Dmitry V. Levin
92e347b556
We do our best to keep copyright headers up to date, yet git history provides better information on this subject and is more accurate than copyright headers.
15 lines
346 B
Plaintext
15 lines
346 B
Plaintext
#!/usr/bin/m4
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#
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# Copyright (c) 2016-2018 The strace developers.
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# All rights reserved.
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#
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# SPDX-License-Identifier: LGPL-2.1-or-later
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AC_DEFUN([st_SAVE_VAR], [dnl
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AS_IF([test -n "${$1+set}"], [st_saved_$1="${$1}"; unset $1])
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])
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AC_DEFUN([st_RESTORE_VAR], [dnl
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AS_IF([test -n "${st_saved_$1+set}"], [$1="${st_saved_$1}"; unset st_saved_$1])
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])
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