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64 lines
2.1 KiB
Plaintext
64 lines
2.1 KiB
Plaintext
#
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# Check to make sure that the build environment is sane.
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#
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# Copyright 1996, 1997, 2000, 2001 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 2, or (at your option)
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# any later version.
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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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# 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., 59 Temple Place - Suite 330, Boston, MA
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# 02111-1307, USA.
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# serial 3
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# AM_SANITY_CHECK
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# ---------------
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AC_DEFUN([AM_SANITY_CHECK],
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[AC_MSG_CHECKING([whether build environment is sane])
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# Just in case
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sleep 1
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echo timestamp > conftest.file
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# Do `set' in a subshell so we don't clobber the current shell's
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# arguments. Must try -L first in case configure is actually a
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# symlink; some systems play weird games with the mod time of symlinks
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# (eg FreeBSD returns the mod time of the symlink's containing
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# directory).
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if (
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set X `ls -Lt $srcdir/configure conftest.file 2> /dev/null`
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if test "$[*]" = "X"; then
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# -L didn't work.
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set X `ls -t $srcdir/configure conftest.file`
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fi
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rm -f conftest.file
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if test "$[*]" != "X $srcdir/configure conftest.file" \
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&& test "$[*]" != "X conftest.file $srcdir/configure"; then
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# If neither matched, then we have a broken ls. This can happen
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# if, for instance, CONFIG_SHELL is bash and it inherits a
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# broken ls alias from the environment. This has actually
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# happened. Such a system could not be considered "sane".
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AC_MSG_ERROR([ls -t appears to fail. Make sure there is not a broken
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alias in your environment])
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fi
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test "$[2]" = conftest.file
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)
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then
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# Ok.
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:
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else
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AC_MSG_ERROR([newly created file is older than distributed files!
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Check your system clock])
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fi
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AC_MSG_RESULT(yes)])
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