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annotate m4/link.m4 @ 15009:2917eb19f982

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truncl: Move AC_LIBOBJ invocations to module description. * m4/truncl.m4 (gl_FUNC_TRUNCL): Move AC_LIBOBJ invocation from here... * modules/truncl (configure.ac): ... to here.
author Bruno Haible <bruno@clisp.org>
date Sat, 21 May 2011 11:32:55 +0200
parents 97fc9a21a8fb
children ff4e14f9c0be
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 # link.m4 serial 5
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2 dnl Copyright (C) 2009-2011 Free Software Foundation, Inc.
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3 dnl This file is free software; the Free Software Foundation
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4 dnl gives unlimited permission to copy and/or distribute it,
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5 dnl with or without modifications, as long as this notice is preserved.
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6
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7 AC_DEFUN([gl_FUNC_LINK],
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8 [
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9 AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
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10 AC_CHECK_FUNCS_ONCE([link])
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11 if test $ac_cv_func_link = no; then
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12 HAVE_LINK=0
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13 AC_LIBOBJ([link])
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14 else
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15 AC_CACHE_CHECK([whether link handles trailing slash correctly],
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16 [gl_cv_func_link_works],
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17 [touch conftest.a
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18 # Assume that if we have lstat, we can also check symlinks.
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19 if test $ac_cv_func_lstat = yes; then
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20 ln -s conftest.a conftest.lnk
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21 fi
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22 AC_RUN_IFELSE(
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23 [AC_LANG_PROGRAM(
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24 [[#include <unistd.h>
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25 ]],
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26 [[int result = 0;
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27 if (!link ("conftest.a", "conftest.b/"))
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28 result |= 1;
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29 #if HAVE_LSTAT
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30 if (!link ("conftest.lnk/", "conftest.b"))
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31 result |= 2;
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32 #endif
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33 return result;
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34 ]])],
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35 [gl_cv_func_link_works=yes], [gl_cv_func_link_works=no],
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36 [gl_cv_func_link_works="guessing no"])
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37 rm -f conftest.a conftest.b conftest.lnk])
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38 if test "$gl_cv_func_link_works" != yes; then
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39 REPLACE_LINK=1
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40 AC_LIBOBJ([link])
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41 fi
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42 fi
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43 ])