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" -MD -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 aix)
 163   # The C for AIX Compiler uses -M and outputs the dependencies
 164   # in a .u file.
 165   tmpdepfile=`echo "$object" | sed 's/\(.*\)\..*$/\1.u/'`
 166   if test "$libtool" = yes; then
 167     "$@" -Wc,-M
 168   else
 169     "$@" -M
 170   fi
 171   if test $? -eq 0 && test -f "$tmpdepfile"; then
 172     mv "$tmpdepfile" "$depfile"
 173   fi
 174   ;;
 175
 176 #nosideeffect)
 177   # This comment above is used by automake to tell side-effect
 178   # dependency tracking mechanisms from slower ones.
 179
 180 dashmstdout)
 181   # Important note: in order to support this mode, a compiler *must*
 182   # always write the proprocessed file to stdout, regardless of -o,
 183   # because we must use -o when running libtool.
 184   test -z "$dashmflag" && dashmflag=-M
 185   ( IFS=" "
 186     case " $* " in
 187     *" --mode=compile "*) # this is libtool, let us make it quiet
 188       for arg
 189       do # cycle over the arguments
 190         case "$arg" in
 191         "--mode=compile")
 192           # insert --quiet before "--mode=compile"
 193           set fnord "$@" --quiet
 194           shift # fnord
 195           ;;
 196         esac
 197         set fnord "$@" "$arg"
 198         shift # fnord
 199         shift # "$arg"
 200       done
 201       ;;
 202     esac
 203     "$@" $dashmflag | sed 's:^[^:]*\:[  ]*:'"$object"'\: :' > "$tmpdepfile"
 204   ) &
 205   proc=$!
 206   "$@"
 207   stat=$?
 208   wait "$proc"
 209   if test "$stat" != 0; then exit $stat; fi
 210   rm -f "$depfile"
 211   cat < "$tmpdepfile" > "$depfile"
 212   tr ' ' '
 213 ' < "$tmpdepfile" | \
 214 ## Some versions of the HPUX 10.20 sed can't process this invocation
 215 ## correctly.  Breaking it into two sed invocations is a workaround.
 216     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 217   rm -f "$tmpdepfile"
 218   ;;
 219
 220 dashXmstdout)
 221   # This case only exists to satisfy depend.m4.  It is never actually
 222   # run, as this mode is specially recognized in the preamble.
 223   exit 1
 224   ;;
 225
 226 makedepend)
 227   # X makedepend
 228   (
 229     shift
 230     cleared=no
 231     for arg in "$@"; do
 232       case $cleared in no)
 233         set ""; shift
 234         cleared=yes
 235       esac
 236       case "$arg" in
 237         -D*|-I*)
 238           set fnord "$@" "$arg"; shift;;
 239         -*)
 240           ;;
 241         *)
 242           set fnord "$@" "$arg"; shift;;
 243       esac
 244     done
 245     obj_suffix="`echo $object | sed 's/^.*\././'`"
 246     touch "$tmpdepfile"
 247     ${MAKEDEPEND-makedepend} 2>/dev/null -o"$obj_suffix" -f"$tmpdepfile" "$@"
 248   ) &
 249   proc=$!
 250   "$@"
 251   stat=$?
 252   wait "$proc"
 253   if test "$stat" != 0; then exit $stat; fi
 254   rm -f "$depfile"
 255   cat < "$tmpdepfile" > "$depfile"
 256   tail +3 "$tmpdepfile" | tr ' ' '
 257 ' | \
 258 ## Some versions of the HPUX 10.20 sed can't process this invocation
 259 ## correctly.  Breaking it into two sed invocations is a workaround.
 260     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
 261   rm -f "$tmpdepfile" "$tmpdepfile".bak
 262   ;;
 263
 264 cpp)
 265   # Important note: in order to support this mode, a compiler *must*
 266   # always write the proprocessed file to stdout, regardless of -o,
 267   # because we must use -o when running libtool.
 268   ( IFS=" "
 269     case " $* " in
 270     *" --mode=compile "*)
 271       for arg
 272       do # cycle over the arguments
 273         case $arg in
 274         "--mode=compile")
 275           # insert --quiet before "--mode=compile"
 276           set fnord "$@" --quiet
 277           shift # fnord
 278           ;;
 279         esac
 280         set fnord "$@" "$arg"
 281         shift # fnord
 282         shift # "$arg"
 283       done
 284       ;;
 285     esac
 286     "$@" -E |
 287     sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
 288     sed '$ s: \\$::' > "$tmpdepfile"
 289   ) &
 290   proc=$!
 291   "$@"
 292   stat=$?
 293   wait "$proc"
 294   if test "$stat" != 0; then exit $stat; fi
 295   rm -f "$depfile"
 296   echo "$object : \\" > "$depfile"
 297   cat < "$tmpdepfile" >> "$depfile"
 298   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
 299   rm -f "$tmpdepfile"
 300   ;;
 301
 302 msvisualcpp)
 303   # Important note: in order to support this mode, a compiler *must*
 304   # always write the proprocessed file to stdout, regardless of -o,
 305   # because we must use -o when running libtool.
 306   ( IFS=" "
 307     case " $* " in
 308     *" --mode=compile "*)
 309       for arg
 310       do # cycle over the arguments
 311         case $arg in
 312         "--mode=compile")
 313           # insert --quiet before "--mode=compile"
 314           set fnord "$@" --quiet
 315           shift # fnord
 316           ;;
 317         esac
 318         set fnord "$@" "$arg"
 319         shift # fnord
 320         shift # "$arg"
 321       done
 322       ;;
 323     esac
 324     "$@" -E |
 325     sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
 326   ) &
 327   proc=$!
 328   "$@"
 329   stat=$?
 330   wait "$proc"
 331   if test "$stat" != 0; then exit $stat; fi
 332   rm -f "$depfile"
 333   echo "$object : \\" > "$depfile"
 334   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::    \1 \\:p' >> "$depfile"
 335   echo "        " >> "$depfile"
 336   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
 337   rm -f "$tmpdepfile"
 338   ;;
 339
 340 none)
 341   exec "$@"
 342   ;;
 343
 344 *)
 345   echo "Unknown depmode $depmode" 1>&2
 346   exit 1
 347   ;;
 348 esac
 349
 350 exit 0