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  1. #! /bin/sh
  2. # depcomp - compile a program generating dependencies as side-effects
  3.  
  4. scriptversion=2013-05-30.07; # UTC
  5.  
  6. # Copyright (C) 1999-2013 Free Software Foundation, Inc.
  7.  
  8. # This program is free software; you can redistribute it and/or modify
  9. # it under the terms of the GNU General Public License as published by
  10. # the Free Software Foundation; either version 2, or (at your option)
  11. # any later version.
  12.  
  13. # This program is distributed in the hope that it will be useful,
  14. # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16. # GNU General Public License for more details.
  17.  
  18. # You should have received a copy of the GNU General Public License
  19. # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20.  
  21. # As a special exception to the GNU General Public License, if you
  22. # distribute this file as part of a program that contains a
  23. # configuration script generated by Autoconf, you may include it under
  24. # the same distribution terms that you use for the rest of that program.
  25.  
  26. # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
  27.  
  28. case $1 in
  29.   '')
  30.     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
  31.     exit 1;
  32.     ;;
  33.   -h | --h*)
  34.     cat <<\EOF
  35. Usage: depcomp [--help] [--version] PROGRAM [ARGS]
  36.  
  37. Run PROGRAMS ARGS to compile a file, generating dependencies
  38. as side-effects.
  39.  
  40. Environment variables:
  41.   depmode     Dependency tracking mode.
  42.   source      Source file read by 'PROGRAMS ARGS'.
  43.   object      Object file output by 'PROGRAMS ARGS'.
  44.   DEPDIR      directory where to store dependencies.
  45.   depfile     Dependency file to output.
  46.   tmpdepfile  Temporary file to use when outputting dependencies.
  47.   libtool     Whether libtool is used (yes/no).
  48.  
  49. Report bugs to <bug-automake@gnu.org>.
  50. EOF
  51.     exit $?
  52.     ;;
  53.   -v | --v*)
  54.     echo "depcomp $scriptversion"
  55.     exit $?
  56.     ;;
  57. esac
  58.  
  59. # Get the directory component of the given path, and save it in the
  60. # global variables '$dir'.  Note that this directory component will
  61. # be either empty or ending with a '/' character.  This is deliberate.
  62. set_dir_from ()
  63. {
  64.   case $1 in
  65.     */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
  66.       *) dir=;;
  67.   esac
  68. }
  69.  
  70. # Get the suffix-stripped basename of the given path, and save it the
  71. # global variable '$base'.
  72. set_base_from ()
  73. {
  74.   base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
  75. }
  76.  
  77. # If no dependency file was actually created by the compiler invocation,
  78. # we still have to create a dummy depfile, to avoid errors with the
  79. # Makefile "include basename.Plo" scheme.
  80. make_dummy_depfile ()
  81. {
  82.   echo "#dummy" > "$depfile"
  83. }
  84.  
  85. # Factor out some common post-processing of the generated depfile.
  86. # Requires the auxiliary global variable '$tmpdepfile' to be set.
  87. aix_post_process_depfile ()
  88. {
  89.   # If the compiler actually managed to produce a dependency file,
  90.   # post-process it.
  91.   if test -f "$tmpdepfile"; then
  92.     # Each line is of the form 'foo.o: dependency.h'.
  93.     # Do two passes, one to just change these to
  94.     #   $object: dependency.h
  95.     # and one to simply output
  96.     #   dependency.h:
  97.     # which is needed to avoid the deleted-header problem.
  98.     { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
  99.       sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
  100.     } > "$depfile"
  101.     rm -f "$tmpdepfile"
  102.   else
  103.     make_dummy_depfile
  104.   fi
  105. }
  106.  
  107. # A tabulation character.
  108. tab='   '
  109. # A newline character.
  110. nl='
  111. '
  112. # Character ranges might be problematic outside the C locale.
  113. # These definitions help.
  114. upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
  115. lower=abcdefghijklmnopqrstuvwxyz
  116. digits=0123456789
  117. alpha=${upper}${lower}
  118.  
  119. if test -z "$depmode" || test -z "$source" || test -z "$object"; then
  120.   echo "depcomp: Variables source, object and depmode must be set" 1>&2
  121.   exit 1
  122. fi
  123.  
  124. # Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
  125. depfile=${depfile-`echo "$object" |
  126.   sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
  127. tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
  128.  
  129. rm -f "$tmpdepfile"
  130.  
  131. # Avoid interferences from the environment.
  132. gccflag= dashmflag=
  133.  
  134. # Some modes work just like other modes, but use different flags.  We
  135. # parameterize here, but still list the modes in the big case below,
  136. # to make depend.m4 easier to write.  Note that we *cannot* use a case
  137. # here, because this file can only contain one case statement.
  138. if test "$depmode" = hp; then
  139.   # HP compiler uses -M and no extra arg.
  140.   gccflag=-M
  141.   depmode=gcc
  142. fi
  143.  
  144. if test "$depmode" = dashXmstdout; then
  145.   # This is just like dashmstdout with a different argument.
  146.   dashmflag=-xM
  147.   depmode=dashmstdout
  148. fi
  149.  
  150. cygpath_u="cygpath -u -f -"
  151. if test "$depmode" = msvcmsys; then
  152.   # This is just like msvisualcpp but w/o cygpath translation.
  153.   # Just convert the backslash-escaped backslashes to single forward
  154.   # slashes to satisfy depend.m4
  155.   cygpath_u='sed s,\\\\,/,g'
  156.   depmode=msvisualcpp
  157. fi
  158.  
  159. if test "$depmode" = msvc7msys; then
  160.   # This is just like msvc7 but w/o cygpath translation.
  161.   # Just convert the backslash-escaped backslashes to single forward
  162.   # slashes to satisfy depend.m4
  163.   cygpath_u='sed s,\\\\,/,g'
  164.   depmode=msvc7
  165. fi
  166.  
  167. if test "$depmode" = xlc; then
  168.   # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
  169.   gccflag=-qmakedep=gcc,-MF
  170.   depmode=gcc
  171. fi
  172.  
  173. case "$depmode" in
  174. gcc3)
  175. ## gcc 3 implements dependency tracking that does exactly what
  176. ## we want.  Yay!  Note: for some reason libtool 1.4 doesn't like
  177. ## it if -MD -MP comes after the -MF stuff.  Hmm.
  178. ## Unfortunately, FreeBSD c89 acceptance of flags depends upon
  179. ## the command line argument order; so add the flags where they
  180. ## appear in depend2.am.  Note that the slowdown incurred here
  181. ## affects only configure: in makefiles, %FASTDEP% shortcuts this.
  182.   for arg
  183.   do
  184.     case $arg in
  185.     -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
  186.     *)  set fnord "$@" "$arg" ;;
  187.     esac
  188.     shift # fnord
  189.     shift # $arg
  190.   done
  191.   "$@"
  192.   stat=$?
  193.   if test $stat -ne 0; then
  194.     rm -f "$tmpdepfile"
  195.     exit $stat
  196.   fi
  197.   mv "$tmpdepfile" "$depfile"
  198.   ;;
  199.  
  200. gcc)
  201. ## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
  202. ## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
  203. ## (see the conditional assignment to $gccflag above).
  204. ## There are various ways to get dependency output from gcc.  Here's
  205. ## why we pick this rather obscure method:
  206. ## - Don't want to use -MD because we'd like the dependencies to end
  207. ##   up in a subdir.  Having to rename by hand is ugly.
  208. ##   (We might end up doing this anyway to support other compilers.)
  209. ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
  210. ##   -MM, not -M (despite what the docs say).  Also, it might not be
  211. ##   supported by the other compilers which use the 'gcc' depmode.
  212. ## - Using -M directly means running the compiler twice (even worse
  213. ##   than renaming).
  214.   if test -z "$gccflag"; then
  215.     gccflag=-MD,
  216.   fi
  217.   "$@" -Wp,"$gccflag$tmpdepfile"
  218.   stat=$?
  219.   if test $stat -ne 0; then
  220.     rm -f "$tmpdepfile"
  221.     exit $stat
  222.   fi
  223.   rm -f "$depfile"
  224.   echo "$object : \\" > "$depfile"
  225.   # The second -e expression handles DOS-style file names with drive
  226.   # letters.
  227.   sed -e 's/^[^:]*: / /' \
  228.       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
  229. ## This next piece of magic avoids the "deleted header file" problem.
  230. ## The problem is that when a header file which appears in a .P file
  231. ## is deleted, the dependency causes make to die (because there is
  232. ## typically no way to rebuild the header).  We avoid this by adding
  233. ## dummy dependencies for each header file.  Too bad gcc doesn't do
  234. ## this for us directly.
  235. ## Some versions of gcc put a space before the ':'.  On the theory
  236. ## that the space means something, we add a space to the output as
  237. ## well.  hp depmode also adds that space, but also prefixes the VPATH
  238. ## to the object.  Take care to not repeat it in the output.
  239. ## Some versions of the HPUX 10.20 sed can't process this invocation
  240. ## correctly.  Breaking it into two sed invocations is a workaround.
  241.   tr ' ' "$nl" < "$tmpdepfile" \
  242.     | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
  243.     | sed -e 's/$/ :/' >> "$depfile"
  244.   rm -f "$tmpdepfile"
  245.   ;;
  246.  
  247. hp)
  248.   # This case exists only to let depend.m4 do its work.  It works by
  249.   # looking at the text of this script.  This case will never be run,
  250.   # since it is checked for above.
  251.   exit 1
  252.   ;;
  253.  
  254. sgi)
  255.   if test "$libtool" = yes; then
  256.     "$@" "-Wp,-MDupdate,$tmpdepfile"
  257.   else
  258.     "$@" -MDupdate "$tmpdepfile"
  259.   fi
  260.   stat=$?
  261.   if test $stat -ne 0; then
  262.     rm -f "$tmpdepfile"
  263.     exit $stat
  264.   fi
  265.   rm -f "$depfile"
  266.  
  267.   if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
  268.     echo "$object : \\" > "$depfile"
  269.     # Clip off the initial element (the dependent).  Don't try to be
  270.     # clever and replace this with sed code, as IRIX sed won't handle
  271.     # lines with more than a fixed number of characters (4096 in
  272.     # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
  273.     # the IRIX cc adds comments like '#:fec' to the end of the
  274.     # dependency line.
  275.     tr ' ' "$nl" < "$tmpdepfile" \
  276.       | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
  277.       | tr "$nl" ' ' >> "$depfile"
  278.     echo >> "$depfile"
  279.     # The second pass generates a dummy entry for each header file.
  280.     tr ' ' "$nl" < "$tmpdepfile" \
  281.       | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
  282.       >> "$depfile"
  283.   else
  284.     make_dummy_depfile
  285.   fi
  286.   rm -f "$tmpdepfile"
  287.   ;;
  288.  
  289. xlc)
  290.   # This case exists only to let depend.m4 do its work.  It works by
  291.   # looking at the text of this script.  This case will never be run,
  292.   # since it is checked for above.
  293.   exit 1
  294.   ;;
  295.  
  296. aix)
  297.   # The C for AIX Compiler uses -M and outputs the dependencies
  298.   # in a .u file.  In older versions, this file always lives in the
  299.   # current directory.  Also, the AIX compiler puts '$object:' at the
  300.   # start of each line; $object doesn't have directory information.
  301.   # Version 6 uses the directory in both cases.
  302.   set_dir_from "$object"
  303.   set_base_from "$object"
  304.   if test "$libtool" = yes; then
  305.     tmpdepfile1=$dir$base.u
  306.     tmpdepfile2=$base.u
  307.     tmpdepfile3=$dir.libs/$base.u
  308.     "$@" -Wc,-M
  309.   else
  310.     tmpdepfile1=$dir$base.u
  311.     tmpdepfile2=$dir$base.u
  312.     tmpdepfile3=$dir$base.u
  313.     "$@" -M
  314.   fi
  315.   stat=$?
  316.   if test $stat -ne 0; then
  317.     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
  318.     exit $stat
  319.   fi
  320.  
  321.   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
  322.   do
  323.     test -f "$tmpdepfile" && break
  324.   done
  325.   aix_post_process_depfile
  326.   ;;
  327.  
  328. tcc)
  329.   # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
  330.   # FIXME: That version still under development at the moment of writing.
  331.   #        Make that this statement remains true also for stable, released
  332.   #        versions.
  333.   # It will wrap lines (doesn't matter whether long or short) with a
  334.   # trailing '\', as in:
  335.   #
  336.   #   foo.o : \
  337.   #    foo.c \
  338.   #    foo.h \
  339.   #
  340.   # It will put a trailing '\' even on the last line, and will use leading
  341.   # spaces rather than leading tabs (at least since its commit 0394caf7
  342.   # "Emit spaces for -MD").
  343.   "$@" -MD -MF "$tmpdepfile"
  344.   stat=$?
  345.   if test $stat -ne 0; then
  346.     rm -f "$tmpdepfile"
  347.     exit $stat
  348.   fi
  349.   rm -f "$depfile"
  350.   # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
  351.   # We have to change lines of the first kind to '$object: \'.
  352.   sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
  353.   # And for each line of the second kind, we have to emit a 'dep.h:'
  354.   # dummy dependency, to avoid the deleted-header problem.
  355.   sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
  356.   rm -f "$tmpdepfile"
  357.   ;;
  358.  
  359. ## The order of this option in the case statement is important, since the
  360. ## shell code in configure will try each of these formats in the order
  361. ## listed in this file.  A plain '-MD' option would be understood by many
  362. ## compilers, so we must ensure this comes after the gcc and icc options.
  363. pgcc)
  364.   # Portland's C compiler understands '-MD'.
  365.   # Will always output deps to 'file.d' where file is the root name of the
  366.   # source file under compilation, even if file resides in a subdirectory.
  367.   # The object file name does not affect the name of the '.d' file.
  368.   # pgcc 10.2 will output
  369.   #    foo.o: sub/foo.c sub/foo.h
  370.   # and will wrap long lines using '\' :
  371.   #    foo.o: sub/foo.c ... \
  372.   #     sub/foo.h ... \
  373.   #     ...
  374.   set_dir_from "$object"
  375.   # Use the source, not the object, to determine the base name, since
  376.   # that's sadly what pgcc will do too.
  377.   set_base_from "$source"
  378.   tmpdepfile=$base.d
  379.  
  380.   # For projects that build the same source file twice into different object
  381.   # files, the pgcc approach of using the *source* file root name can cause
  382.   # problems in parallel builds.  Use a locking strategy to avoid stomping on
  383.   # the same $tmpdepfile.
  384.   lockdir=$base.d-lock
  385.   trap "
  386.     echo '$0: caught signal, cleaning up...' >&2
  387.     rmdir '$lockdir'
  388.     exit 1
  389.   " 1 2 13 15
  390.   numtries=100
  391.   i=$numtries
  392.   while test $i -gt 0; do
  393.     # mkdir is a portable test-and-set.
  394.     if mkdir "$lockdir" 2>/dev/null; then
  395.       # This process acquired the lock.
  396.       "$@" -MD
  397.       stat=$?
  398.       # Release the lock.
  399.       rmdir "$lockdir"
  400.       break
  401.     else
  402.       # If the lock is being held by a different process, wait
  403.       # until the winning process is done or we timeout.
  404.       while test -d "$lockdir" && test $i -gt 0; do
  405.         sleep 1
  406.         i=`expr $i - 1`
  407.       done
  408.     fi
  409.     i=`expr $i - 1`
  410.   done
  411.   trap - 1 2 13 15
  412.   if test $i -le 0; then
  413.     echo "$0: failed to acquire lock after $numtries attempts" >&2
  414.     echo "$0: check lockdir '$lockdir'" >&2
  415.     exit 1
  416.   fi
  417.  
  418.   if test $stat -ne 0; then
  419.     rm -f "$tmpdepfile"
  420.     exit $stat
  421.   fi
  422.   rm -f "$depfile"
  423.   # Each line is of the form `foo.o: dependent.h',
  424.   # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
  425.   # Do two passes, one to just change these to
  426.   # `$object: dependent.h' and one to simply `dependent.h:'.
  427.   sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
  428.   # Some versions of the HPUX 10.20 sed can't process this invocation
  429.   # correctly.  Breaking it into two sed invocations is a workaround.
  430.   sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
  431.     | sed -e 's/$/ :/' >> "$depfile"
  432.   rm -f "$tmpdepfile"
  433.   ;;
  434.  
  435. hp2)
  436.   # The "hp" stanza above does not work with aCC (C++) and HP's ia64
  437.   # compilers, which have integrated preprocessors.  The correct option
  438.   # to use with these is +Maked; it writes dependencies to a file named
  439.   # 'foo.d', which lands next to the object file, wherever that
  440.   # happens to be.
  441.   # Much of this is similar to the tru64 case; see comments there.
  442.   set_dir_from  "$object"
  443.   set_base_from "$object"
  444.   if test "$libtool" = yes; then
  445.     tmpdepfile1=$dir$base.d
  446.     tmpdepfile2=$dir.libs/$base.d
  447.     "$@" -Wc,+Maked
  448.   else
  449.     tmpdepfile1=$dir$base.d
  450.     tmpdepfile2=$dir$base.d
  451.     "$@" +Maked
  452.   fi
  453.   stat=$?
  454.   if test $stat -ne 0; then
  455.      rm -f "$tmpdepfile1" "$tmpdepfile2"
  456.      exit $stat
  457.   fi
  458.  
  459.   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
  460.   do
  461.     test -f "$tmpdepfile" && break
  462.   done
  463.   if test -f "$tmpdepfile"; then
  464.     sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
  465.     # Add 'dependent.h:' lines.
  466.     sed -ne '2,${
  467.                s/^ *//
  468.                s/ \\*$//
  469.                s/$/:/
  470.                p
  471.              }' "$tmpdepfile" >> "$depfile"
  472.   else
  473.     make_dummy_depfile
  474.   fi
  475.   rm -f "$tmpdepfile" "$tmpdepfile2"
  476.   ;;
  477.  
  478. tru64)
  479.   # The Tru64 compiler uses -MD to generate dependencies as a side
  480.   # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
  481.   # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
  482.   # dependencies in 'foo.d' instead, so we check for that too.
  483.   # Subdirectories are respected.
  484.   set_dir_from  "$object"
  485.   set_base_from "$object"
  486.  
  487.   if test "$libtool" = yes; then
  488.     # Libtool generates 2 separate objects for the 2 libraries.  These
  489.     # two compilations output dependencies in $dir.libs/$base.o.d and
  490.     # in $dir$base.o.d.  We have to check for both files, because
  491.     # one of the two compilations can be disabled.  We should prefer
  492.     # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
  493.     # automatically cleaned when .libs/ is deleted, while ignoring
  494.     # the former would cause a distcleancheck panic.
  495.     tmpdepfile1=$dir$base.o.d          # libtool 1.5
  496.     tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
  497.     tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
  498.     "$@" -Wc,-MD
  499.   else
  500.     tmpdepfile1=$dir$base.d
  501.     tmpdepfile2=$dir$base.d
  502.     tmpdepfile3=$dir$base.d
  503.     "$@" -MD
  504.   fi
  505.  
  506.   stat=$?
  507.   if test $stat -ne 0; then
  508.     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
  509.     exit $stat
  510.   fi
  511.  
  512.   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
  513.   do
  514.     test -f "$tmpdepfile" && break
  515.   done
  516.   # Same post-processing that is required for AIX mode.
  517.   aix_post_process_depfile
  518.   ;;
  519.  
  520. msvc7)
  521.   if test "$libtool" = yes; then
  522.     showIncludes=-Wc,-showIncludes
  523.   else
  524.     showIncludes=-showIncludes
  525.   fi
  526.   "$@" $showIncludes > "$tmpdepfile"
  527.   stat=$?
  528.   grep -v '^Note: including file: ' "$tmpdepfile"
  529.   if test $stat -ne 0; then
  530.     rm -f "$tmpdepfile"
  531.     exit $stat
  532.   fi
  533.   rm -f "$depfile"
  534.   echo "$object : \\" > "$depfile"
  535.   # The first sed program below extracts the file names and escapes
  536.   # backslashes for cygpath.  The second sed program outputs the file
  537.   # name when reading, but also accumulates all include files in the
  538.   # hold buffer in order to output them again at the end.  This only
  539.   # works with sed implementations that can handle large buffers.
  540.   sed < "$tmpdepfile" -n '
  541. /^Note: including file:  *\(.*\)/ {
  542.   s//\1/
  543.   s/\\/\\\\/g
  544.   p
  545. }' | $cygpath_u | sort -u | sed -n '
  546. s/ /\\ /g
  547. s/\(.*\)/'"$tab"'\1 \\/p
  548. s/.\(.*\) \\/\1:/
  549. H
  550. $ {
  551.   s/.*/'"$tab"'/
  552.   G
  553.   p
  554. }' >> "$depfile"
  555.   echo >> "$depfile" # make sure the fragment doesn't end with a backslash
  556.   rm -f "$tmpdepfile"
  557.   ;;
  558.  
  559. msvc7msys)
  560.   # This case exists only to let depend.m4 do its work.  It works by
  561.   # looking at the text of this script.  This case will never be run,
  562.   # since it is checked for above.
  563.   exit 1
  564.   ;;
  565.  
  566. #nosideeffect)
  567.   # This comment above is used by automake to tell side-effect
  568.   # dependency tracking mechanisms from slower ones.
  569.  
  570. dashmstdout)
  571.   # Important note: in order to support this mode, a compiler *must*
  572.   # always write the preprocessed file to stdout, regardless of -o.
  573.   "$@" || exit $?
  574.  
  575.   # Remove the call to Libtool.
  576.   if test "$libtool" = yes; then
  577.     while test "X$1" != 'X--mode=compile'; do
  578.       shift
  579.     done
  580.     shift
  581.   fi
  582.  
  583.   # Remove '-o $object'.
  584.   IFS=" "
  585.   for arg
  586.   do
  587.     case $arg in
  588.     -o)
  589.       shift
  590.       ;;
  591.     $object)
  592.       shift
  593.       ;;
  594.     *)
  595.       set fnord "$@" "$arg"
  596.       shift # fnord
  597.       shift # $arg
  598.       ;;
  599.     esac
  600.   done
  601.  
  602.   test -z "$dashmflag" && dashmflag=-M
  603.   # Require at least two characters before searching for ':'
  604.   # in the target name.  This is to cope with DOS-style filenames:
  605.   # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
  606.   "$@" $dashmflag |
  607.     sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
  608.   rm -f "$depfile"
  609.   cat < "$tmpdepfile" > "$depfile"
  610.   # Some versions of the HPUX 10.20 sed can't process this sed invocation
  611.   # correctly.  Breaking it into two sed invocations is a workaround.
  612.   tr ' ' "$nl" < "$tmpdepfile" \
  613.     | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
  614.     | sed -e 's/$/ :/' >> "$depfile"
  615.   rm -f "$tmpdepfile"
  616.   ;;
  617.  
  618. dashXmstdout)
  619.   # This case only exists to satisfy depend.m4.  It is never actually
  620.   # run, as this mode is specially recognized in the preamble.
  621.   exit 1
  622.   ;;
  623.  
  624. makedepend)
  625.   "$@" || exit $?
  626.   # Remove any Libtool call
  627.   if test "$libtool" = yes; then
  628.     while test "X$1" != 'X--mode=compile'; do
  629.       shift
  630.     done
  631.     shift
  632.   fi
  633.   # X makedepend
  634.   shift
  635.   cleared=no eat=no
  636.   for arg
  637.   do
  638.     case $cleared in
  639.     no)
  640.       set ""; shift
  641.       cleared=yes ;;
  642.     esac
  643.     if test $eat = yes; then
  644.       eat=no
  645.       continue
  646.     fi
  647.     case "$arg" in
  648.     -D*|-I*)
  649.       set fnord "$@" "$arg"; shift ;;
  650.     # Strip any option that makedepend may not understand.  Remove
  651.     # the object too, otherwise makedepend will parse it as a source file.
  652.     -arch)
  653.       eat=yes ;;
  654.     -*|$object)
  655.       ;;
  656.     *)
  657.       set fnord "$@" "$arg"; shift ;;
  658.     esac
  659.   done
  660.   obj_suffix=`echo "$object" | sed 's/^.*\././'`
  661.   touch "$tmpdepfile"
  662.   ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
  663.   rm -f "$depfile"
  664.   # makedepend may prepend the VPATH from the source file name to the object.
  665.   # No need to regex-escape $object, excess matching of '.' is harmless.
  666.   sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
  667.   # Some versions of the HPUX 10.20 sed can't process the last invocation
  668.   # correctly.  Breaking it into two sed invocations is a workaround.
  669.   sed '1,2d' "$tmpdepfile" \
  670.     | tr ' ' "$nl" \
  671.     | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
  672.     | sed -e 's/$/ :/' >> "$depfile"
  673.   rm -f "$tmpdepfile" "$tmpdepfile".bak
  674.   ;;
  675.  
  676. cpp)
  677.   # Important note: in order to support this mode, a compiler *must*
  678.   # always write the preprocessed file to stdout.
  679.   "$@" || exit $?
  680.  
  681.   # Remove the call to Libtool.
  682.   if test "$libtool" = yes; then
  683.     while test "X$1" != 'X--mode=compile'; do
  684.       shift
  685.     done
  686.     shift
  687.   fi
  688.  
  689.   # Remove '-o $object'.
  690.   IFS=" "
  691.   for arg
  692.   do
  693.     case $arg in
  694.     -o)
  695.       shift
  696.       ;;
  697.     $object)
  698.       shift
  699.       ;;
  700.     *)
  701.       set fnord "$@" "$arg"
  702.       shift # fnord
  703.       shift # $arg
  704.       ;;
  705.     esac
  706.   done
  707.  
  708.   "$@" -E \
  709.     | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
  710.              -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
  711.     | sed '$ s: \\$::' > "$tmpdepfile"
  712.   rm -f "$depfile"
  713.   echo "$object : \\" > "$depfile"
  714.   cat < "$tmpdepfile" >> "$depfile"
  715.   sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
  716.   rm -f "$tmpdepfile"
  717.   ;;
  718.  
  719. msvisualcpp)
  720.   # Important note: in order to support this mode, a compiler *must*
  721.   # always write the preprocessed file to stdout.
  722.   "$@" || exit $?
  723.  
  724.   # Remove the call to Libtool.
  725.   if test "$libtool" = yes; then
  726.     while test "X$1" != 'X--mode=compile'; do
  727.       shift
  728.     done
  729.     shift
  730.   fi
  731.  
  732.   IFS=" "
  733.   for arg
  734.   do
  735.     case "$arg" in
  736.     -o)
  737.       shift
  738.       ;;
  739.     $object)
  740.       shift
  741.       ;;
  742.     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
  743.         set fnord "$@"
  744.         shift
  745.         shift
  746.         ;;
  747.     *)
  748.         set fnord "$@" "$arg"
  749.         shift
  750.         shift
  751.         ;;
  752.     esac
  753.   done
  754.   "$@" -E 2>/dev/null |
  755.   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
  756.   rm -f "$depfile"
  757.   echo "$object : \\" > "$depfile"
  758.   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
  759.   echo "$tab" >> "$depfile"
  760.   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
  761.   rm -f "$tmpdepfile"
  762.   ;;
  763.  
  764. msvcmsys)
  765.   # This case exists only to let depend.m4 do its work.  It works by
  766.   # looking at the text of this script.  This case will never be run,
  767.   # since it is checked for above.
  768.   exit 1
  769.   ;;
  770.  
  771. none)
  772.   exec "$@"
  773.   ;;
  774.  
  775. *)
  776.   echo "Unknown depmode $depmode" 1>&2
  777.   exit 1
  778.   ;;
  779. esac
  780.  
  781. exit 0
  782.  
  783. # Local Variables:
  784. # mode: shell-script
  785. # sh-indentation: 2
  786. # eval: (add-hook 'write-file-hooks 'time-stamp)
  787. # time-stamp-start: "scriptversion="
  788. # time-stamp-format: "%:y-%02m-%02d.%02H"
  789. # time-stamp-time-zone: "UTC"
  790. # time-stamp-end: "; # UTC"
  791. # End:
  792.