source: trunk/essentials/sys-devel/automake-1.7/m4/depout.m4

Last change on this file was 3120, checked in by bird, 18 years ago

automake 1.7.9

File size: 3.0 KB
Line 
1# Generate code to set up dependency tracking. -*- Autoconf -*-
2
3# Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
4
5# This program is free software; you can redistribute it and/or modify
6# it under the terms of the GNU General Public License as published by
7# the Free Software Foundation; either version 2, or (at your option)
8# any later version.
9
10# This program is distributed in the hope that it will be useful,
11# but WITHOUT ANY WARRANTY; without even the implied warranty of
12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13# GNU General Public License for more details.
14
15# You should have received a copy of the GNU General Public License
16# along with this program; if not, write to the Free Software
17# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
18# 02111-1307, USA.
19
20#serial 2
21
22# _AM_OUTPUT_DEPENDENCY_COMMANDS
23# ------------------------------
24AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
25[for mf in $CONFIG_FILES; do
26 # Strip MF so we end up with the name of the file.
27 mf=`echo "$mf" | sed -e 's/:.*$//'`
28 # Check whether this is an Automake generated Makefile or not.
29 # We used to match only the files named `Makefile.in', but
30 # some people rename them; so instead we look at the file content.
31 # Grep'ing the first line is not enough: some people post-process
32 # each Makefile.in and add a new line on top of each file to say so.
33 # So let's grep whole file.
34 if grep '^#.*generated by automake' $mf > /dev/null 2>&1; then
35 dirpart=`AS_DIRNAME("$mf")`
36 else
37 continue
38 fi
39 grep '^DEP_FILES *= *[[^ @%:@]]' < "$mf" > /dev/null || continue
40 # Extract the definition of DEP_FILES from the Makefile without
41 # running `make'.
42 DEPDIR=`sed -n -e '/^DEPDIR = / s///p' < "$mf"`
43 test -z "$DEPDIR" && continue
44 # When using ansi2knr, U may be empty or an underscore; expand it
45 U=`sed -n -e '/^U = / s///p' < "$mf"`
46 test -d "$dirpart/$DEPDIR" || mkdir "$dirpart/$DEPDIR"
47 # We invoke sed twice because it is the simplest approach to
48 # changing $(DEPDIR) to its actual value in the expansion.
49 for file in `sed -n -e '
50 /^DEP_FILES = .*\\\\$/ {
51 s/^DEP_FILES = //
52 :loop
53 s/\\\\$//
54 p
55 n
56 /\\\\$/ b loop
57 p
58 }
59 /^DEP_FILES = / s/^DEP_FILES = //p' < "$mf" | \
60 sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
61 # Make sure the directory exists.
62 test -f "$dirpart/$file" && continue
63 fdir=`AS_DIRNAME(["$file"])`
64 AS_MKDIR_P([$dirpart/$fdir])
65 # echo "creating $dirpart/$file"
66 echo '# dummy' > "$dirpart/$file"
67 done
68done
69])# _AM_OUTPUT_DEPENDENCY_COMMANDS
70
71
72# AM_OUTPUT_DEPENDENCY_COMMANDS
73# -----------------------------
74# This macro should only be invoked once -- use via AC_REQUIRE.
75#
76# This code is only required when automatic dependency tracking
77# is enabled. FIXME. This creates each `.P' file that we will
78# need in order to bootstrap the dependency handling code.
79AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
80[AC_CONFIG_COMMANDS([depfiles],
81 [test x"$AMDEP_TRUE" != x"" || _AM_OUTPUT_DEPENDENCY_COMMANDS],
82 [AMDEP_TRUE="$AMDEP_TRUE" ac_aux_dir="$ac_aux_dir"])
83])
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