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      1      1.1  christos # isblank.m4 serial 3
      2  1.1.1.2  christos dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
      3      1.1  christos dnl This file is free software; the Free Software Foundation
      4      1.1  christos dnl gives unlimited permission to copy and/or distribute it,
      5      1.1  christos dnl with or without modifications, as long as this notice is preserved.
      6      1.1  christos 
      7      1.1  christos AC_DEFUN([gl_FUNC_ISBLANK],
      8      1.1  christos [
      9      1.1  christos   dnl Persuade glibc <ctype.h> to declare isblank().
     10      1.1  christos   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
     11      1.1  christos 
     12      1.1  christos   AC_REQUIRE([gl_CTYPE_H_DEFAULTS])
     13      1.1  christos   AC_CHECK_FUNCS_ONCE([isblank])
     14      1.1  christos   if test $ac_cv_func_isblank = no; then
     15      1.1  christos     HAVE_ISBLANK=0
     16      1.1  christos   fi
     17      1.1  christos ])
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