Chris@19: #! /bin/sh
Chris@19: # depcomp - compile a program generating dependencies as side-effects
Chris@19: 
Chris@19: scriptversion=2013-05-30.07; # UTC
Chris@19: 
Chris@19: # Copyright (C) 1999-2013 Free Software Foundation, Inc.
Chris@19: 
Chris@19: # This program is free software; you can redistribute it and/or modify
Chris@19: # it under the terms of the GNU General Public License as published by
Chris@19: # the Free Software Foundation; either version 2, or (at your option)
Chris@19: # any later version.
Chris@19: 
Chris@19: # This program is distributed in the hope that it will be useful,
Chris@19: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@19: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@19: # GNU General Public License for more details.
Chris@19: 
Chris@19: # You should have received a copy of the GNU General Public License
Chris@19: # along with this program.  If not, see <http://www.gnu.org/licenses/>.
Chris@19: 
Chris@19: # As a special exception to the GNU General Public License, if you
Chris@19: # distribute this file as part of a program that contains a
Chris@19: # configuration script generated by Autoconf, you may include it under
Chris@19: # the same distribution terms that you use for the rest of that program.
Chris@19: 
Chris@19: # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
Chris@19: 
Chris@19: case $1 in
Chris@19:   '')
Chris@19:     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
Chris@19:     exit 1;
Chris@19:     ;;
Chris@19:   -h | --h*)
Chris@19:     cat <<\EOF
Chris@19: Usage: depcomp [--help] [--version] PROGRAM [ARGS]
Chris@19: 
Chris@19: Run PROGRAMS ARGS to compile a file, generating dependencies
Chris@19: as side-effects.
Chris@19: 
Chris@19: Environment variables:
Chris@19:   depmode     Dependency tracking mode.
Chris@19:   source      Source file read by 'PROGRAMS ARGS'.
Chris@19:   object      Object file output by 'PROGRAMS ARGS'.
Chris@19:   DEPDIR      directory where to store dependencies.
Chris@19:   depfile     Dependency file to output.
Chris@19:   tmpdepfile  Temporary file to use when outputting dependencies.
Chris@19:   libtool     Whether libtool is used (yes/no).
Chris@19: 
Chris@19: Report bugs to <bug-automake@gnu.org>.
Chris@19: EOF
Chris@19:     exit $?
Chris@19:     ;;
Chris@19:   -v | --v*)
Chris@19:     echo "depcomp $scriptversion"
Chris@19:     exit $?
Chris@19:     ;;
Chris@19: esac
Chris@19: 
Chris@19: # Get the directory component of the given path, and save it in the
Chris@19: # global variables '$dir'.  Note that this directory component will
Chris@19: # be either empty or ending with a '/' character.  This is deliberate.
Chris@19: set_dir_from ()
Chris@19: {
Chris@19:   case $1 in
Chris@19:     */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
Chris@19:       *) dir=;;
Chris@19:   esac
Chris@19: }
Chris@19: 
Chris@19: # Get the suffix-stripped basename of the given path, and save it the
Chris@19: # global variable '$base'.
Chris@19: set_base_from ()
Chris@19: {
Chris@19:   base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
Chris@19: }
Chris@19: 
Chris@19: # If no dependency file was actually created by the compiler invocation,
Chris@19: # we still have to create a dummy depfile, to avoid errors with the
Chris@19: # Makefile "include basename.Plo" scheme.
Chris@19: make_dummy_depfile ()
Chris@19: {
Chris@19:   echo "#dummy" > "$depfile"
Chris@19: }
Chris@19: 
Chris@19: # Factor out some common post-processing of the generated depfile.
Chris@19: # Requires the auxiliary global variable '$tmpdepfile' to be set.
Chris@19: aix_post_process_depfile ()
Chris@19: {
Chris@19:   # If the compiler actually managed to produce a dependency file,
Chris@19:   # post-process it.
Chris@19:   if test -f "$tmpdepfile"; then
Chris@19:     # Each line is of the form 'foo.o: dependency.h'.
Chris@19:     # Do two passes, one to just change these to
Chris@19:     #   $object: dependency.h
Chris@19:     # and one to simply output
Chris@19:     #   dependency.h:
Chris@19:     # which is needed to avoid the deleted-header problem.
Chris@19:     { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
Chris@19:       sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
Chris@19:     } > "$depfile"
Chris@19:     rm -f "$tmpdepfile"
Chris@19:   else
Chris@19:     make_dummy_depfile
Chris@19:   fi
Chris@19: }
Chris@19: 
Chris@19: # A tabulation character.
Chris@19: tab='	'
Chris@19: # A newline character.
Chris@19: nl='
Chris@19: '
Chris@19: # Character ranges might be problematic outside the C locale.
Chris@19: # These definitions help.
Chris@19: upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
Chris@19: lower=abcdefghijklmnopqrstuvwxyz
Chris@19: digits=0123456789
Chris@19: alpha=${upper}${lower}
Chris@19: 
Chris@19: if test -z "$depmode" || test -z "$source" || test -z "$object"; then
Chris@19:   echo "depcomp: Variables source, object and depmode must be set" 1>&2
Chris@19:   exit 1
Chris@19: fi
Chris@19: 
Chris@19: # Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
Chris@19: depfile=${depfile-`echo "$object" |
Chris@19:   sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
Chris@19: tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
Chris@19: 
Chris@19: rm -f "$tmpdepfile"
Chris@19: 
Chris@19: # Avoid interferences from the environment.
Chris@19: gccflag= dashmflag=
Chris@19: 
Chris@19: # Some modes work just like other modes, but use different flags.  We
Chris@19: # parameterize here, but still list the modes in the big case below,
Chris@19: # to make depend.m4 easier to write.  Note that we *cannot* use a case
Chris@19: # here, because this file can only contain one case statement.
Chris@19: if test "$depmode" = hp; then
Chris@19:   # HP compiler uses -M and no extra arg.
Chris@19:   gccflag=-M
Chris@19:   depmode=gcc
Chris@19: fi
Chris@19: 
Chris@19: if test "$depmode" = dashXmstdout; then
Chris@19:   # This is just like dashmstdout with a different argument.
Chris@19:   dashmflag=-xM
Chris@19:   depmode=dashmstdout
Chris@19: fi
Chris@19: 
Chris@19: cygpath_u="cygpath -u -f -"
Chris@19: if test "$depmode" = msvcmsys; then
Chris@19:   # This is just like msvisualcpp but w/o cygpath translation.
Chris@19:   # Just convert the backslash-escaped backslashes to single forward
Chris@19:   # slashes to satisfy depend.m4
Chris@19:   cygpath_u='sed s,\\\\,/,g'
Chris@19:   depmode=msvisualcpp
Chris@19: fi
Chris@19: 
Chris@19: if test "$depmode" = msvc7msys; then
Chris@19:   # This is just like msvc7 but w/o cygpath translation.
Chris@19:   # Just convert the backslash-escaped backslashes to single forward
Chris@19:   # slashes to satisfy depend.m4
Chris@19:   cygpath_u='sed s,\\\\,/,g'
Chris@19:   depmode=msvc7
Chris@19: fi
Chris@19: 
Chris@19: if test "$depmode" = xlc; then
Chris@19:   # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
Chris@19:   gccflag=-qmakedep=gcc,-MF
Chris@19:   depmode=gcc
Chris@19: fi
Chris@19: 
Chris@19: case "$depmode" in
Chris@19: gcc3)
Chris@19: ## gcc 3 implements dependency tracking that does exactly what
Chris@19: ## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
Chris@19: ## it if -MD -MP comes after the -MF stuff.  Hmm.
Chris@19: ## Unfortunately, FreeBSD c89 acceptance of flags depends upon
Chris@19: ## the command line argument order; so add the flags where they
Chris@19: ## appear in depend2.am.  Note that the slowdown incurred here
Chris@19: ## affects only configure: in makefiles, %FASTDEP% shortcuts this.
Chris@19:   for arg
Chris@19:   do
Chris@19:     case $arg in
Chris@19:     -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
Chris@19:     *)  set fnord "$@" "$arg" ;;
Chris@19:     esac
Chris@19:     shift # fnord
Chris@19:     shift # $arg
Chris@19:   done
Chris@19:   "$@"
Chris@19:   stat=$?
Chris@19:   if test $stat -ne 0; then
Chris@19:     rm -f "$tmpdepfile"
Chris@19:     exit $stat
Chris@19:   fi
Chris@19:   mv "$tmpdepfile" "$depfile"
Chris@19:   ;;
Chris@19: 
Chris@19: gcc)
Chris@19: ## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
Chris@19: ## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
Chris@19: ## (see the conditional assignment to $gccflag above).
Chris@19: ## There are various ways to get dependency output from gcc.  Here's
Chris@19: ## why we pick this rather obscure method:
Chris@19: ## - Don't want to use -MD because we'd like the dependencies to end
Chris@19: ##   up in a subdir.  Having to rename by hand is ugly.
Chris@19: ##   (We might end up doing this anyway to support other compilers.)
Chris@19: ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
Chris@19: ##   -MM, not -M (despite what the docs say).  Also, it might not be
Chris@19: ##   supported by the other compilers which use the 'gcc' depmode.
Chris@19: ## - Using -M directly means running the compiler twice (even worse
Chris@19: ##   than renaming).
Chris@19:   if test -z "$gccflag"; then
Chris@19:     gccflag=-MD,
Chris@19:   fi
Chris@19:   "$@" -Wp,"$gccflag$tmpdepfile"
Chris@19:   stat=$?
Chris@19:   if test $stat -ne 0; then
Chris@19:     rm -f "$tmpdepfile"
Chris@19:     exit $stat
Chris@19:   fi
Chris@19:   rm -f "$depfile"
Chris@19:   echo "$object : \\" > "$depfile"
Chris@19:   # The second -e expression handles DOS-style file names with drive
Chris@19:   # letters.
Chris@19:   sed -e 's/^[^:]*: / /' \
Chris@19:       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
Chris@19: ## This next piece of magic avoids the "deleted header file" problem.
Chris@19: ## The problem is that when a header file which appears in a .P file
Chris@19: ## is deleted, the dependency causes make to die (because there is
Chris@19: ## typically no way to rebuild the header).  We avoid this by adding
Chris@19: ## dummy dependencies for each header file.  Too bad gcc doesn't do
Chris@19: ## this for us directly.
Chris@19: ## Some versions of gcc put a space before the ':'.  On the theory
Chris@19: ## that the space means something, we add a space to the output as
Chris@19: ## well.  hp depmode also adds that space, but also prefixes the VPATH
Chris@19: ## to the object.  Take care to not repeat it in the output.
Chris@19: ## Some versions of the HPUX 10.20 sed can't process this invocation
Chris@19: ## correctly.  Breaking it into two sed invocations is a workaround.
Chris@19:   tr ' ' "$nl" < "$tmpdepfile" \
Chris@19:     | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
Chris@19:     | sed -e 's/$/ :/' >> "$depfile"
Chris@19:   rm -f "$tmpdepfile"
Chris@19:   ;;
Chris@19: 
Chris@19: hp)
Chris@19:   # This case exists only to let depend.m4 do its work.  It works by
Chris@19:   # looking at the text of this script.  This case will never be run,
Chris@19:   # since it is checked for above.
Chris@19:   exit 1
Chris@19:   ;;
Chris@19: 
Chris@19: sgi)
Chris@19:   if test "$libtool" = yes; then
Chris@19:     "$@" "-Wp,-MDupdate,$tmpdepfile"
Chris@19:   else
Chris@19:     "$@" -MDupdate "$tmpdepfile"
Chris@19:   fi
Chris@19:   stat=$?
Chris@19:   if test $stat -ne 0; then
Chris@19:     rm -f "$tmpdepfile"
Chris@19:     exit $stat
Chris@19:   fi
Chris@19:   rm -f "$depfile"
Chris@19: 
Chris@19:   if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
Chris@19:     echo "$object : \\" > "$depfile"
Chris@19:     # Clip off the initial element (the dependent).  Don't try to be
Chris@19:     # clever and replace this with sed code, as IRIX sed won't handle
Chris@19:     # lines with more than a fixed number of characters (4096 in
Chris@19:     # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
Chris@19:     # the IRIX cc adds comments like '#:fec' to the end of the
Chris@19:     # dependency line.
Chris@19:     tr ' ' "$nl" < "$tmpdepfile" \
Chris@19:       | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
Chris@19:       | tr "$nl" ' ' >> "$depfile"
Chris@19:     echo >> "$depfile"
Chris@19:     # The second pass generates a dummy entry for each header file.
Chris@19:     tr ' ' "$nl" < "$tmpdepfile" \
Chris@19:       | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
Chris@19:       >> "$depfile"
Chris@19:   else
Chris@19:     make_dummy_depfile
Chris@19:   fi
Chris@19:   rm -f "$tmpdepfile"
Chris@19:   ;;
Chris@19: 
Chris@19: xlc)
Chris@19:   # This case exists only to let depend.m4 do its work.  It works by
Chris@19:   # looking at the text of this script.  This case will never be run,
Chris@19:   # since it is checked for above.
Chris@19:   exit 1
Chris@19:   ;;
Chris@19: 
Chris@19: aix)
Chris@19:   # The C for AIX Compiler uses -M and outputs the dependencies
Chris@19:   # in a .u file.  In older versions, this file always lives in the
Chris@19:   # current directory.  Also, the AIX compiler puts '$object:' at the
Chris@19:   # start of each line; $object doesn't have directory information.
Chris@19:   # Version 6 uses the directory in both cases.
Chris@19:   set_dir_from "$object"
Chris@19:   set_base_from "$object"
Chris@19:   if test "$libtool" = yes; then
Chris@19:     tmpdepfile1=$dir$base.u
Chris@19:     tmpdepfile2=$base.u
Chris@19:     tmpdepfile3=$dir.libs/$base.u
Chris@19:     "$@" -Wc,-M
Chris@19:   else
Chris@19:     tmpdepfile1=$dir$base.u
Chris@19:     tmpdepfile2=$dir$base.u
Chris@19:     tmpdepfile3=$dir$base.u
Chris@19:     "$@" -M
Chris@19:   fi
Chris@19:   stat=$?
Chris@19:   if test $stat -ne 0; then
Chris@19:     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
Chris@19:     exit $stat
Chris@19:   fi
Chris@19: 
Chris@19:   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
Chris@19:   do
Chris@19:     test -f "$tmpdepfile" && break
Chris@19:   done
Chris@19:   aix_post_process_depfile
Chris@19:   ;;
Chris@19: 
Chris@19: tcc)
Chris@19:   # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
Chris@19:   # FIXME: That version still under development at the moment of writing.
Chris@19:   #        Make that this statement remains true also for stable, released
Chris@19:   #        versions.
Chris@19:   # It will wrap lines (doesn't matter whether long or short) with a
Chris@19:   # trailing '\', as in:
Chris@19:   #
Chris@19:   #   foo.o : \
Chris@19:   #    foo.c \
Chris@19:   #    foo.h \
Chris@19:   #
Chris@19:   # It will put a trailing '\' even on the last line, and will use leading
Chris@19:   # spaces rather than leading tabs (at least since its commit 0394caf7
Chris@19:   # "Emit spaces for -MD").
Chris@19:   "$@" -MD -MF "$tmpdepfile"
Chris@19:   stat=$?
Chris@19:   if test $stat -ne 0; then
Chris@19:     rm -f "$tmpdepfile"
Chris@19:     exit $stat
Chris@19:   fi
Chris@19:   rm -f "$depfile"
Chris@19:   # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
Chris@19:   # We have to change lines of the first kind to '$object: \'.
Chris@19:   sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
Chris@19:   # And for each line of the second kind, we have to emit a 'dep.h:'
Chris@19:   # dummy dependency, to avoid the deleted-header problem.
Chris@19:   sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
Chris@19:   rm -f "$tmpdepfile"
Chris@19:   ;;
Chris@19: 
Chris@19: ## The order of this option in the case statement is important, since the
Chris@19: ## shell code in configure will try each of these formats in the order
Chris@19: ## listed in this file.  A plain '-MD' option would be understood by many
Chris@19: ## compilers, so we must ensure this comes after the gcc and icc options.
Chris@19: pgcc)
Chris@19:   # Portland's C compiler understands '-MD'.
Chris@19:   # Will always output deps to 'file.d' where file is the root name of the
Chris@19:   # source file under compilation, even if file resides in a subdirectory.
Chris@19:   # The object file name does not affect the name of the '.d' file.
Chris@19:   # pgcc 10.2 will output
Chris@19:   #    foo.o: sub/foo.c sub/foo.h
Chris@19:   # and will wrap long lines using '\' :
Chris@19:   #    foo.o: sub/foo.c ... \
Chris@19:   #     sub/foo.h ... \
Chris@19:   #     ...
Chris@19:   set_dir_from "$object"
Chris@19:   # Use the source, not the object, to determine the base name, since
Chris@19:   # that's sadly what pgcc will do too.
Chris@19:   set_base_from "$source"
Chris@19:   tmpdepfile=$base.d
Chris@19: 
Chris@19:   # For projects that build the same source file twice into different object
Chris@19:   # files, the pgcc approach of using the *source* file root name can cause
Chris@19:   # problems in parallel builds.  Use a locking strategy to avoid stomping on
Chris@19:   # the same $tmpdepfile.
Chris@19:   lockdir=$base.d-lock
Chris@19:   trap "
Chris@19:     echo '$0: caught signal, cleaning up...' >&2
Chris@19:     rmdir '$lockdir'
Chris@19:     exit 1
Chris@19:   " 1 2 13 15
Chris@19:   numtries=100
Chris@19:   i=$numtries
Chris@19:   while test $i -gt 0; do
Chris@19:     # mkdir is a portable test-and-set.
Chris@19:     if mkdir "$lockdir" 2>/dev/null; then
Chris@19:       # This process acquired the lock.
Chris@19:       "$@" -MD
Chris@19:       stat=$?
Chris@19:       # Release the lock.
Chris@19:       rmdir "$lockdir"
Chris@19:       break
Chris@19:     else
Chris@19:       # If the lock is being held by a different process, wait
Chris@19:       # until the winning process is done or we timeout.
Chris@19:       while test -d "$lockdir" && test $i -gt 0; do
Chris@19:         sleep 1
Chris@19:         i=`expr $i - 1`
Chris@19:       done
Chris@19:     fi
Chris@19:     i=`expr $i - 1`
Chris@19:   done
Chris@19:   trap - 1 2 13 15
Chris@19:   if test $i -le 0; then
Chris@19:     echo "$0: failed to acquire lock after $numtries attempts" >&2
Chris@19:     echo "$0: check lockdir '$lockdir'" >&2
Chris@19:     exit 1
Chris@19:   fi
Chris@19: 
Chris@19:   if test $stat -ne 0; then
Chris@19:     rm -f "$tmpdepfile"
Chris@19:     exit $stat
Chris@19:   fi
Chris@19:   rm -f "$depfile"
Chris@19:   # Each line is of the form `foo.o: dependent.h',
Chris@19:   # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
Chris@19:   # Do two passes, one to just change these to
Chris@19:   # `$object: dependent.h' and one to simply `dependent.h:'.
Chris@19:   sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
Chris@19:   # Some versions of the HPUX 10.20 sed can't process this invocation
Chris@19:   # correctly.  Breaking it into two sed invocations is a workaround.
Chris@19:   sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
Chris@19:     | sed -e 's/$/ :/' >> "$depfile"
Chris@19:   rm -f "$tmpdepfile"
Chris@19:   ;;
Chris@19: 
Chris@19: hp2)
Chris@19:   # The "hp" stanza above does not work with aCC (C++) and HP's ia64
Chris@19:   # compilers, which have integrated preprocessors.  The correct option
Chris@19:   # to use with these is +Maked; it writes dependencies to a file named
Chris@19:   # 'foo.d', which lands next to the object file, wherever that
Chris@19:   # happens to be.
Chris@19:   # Much of this is similar to the tru64 case; see comments there.
Chris@19:   set_dir_from  "$object"
Chris@19:   set_base_from "$object"
Chris@19:   if test "$libtool" = yes; then
Chris@19:     tmpdepfile1=$dir$base.d
Chris@19:     tmpdepfile2=$dir.libs/$base.d
Chris@19:     "$@" -Wc,+Maked
Chris@19:   else
Chris@19:     tmpdepfile1=$dir$base.d
Chris@19:     tmpdepfile2=$dir$base.d
Chris@19:     "$@" +Maked
Chris@19:   fi
Chris@19:   stat=$?
Chris@19:   if test $stat -ne 0; then
Chris@19:      rm -f "$tmpdepfile1" "$tmpdepfile2"
Chris@19:      exit $stat
Chris@19:   fi
Chris@19: 
Chris@19:   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
Chris@19:   do
Chris@19:     test -f "$tmpdepfile" && break
Chris@19:   done
Chris@19:   if test -f "$tmpdepfile"; then
Chris@19:     sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
Chris@19:     # Add 'dependent.h:' lines.
Chris@19:     sed -ne '2,${
Chris@19:                s/^ *//
Chris@19:                s/ \\*$//
Chris@19:                s/$/:/
Chris@19:                p
Chris@19:              }' "$tmpdepfile" >> "$depfile"
Chris@19:   else
Chris@19:     make_dummy_depfile
Chris@19:   fi
Chris@19:   rm -f "$tmpdepfile" "$tmpdepfile2"
Chris@19:   ;;
Chris@19: 
Chris@19: tru64)
Chris@19:   # The Tru64 compiler uses -MD to generate dependencies as a side
Chris@19:   # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
Chris@19:   # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
Chris@19:   # dependencies in 'foo.d' instead, so we check for that too.
Chris@19:   # Subdirectories are respected.
Chris@19:   set_dir_from  "$object"
Chris@19:   set_base_from "$object"
Chris@19: 
Chris@19:   if test "$libtool" = yes; then
Chris@19:     # Libtool generates 2 separate objects for the 2 libraries.  These
Chris@19:     # two compilations output dependencies in $dir.libs/$base.o.d and
Chris@19:     # in $dir$base.o.d.  We have to check for both files, because
Chris@19:     # one of the two compilations can be disabled.  We should prefer
Chris@19:     # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
Chris@19:     # automatically cleaned when .libs/ is deleted, while ignoring
Chris@19:     # the former would cause a distcleancheck panic.
Chris@19:     tmpdepfile1=$dir$base.o.d          # libtool 1.5
Chris@19:     tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
Chris@19:     tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
Chris@19:     "$@" -Wc,-MD
Chris@19:   else
Chris@19:     tmpdepfile1=$dir$base.d
Chris@19:     tmpdepfile2=$dir$base.d
Chris@19:     tmpdepfile3=$dir$base.d
Chris@19:     "$@" -MD
Chris@19:   fi
Chris@19: 
Chris@19:   stat=$?
Chris@19:   if test $stat -ne 0; then
Chris@19:     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
Chris@19:     exit $stat
Chris@19:   fi
Chris@19: 
Chris@19:   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
Chris@19:   do
Chris@19:     test -f "$tmpdepfile" && break
Chris@19:   done
Chris@19:   # Same post-processing that is required for AIX mode.
Chris@19:   aix_post_process_depfile
Chris@19:   ;;
Chris@19: 
Chris@19: msvc7)
Chris@19:   if test "$libtool" = yes; then
Chris@19:     showIncludes=-Wc,-showIncludes
Chris@19:   else
Chris@19:     showIncludes=-showIncludes
Chris@19:   fi
Chris@19:   "$@" $showIncludes > "$tmpdepfile"
Chris@19:   stat=$?
Chris@19:   grep -v '^Note: including file: ' "$tmpdepfile"
Chris@19:   if test $stat -ne 0; then
Chris@19:     rm -f "$tmpdepfile"
Chris@19:     exit $stat
Chris@19:   fi
Chris@19:   rm -f "$depfile"
Chris@19:   echo "$object : \\" > "$depfile"
Chris@19:   # The first sed program below extracts the file names and escapes
Chris@19:   # backslashes for cygpath.  The second sed program outputs the file
Chris@19:   # name when reading, but also accumulates all include files in the
Chris@19:   # hold buffer in order to output them again at the end.  This only
Chris@19:   # works with sed implementations that can handle large buffers.
Chris@19:   sed < "$tmpdepfile" -n '
Chris@19: /^Note: including file:  *\(.*\)/ {
Chris@19:   s//\1/
Chris@19:   s/\\/\\\\/g
Chris@19:   p
Chris@19: }' | $cygpath_u | sort -u | sed -n '
Chris@19: s/ /\\ /g
Chris@19: s/\(.*\)/'"$tab"'\1 \\/p
Chris@19: s/.\(.*\) \\/\1:/
Chris@19: H
Chris@19: $ {
Chris@19:   s/.*/'"$tab"'/
Chris@19:   G
Chris@19:   p
Chris@19: }' >> "$depfile"
Chris@19:   echo >> "$depfile" # make sure the fragment doesn't end with a backslash
Chris@19:   rm -f "$tmpdepfile"
Chris@19:   ;;
Chris@19: 
Chris@19: msvc7msys)
Chris@19:   # This case exists only to let depend.m4 do its work.  It works by
Chris@19:   # looking at the text of this script.  This case will never be run,
Chris@19:   # since it is checked for above.
Chris@19:   exit 1
Chris@19:   ;;
Chris@19: 
Chris@19: #nosideeffect)
Chris@19:   # This comment above is used by automake to tell side-effect
Chris@19:   # dependency tracking mechanisms from slower ones.
Chris@19: 
Chris@19: dashmstdout)
Chris@19:   # Important note: in order to support this mode, a compiler *must*
Chris@19:   # always write the preprocessed file to stdout, regardless of -o.
Chris@19:   "$@" || exit $?
Chris@19: 
Chris@19:   # Remove the call to Libtool.
Chris@19:   if test "$libtool" = yes; then
Chris@19:     while test "X$1" != 'X--mode=compile'; do
Chris@19:       shift
Chris@19:     done
Chris@19:     shift
Chris@19:   fi
Chris@19: 
Chris@19:   # Remove '-o $object'.
Chris@19:   IFS=" "
Chris@19:   for arg
Chris@19:   do
Chris@19:     case $arg in
Chris@19:     -o)
Chris@19:       shift
Chris@19:       ;;
Chris@19:     $object)
Chris@19:       shift
Chris@19:       ;;
Chris@19:     *)
Chris@19:       set fnord "$@" "$arg"
Chris@19:       shift # fnord
Chris@19:       shift # $arg
Chris@19:       ;;
Chris@19:     esac
Chris@19:   done
Chris@19: 
Chris@19:   test -z "$dashmflag" && dashmflag=-M
Chris@19:   # Require at least two characters before searching for ':'
Chris@19:   # in the target name.  This is to cope with DOS-style filenames:
Chris@19:   # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
Chris@19:   "$@" $dashmflag |
Chris@19:     sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
Chris@19:   rm -f "$depfile"
Chris@19:   cat < "$tmpdepfile" > "$depfile"
Chris@19:   # Some versions of the HPUX 10.20 sed can't process this sed invocation
Chris@19:   # correctly.  Breaking it into two sed invocations is a workaround.
Chris@19:   tr ' ' "$nl" < "$tmpdepfile" \
Chris@19:     | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
Chris@19:     | sed -e 's/$/ :/' >> "$depfile"
Chris@19:   rm -f "$tmpdepfile"
Chris@19:   ;;
Chris@19: 
Chris@19: dashXmstdout)
Chris@19:   # This case only exists to satisfy depend.m4.  It is never actually
Chris@19:   # run, as this mode is specially recognized in the preamble.
Chris@19:   exit 1
Chris@19:   ;;
Chris@19: 
Chris@19: makedepend)
Chris@19:   "$@" || exit $?
Chris@19:   # Remove any Libtool call
Chris@19:   if test "$libtool" = yes; then
Chris@19:     while test "X$1" != 'X--mode=compile'; do
Chris@19:       shift
Chris@19:     done
Chris@19:     shift
Chris@19:   fi
Chris@19:   # X makedepend
Chris@19:   shift
Chris@19:   cleared=no eat=no
Chris@19:   for arg
Chris@19:   do
Chris@19:     case $cleared in
Chris@19:     no)
Chris@19:       set ""; shift
Chris@19:       cleared=yes ;;
Chris@19:     esac
Chris@19:     if test $eat = yes; then
Chris@19:       eat=no
Chris@19:       continue
Chris@19:     fi
Chris@19:     case "$arg" in
Chris@19:     -D*|-I*)
Chris@19:       set fnord "$@" "$arg"; shift ;;
Chris@19:     # Strip any option that makedepend may not understand.  Remove
Chris@19:     # the object too, otherwise makedepend will parse it as a source file.
Chris@19:     -arch)
Chris@19:       eat=yes ;;
Chris@19:     -*|$object)
Chris@19:       ;;
Chris@19:     *)
Chris@19:       set fnord "$@" "$arg"; shift ;;
Chris@19:     esac
Chris@19:   done
Chris@19:   obj_suffix=`echo "$object" | sed 's/^.*\././'`
Chris@19:   touch "$tmpdepfile"
Chris@19:   ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
Chris@19:   rm -f "$depfile"
Chris@19:   # makedepend may prepend the VPATH from the source file name to the object.
Chris@19:   # No need to regex-escape $object, excess matching of '.' is harmless.
Chris@19:   sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
Chris@19:   # Some versions of the HPUX 10.20 sed can't process the last invocation
Chris@19:   # correctly.  Breaking it into two sed invocations is a workaround.
Chris@19:   sed '1,2d' "$tmpdepfile" \
Chris@19:     | tr ' ' "$nl" \
Chris@19:     | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
Chris@19:     | sed -e 's/$/ :/' >> "$depfile"
Chris@19:   rm -f "$tmpdepfile" "$tmpdepfile".bak
Chris@19:   ;;
Chris@19: 
Chris@19: cpp)
Chris@19:   # Important note: in order to support this mode, a compiler *must*
Chris@19:   # always write the preprocessed file to stdout.
Chris@19:   "$@" || exit $?
Chris@19: 
Chris@19:   # Remove the call to Libtool.
Chris@19:   if test "$libtool" = yes; then
Chris@19:     while test "X$1" != 'X--mode=compile'; do
Chris@19:       shift
Chris@19:     done
Chris@19:     shift
Chris@19:   fi
Chris@19: 
Chris@19:   # Remove '-o $object'.
Chris@19:   IFS=" "
Chris@19:   for arg
Chris@19:   do
Chris@19:     case $arg in
Chris@19:     -o)
Chris@19:       shift
Chris@19:       ;;
Chris@19:     $object)
Chris@19:       shift
Chris@19:       ;;
Chris@19:     *)
Chris@19:       set fnord "$@" "$arg"
Chris@19:       shift # fnord
Chris@19:       shift # $arg
Chris@19:       ;;
Chris@19:     esac
Chris@19:   done
Chris@19: 
Chris@19:   "$@" -E \
Chris@19:     | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
Chris@19:              -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
Chris@19:     | sed '$ s: \\$::' > "$tmpdepfile"
Chris@19:   rm -f "$depfile"
Chris@19:   echo "$object : \\" > "$depfile"
Chris@19:   cat < "$tmpdepfile" >> "$depfile"
Chris@19:   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
Chris@19:   rm -f "$tmpdepfile"
Chris@19:   ;;
Chris@19: 
Chris@19: msvisualcpp)
Chris@19:   # Important note: in order to support this mode, a compiler *must*
Chris@19:   # always write the preprocessed file to stdout.
Chris@19:   "$@" || exit $?
Chris@19: 
Chris@19:   # Remove the call to Libtool.
Chris@19:   if test "$libtool" = yes; then
Chris@19:     while test "X$1" != 'X--mode=compile'; do
Chris@19:       shift
Chris@19:     done
Chris@19:     shift
Chris@19:   fi
Chris@19: 
Chris@19:   IFS=" "
Chris@19:   for arg
Chris@19:   do
Chris@19:     case "$arg" in
Chris@19:     -o)
Chris@19:       shift
Chris@19:       ;;
Chris@19:     $object)
Chris@19:       shift
Chris@19:       ;;
Chris@19:     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
Chris@19:         set fnord "$@"
Chris@19:         shift
Chris@19:         shift
Chris@19:         ;;
Chris@19:     *)
Chris@19:         set fnord "$@" "$arg"
Chris@19:         shift
Chris@19:         shift
Chris@19:         ;;
Chris@19:     esac
Chris@19:   done
Chris@19:   "$@" -E 2>/dev/null |
Chris@19:   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
Chris@19:   rm -f "$depfile"
Chris@19:   echo "$object : \\" > "$depfile"
Chris@19:   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
Chris@19:   echo "$tab" >> "$depfile"
Chris@19:   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
Chris@19:   rm -f "$tmpdepfile"
Chris@19:   ;;
Chris@19: 
Chris@19: msvcmsys)
Chris@19:   # This case exists only to let depend.m4 do its work.  It works by
Chris@19:   # looking at the text of this script.  This case will never be run,
Chris@19:   # since it is checked for above.
Chris@19:   exit 1
Chris@19:   ;;
Chris@19: 
Chris@19: none)
Chris@19:   exec "$@"
Chris@19:   ;;
Chris@19: 
Chris@19: *)
Chris@19:   echo "Unknown depmode $depmode" 1>&2
Chris@19:   exit 1
Chris@19:   ;;
Chris@19: esac
Chris@19: 
Chris@19: exit 0
Chris@19: 
Chris@19: # Local Variables:
Chris@19: # mode: shell-script
Chris@19: # sh-indentation: 2
Chris@19: # eval: (add-hook 'write-file-hooks 'time-stamp)
Chris@19: # time-stamp-start: "scriptversion="
Chris@19: # time-stamp-format: "%:y-%02m-%02d.%02H"
Chris@19: # time-stamp-time-zone: "UTC"
Chris@19: # time-stamp-end: "; # UTC"
Chris@19: # End: