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1 # strnlen.m4 serial 10
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2 dnl Copyright (C) 2002-2003, 2005-2007, 2009-2010 Free Software Foundation,
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3 dnl Inc.
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4 dnl This file is free software; the Free Software Foundation
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5 dnl gives unlimited permission to copy and/or distribute it,
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6 dnl with or without modifications, as long as this notice is preserved.
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7
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8 AC_DEFUN([gl_FUNC_STRNLEN],
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9 [
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10 dnl Persuade glibc <string.h> to declare strnlen().
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11 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
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12
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13 AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
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14 AC_CHECK_DECLS_ONCE([strnlen])
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15 if test $ac_cv_have_decl_strnlen = no; then
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16 HAVE_DECL_STRNLEN=0
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17 fi
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18
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19 AC_FUNC_STRNLEN
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20 if test $ac_cv_func_strnlen_working = no; then
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21 # This is necessary because automake-1.6.1 doesn't understand
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22 # that the above use of AC_FUNC_STRNLEN means we may have to use
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23 # lib/strnlen.c.
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24 #AC_LIBOBJ([strnlen])
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25 AC_DEFINE([strnlen], [rpl_strnlen],
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26 [Define to rpl_strnlen if the replacement function should be used.])
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27 gl_PREREQ_STRNLEN
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28 fi
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29 ])
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30
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31 # Prerequisites of lib/strnlen.c.
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32 AC_DEFUN([gl_PREREQ_STRNLEN], [:])
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