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b95a1aea40
All files changed to add 2010, via 'make update-copyright'. Signed-off-by: Eric Blake <ebb9@byu.net>
47 lines
1.6 KiB
Plaintext
47 lines
1.6 KiB
Plaintext
# statesave.m4 serial 2
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# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
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# 2009, 2010 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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# AC_STATE_SAVE(FILE)
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# -------------------
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# Save the shell variables and directory listing. AT_CHECK_ENV uses these to
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# confirm that no test modifies variables outside the Autoconf namespace or
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# leaves temporary files. AT_CONFIG_CMP uses the variable dumps to confirm
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# that tests have the same side effects regardless of caching.
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#
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# The sed script duplicates uniq functionality (thanks to 'info sed
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# uniq' for the recipe), in order to avoid a MacOS 10.5 bug where
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# readdir can list a file multiple times in a rapidly changing
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# directory, while avoiding yet another fork.
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m4_defun([AC_STATE_SAVE],
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[(set) 2>&1 | sort >state-env.$1
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ls | sed '/^at-/d;/^state-/d;/^config\./d
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h
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:b
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$b
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N
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/^\(.*\)\n\1$/ {
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g
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bb
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}
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$b
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P
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D' >state-ls.$1
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])# AC_STATE_SAVE
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