1# ctype_h.m4 serial 9 2dnl Copyright (C) 2009-2022 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7AC_DEFUN_ONCE([gl_CTYPE_H], 8[ 9 AC_REQUIRE([gl_CTYPE_H_DEFAULTS]) 10 11 dnl <ctype.h> is always overridden, because of GNULIB_POSIXCHECK. 12 gl_NEXT_HEADERS([ctype.h]) 13 14 dnl Check for declarations of anything we want to poison if the 15 dnl corresponding gnulib module is not in use. 16 gl_WARN_ON_USE_PREPARE([[#include <ctype.h> 17 ]], [isblank]) 18]) 19 20# gl_CTYPE_MODULE_INDICATOR([modulename]) 21# sets the shell variable that indicates the presence of the given module 22# to a C preprocessor expression that will evaluate to 1. 23# This macro invocation must not occur in macros that are AC_REQUIREd. 24AC_DEFUN([gl_CTYPE_MODULE_INDICATOR], 25[ 26 dnl Ensure to expand the default settings once only. 27 gl_CTYPE_H_REQUIRE_DEFAULTS 28 gl_MODULE_INDICATOR_SET_VARIABLE([$1]) 29]) 30 31# Initializes the default values for AC_SUBSTed shell variables. 32# This macro must not be AC_REQUIREd. It must only be invoked, and only 33# outside of macros or in macros that are not AC_REQUIREd. 34AC_DEFUN([gl_CTYPE_H_REQUIRE_DEFAULTS], 35[ 36 m4_defun(GL_MODULE_INDICATOR_PREFIX[_CTYPE_H_MODULE_INDICATOR_DEFAULTS], [ 37 gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISBLANK]) 38 ]) 39 m4_require(GL_MODULE_INDICATOR_PREFIX[_CTYPE_H_MODULE_INDICATOR_DEFAULTS]) 40 AC_REQUIRE([gl_CTYPE_H_DEFAULTS]) 41]) 42 43AC_DEFUN([gl_CTYPE_H_DEFAULTS], 44[ 45 dnl Assume proper GNU behavior unless another module says otherwise. 46 HAVE_ISBLANK=1; AC_SUBST([HAVE_ISBLANK]) 47]) 48