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 "$depmode" in
  51 gcc3)
  52 ## gcc 3 implements dependency tracking that does exactly what
  53 ## we want.  Yay!
  54    if "$@" -MT "$object" -MF "$depfile" -M -MP; then
  55       exit $?
  56    fi
  57    ;;
  58
  59 gcc)
  60 ## There are various ways to get dependency output from gcc.  Here's
  61 ## why we pick this rather obscure method:
  62 ## - Don't want to use -MD because we'd like the dependencies to end
  63 ##   up in a subdir.  Having to rename by hand is ugly.
  64 ##   (We might end up doing this anyway to support other compilers.)
  65 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
  66 ##   -MM, not -M (despite what the docs say).
  67 ## - Using -M directly means running the compiler twice (even worse
  68 ##   than renaming).
  69   if test -z "$gccflag"; then
  70     gccflag=-MD,
  71   fi
  72   if "$@" -Wp,"$gccflag$tmpdepfile"; then :
  73   else
  74     stat=$?
  75     rm -f "$tmpdepfile"
  76     exit $stat
  77   fi
  78   rm -f "$depfile"
  79   echo "$object : \\" > "$depfile"
  80   alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
  81 ## The second -e expression handles DOS-style file names with drive letters.
  82   sed -e 's/^[^:]*: / /' \
  83       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
  84 ## This next piece of magic avoids the `deleted header file' problem.
  85 ## The problem is that when a header file which appears in a .P file
  86 ## is deleted, the dependency causes make to die (because there is
  87 ## typically no way to rebuild the header).  We avoid this by adding
  88 ## dummy dependencies for each header file.  Too bad gcc doesn't do
  89 ## this for us directly.
  90   tr ' ' '
  91 ' < "$tmpdepfile" |
  92 ## Some versions of gcc put a space before the `:'.  On the theory
  93 ## that the space means something, we add a space to the output as
  94 ## well.
  95 ## Some versions of the HPUX 10.20 sed can't process this invocation
  96 ## correctly.  Breaking it into two sed invocations is a workaround.
  97     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
  98   rm -f "$tmpdepfile"
  99   ;;
 100
 101 hp)
 102   # This case exists only to let depend.m4 do its work.  It works by
 103   # looking at the text of this script.  This case will never be run,
 104   # since it is checked for above.
 105   exit 1
 106   ;;
 107
 108 dashmd)
 109   # The Java front end to gcc doesn't run cpp, so we can't use the -Wp
 110   # trick.  Instead we must use -M and then rename the resulting .d
 111   # file.  This is also the case for older versions of gcc, which
 112   # don't implement -Wp.
 113   if "$@" -MD; then :
 114   else
 115     stat=$?
 116     rm -f FIXME
 117     exit $stat
 118   fi
 119   FIXME: rewrite the file
 120   ;;
 121
 122 sgi)
 123   if test "$libtool" = yes; then
 124     "$@" "-Wp,-MDupdate,$tmpdepfile"
 125   else
 126     "$@" -MDupdate "$tmpdepfile"
 127   fi
 128   stat=$?
 129   if test $stat -eq 0; then :
 130   else
 131     stat=$?
 132     rm -f "$tmpdepfile"
 133     exit $stat
 134   fi
 135   rm -f "$depfile"
 136
 137   if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
 138     echo "$object : \\" > "$depfile"
 139
 140     # Clip off the initial element (the dependent). Don't try to be
 141     # clever and replace this with sed code, as IRIX sed won't handle
 142     # lines with more than a fixed number of characters (4096 in
 143     # IRIX 6.2 sed, 8192 in IRIX 6.5).
 144     tr ' ' '
 145 ' < "$tmpdepfile" | sed 's/^[^\.]*\.o://' | tr '
 146 ' ' ' >> $depfile
 147
 148     tr ' ' '
 149 ' < "$tmpdepfile" | \
 150 ## Some versions of the HPUX 10.20 sed can't process this invocation
 151 ## correctly.  Breaking it into two sed invocations is a workaround.
 152       sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 153   else
 154     # The sourcefile does not contain any dependencies, so just
 155     # store a dummy comment line, to avoid errors with the Makefile
 156     # "include basename.Plo" scheme.
 157     echo "#dummy" > "$depfile"
 158   fi
 159   rm -f "$tmpdepfile"
 160   ;;
 161
 162 #nosideeffect)
 163   # This comment above is used by automake to tell side-effect
 164   # dependency tracking mechanisms from slower ones.
 165
 166 dashmstdout)
 167   # Important note: in order to support this mode, a compiler *must*
 168   # always write the proprocessed file to stdout, regardless of -o,
 169   # because we must use -o when running libtool.
 170   test -z "$dashmflag" && dashmflag=-M
 171   ( IFS=" "
 172     case " $* " in
 173     *" --mode=compile "*) # this is libtool, let us make it quiet
 174       for arg
 175       do # cycle over the arguments
 176         case "$arg" in
 177         "--mode=compile")
 178           # insert --quiet before "--mode=compile"
 179           set fnord "$@" --quiet
 180           shift # fnord
 181           ;;
 182         esac
 183         set fnord "$@" "$arg"
 184         shift # fnord
 185         shift # "$arg"
 186       done
 187       ;;
 188     esac
 189     "$@" $dashmflag | sed 's:^[^:]*\:[  ]*:'"$object"'\: :' > "$tmpdepfile"
 190   ) &
 191   proc=$!
 192   "$@"
 193   stat=$?
 194   wait "$proc"
 195   if test "$stat" != 0; then exit $stat; fi
 196   rm -f "$depfile"
 197   cat < "$tmpdepfile" > "$depfile"
 198   tr ' ' '
 199 ' < "$tmpdepfile" | \
 200 ## Some versions of the HPUX 10.20 sed can't process this invocation
 201 ## correctly.  Breaking it into two sed invocations is a workaround.
 202     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 203   rm -f "$tmpdepfile"
 204   ;;
 205
 206 dashXmstdout)
 207   # This case only exists to satisfy depend.m4.  It is never actually
 208   # run, as this mode is specially recognized in the preamble.
 209   exit 1
 210   ;;
 211
 212 makedepend)
 213   # X makedepend
 214   (
 215     shift
 216     cleared=no
 217     for arg in "$@"; do
 218       case $cleared in no)
 219         set ""; shift
 220         cleared=yes
 221       esac
 222       case "$arg" in
 223         -D*|-I*)
 224           set fnord "$@" "$arg"; shift;;
 225         -*)
 226           ;;
 227         *)
 228           set fnord "$@" "$arg"; shift;;
 229       esac
 230     done
 231     obj_suffix="`echo $object | sed 's/^.*\././'`"
 232     touch "$tmpdepfile"
 233     ${MAKEDEPEND-makedepend} 2>/dev/null -o"$obj_suffix" -f"$tmpdepfile" "$@"
 234   ) &
 235   proc=$!
 236   "$@"
 237   stat=$?
 238   wait "$proc"
 239   if test "$stat" != 0; then exit $stat; fi
 240   rm -f "$depfile"
 241   cat < "$tmpdepfile" > "$depfile"
 242   tail +3 "$tmpdepfile" | tr ' ' '
 243 ' | \
 244 ## Some versions of the HPUX 10.20 sed can't process this invocation
 245 ## correctly.  Breaking it into two sed invocations is a workaround.
 246     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 247   rm -f "$tmpdepfile" "$tmpdepfile".bak
 248   ;;
 249
 250 cpp)
 251   # Important note: in order to support this mode, a compiler *must*
 252   # always write the proprocessed file to stdout, regardless of -o,
 253   # because we must use -o when running libtool.
 254   ( IFS=" "
 255     case " $* " in
 256     *" --mode=compile "*)
 257       for arg
 258       do # cycle over the arguments
 259         case $arg in
 260         "--mode=compile")
 261           # insert --quiet before "--mode=compile"
 262           set fnord "$@" --quiet
 263           shift # fnord
 264           ;;
 265         esac
 266         set fnord "$@" "$arg"
 267         shift # fnord
 268         shift # "$arg"
 269       done
 270       ;;
 271     esac
 272     "$@" -E |
 273     sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
 274     sed '$ s: \\$::' > "$tmpdepfile"
 275   ) &
 276   proc=$!
 277   "$@"
 278   stat=$?
 279   wait "$proc"
 280   if test "$stat" != 0; then exit $stat; fi
 281   rm -f "$depfile"
 282   echo "$object : \\" > "$depfile"
 283   cat < "$tmpdepfile" >> "$depfile"
 284   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
 285   rm -f "$tmpdepfile"
 286   ;;
 287
 288 msvisualcpp)
 289   # Important note: in order to support this mode, a compiler *must*
 290   # always write the proprocessed file to stdout, regardless of -o,
 291   # because we must use -o when running libtool.
 292   ( IFS=" "
 293     case " $* " in
 294     *" --mode=compile "*)
 295       for arg
 296       do # cycle over the arguments
 297         case $arg in
 298         "--mode=compile")
 299           # insert --quiet before "--mode=compile"
 300           set fnord "$@" --quiet
 301           shift # fnord
 302           ;;
 303         esac
 304         set fnord "$@" "$arg"
 305         shift # fnord
 306         shift # "$arg"
 307       done
 308       ;;
 309     esac
 310     "$@" -E |
 311     sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
 312   ) &
 313   proc=$!
 314   "$@"
 315   stat=$?
 316   wait "$proc"
 317   if test "$stat" != 0; then exit $stat; fi
 318   rm -f "$depfile"
 319   echo "$object : \\" > "$depfile"
 320   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::    \1 \\:p' >> "$depfile"
 321   echo "        " >> "$depfile"
 322   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
 323   rm -f "$tmpdepfile"
 324   ;;
 325
 326 none)
 327   exec "$@"
 328   ;;
 329
 330 *)
 331   echo "Unknown depmode $depmode" 1>&2
 332   exit 1
 333   ;;
 334 esac
 335
 336 exit 0