File: getsubopt.m4

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# getsubopt.m4 serial 4
dnl Copyright (C) 2004, 2007, 2009, 2010 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_GETSUBOPT],
[
  dnl Persuade glibc <stdlib.h> to declare getsubopt().
  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])

  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
  AC_CHECK_FUNCS_ONCE([getsubopt])
  if test $ac_cv_func_getsubopt = no; then
    HAVE_GETSUBOPT=0
    AC_LIBOBJ([getsubopt])
    gl_PREREQ_GETSUBOPT
  fi
])

# Prerequisites of lib/getsubopt.c.
AC_DEFUN([gl_PREREQ_GETSUBOPT], [:])