depcomp

   1 #! /bin/sh
   2
   3 # depcomp - compile a program generating dependencies as side-effects
   4 # Copyright (C) 1999, 2000 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   alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
  73 ## The second -e expression handles DOS-style file names with drive letters.
  74   sed -e 's/^[^:]*: / /' \
  75       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
  76 ## This next piece of magic avoids the `deleted header file' problem.
  77 ## The problem is that when a header file which appears in a .P file
  78 ## is deleted, the dependency causes make to die (because there is
  79 ## typically no way to rebuild the header).  We avoid this by adding
  80 ## dummy dependencies for each header file.  Too bad gcc doesn't do
  81 ## this for us directly.
  82   tr ' ' '
  83 ' < "$tmpdepfile" |
  84 ## Some versions of gcc put a space before the `:'.  On the theory
  85 ## that the space means something, we add a space to the output as
  86 ## well.
  87 ## Some versions of the HPUX 10.20 sed can't process this invocation
  88 ## correctly.  Breaking it into two sed invocations is a workaround.
  89     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
  90   rm -f "$tmpdepfile"
  91   ;;
  92
  93 hp)
  94   # This case exists only to let depend.m4 do its work.  It works by
  95   # looking at the text of this script.  This case will never be run,
  96   # since it is checked for above.
  97   exit 1
  98   ;;
  99
 100 dashmd)
 101   # The Java front end to gcc doesn't run cpp, so we can't use the -Wp
 102   # trick.  Instead we must use -M and then rename the resulting .d
 103   # file.  This is also the case for older versions of gcc, which
 104   # don't implement -Wp.
 105   if "$@" -MD; then :
 106   else
 107     stat=$?
 108     rm -f FIXME
 109     exit $stat
 110   fi
 111   FIXME: rewrite the file
 112   ;;
 113
 114 sgi)
 115   if test "$libtool" = yes; then
 116     "$@" "-Wp,-MDupdate,$tmpdepfile"
 117   else
 118     "$@" -MDupdate "$tmpdepfile"
 119   fi
 120   stat=$?
 121   if test $stat -eq 0; then :
 122   else
 123     stat=$?
 124     rm -f "$tmpdepfile"
 125     exit $stat
 126   fi
 127   rm -f "$depfile"
 128   echo "$object : \\" > "$depfile"
 129
 130   # Clip off the initial element (the dependent). Don't try to be
 131   # clever and remove the tr invocations, as IRIX sed won't handle
 132   # lines with more than 8192 characters.
 133   tr ' ' '
 134 ' < "$tmpdepfile" | sed 's/^[^\.]*\.o://' | tr '
 135 ' ' ' >> $depfile
 136
 137   tr ' ' '
 138 ' < "$tmpdepfile" | \
 139 ## Some versions of the HPUX 10.20 sed can't process this invocation
 140 ## correctly.  Breaking it into two sed invocations is a workaround.
 141     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 142   rm -f "$tmpdepfile"
 143   ;;
 144
 145 #nosideeffect)
 146   # This comment above is used by automake to tell side-effect
 147   # dependency tracking mechanisms from slower ones.
 148
 149 dashmstdout)
 150   # Important note: in order to support this mode, a compiler *must*
 151   # always write the proprocessed file to stdout, regardless of -o,
 152   # because we must use -o when running libtool.
 153   test -z "$dashmflag" && dashmflag=-M
 154   ( IFS=" "
 155     case " $* " in
 156     *" --mode=compile "*) # this is libtool, let us make it quiet
 157       for arg
 158       do # cycle over the arguments
 159         case "$arg" in
 160         "--mode=compile")
 161           # insert --quiet before "--mode=compile"
 162           set fnord "$@" --quiet
 163           shift # fnord
 164           ;;
 165         esac
 166         set fnord "$@" "$arg"
 167         shift # fnord
 168         shift # "$arg"
 169       done
 170       ;;
 171     esac
 172     "$@" $dashmflag | sed 's:^[^:]*\:[  ]*:'"$object"'\: :' > "$tmpdepfile"
 173   ) &
 174   proc=$!
 175   "$@"
 176   stat=$?
 177   wait "$proc"
 178   if test "$stat" != 0; then exit $stat; fi
 179   rm -f "$depfile"
 180   cat < "$tmpdepfile" > "$depfile"
 181   tr ' ' '
 182 ' < "$tmpdepfile" | \
 183 ## Some versions of the HPUX 10.20 sed can't process this invocation
 184 ## correctly.  Breaking it into two sed invocations is a workaround.
 185     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 186   rm -f "$tmpdepfile"
 187   ;;
 188
 189 dashXmstdout)
 190   # This case only exists to satisfy depend.m4.  It is never actually
 191   # run, as this mode is specially recognized in the preamble.
 192   exit 1
 193   ;;
 194
 195 makedepend)
 196   # X makedepend
 197   (
 198     shift
 199     cleared=no
 200     for arg in "$@"; do
 201       case $cleared in no)
 202         set ""; shift
 203         cleared=yes
 204       esac
 205       case "$arg" in
 206         -D*|-I*)
 207           set fnord "$@" "$arg"; shift;;
 208         -*)
 209           ;;
 210         *)
 211           set fnord "$@" "$arg"; shift;;
 212       esac
 213     done
 214     obj_suffix="`echo $object | sed 's/^.*\././'`"
 215     touch "$tmpdepfile"
 216     ${MAKEDEPEND-makedepend} 2>/dev/null -o"$obj_suffix" -f"$tmpdepfile" "$@"
 217   ) &
 218   proc=$!
 219   "$@"
 220   stat=$?
 221   wait "$proc"
 222   if test "$stat" != 0; then exit $stat; fi
 223   rm -f "$depfile"
 224   cat < "$tmpdepfile" > "$depfile"
 225   tail +3 "$tmpdepfile" | tr ' ' '
 226 ' | \
 227 ## Some versions of the HPUX 10.20 sed can't process this invocation
 228 ## correctly.  Breaking it into two sed invocations is a workaround.
 229     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 230   rm -f "$tmpdepfile" "$tmpdepfile".bak
 231   ;;
 232
 233 cpp)
 234   # Important note: in order to support this mode, a compiler *must*
 235   # always write the proprocessed file to stdout, regardless of -o,
 236   # because we must use -o when running libtool.
 237   ( IFS=" "
 238     case " $* " in
 239     *" --mode=compile "*)
 240       for arg
 241       do # cycle over the arguments
 242         case "$arg" in
 243         "--mode=compile")
 244           # insert --quiet before "--mode=compile"
 245           set fnord "$@" --quiet
 246           shift # fnord
 247           ;;
 248         esac
 249         set fnord "$@" "$arg"
 250         shift # fnord
 251         shift # "$arg"
 252       done
 253       ;;
 254     esac
 255     "$@" -E |
 256     sed -n '/^# [0-9][0-9]* "\([^"]*\)"/ s::'"$object"'\: \1:p' > "$tmpdepfile"
 257   ) &
 258   proc=$!
 259   "$@"
 260   stat=$?
 261   wait "$proc"
 262   if test "$stat" != 0; then exit $stat; fi
 263   rm -f "$depfile"
 264   cat < "$tmpdepfile" > "$depfile"
 265   sed < "$tmpdepfile" -e 's/^[^:]*: //' -e 's/$/ :/' >> "$depfile"
 266   rm -f "$tmpdepfile"
 267   ;;
 268
 269 none)
 270   exec "$@"
 271   ;;
 272
 273 *)
 274   echo "Unknown depmode $depmode" 1>&2
 275   exit 1
 276   ;;
 277 esac
 278
 279 exit 0