2 # Copyright (C) 2009-2012 Free Software Foundation, Inc.
4 # This program is free software; you can redistribute it and/or modify
5 # it under the terms of the GNU General Public License as published by
6 # the Free Software Foundation; either version 2, or (at your option)
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program. If not, see <http://www.gnu.org/licenses/>.
17 # Ensure that 'make -n dist' and 'make -n distcheck' do not change files
18 # on disk, due to GNU make executing rules containing '$(MAKE)'.
19 # Also, ensure that 'make -n dist' and 'make -n distcheck' show what
20 # would happen, at least when using GNU make.
26 cat >> configure.ac << 'END'
27 AC_CONFIG_FILES([sub/Makefile])
31 cat > Makefile.am <<'END'
34 @: > stamp-distcheck-hook
37 test ! -f stamp-distcheck-hook
38 test ! -f sub/stamp-sub-dist-hook
40 cat >sub/Makefile.am <<'END'
42 @: > stamp-sub-dist-hook
50 echo stamp > stampfile
52 for target in dist distcheck; do
55 $MAKE -n $target | grep stamp-sub-dist-hook || Exit 1
58 # No file has been actually touched or created.
59 is_newest stampfile $(find .)