#! /bin/sh# depcomp - compile a program generating dependencies as side-effectsscriptversion=2005-07-09.11# Copyright (C) 1999, 2000, 2003, 2004, 2005 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., 51 Franklin Street, Fifth Floor, Boston, MA# 02110-1301, 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>.case $1 in  '')     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2     exit 1;     ;;  -h | --h*)    cat <<\EOFUsage: depcomp [--help] [--version] PROGRAM [ARGS]Run PROGRAMS ARGS to compile a file, generating dependenciesas 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 <bug-automake@gnu.org>.EOF    exit $?    ;;  -v | --v*)    echo "depcomp $scriptversion"    exit $?    ;;esacif test -z "$depmode" || test -z "$source" || test -z "$object"; then  echo "depcomp: Variables source, object and depmode must be set" 1>&2  exit 1fi# 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 "$depmode" = hp; then  # HP compiler uses -M and no extra arg.  gccflag=-M  depmode=gccfiif test "$depmode" = dashXmstdout; then   # This is just like dashmstdout with a different argument.   dashmflag=-xM   depmode=dashmstdoutficase "$depmode" ingcc3)## gcc 3 implements dependency tracking that does exactly what## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like## it if -MD -MP comes after the -MF stuff.  Hmm.  "$@" -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"