .Bl -tag -width indent
 136 EOF
 137         show settings |sort >_defcfg
 138         show options |
 139         while read opt; do
 140                 if [ -f ${opt} ]; then
 141                         cat <<EOF
 142 .It Va ${opt}
 143 EOF
 144                         sed -e's/\$\(FreeBSD: .*\) \$/from \1/' ${opt}
 145                 else
 146                         echo "no description found for ${opt}, skipping" >/dev/stderr
 147                         continue
 148                 fi
 149                 show settings -D${opt} |sort >_config
 150                 comm -13 _defcfg _config |grep -v "^${opt}$" >_deps
 151                 if [ -s _deps ]; then
 152                         cat <<EOF
 153 When set, it also enforces the following options:
 154 .Pp
 155 .Bl -item -compact
 156 EOF
 157                         cat _deps |while read opt2; do
 158                                 cat <<EOF
 159 .It
 160 .Va ${opt2}
 161 EOF
 162                                 show settings -D${opt} $(
 163                                     echo ${opt2} |
 164                                     sed -e's/^WITHOUT_/-DWITH_/' -e's/^WITH_/-DWITHOUT_/'
 165                                 ) |sort >_config2
 166                                 comm -13 _config _config2 >_deps2
 167                                 if [ -s _deps2 ]; then
 168                                         cat <<EOF
 169 (can be overridden with
 170 .Va $(cat _deps2) )
 171 EOF
 172                                 fi
 173                         done
 174                                 cat <<EOF
 175 .El
 176 EOF
 177                 fi
 178         done
 179         cat <<EOF
 180 .El
 181 .Sh FILES
 182 .Bl -tag -compact
 183 .It Pa /etc/src.conf
 184 .It Pa /usr/share/mk/bsd.own.mk
 185 .El
 186 .Sh SEE ALSO
 187 .Xr make 1 ,
 188 .Xr make.conf 5 ,
 189 .Xr build 7 ,
 190 .Xr ports 7
 191 .Sh HISTORY
 192 The
 193 .Nm
 194 file appeared in
 195 .Fx 7.0 .
 196 .Sh AUTHORS
 197 This manual page was autogenerated.
 198 EOF
 199 }
 200
 201 main