view m4/isblank.m4 @ 14434:7624b26aea3d

sys_socket, netdb: Document problem with socklen_t. * doc/posix-headers/sys_socket.texi: Mention lack of socklen_t on some platforms. * doc/posix-headers/netdb.texi: Likewise.
author Bruno Haible <bruno@clisp.org>
date Sat, 19 Mar 2011 13:39:12 +0100
parents 97fc9a21a8fb
children 2f5bc02c2203
line wrap: on
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# isblank.m4 serial 2
dnl Copyright (C) 2009-2011 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

AC_DEFUN([gl_FUNC_ISBLANK],
[
  dnl Persuade glibc <ctype.h> to declare isblank().
  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])

  AC_REQUIRE([gl_CTYPE_H_DEFAULTS])
  AC_CHECK_FUNCS_ONCE([isblank])
  if test $ac_cv_func_isblank = no; then
    HAVE_ISBLANK=0
    AC_LIBOBJ([isblank])
  fi
])