#! /bin/sh
# depcomp - compile a program generating dependencies as side-effects

scriptversion=2004-05-31.23

# Copyright (C) 1999, 2000, 2003, 2004 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 <[email protected]>.

case $1 in
 '')
    echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
    exit 1;
    ;;
 -h | --h*)
   cat <<\EOF
Usage: depcomp [--help] [--version] PROGRAM [ARGS]

Run PROGRAMS ARGS to compile a file, generating dependencies
as side-effects.

Environment variables:
 depmode     Dependency tracking mode.
 source      Source file read by `PROGRAMS ARGS'.
 object      Object file output by `PROGRAMS ARGS'.
 DEPDIR      directory where to store dependencies.
 depfile     Dependency file to output.
 tmpdepfile  Temporary file to use when outputing dependencies.
 libtool     Whether libtool is used (yes/no).

Report bugs to <[email protected]>.
EOF
   exit 0
   ;;
 -v | --v*)
   echo "depcomp $scriptversion"
   exit 0
   ;;
esac

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

# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
depfile=${depfile-`echo "$object" |
 sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
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.  In older versions, this file always lives in the
 # current directory.  Also, the AIX compiler puts `$object:' at the
 # start of each line; $object doesn't have directory information.
 # Version 6 uses the directory in both cases.
 stripped=`echo "$object" | sed 's/\(.*\)\..*$/\1/'`
 tmpdepfile="$stripped.u"
 if test "$libtool" = yes; then
   "$@" -Wc,-M
 else
   "$@" -M
 fi
 stat=$?

 if test -f "$tmpdepfile"; then :
 else
   stripped=`echo "$stripped" | sed 's,^.*/,,'`
   tmpdepfile="$stripped.u"
 fi

 if test $stat -eq 0; then :
 else
   rm -f "$tmpdepfile"
   exit $stat
 fi

 if test -f "$tmpdepfile"; then
   outname="$stripped.o"
   # 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"
 ;;

icc)
 # Intel's C compiler understands `-MD -MF file'.  However on
 #    icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
 # ICC 7.0 will fill foo.d with something like
 #    foo.o: sub/foo.c
 #    foo.o: sub/foo.h
 # which is wrong.  We want:
 #    sub/foo.o: sub/foo.c
 #    sub/foo.o: sub/foo.h
 #    sub/foo.c:
 #    sub/foo.h:
 # ICC 7.1 will output
 #    foo.o: sub/foo.c sub/foo.h
 # and will wrap long lines using \ :
 #    foo.o: sub/foo.c ... \
 #     sub/foo.h ... \
 #     ...

 "$@" -MD -MF "$tmpdepfile"
 stat=$?
 if test $stat -eq 0; then :
 else
   rm -f "$tmpdepfile"
   exit $stat
 fi
 rm -f "$depfile"
 # Each line is of the form `foo.o: dependent.h',
 # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
 # Do two passes, one to just change these to
 # `$object: dependent.h' and one to simply `dependent.h:'.
 sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
 # Some versions of the HPUX 10.20 sed can't process this invocation
 # correctly.  Breaking it into two sed invocations is a workaround.
 sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
   sed -e 's/$/ :/' >> "$depfile"
 rm -f "$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.
  dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
  test "x$dir" = "x$object" && dir=
  base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`

  if test "$libtool" = yes; then
     # Dependencies are output in .lo.d with libtool 1.4.
     # With libtool 1.5 they are output both in $dir.libs/$base.o.d
     # and in $dir.libs/$base.o.d and $dir$base.o.d.  We process the
     # latter, because the former will be cleaned when $dir.libs is
     # erased.
     tmpdepfile1="$dir.libs/$base.lo.d"
     tmpdepfile2="$dir$base.o.d"
     tmpdepfile3="$dir.libs/$base.d"
     "$@" -Wc,-MD
  else
     tmpdepfile1="$dir$base.o.d"
     tmpdepfile2="$dir$base.d"
     tmpdepfile3="$dir$base.d"
     "$@" -MD
  fi

  stat=$?
  if test $stat -eq 0; then :
  else
     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
     exit $stat
  fi

  if test -f "$tmpdepfile1"; then
     tmpdepfile="$tmpdepfile1"
  elif test -f "$tmpdepfile2"; then
     tmpdepfile="$tmpdepfile2"
  else
     tmpdepfile="$tmpdepfile3"
  fi
  if test -f "$tmpdepfile"; then
     sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
     # That's a tab and a space in the [].
     sed -e 's,^.*\.[a-z]*:[    ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$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 preprocessed file to stdout, regardless of -o.
 "$@" || exit $?

 # Remove the call to Libtool.
 if test "$libtool" = yes; then
   while test $1 != '--mode=compile'; do
     shift
   done
   shift
 fi

 # Remove `-o $object'.
 IFS=" "
 for arg
 do
   case $arg in
   -o)
     shift
     ;;
   $object)
     shift
     ;;
   *)
     set fnord "$@" "$arg"
     shift # fnord
     shift # $arg
     ;;
   esac
 done

 test -z "$dashmflag" && dashmflag=-M
 # Require at least two characters before searching for `:'
 # in the target name.  This is to cope with DOS-style filenames:
 # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
 "$@" $dashmflag |
   sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
 rm -f "$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)
 "$@" || exit $?
 # Remove any Libtool call
 if test "$libtool" = yes; then
   while test $1 != '--mode=compile'; do
     shift
   done
   shift
 fi
 # X makedepend
 shift
 cleared=no
 for arg in "$@"; do
   case $cleared in
   no)
     set ""; shift
     cleared=yes ;;
   esac
   case "$arg" in
   -D*|-I*)
     set fnord "$@" "$arg"; shift ;;
   # Strip any option that makedepend may not understand.  Remove
   # the object too, otherwise makedepend will parse it as a source file.
   -*|$object)
     ;;
   *)
     set fnord "$@" "$arg"; shift ;;
   esac
 done
 obj_suffix="`echo $object | sed 's/^.*\././'`"
 touch "$tmpdepfile"
 ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
 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 preprocessed file to stdout.
 "$@" || exit $?

 # Remove the call to Libtool.
 if test "$libtool" = yes; then
   while test $1 != '--mode=compile'; do
     shift
   done
   shift
 fi

 # Remove `-o $object'.
 IFS=" "
 for arg
 do
   case $arg in
   -o)
     shift
     ;;
   $object)
     shift
     ;;
   *)
     set fnord "$@" "$arg"
     shift # fnord
     shift # $arg
     ;;
   esac
 done

 "$@" -E |
   sed -n '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
   sed '$ s: \\$::' > "$tmpdepfile"
 rm -f "$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 preprocessed file to stdout, regardless of -o,
 # because we must use -o when running libtool.
 "$@" || exit $?
 IFS=" "
 for arg
 do
   case "$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 > "$tmpdepfile"
 rm -f "$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

# Local Variables:
# mode: shell-script
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# eval: (add-hook 'write-file-hooks 'time-stamp)
# time-stamp-start: "scriptversion="
# time-stamp-format: "%:y-%02m-%02d.%02H"
# time-stamp-end: "$"
# End:

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