Imported Upstream version 0.6.5.9

[mirror_spl-debian.git] / config / depcomp

diff --git a/config/depcomp b/config/depcomp
index bd0ac089584a762069b7e0b3f2937e89b9144cc7..fc98710e2a1df7159cd72a01ffc011784748c3bc 100755 (executable)
--- a/config/depcomp
+++ b/config/depcomp
@@ -1,10 +1,9 @@
 #! /bin/sh
 # depcomp - compile a program generating dependencies as side-effects
 
 #! /bin/sh
 # depcomp - compile a program generating dependencies as side-effects
 

-scriptversion=2011-12-04.11; # UTC
+scriptversion=2013-05-30.07; # UTC

 
 

-# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009, 2010,
-# 2011 Free Software Foundation, Inc.
+# Copyright (C) 1999-2014 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
 
 # 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


@@ -28,9 +27,9 @@ scriptversion=2011-12-04.11; # UTC
 
 case $1 in
   '')
 
 case $1 in
   '')

-     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
-     exit 1;
-     ;;
+    echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+    exit 1;
+    ;;

   -h | --h*)
     cat <<\EOF
 Usage: depcomp [--help] [--version] PROGRAM [ARGS]
   -h | --h*)
     cat <<\EOF
 Usage: depcomp [--help] [--version] PROGRAM [ARGS]


@@ -40,8 +39,8 @@ as side-effects.
 
 Environment variables:
   depmode     Dependency tracking mode.
 
 Environment variables:
   depmode     Dependency tracking mode.

-  source      Source file read by `PROGRAMS ARGS'.
-  object      Object file output by `PROGRAMS ARGS'.
+  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 outputting dependencies.
   DEPDIR      directory where to store dependencies.
   depfile     Dependency file to output.
   tmpdepfile  Temporary file to use when outputting dependencies.


@@ -57,6 +56,66 @@ EOF
     ;;
 esac
 
     ;;
 esac
 

+# Get the directory component of the given path, and save it in the
+# global variables '$dir'.  Note that this directory component will
+# be either empty or ending with a '/' character.  This is deliberate.
+set_dir_from ()
+{
+  case $1 in
+    */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
+      *) dir=;;
+  esac
+}
+
+# Get the suffix-stripped basename of the given path, and save it the
+# global variable '$base'.
+set_base_from ()
+{
+  base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
+}
+
+# If no dependency file was actually created by the compiler invocation,
+# we still have to create a dummy depfile, to avoid errors with the
+# Makefile "include basename.Plo" scheme.
+make_dummy_depfile ()
+{
+  echo "#dummy" > "$depfile"
+}
+
+# Factor out some common post-processing of the generated depfile.
+# Requires the auxiliary global variable '$tmpdepfile' to be set.
+aix_post_process_depfile ()
+{
+  # If the compiler actually managed to produce a dependency file,
+  # post-process it.
+  if test -f "$tmpdepfile"; then
+    # Each line is of the form 'foo.o: dependency.h'.
+    # Do two passes, one to just change these to
+    #   $object: dependency.h
+    # and one to simply output
+    #   dependency.h:
+    # which is needed to avoid the deleted-header problem.
+    { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
+      sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
+    } > "$depfile"
+    rm -f "$tmpdepfile"
+  else
+    make_dummy_depfile
+  fi
+}
+
+# A tabulation character.
+tab='  '
+# A newline character.
+nl='
+'
+# Character ranges might be problematic outside the C locale.
+# These definitions help.
+upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
+lower=abcdefghijklmnopqrstuvwxyz
+digits=0123456789
+alpha=${upper}${lower}
+

 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
   echo "depcomp: Variables source, object and depmode must be set" 1>&2
   exit 1
 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
   echo "depcomp: Variables source, object and depmode must be set" 1>&2
   exit 1


@@ -69,6 +128,9 @@ tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
 
 rm -f "$tmpdepfile"
 
 
 rm -f "$tmpdepfile"
 

+# Avoid interferences from the environment.
+gccflag= dashmflag=
+

 # 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
 # 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


@@ -80,26 +142,32 @@ if test "$depmode" = hp; then
 fi
 
 if test "$depmode" = dashXmstdout; then
 fi
 
 if test "$depmode" = dashXmstdout; then

-   # This is just like dashmstdout with a different argument.
-   dashmflag=-xM
-   depmode=dashmstdout
+  # This is just like dashmstdout with a different argument.
+  dashmflag=-xM
+  depmode=dashmstdout

 fi
 
 cygpath_u="cygpath -u -f -"
 if test "$depmode" = msvcmsys; then
 fi
 
 cygpath_u="cygpath -u -f -"
 if test "$depmode" = msvcmsys; then

-   # This is just like msvisualcpp but w/o cygpath translation.
-   # Just convert the backslash-escaped backslashes to single forward
-   # slashes to satisfy depend.m4
-   cygpath_u='sed s,\\\\,/,g'
-   depmode=msvisualcpp
+  # This is just like msvisualcpp but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvisualcpp

 fi
 
 if test "$depmode" = msvc7msys; then
 fi
 
 if test "$depmode" = msvc7msys; then

-   # This is just like msvc7 but w/o cygpath translation.
-   # Just convert the backslash-escaped backslashes to single forward
-   # slashes to satisfy depend.m4
-   cygpath_u='sed s,\\\\,/,g'
-   depmode=msvc7
+  # This is just like msvc7 but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvc7
+fi
+
+if test "$depmode" = xlc; then
+  # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
+  gccflag=-qmakedep=gcc,-MF
+  depmode=gcc

 fi
 
 case "$depmode" in
 fi
 
 case "$depmode" in


@@ -122,8 +190,7 @@ gcc3)
   done
   "$@"
   stat=$?
   done
   "$@"
   stat=$?

-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then

     rm -f "$tmpdepfile"
     exit $stat
   fi
     rm -f "$tmpdepfile"
     exit $stat
   fi


@@ -131,13 +198,17 @@ gcc3)
   ;;
 
 gcc)
   ;;
 
 gcc)

+## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
+## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
+## (see the conditional assignment to $gccflag above).

 ## 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
 ## 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).
+##   -MM, not -M (despite what the docs say).  Also, it might not be
+##   supported by the other compilers which use the 'gcc' depmode.

 ## - Using -M directly means running the compiler twice (even worse
 ##   than renaming).
   if test -z "$gccflag"; then
 ## - Using -M directly means running the compiler twice (even worse
 ##   than renaming).
   if test -z "$gccflag"; then


@@ -145,33 +216,31 @@ gcc)
   fi
   "$@" -Wp,"$gccflag$tmpdepfile"
   stat=$?
   fi
   "$@" -Wp,"$gccflag$tmpdepfile"
   stat=$?

-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then

     rm -f "$tmpdepfile"
     exit $stat
   fi
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
     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.
+  # The second -e expression handles DOS-style file names with drive
+  # letters.

   sed -e 's/^[^:]*: / /' \
       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
   sed -e 's/^[^:]*: / /' \
       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"

-## This next piece of magic avoids the `deleted header file' problem.
+## 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.
 ## 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
+## 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.  hp depmode also adds that space, but also prefixes the VPATH
 ## to the object.  Take care to not repeat it in the output.
 ## Some versions of the HPUX 10.20 sed can't process this invocation
 ## correctly.  Breaking it into two sed invocations is a workaround.
 ## that the space means something, we add a space to the output as
 ## well.  hp depmode also adds that space, but also prefixes the VPATH
 ## to the object.  Take care to not repeat it in the output.
 ## 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 '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
-      | sed -e 's/$/ :/' >> "$depfile"
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"

   rm -f "$tmpdepfile"
   ;;
 
   rm -f "$tmpdepfile"
   ;;
 


@@ -189,8 +258,7 @@ sgi)
     "$@" -MDupdate "$tmpdepfile"
   fi
   stat=$?
     "$@" -MDupdate "$tmpdepfile"
   fi
   stat=$?

-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then

     rm -f "$tmpdepfile"
     exit $stat
   fi
     rm -f "$tmpdepfile"
     exit $stat
   fi


@@ -198,43 +266,41 @@ sgi)
 
   if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
     echo "$object : \\" > "$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;
     # 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
+    # the IRIX cc adds comments like '#:fec' to the end of the

     # dependency line.
     # dependency line.

-    tr ' ' '
-' < "$tmpdepfile" \
-    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
-    tr '
-' ' ' >> "$depfile"
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
+      | tr "$nl" ' ' >> "$depfile"

     echo >> "$depfile"
     echo >> "$depfile"

-

     # The second pass generates a dummy entry for each header file.
     # The second pass generates a dummy entry for each header file.

-    tr ' ' '
-' < "$tmpdepfile" \
-   | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
-   >> "$depfile"
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
+      >> "$depfile"

   else
   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"
+    make_dummy_depfile

   fi
   rm -f "$tmpdepfile"
   ;;
 
   fi
   rm -f "$tmpdepfile"
   ;;
 

+xlc)
+  # 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
+  ;;
+

 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
 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 `$object:' at the
+  # current directory.  Also, the AIX compiler puts '$object:' at the

   # start of each line; $object doesn't have directory information.
   # Version 6 uses the directory in both cases.
   # start of each line; $object doesn't have directory information.
   # Version 6 uses the directory in both cases.

-  dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
-  test "x$dir" = "x$object" && dir=
-  base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+  set_dir_from "$object"
+  set_base_from "$object"

   if test "$libtool" = yes; then
     tmpdepfile1=$dir$base.u
     tmpdepfile2=$base.u
   if test "$libtool" = yes; then
     tmpdepfile1=$dir$base.u
     tmpdepfile2=$base.u


@@ -247,9 +313,7 @@ aix)
     "$@" -M
   fi
   stat=$?
     "$@" -M
   fi
   stat=$?

-
-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then

     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
     exit $stat
   fi
     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
     exit $stat
   fi


@@ -258,44 +322,100 @@ aix)
   do
     test -f "$tmpdepfile" && break
   done
   do
     test -f "$tmpdepfile" && break
   done

-  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,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
-    # That's a tab and a space in the [].
-    sed -e 's,^.*\.[a-z]*:[     ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$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" > "$depfile"
+  aix_post_process_depfile
+  ;;
+
+tcc)
+  # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
+  # FIXME: That version still under development at the moment of writing.
+  #        Make that this statement remains true also for stable, released
+  #        versions.
+  # It will wrap lines (doesn't matter whether long or short) with a
+  # trailing '\', as in:
+  #
+  #   foo.o : \
+  #    foo.c \
+  #    foo.h \
+  #
+  # It will put a trailing '\' even on the last line, and will use leading
+  # spaces rather than leading tabs (at least since its commit 0394caf7
+  # "Emit spaces for -MD").
+  "$@" -MD -MF "$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat

   fi
   fi

+  rm -f "$depfile"
+  # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
+  # We have to change lines of the first kind to '$object: \'.
+  sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
+  # And for each line of the second kind, we have to emit a 'dep.h:'
+  # dummy dependency, to avoid the deleted-header problem.
+  sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"

   rm -f "$tmpdepfile"
   ;;
 
   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
+## The order of this option in the case statement is important, since the
+## shell code in configure will try each of these formats in the order
+## listed in this file.  A plain '-MD' option would be understood by many
+## compilers, so we must ensure this comes after the gcc and icc options.
+pgcc)
+  # Portland's C compiler understands '-MD'.
+  # Will always output deps to 'file.d' where file is the root name of the
+  # source file under compilation, even if file resides in a subdirectory.
+  # The object file name does not affect the name of the '.d' file.
+  # pgcc 10.2 will output

   #    foo.o: sub/foo.c sub/foo.h
   #    foo.o: sub/foo.c sub/foo.h

-  # and will wrap long lines using \ :
+  # and will wrap long lines using '\' :

   #    foo.o: sub/foo.c ... \
   #     sub/foo.h ... \
   #     ...
   #    foo.o: sub/foo.c ... \
   #     sub/foo.h ... \
   #     ...

+  set_dir_from "$object"
+  # Use the source, not the object, to determine the base name, since
+  # that's sadly what pgcc will do too.
+  set_base_from "$source"
+  tmpdepfile=$base.d
+
+  # For projects that build the same source file twice into different object
+  # files, the pgcc approach of using the *source* file root name can cause
+  # problems in parallel builds.  Use a locking strategy to avoid stomping on
+  # the same $tmpdepfile.
+  lockdir=$base.d-lock
+  trap "
+    echo '$0: caught signal, cleaning up...' >&2
+    rmdir '$lockdir'
+    exit 1
+  " 1 2 13 15
+  numtries=100
+  i=$numtries
+  while test $i -gt 0; do
+    # mkdir is a portable test-and-set.
+    if mkdir "$lockdir" 2>/dev/null; then
+      # This process acquired the lock.
+      "$@" -MD
+      stat=$?
+      # Release the lock.
+      rmdir "$lockdir"
+      break
+    else
+      # If the lock is being held by a different process, wait
+      # until the winning process is done or we timeout.
+      while test -d "$lockdir" && test $i -gt 0; do
+        sleep 1
+        i=`expr $i - 1`
+      done
+    fi
+    i=`expr $i - 1`
+  done
+  trap - 1 2 13 15
+  if test $i -le 0; then
+    echo "$0: failed to acquire lock after $numtries attempts" >&2
+    echo "$0: check lockdir '$lockdir'" >&2
+    exit 1
+  fi

 
 

-  "$@" -MD -MF "$tmpdepfile"
-  stat=$?
-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then

     rm -f "$tmpdepfile"
     exit $stat
   fi
     rm -f "$tmpdepfile"
     exit $stat
   fi


@@ -307,8 +427,8 @@ icc)
   sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
   # Some versions of the HPUX 10.20 sed can't process this invocation
   # correctly.  Breaking it into two sed invocations is a workaround.
   sed "s,^[^:]*:,$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"
+  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
+    | sed -e 's/$/ :/' >> "$depfile"

   rm -f "$tmpdepfile"
   ;;
 
   rm -f "$tmpdepfile"
   ;;
 


@@ -319,9 +439,8 @@ hp2)
   # 'foo.d', which lands next to the object file, wherever that
   # happens to be.
   # Much of this is similar to the tru64 case; see comments there.
   # 'foo.d', which lands next to the object file, wherever that
   # happens to be.
   # Much of this is similar to the tru64 case; see comments there.

-  dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
-  test "x$dir" = "x$object" && dir=
-  base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+  set_dir_from  "$object"
+  set_base_from "$object"

   if test "$libtool" = yes; then
     tmpdepfile1=$dir$base.d
     tmpdepfile2=$dir.libs/$base.d
   if test "$libtool" = yes; then
     tmpdepfile1=$dir$base.d
     tmpdepfile2=$dir.libs/$base.d


@@ -332,8 +451,7 @@ hp2)
     "$@" +Maked
   fi
   stat=$?
     "$@" +Maked
   fi
   stat=$?

-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then

      rm -f "$tmpdepfile1" "$tmpdepfile2"
      exit $stat
   fi
      rm -f "$tmpdepfile1" "$tmpdepfile2"
      exit $stat
   fi


@@ -343,77 +461,61 @@ hp2)
     test -f "$tmpdepfile" && break
   done
   if test -f "$tmpdepfile"; then
     test -f "$tmpdepfile" && break
   done
   if test -f "$tmpdepfile"; then

-    sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
-    # Add `dependent.h:' lines.
+    sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
+    # Add 'dependent.h:' lines.

     sed -ne '2,${
     sed -ne '2,${

-              s/^ *//
-              s/ \\*$//
-              s/$/:/
-              p
-            }' "$tmpdepfile" >> "$depfile"
+               s/^ *//
+               s/ \\*$//
+               s/$/:/
+               p
+             }' "$tmpdepfile" >> "$depfile"

   else
   else

-    echo "#dummy" > "$depfile"
+    make_dummy_depfile

   fi
   rm -f "$tmpdepfile" "$tmpdepfile2"
   ;;
 
 tru64)
   fi
   rm -f "$tmpdepfile" "$tmpdepfile2"
   ;;
 
 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
-      # With Tru64 cc, shared objects can also be used to make a
-      # static library.  This mechanism is used in libtool 1.4 series to
-      # handle both shared and static libraries in a single compilation.
-      # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
-      #
-      # With libtool 1.5 this exception was removed, and libtool now
-      # generates 2 separate objects for the 2 libraries.  These two
-      # compilations output dependencies in $dir.libs/$base.o.d and
-      # in $dir$base.o.d.  We have to check for both files, because
-      # one of the two compilations can be disabled.  We should prefer
-      # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
-      # automatically cleaned when .libs/ is deleted, while ignoring
-      # the former would cause a distcleancheck panic.
-      tmpdepfile1=$dir.libs/$base.lo.d   # libtool 1.4
-      tmpdepfile2=$dir$base.o.d          # libtool 1.5
-      tmpdepfile3=$dir.libs/$base.o.d    # libtool 1.5
-      tmpdepfile4=$dir.libs/$base.d      # Compaq CCC V6.2-504
-      "$@" -Wc,-MD
-   else
-      tmpdepfile1=$dir$base.o.d
-      tmpdepfile2=$dir$base.d
-      tmpdepfile3=$dir$base.d
-      tmpdepfile4=$dir$base.d
-      "$@" -MD
-   fi
-
-   stat=$?
-   if test $stat -eq 0; then :
-   else
-      rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
-      exit $stat
-   fi
-
-   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
-   do
-     test -f "$tmpdepfile" && break
-   done
-   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 "$tmpdepfile"
-   ;;
+  # The Tru64 compiler uses -MD to generate dependencies as a side
+  # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
+  # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
+  # dependencies in 'foo.d' instead, so we check for that too.
+  # Subdirectories are respected.
+  set_dir_from  "$object"
+  set_base_from "$object"
+
+  if test "$libtool" = yes; then
+    # Libtool generates 2 separate objects for the 2 libraries.  These
+    # two compilations output dependencies in $dir.libs/$base.o.d and
+    # in $dir$base.o.d.  We have to check for both files, because
+    # one of the two compilations can be disabled.  We should prefer
+    # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
+    # automatically cleaned when .libs/ is deleted, while ignoring
+    # the former would cause a distcleancheck panic.
+    tmpdepfile1=$dir$base.o.d          # libtool 1.5
+    tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
+    tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
+    "$@" -Wc,-MD
+  else
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir$base.d
+    tmpdepfile3=$dir$base.d
+    "$@" -MD
+  fi
+
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    exit $stat
+  fi
+
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  # Same post-processing that is required for AIX mode.
+  aix_post_process_depfile
+  ;;

 
 msvc7)
   if test "$libtool" = yes; then
 
 msvc7)
   if test "$libtool" = yes; then


@@ -424,8 +526,7 @@ msvc7)
   "$@" $showIncludes > "$tmpdepfile"
   stat=$?
   grep -v '^Note: including file: ' "$tmpdepfile"
   "$@" $showIncludes > "$tmpdepfile"
   stat=$?
   grep -v '^Note: including file: ' "$tmpdepfile"

-  if test "$stat" = 0; then :
-  else
+  if test $stat -ne 0; then

     rm -f "$tmpdepfile"
     exit $stat
   fi
     rm -f "$tmpdepfile"
     exit $stat
   fi


@@ -443,14 +544,15 @@ msvc7)
   p
 }' | $cygpath_u | sort -u | sed -n '
 s/ /\\ /g
   p
 }' | $cygpath_u | sort -u | sed -n '
 s/ /\\ /g

-s/\(.*\)/      \1 \\/p
+s/\(.*\)/'"$tab"'\1 \\/p

 s/.\(.*\) \\/\1:/
 H
 $ {
 s/.\(.*\) \\/\1:/
 H
 $ {

-  s/.*/        /
+  s/.*/'"$tab"'/

   G
   p
 }' >> "$depfile"
   G
   p
 }' >> "$depfile"

+  echo >> "$depfile" # make sure the fragment doesn't end with a backslash

   rm -f "$tmpdepfile"
   ;;
 
   rm -f "$tmpdepfile"
   ;;
 


@@ -478,7 +580,7 @@ dashmstdout)
     shift
   fi
 
     shift
   fi
 

-  # Remove `-o $object'.
+  # Remove '-o $object'.

   IFS=" "
   for arg
   do
   IFS=" "
   for arg
   do


@@ -498,18 +600,18 @@ dashmstdout)
   done
 
   test -z "$dashmflag" && dashmflag=-M
   done
 
   test -z "$dashmflag" && dashmflag=-M

-  # Require at least two characters before searching for `:'
+  # Require at least two characters before searching for ':'

   # in the target name.  This is to cope with DOS-style filenames:
   # 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.
+  # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.

   "$@" $dashmflag |
   "$@" $dashmflag |

-    sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
+    sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"

   rm -f "$depfile"
   cat < "$tmpdepfile" > "$depfile"
   rm -f "$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"
+  # Some versions of the HPUX 10.20 sed can't process this sed invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"

   rm -f "$tmpdepfile"
   ;;
 
   rm -f "$tmpdepfile"
   ;;
 


@@ -562,11 +664,12 @@ makedepend)
   # makedepend may prepend the VPATH from the source file name to the object.
   # No need to regex-escape $object, excess matching of '.' is harmless.
   sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
   # makedepend may prepend the VPATH from the source file name to the object.
   # No need to regex-escape $object, excess matching of '.' is harmless.
   sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$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"
+  # Some versions of the HPUX 10.20 sed can't process the last invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed '1,2d' "$tmpdepfile" \
+    | tr ' ' "$nl" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"

   rm -f "$tmpdepfile" "$tmpdepfile".bak
   ;;
 
   rm -f "$tmpdepfile" "$tmpdepfile".bak
   ;;
 


@@ -583,7 +686,7 @@ cpp)
     shift
   fi
 
     shift
   fi
 

-  # Remove `-o $object'.
+  # Remove '-o $object'.

   IFS=" "
   for arg
   do
   IFS=" "
   for arg
   do


@@ -602,10 +705,10 @@ cpp)
     esac
   done
 
     esac
   done
 

-  "$@" -E |
-    sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
-       -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
-    sed '$ s: \\$::' > "$tmpdepfile"
+  "$@" -E \
+    | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+             -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+    | sed '$ s: \\$::' > "$tmpdepfile"

   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
   cat < "$tmpdepfile" >> "$depfile"
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
   cat < "$tmpdepfile" >> "$depfile"


@@ -637,23 +740,23 @@ msvisualcpp)
       shift
       ;;
     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
       shift
       ;;
     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")

-       set fnord "$@"
-       shift
-       shift
-       ;;
+        set fnord "$@"
+        shift
+        shift
+        ;;

     *)
     *)

-       set fnord "$@" "$arg"
-       shift
-       shift
-       ;;
+        set fnord "$@" "$arg"
+        shift
+        shift
+        ;;

     esac
   done
   "$@" -E 2>/dev/null |
   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
     esac
   done
   "$@" -E 2>/dev/null |
   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"

-  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::     \1 \\:p' >> "$depfile"
-  echo "       " >> "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
+  echo "$tab" >> "$depfile"

   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;