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author Karl Berry <karl@freefriends.org>
date Fri, 16 Aug 2013 06:32:22 -0700
parents e542fd46ad6f
children
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1 # Configure a replacement for <strings.h>.
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2 # serial 6
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3
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4 # Copyright (C) 2007, 2009-2013 Free Software Foundation, Inc.
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5 # This file is free software; the Free Software Foundation
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6 # gives unlimited permission to copy and/or distribute it,
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7 # with or without modifications, as long as this notice is preserved.
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8
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9 AC_DEFUN([gl_HEADER_STRINGS_H],
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10 [
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11 dnl Use AC_REQUIRE here, so that the default behavior below is expanded
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12 dnl once only, before all statements that occur in other macros.
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13 AC_REQUIRE([gl_HEADER_STRINGS_H_BODY])
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14 ])
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15
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16 AC_DEFUN([gl_HEADER_STRINGS_H_BODY],
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17 [
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18 AC_REQUIRE([gl_HEADER_STRINGS_H_DEFAULTS])
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19
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20 gl_CHECK_NEXT_HEADERS([strings.h])
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21 if test $ac_cv_header_strings_h = yes; then
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22 HAVE_STRINGS_H=1
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23 else
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24 HAVE_STRINGS_H=0
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25 fi
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26 AC_SUBST([HAVE_STRINGS_H])
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27
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28 dnl Check for declarations of anything we want to poison if the
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29 dnl corresponding gnulib module is not in use.
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30 gl_WARN_ON_USE_PREPARE([[
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31 /* Minix 3.1.8 has a bug: <sys/types.h> must be included before
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32 <strings.h>. */
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33 #include <sys/types.h>
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34 #include <strings.h>
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35 ]], [ffs strcasecmp strncasecmp])
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36 ])
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37
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38 AC_DEFUN([gl_STRINGS_MODULE_INDICATOR],
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39 [
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40 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
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41 AC_REQUIRE([gl_HEADER_STRINGS_H_DEFAULTS])
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42 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
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43 ])
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44
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45 AC_DEFUN([gl_HEADER_STRINGS_H_DEFAULTS],
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46 [
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47 GNULIB_FFS=0; AC_SUBST([GNULIB_FFS])
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48 dnl Assume proper GNU behavior unless another module says otherwise.
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49 HAVE_FFS=1; AC_SUBST([HAVE_FFS])
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50 HAVE_STRCASECMP=1; AC_SUBST([HAVE_STRCASECMP])
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51 HAVE_DECL_STRNCASECMP=1; AC_SUBST([HAVE_DECL_STRNCASECMP])
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52 ])