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1 # strnlen.m4 serial 9
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2 dnl Copyright (C) 2002-2003, 2005-2007 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_STRNLEN],
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8 [
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9 dnl Persuade glibc <string.h> to declare strnlen().
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10 AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
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11
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12 AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
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13 AC_CHECK_DECLS_ONCE([strnlen])
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14 if test $ac_cv_have_decl_strnlen = no; then
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15 HAVE_DECL_STRNLEN=0
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16 fi
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17
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18 AC_FUNC_STRNLEN
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19 if test $ac_cv_func_strnlen_working = no; then
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20 # This is necessary because automake-1.6.1 doesn't understand
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21 # that the above use of AC_FUNC_STRNLEN means we may have to use
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22 # lib/strnlen.c.
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23 #AC_LIBOBJ(strnlen)
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24 AC_DEFINE(strnlen, rpl_strnlen,
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25 [Define to rpl_strnlen if the replacement function should be used.])
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26 gl_PREREQ_STRNLEN
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27 fi
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28 ])
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29
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30 # Prerequisites of lib/strnlen.c.
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31 AC_DEFUN([gl_PREREQ_STRNLEN], [:])
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