#! /bin/sh
 
 # depcomp - compile a program generating dependencies as side-effects
 # Copyright 1999, 2000 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2, or (at your option)
 # any later version.
 
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 # 02111-1307, USA.
 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
 # configuration script generated by Autoconf, you may include it under
 # the same distribution terms that you use for the rest of that program.
 
 # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
 
 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
   echo "depcomp: Variables source, object and depmode must be set" 1>&2
   exit 1
 fi
 # `libtool' can also be set to `yes' or `no'.
 
 if test -z "$depfile"; then
    base=`echo "$object" | sed -e 's,^.*/,,' -e 's,\.\([^.]*\)$,.P\1,'`
    dir=`echo "$object" | sed 's,/.*$,/,'`
    if test "$dir" = "$object"; then
       dir=
    fi
    # FIXME: should be _deps on DOS.
    depfile="$dir.deps/$base"
 fi
 
 tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
 
 rm -f "$tmpdepfile"
 
 # Some modes work just like other modes, but use different flags.  We
 # parameterize here, but still list the modes in the big case below,
 # to make depend.m4 easier to write.  Note that we *cannot* use a case
 # here, because this file can only contain one case statement.
 if test "$depmode" = hp; then
   # HP compiler uses -M and no extra arg.
   gccflag=-M
   depmode=gcc
 fi
 
 if test "$depmode" = dashXmstdout; then
    # This is just like dashmstdout with a different argument.
    dashmflag=-xM
    depmode=dashmstdout
 fi
 
 case "$depmode" in
 gcc3)
 ## gcc 3 implements dependency tracking that does exactly what
 ## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
 ## it if -MD -MP comes after the -MF stuff.  Hmm.
   "$@" -MT "$object" -MD -MP -MF "$tmpdepfile"
   stat=$?
   if test $stat -eq 0; then :
   else
     rm -f "$tmpdepfile"
     exit $stat
   fi
   mv "$tmpdepfile" "$depfile"
   ;;
 
 gcc)
 ## There are various ways to get dependency output from gcc.  Here's
 ## why we pick this rather obscure method:
 ## - Don't want to use -MD because we'd like the dependencies to end
 ##   up in a subdir.  Having to rename by hand is ugly.
 ##   (We might end up doing this anyway to support other compilers.)
 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
 ##   -MM, not -M (despite what the docs say).
 ## - Using -M directly means running the compiler twice (even worse
 ##   than renaming).
   if test -z "$gccflag"; then
     gccflag=-MD,
   fi
   "$@" -Wp,"$gccflag$tmpdepfile"
   stat=$?
   if test $stat -eq 0; then :
   else
     rm -f "$tmpdepfile"
     exit $stat
   fi
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
   alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
 ## The second -e expression handles DOS-style file names with drive letters.
   sed -e 's/^[^:]*: / /' \
       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
 ## This next piece of magic avoids the `deleted header file' problem.
 ## The problem is that when a header file which appears in a .P file
 ## is deleted, the dependency causes make to die (because there is
 ## typically no way to rebuild the header).  We avoid this by adding
 ## dummy dependencies for each header file.  Too bad gcc doesn't do
 ## this for us directly.
   tr ' ' '
 ' < "$tmpdepfile" |
 ## Some versions of gcc put a space before the `:'.  On the theory
 ## that the space means something, we add a space to the output as
 ## well.
 ## Some versions of the HPUX 10.20 sed can't process this invocation
 ## correctly.  Breaking it into two sed invocations is a workaround.
     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
 hp)
   # This case exists only to let depend.m4 do its work.  It works by
   # looking at the text of this script.  This case will never be run,
   # since it is checked for above.
   exit 1
   ;;
 
 sgi)
   if test "$libtool" = yes; then
     "$@" "-Wp,-MDupdate,$tmpdepfile"
   else
     "$@" -MDupdate "$tmpdepfile"
   fi
   stat=$?
   if test $stat -eq 0; then :
   else
     rm -f "$tmpdepfile"
     exit $stat
   fi
   rm -f "$depfile"
 
   if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
     echo "$object : \\" > "$depfile"
 
     # Clip off the initial element (the dependent).  Don't try to be
     # clever and replace this with sed code, as IRIX sed won't handle
     # lines with more than a fixed number of characters (4096 in
     # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
     # the IRIX cc adds comments like `#:fec' to the end of the
     # dependency line.
     tr ' ' '
 ' < "$tmpdepfile" \
     | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
     tr '
 ' ' ' >> $depfile
     echo >> $depfile
 
     # The second pass generates a dummy entry for each header file.
     tr ' ' '
 ' < "$tmpdepfile" \
    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
    >> $depfile
   else
     # The sourcefile does not contain any dependencies, so just
     # store a dummy comment line, to avoid errors with the Makefile
     # "include basename.Plo" scheme.
     echo "#dummy" > "$depfile"
   fi
   rm -f "$tmpdepfile"
   ;;
 
 aix)
   # The C for AIX Compiler uses -M and outputs the dependencies
   # in a .u file.  This file always lives in the current directory.
   # Also, the AIX compiler puts `$object:' at the start of each line;
   # $object doesn't have directory information.
   stripped=`echo "$object" | sed -e 's,^.*/,,' -e 's/\(.*\)\..*$/\1/'`
   tmpdepfile="$stripped.u"
   outname="$stripped.o"
   if test "$libtool" = yes; then
     "$@" -Wc,-M
   else
     "$@" -M
   fi
 
   stat=$?
   if test $stat -eq 0; then :
   else
     rm -f "$tmpdepfile"
     exit $stat
   fi
 
   if test -f "$tmpdepfile"; then
     # Each line is of the form `foo.o: dependent.h'.
     # Do two passes, one to just change these to
     # `$object: dependent.h' and one to simply `dependent.h:'.
     sed -e "s,^$outname:,$object :," < "$tmpdepfile" > "$depfile"
     sed -e "s,^$outname: \(.*\)$,\1:," < "$tmpdepfile" >> "$depfile"
   else
     # The sourcefile does not contain any dependencies, so just
     # store a dummy comment line, to avoid errors with the Makefile
     # "include basename.Plo" scheme.
     echo "#dummy" > "$depfile"
   fi
   rm -f "$tmpdepfile"
   ;;
 
 tru64)
    # The Tru64 compiler uses -MD to generate dependencies as a side
    # effect.  `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
    # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put 
    # dependencies in `foo.d' instead, so we check for that too.
    # Subdirectories are respected.
 
    base=`echo "$object" | sed -e 's/\.o$//' -e 's/\.lo$//'`
    tmpdepfile1="$base.o.d"
    tmpdepfile2="$base.d"
    if test "$libtool" = yes; then
       "$@" -Wc,-MD
    else
       "$@" -MD
    fi
 
    stat=$?
    if test $stat -eq 0; then :
    else
       rm -f "$tmpdepfile1" "$tmpdepfile2"
       exit $stat
    fi
 
    if test -f "$tmpdepfile1"; then
       tmpdepfile="$tmpdepfile1"
    else
       tmpdepfile="$tmpdepfile2"
    fi
    if test -f "$tmpdepfile"; then
       sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
       # That's a space and a tab in the [].
       sed -e 's,^.*\.[a-z]*:[ 	]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
    else
       echo "#dummy" > "$depfile"
    fi
    rm -f "$tmpdepfile"
    ;;
 
 #nosideeffect)
   # This comment above is used by automake to tell side-effect
   # dependency tracking mechanisms from slower ones.
 
 dashmstdout)
   # Important note: in order to support this mode, a compiler *must*
   # always write the proprocessed file to stdout, regardless of -o,
   # because we must use -o when running libtool.
   test -z "$dashmflag" && dashmflag=-M
   ( IFS=" "
     case " $* " in
     *" --mode=compile "*) # this is libtool, let us make it quiet
       for arg
       do # cycle over the arguments
         case "$arg" in
 	"--mode=compile")
 	  # insert --quiet before "--mode=compile"
 	  set fnord "$@" --quiet
 	  shift # fnord
 	  ;;
 	esac
 	set fnord "$@" "$arg"
 	shift # fnord
 	shift # "$arg"
       done
       ;;
     esac
     "$@" $dashmflag | sed 's:^[^:]*\:[ 	]*:'"$object"'\: :' > "$tmpdepfile"
   ) &
   proc=$!
   "$@"
   stat=$?
   wait "$proc"
   if test "$stat" != 0; then exit $stat; fi
   rm -f "$depfile"
   cat < "$tmpdepfile" > "$depfile"
   tr ' ' '
 ' < "$tmpdepfile" | \
 ## Some versions of the HPUX 10.20 sed can't process this invocation
 ## correctly.  Breaking it into two sed invocations is a workaround.
     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
 dashXmstdout)
   # This case only exists to satisfy depend.m4.  It is never actually
   # run, as this mode is specially recognized in the preamble.
   exit 1
   ;;
 
 makedepend)
   # X makedepend
   (
     shift
     cleared=no
     for arg in "$@"; do
       case $cleared in no)
         set ""; shift
 	cleared=yes
       esac
       case "$arg" in
         -D*|-I*)
 	  set fnord "$@" "$arg"; shift;;
 	-*)
 	  ;;
 	*)
 	  set fnord "$@" "$arg"; shift;;
       esac
     done
     obj_suffix="`echo $object | sed 's/^.*\././'`"
     touch "$tmpdepfile"
     ${MAKEDEPEND-makedepend} 2>/dev/null -o"$obj_suffix" -f"$tmpdepfile" "$@"
   ) &
   proc=$!
   "$@"
   stat=$?
   wait "$proc"
   if test "$stat" != 0; then exit $stat; fi
   rm -f "$depfile"
   cat < "$tmpdepfile" > "$depfile"
   sed '1,2d' "$tmpdepfile" | tr ' ' '
 ' | \
 ## Some versions of the HPUX 10.20 sed can't process this invocation
 ## correctly.  Breaking it into two sed invocations is a workaround.
     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
   rm -f "$tmpdepfile" "$tmpdepfile".bak
   ;;
 
 cpp)
   # Important note: in order to support this mode, a compiler *must*
   # always write the proprocessed file to stdout, regardless of -o,
   # because we must use -o when running libtool.
   ( IFS=" "
     case " $* " in
     *" --mode=compile "*)
       for arg
       do # cycle over the arguments
         case $arg in
 	"--mode=compile")
 	  # insert --quiet before "--mode=compile"
 	  set fnord "$@" --quiet
 	  shift # fnord
 	  ;;
 	esac
 	set fnord "$@" "$arg"
 	shift # fnord
 	shift # "$arg"
       done
       ;;
     esac
     "$@" -E |
     sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
     sed '$ s: \\$::' > "$tmpdepfile"
   ) &
   proc=$!
   "$@"
   stat=$?
   wait "$proc"
   if test "$stat" != 0; then exit $stat; fi
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
   cat < "$tmpdepfile" >> "$depfile"
   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
 msvisualcpp)
   # Important note: in order to support this mode, a compiler *must*
   # always write the proprocessed file to stdout, regardless of -o,
   # because we must use -o when running libtool.
   ( IFS=" "
     case " $* " in
     *" --mode=compile "*)
       for arg
       do # cycle over the arguments
         case $arg in
 	"--mode=compile")
 	  # insert --quiet before "--mode=compile"
 	  set fnord "$@" --quiet
 	  shift # fnord
 	  ;;
 	esac
 	set fnord "$@" "$arg"
 	shift # fnord
 	shift # "$arg"
       done
       ;;
     esac
     for arg
     do
       case "$arg" in
       "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
 	set fnord "$@"
 	shift
 	shift
 	;;
       *)
 	set fnord "$@" "$arg"
 	shift
 	shift
 	;;
       esac
     done
     "$@" -E |
     sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
   ) &
   proc=$!
   "$@"
   stat=$?
   wait "$proc"
   if test "$stat" != 0; then exit $stat; fi
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::	\1 \\:p' >> "$depfile"
   echo "	" >> "$depfile"
   . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
 none)
   exec "$@"
   ;;
 
 *)
   echo "Unknown depmode $depmode" 1>&2
   exit 1
   ;;
 esac
 
 exit 0