depcomp

   1 #! /bin/sh
   2
   3 # depcomp - compile a program generating dependencies as side-effects
   4 # Copyright (C) 1999 Free Software Foundation, Inc.
   5
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2, or (at your option)
   9 # any later version.
  10
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  19 # 02111-1307, USA.
  20
  21 # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
  22
  23 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
  24   echo "depcomp: Variables source, object and depmode must be set" 1>&2
  25   exit 1
  26 fi
  27 # `libtool' can also be set to `yes' or `no'.
  28
  29 depfile=${depfile-`echo "$object" | sed 's,\([^/]*\)$,.deps/\1,;s/\.\([^.]*\)$/.P\1/'`}
  30 tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
  31
  32 rm -f "$tmpdepfile"
  33
  34 # Some modes work just like other modes, but use different flags.  We
  35 # parameterize here, but still list the modes in the big case below,
  36 # to make depend.m4 easier to write.  Note that we *cannot* use a case
  37 # here, because this file can only contain one case statement.
  38 if test "$depmode" = hp; then
  39   # HP compiler uses -M and no extra arg.
  40   gccflag=-M
  41   depmode=gcc
  42 fi
  43
  44 if test "$depmode" = dashXmstdout; then
  45    # This is just like dashmstdout with a different argument.
  46    dashmflag=-xM
  47    depmode=dashmstdout
  48 fi
  49
  50 case "$depmode" in
  51 gcc)
  52 ## There are various ways to get dependency output from gcc.  Here's
  53 ## why we pick this rather obscure method:
  54 ## - Don't want to use -MD because we'd like the dependencies to end
  55 ##   up in a subdir.  Having to rename by hand is ugly.
  56 ##   (We might end up doing this anyway to support other compilers.)
  57 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
  58 ##   -MM, not -M (despite what the docs say).
  59 ## - Using -M directly means running the compiler twice (even worse
  60 ##   than renaming).
  61   if test -z "$gccflag"; then
  62     gccflag=-MD,
  63   fi
  64   if "$@" -Wp,"$gccflag$tmpdepfile"; then :
  65   else
  66     stat=$?
  67     rm -f "$tmpdepfile"
  68     exit $stat
  69   fi
  70   rm -f "$depfile"
  71   echo "$object : \\" > "$depfile"
  72   sed 's/^[^:]*: / /' < "$tmpdepfile" >> "$depfile"
  73 ## This next piece of magic avoids the `deleted header file' problem.
  74 ## The problem is that when a header file which appears in a .P file
  75 ## is deleted, the dependency causes make to die (because there is
  76 ## typically no way to rebuild the header).  We avoid this by adding
  77 ## dummy dependencies for each header file.  Too bad gcc doesn't do
  78 ## this for us directly.
  79   tr ' ' '
  80 ' < "$tmpdepfile" |
  81 ## Some versions of gcc put a space before the `:'.  On the theory
  82 ## that the space means something, we add a space to the output as
  83 ## well.
  84 ## Some versions of the HPUX 10.20 sed can't process this invocation
  85 ## correctly.  Breaking it into two sed invocations is a workaround.
  86     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
  87   rm -f "$tmpdepfile"
  88   ;;
  89
  90 hp)
  91   # This case exists only to let depend.m4 do its work.  It works by
  92   # looking at the text of this script.  This case will never be run,
  93   # since it is checked for above.
  94   exit 1
  95   ;;
  96
  97 dashmd)
  98   # The Java front end to gcc doesn't run cpp, so we can't use the -Wp
  99   # trick.  Instead we must use -M and then rename the resulting .d
 100   # file.  This is also the case for older versions of gcc, which
 101   # don't implement -Wp.
 102   if "$@" -MD; then :
 103   else
 104     stat=$?
 105     rm -f FIXME
 106     exit $stat
 107   fi
 108   FIXME: rewrite the file
 109   ;;
 110
 111 sgi)
 112   if test "$libtool" = yes; then
 113     "$@" "-Wc,-MDupdate,$tmpdepfile"
 114   else
 115     "$@" -MDupdate "$tmpdepfile"
 116   fi
 117   stat=$?
 118   if test $stat -eq 0; then :
 119   else
 120     stat=$?
 121     rm -f "$tmpdepfile"
 122     exit $stat
 123   fi
 124   rm -f "$depfile"
 125   echo "$object : \\" > "$depfile"
 126   sed 's/^[^:]*: / /' < "$tmpdepfile" >> "$depfile"
 127   tr ' ' '
 128 ' < "$tmpdepfile" | \
 129 ## Some versions of the HPUX 10.20 sed can't process this invocation
 130 ## correctly.  Breaking it into two sed invocations is a workaround.
 131     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 132   rm -f "$tmpdepfile"
 133   ;;
 134
 135 #nosideeffect)
 136   # This comment above is used by automake to tell side-effect
 137   # dependency tracking mechanisms from slower ones.
 138
 139 dashmstdout)
 140   # Important note: in order to support this mode, a compiler *must*
 141   # always write the proprocessed file to stdout, regardless of -o,
 142   # because we must use -o when running libtool.
 143   test -z "$dashmflag" && dashmflag=-M
 144   ( IFS=" "
 145     case " $* " in
 146     *" --mode=compile "*) # this is libtool, let us make it quiet
 147       for arg
 148       do # cycle over the arguments
 149         case "$arg" in
 150         "--mode=compile")
 151           # insert --quiet before "--mode=compile"
 152           set fnord "$@" --quiet
 153           shift # fnord
 154           ;;
 155         esac
 156         set fnord "$@" "$arg"
 157         shift # fnord
 158         shift # "$arg"
 159       done
 160       ;;
 161     esac
 162     "$@" $dashmflag | sed 's:^[^:]*\:[  ]*:'"$object"'\: :' > "$tmpdepfile"
 163   ) &
 164   proc=$!
 165   "$@"
 166   stat=$?
 167   wait "$proc"
 168   if test "$stat" != 0; then exit $stat; fi
 169   rm -f "$depfile"
 170   cat < "$tmpdepfile" > "$depfile"
 171   tr ' ' '
 172 ' < "$tmpdepfile" | \
 173 ## Some versions of the HPUX 10.20 sed can't process this invocation
 174 ## correctly.  Breaking it into two sed invocations is a workaround.
 175     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 176   rm -f "$tmpdepfile"
 177   ;;
 178
 179 dashXmstdout)
 180   # This case only exists to satisfy depend.m4.  It is never actually
 181   # run, as this mode is specially recognized in the preamble.
 182   exit 1
 183   ;;
 184
 185 makedepend)
 186   # X makedepend
 187   (
 188     shift
 189     cleared=no
 190     for arg in "$@"; do
 191       case $cleared in no)
 192         set ""; shift
 193         cleared=yes
 194       esac
 195       case "$arg" in
 196         -D*|-I*)
 197           set fnord "$@" "$arg"; shift;;
 198         -*)
 199           ;;
 200         *)
 201           set fnord "$@" "$arg"; shift;;
 202       esac
 203     done
 204     obj_suffix="`echo $object | sed 's/^.*\././'`"
 205     touch "$tmpdepfile"
 206     ${MAKEDEPEND-makedepend} 2>/dev/null -o"$obj_suffix" -f"$tmpdepfile" "$@"
 207   ) &
 208   proc=$!
 209   "$@"
 210   stat=$?
 211   wait "$proc"
 212   if test "$stat" != 0; then exit $stat; fi
 213   rm -f "$depfile"
 214   cat < "$tmpdepfile" > "$depfile"
 215   tail +3 "$tmpdepfile" | tr ' ' '
 216 ' | \
 217 ## Some versions of the HPUX 10.20 sed can't process this invocation
 218 ## correctly.  Breaking it into two sed invocations is a workaround.
 219     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 220   rm -f "$tmpdepfile" "$tmpdepfile".bak
 221   ;;
 222
 223 cpp)
 224   # Important note: in order to support this mode, a compiler *must*
 225   # always write the proprocessed file to stdout, regardless of -o,
 226   # because we must use -o when running libtool.
 227   ( IFS=" "
 228     case " $* " in
 229     *" --mode=compile "*)
 230       for arg
 231       do # cycle over the arguments
 232         case "$arg" in
 233         "--mode=compile")
 234           # insert --quiet before "--mode=compile"
 235           set fnord "$@" --quiet
 236           shift # fnord
 237           ;;
 238         esac
 239         set fnord "$@" "$arg"
 240         shift # fnord
 241         shift # "$arg"
 242       done
 243       ;;
 244     esac
 245     "$@" -E |
 246     sed -n '/^# [0-9][0-9]* "\([^"]*\)"/ s::'"$object"'\: \1:p' > "$tmpdepfile"
 247   ) &
 248   proc=$!
 249   "$@"
 250   stat=$?
 251   wait "$proc"
 252   if test "$stat" != 0; then exit $stat; fi
 253   rm -f "$depfile"
 254   cat < "$tmpdepfile" > "$depfile"
 255   sed < "$tmpdepfile" -e 's/^[^:]*: //' -e 's/$/ :/' >> "$depfile"
 256   rm -f "$tmpdepfile"
 257   ;;
 258
 259 none)
 260   exec "$@"
 261   ;;
 262
 263 *)
 264   echo "Unknown depmode $depmode" 1>&2
 265   exit 1
 266   ;;
 267 esac
 268
 269 exit 0