depcomp

   1 #! /bin/sh
   2
   3 # depcomp - compile a program generating dependencies as side-effects
   4 # Copyright 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
 129   if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
 130     echo "$object : \\" > "$depfile"
 131
 132     # Clip off the initial element (the dependent). Don't try to be
 133     # clever and replace this with sed code, as IRIX sed won't handle
 134     # lines with more than a fixed number of characters (4096 in
 135     # IRIX 6.2 sed, 8192 in IRIX 6.5).
 136     tr ' ' '
 137 ' < "$tmpdepfile" | sed 's/^[^\.]*\.o://' | tr '
 138 ' ' ' >> $depfile
 139
 140     tr ' ' '
 141 ' < "$tmpdepfile" | \
 142 ## Some versions of the HPUX 10.20 sed can't process this invocation
 143 ## correctly.  Breaking it into two sed invocations is a workaround.
 144       sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 145   else
 146     # The sourcefile does not contain any dependencies, so just
 147     # store a dummy comment line, to avoid errors with the Makefile
 148     # "include basename.Plo" scheme.
 149     echo "#dummy" > "$depfile"
 150   fi
 151   rm -f "$tmpdepfile"
 152   ;;
 153
 154 #nosideeffect)
 155   # This comment above is used by automake to tell side-effect
 156   # dependency tracking mechanisms from slower ones.
 157
 158 dashmstdout)
 159   # Important note: in order to support this mode, a compiler *must*
 160   # always write the proprocessed file to stdout, regardless of -o,
 161   # because we must use -o when running libtool.
 162   test -z "$dashmflag" && dashmflag=-M
 163   ( IFS=" "
 164     case " $* " in
 165     *" --mode=compile "*) # this is libtool, let us make it quiet
 166       for arg
 167       do # cycle over the arguments
 168         case "$arg" in
 169         "--mode=compile")
 170           # insert --quiet before "--mode=compile"
 171           set fnord "$@" --quiet
 172           shift # fnord
 173           ;;
 174         esac
 175         set fnord "$@" "$arg"
 176         shift # fnord
 177         shift # "$arg"
 178       done
 179       ;;
 180     esac
 181     "$@" $dashmflag | sed 's:^[^:]*\:[  ]*:'"$object"'\: :' > "$tmpdepfile"
 182   ) &
 183   proc=$!
 184   "$@"
 185   stat=$?
 186   wait "$proc"
 187   if test "$stat" != 0; then exit $stat; fi
 188   rm -f "$depfile"
 189   cat < "$tmpdepfile" > "$depfile"
 190   tr ' ' '
 191 ' < "$tmpdepfile" | \
 192 ## Some versions of the HPUX 10.20 sed can't process this invocation
 193 ## correctly.  Breaking it into two sed invocations is a workaround.
 194     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 195   rm -f "$tmpdepfile"
 196   ;;
 197
 198 dashXmstdout)
 199   # This case only exists to satisfy depend.m4.  It is never actually
 200   # run, as this mode is specially recognized in the preamble.
 201   exit 1
 202   ;;
 203
 204 makedepend)
 205   # X makedepend
 206   (
 207     shift
 208     cleared=no
 209     for arg in "$@"; do
 210       case $cleared in no)
 211         set ""; shift
 212         cleared=yes
 213       esac
 214       case "$arg" in
 215         -D*|-I*)
 216           set fnord "$@" "$arg"; shift;;
 217         -*)
 218           ;;
 219         *)
 220           set fnord "$@" "$arg"; shift;;
 221       esac
 222     done
 223     obj_suffix="`echo $object | sed 's/^.*\././'`"
 224     touch "$tmpdepfile"
 225     ${MAKEDEPEND-makedepend} 2>/dev/null -o"$obj_suffix" -f"$tmpdepfile" "$@"
 226   ) &
 227   proc=$!
 228   "$@"
 229   stat=$?
 230   wait "$proc"
 231   if test "$stat" != 0; then exit $stat; fi
 232   rm -f "$depfile"
 233   cat < "$tmpdepfile" > "$depfile"
 234   tail +3 "$tmpdepfile" | tr ' ' '
 235 ' | \
 236 ## Some versions of the HPUX 10.20 sed can't process this invocation
 237 ## correctly.  Breaking it into two sed invocations is a workaround.
 238     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 239   rm -f "$tmpdepfile" "$tmpdepfile".bak
 240   ;;
 241
 242 cpp)
 243   # Important note: in order to support this mode, a compiler *must*
 244   # always write the proprocessed file to stdout, regardless of -o,
 245   # because we must use -o when running libtool.
 246   ( IFS=" "
 247     case " $* " in
 248     *" --mode=compile "*)
 249       for arg
 250       do # cycle over the arguments
 251         case $arg in
 252         "--mode=compile")
 253           # insert --quiet before "--mode=compile"
 254           set fnord "$@" --quiet
 255           shift # fnord
 256           ;;
 257         esac
 258         set fnord "$@" "$arg"
 259         shift # fnord
 260         shift # "$arg"
 261       done
 262       ;;
 263     esac
 264     "$@" -E |
 265     sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
 266     sed '$ s: \\$::' > "$tmpdepfile"
 267   ) &
 268   proc=$!
 269   "$@"
 270   stat=$?
 271   wait "$proc"
 272   if test "$stat" != 0; then exit $stat; fi
 273   rm -f "$depfile"
 274   echo "$object : \\" > "$depfile"
 275   cat < "$tmpdepfile" >> "$depfile"
 276   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
 277   rm -f "$tmpdepfile"
 278   ;;
 279
 280 msvisualcpp)
 281   # Important note: in order to support this mode, a compiler *must*
 282   # always write the proprocessed file to stdout, regardless of -o,
 283   # because we must use -o when running libtool.
 284   ( IFS=" "
 285     case " $* " in
 286     *" --mode=compile "*)
 287       for arg
 288       do # cycle over the arguments
 289         case $arg in
 290         "--mode=compile")
 291           # insert --quiet before "--mode=compile"
 292           set fnord "$@" --quiet
 293           shift # fnord
 294           ;;
 295         esac
 296         set fnord "$@" "$arg"
 297         shift # fnord
 298         shift # "$arg"
 299       done
 300       ;;
 301     esac
 302     "$@" -E |
 303     sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
 304   ) &
 305   proc=$!
 306   "$@"
 307   stat=$?
 308   wait "$proc"
 309   if test "$stat" != 0; then exit $stat; fi
 310   rm -f "$depfile"
 311   echo "$object : \\" > "$depfile"
 312   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::    \1 \\:p' >> "$depfile"
 313   echo "        " >> "$depfile"
 314   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
 315   rm -f "$tmpdepfile"
 316   ;;
 317
 318 none)
 319   exec "$@"
 320   ;;
 321
 322 *)
 323   echo "Unknown depmode $depmode" 1>&2
 324   exit 1
 325   ;;
 326 esac
 327
 328 exit 0