Mercurial > gnulib
view m4/unlinkat.m4 @ 40204:db8428454956
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author | Karl Berry <karl@freefriends.org> |
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date | Sun, 03 Mar 2019 14:09:37 -0800 |
parents | b06060465f09 |
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# unlinkat.m4 serial 2 dnl Copyright (C) 2004-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. # Written by Jim Meyering. AC_DEFUN([gl_FUNC_UNLINKAT], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_CHECK_FUNCS_ONCE([unlinkat]) AC_REQUIRE([gl_FUNC_UNLINK]) AC_REQUIRE([gl_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK]) if test $ac_cv_func_unlinkat = no; then HAVE_UNLINKAT=0 else case "$gl_cv_func_lstat_dereferences_slashed_symlink" in *no) # Solaris 9 has *at functions, but uniformly mishandles trailing # slash in all of them. REPLACE_UNLINKAT=1 ;; *) # GNU/Hurd has unlinkat, but it has the same bug as unlink. # Darwin has unlinkat, but it has the same UNLINK_PARENT_BUG. if test $REPLACE_UNLINK = 1; then REPLACE_UNLINKAT=1 fi ;; esac fi ])