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35 lines
1.2 KiB
Plaintext
35 lines
1.2 KiB
Plaintext
#serial 3
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# Copyright (C) 2005 Free Software Foundation, Inc.
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#
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# This file is free software; the Free Software Foundation
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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# Written by Paul Eggert.
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AC_DEFUN([gl_UNLINKDIR],
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[
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AC_REQUIRE([AC_CANONICAL_HOST])
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AC_CHECK_HEADERS_ONCE(priv.h)
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AC_LIBSOURCES([unlinkdir.c, unlinkdir.h])
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AC_LIBOBJ([unlinkdir])
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# The Hurd, the Linux kernel, the FreeBSD kernel version 2.2 and later,
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# and Cygwin never let anyone (even root) unlink directories.
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# If anyone knows of another system for which unlink can never
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# remove a directory, please report it to <bug-coreutils@gnu.org>.
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# Unfortunately this is difficult to test for, since it requires root access
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# and might create garbage in the file system,
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# so the code below simply relies on the kernel name and version number.
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case $host in
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*-*-gnu[0-9]* | \
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*-*-linux-* | *-*-linux | \
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*-*-freebsd2.2* | *-*-freebsd[3-9]* | *-*-freebsd[1-9][0-9]* | \
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*-cygwin)
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AC_DEFINE([UNLINK_CANNOT_UNLINK_DIR], 1,
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[Define to 1 if unlink (dir) cannot possibly succeed.]);;
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esac
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])
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