3 # depcomp - compile a program generating dependencies as side-effects
4 # Copyright (C) 1999 Free Software Foundation, Inc.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2, or (at your option)
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
21 # Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
23 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
24 echo "depcomp: Variables source, object and depmode must be set" 1>&2
28 depfile=${depfile-`echo "$object" | sed 's,\([^/]*\)$,.deps/\1,;s/\.\([^.]*\)$/.P\1/'`}
29 tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
33 # Some modes work just like other modes, but use different flags. We
34 # parameterize here, but still list the modes in the big case below,
35 # to make depend.m4 easier to write. Note that we *cannot* use a case
36 # here, because this file can only contain one case statement.
37 if test "$depmode" = hp; then
38 # HP compiler uses -M and no extra arg.
43 if test "$depmode" = dashXmstdout; then
44 # This is just like dashmstdout with a different argument.
51 ## There are various ways to get dependency output from gcc. Here's
52 ## why we pick this rather obscure method:
53 ## - Don't want to use -MD because we'd like the dependencies to end
54 ## up in a subdir. Having to rename by hand is ugly.
55 ## (We might end up doing this anyway to support other compilers.)
56 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
57 ## -MM, not -M (despite what the docs say).
58 ## - Using -M directly means running the compiler twice (even worse
60 if test -z "$gccflag"; then
63 if "$@" -Wp,"$gccflag$tmpdepfile"; then :
70 echo "$object : \\" > "$depfile"
71 sed 's/^[^:]*: / /' < "$tmpdepfile" >> "$depfile"
72 ## This next piece of magic avoids the `deleted header file' problem.
73 ## The problem is that when a header file which appears in a .P file
74 ## is deleted, the dependency causes make to die (because there is
75 ## typically no way to rebuild the header). We avoid this by adding
76 ## dummy dependencies for each header file. Too bad gcc doesn't do
77 ## this for us directly.
80 ## Some versions of gcc put a space before the `:'. On the theory
81 ## that the space means something, we add a space to the output as
83 ## Some versions of the HPUX 10.20 sed can't process this invocation
84 ## correctly. Breaking it into two sed invocations is a workaround.
85 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
90 # This case exists only to let depend.m4 do its work. It works by
91 # looking at the text of this script. This case will never be run,
92 # since it is checked for above.
97 # The Java front end to gcc doesn't run cpp, so we can't use the -Wp
98 # trick. Instead we must use -M and then rename the resulting .d
99 # file. This is also the case for older versions of gcc, which
100 # don't implement -Wp.
107 FIXME: rewrite the file
111 if "$@" -MDupdate "$tmpdepfile"; then :
118 echo "$object : \\" > "$depfile"
119 sed 's/^[^:]*: / /' < "$tmpdepfile" >> "$depfile"
121 ' < "$tmpdepfile" | \
122 ## Some versions of the HPUX 10.20 sed can't process this invocation
123 ## correctly. Breaking it into two sed invocations is a workaround.
124 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
129 # This comment above is used by automake to tell side-effect
130 # dependency tracking mechanisms from slower ones.
133 # Important note: in order to support this mode, a compiler *must*
134 # always write the proprocessed file to stdout, regardless of -o,
135 # because we must use -o when running libtool.
136 test -z "$dashmflag" && dashmflag=-M
139 *" --mode=compile "*) # this is libtool, let us make it quiet
141 do # cycle over the arguments
144 # insert --quiet before "--mode=compile"
145 set fnord "$@" --quiet
149 set fnord "$@" "$arg"
155 "$@" $dashmflag | sed 's:^[^:]*\:[ ]*:'"$object"'\: :' > "$tmpdepfile"
161 if test "$stat" != 0; then exit $stat; fi
163 cat < "$tmpdepfile" > "$depfile"
165 ' < "$tmpdepfile" | \
166 ## Some versions of the HPUX 10.20 sed can't process this invocation
167 ## correctly. Breaking it into two sed invocations is a workaround.
168 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
173 # This case only exists to satisfy depend.m4. It is never actually
174 # run, as this mode is specially recognized in the preamble.
190 set fnord "$@" "$arg"; shift;;
194 set fnord "$@" "$arg"; shift;;
197 obj_suffix="`echo $object | sed 's/^.*\././'`"
199 ${MAKEDEPEND-makedepend} 2>/dev/null -o"$obj_suffix" -f"$tmpdepfile" "$@"
205 if test "$stat" != 0; then exit $stat; fi
207 cat < "$tmpdepfile" > "$depfile"
208 tail +3 "$tmpdepfile" | tr ' ' '
210 ## Some versions of the HPUX 10.20 sed can't process this invocation
211 ## correctly. Breaking it into two sed invocations is a workaround.
212 sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
213 rm -f "$tmpdepfile" "$tmpdepfile".bak
217 # Important note: in order to support this mode, a compiler *must*
218 # always write the proprocessed file to stdout, regardless of -o,
219 # because we must use -o when running libtool.
222 *" --mode=compile "*)
224 do # cycle over the arguments
227 # insert --quiet before "--mode=compile"
228 set fnord "$@" --quiet
232 set fnord "$@" "$arg"
239 sed -n '/^# [0-9][0-9]* "\([^"]*\)"/ s::'"$object"'\: \1:p' > "$tmpdepfile"
245 if test "$stat" != 0; then exit $stat; fi
247 cat < "$tmpdepfile" > "$depfile"
248 sed < "$tmpdepfile" -e 's/^[^:]*: //' -e 's/$/ :/' >> "$depfile"
257 echo "Unknown depmode $depmode" 1>&2