3 dnl Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software
5 dnl This file is free software; the Free Software Foundation
6 dnl gives unlimited permission to copy and/or distribute it,
7 dnl with or without modifications, as long as this notice is preserved.
11 dnl See if there's a working, system-supplied version of the getline function.
12 dnl We can't just do AC_REPLACE_FUNCS(getline) because some systems
13 dnl have a function by that name in -linet that doesn't have anything
14 dnl to do with the function we need.
15 AC_DEFUN([AM_FUNC_GETLINE],
17 dnl Persuade glibc <stdio.h> to declare getline() and getdelim().
18 AC_REQUIRE([AC_GNU_SOURCE])
20 am_getline_needs_run_time_check=no
21 AC_CHECK_FUNC(getline,
22 dnl Found it in some library. Verify that it works.
23 am_getline_needs_run_time_check=yes,
24 am_cv_func_working_getline=no)
25 if test $am_getline_needs_run_time_check = yes; then
26 AC_CACHE_CHECK([for working getline function], am_cv_func_working_getline,
27 [echo fooN |tr -d '\012'|tr N '\012' > conftest.data
33 { /* Based on a test program from Karl Heuer. */
37 FILE *in = fopen ("./conftest.data", "r");
40 len = getline (&line, &siz, in);
41 exit ((len == 4 && line && strcmp (line, "foo\n") == 0) ? 0 : 1);
43 ], am_cv_func_working_getline=yes dnl The library version works.
44 , am_cv_func_working_getline=no dnl The library version does NOT work.
45 , am_cv_func_working_getline=no dnl We're cross compiling.
49 if test $am_cv_func_working_getline = no; then
50 dnl We must choose a different name for our function, since on ELF systems
51 dnl a broken getline() in libc.so would override our getline() in
53 AC_DEFINE([getline], [gnu_getline],
54 [Define to a replacement function name for getline().])
62 # Prerequisites of lib/getline.c.
63 AC_DEFUN([gl_PREREQ_GETLINE],
65 AC_CHECK_FUNCS(getdelim)