| 1 | # ctype_h.m4 serial 9
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| 2 | dnl Copyright (C) 2009-2021 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_ONCE([gl_CTYPE_H],
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| 8 | [
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| 9 | AC_REQUIRE([gl_CTYPE_H_DEFAULTS])
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| 10 |
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| 11 | dnl <ctype.h> is always overridden, because of GNULIB_POSIXCHECK.
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| 12 | gl_NEXT_HEADERS([ctype.h])
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| 13 |
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| 14 | dnl Check for declarations of anything we want to poison if the
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| 15 | dnl corresponding gnulib module is not in use.
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| 16 | gl_WARN_ON_USE_PREPARE([[#include <ctype.h>
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| 17 | ]], [isblank])
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| 18 | ])
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| 19 |
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| 20 | # gl_CTYPE_MODULE_INDICATOR([modulename])
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| 21 | # sets the shell variable that indicates the presence of the given module
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| 22 | # to a C preprocessor expression that will evaluate to 1.
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| 23 | # This macro invocation must not occur in macros that are AC_REQUIREd.
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| 24 | AC_DEFUN([gl_CTYPE_MODULE_INDICATOR],
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| 25 | [
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| 26 | dnl Ensure to expand the default settings once only.
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| 27 | gl_CTYPE_H_REQUIRE_DEFAULTS
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| 28 | gl_MODULE_INDICATOR_SET_VARIABLE([$1])
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| 29 | ])
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| 30 |
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| 31 | # Initializes the default values for AC_SUBSTed shell variables.
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| 32 | # This macro must not be AC_REQUIREd. It must only be invoked, and only
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| 33 | # outside of macros or in macros that are not AC_REQUIREd.
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| 34 | AC_DEFUN([gl_CTYPE_H_REQUIRE_DEFAULTS],
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| 35 | [
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| 36 | m4_defun(GL_MODULE_INDICATOR_PREFIX[_CTYPE_H_MODULE_INDICATOR_DEFAULTS], [
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| 37 | gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISBLANK])
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| 38 | ])
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| 39 | m4_require(GL_MODULE_INDICATOR_PREFIX[_CTYPE_H_MODULE_INDICATOR_DEFAULTS])
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| 40 | AC_REQUIRE([gl_CTYPE_H_DEFAULTS])
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| 41 | ])
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| 42 |
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| 43 | AC_DEFUN([gl_CTYPE_H_DEFAULTS],
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| 44 | [
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| 45 | dnl Assume proper GNU behavior unless another module says otherwise.
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| 46 | HAVE_ISBLANK=1; AC_SUBST([HAVE_ISBLANK])
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| 47 | ])
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