3 dnl Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2005 Free Software
6 dnl This file is free software; the Free Software Foundation
7 dnl gives unlimited permission to copy and/or distribute it,
8 dnl with or without modifications, as long as this notice is preserved.
12 dnl See if there's a working, system-supplied version of the getline function.
13 dnl We can't just do AC_REPLACE_FUNCS(getline) because some systems
14 dnl have a function by that name in -linet that doesn't have anything
15 dnl to do with the function we need.
16 AC_DEFUN([gl_FUNC_GETLINE],
18 AC_LIBSOURCES([getline.c, getline.h])
20 dnl Persuade glibc <stdio.h> to declare getline().
21 AC_REQUIRE([AC_GNU_SOURCE])
23 AC_CHECK_DECLS([getline])
25 gl_getline_needs_run_time_check=no
26 AC_CHECK_FUNC(getline,
27 dnl Found it in some library. Verify that it works.
28 gl_getline_needs_run_time_check=yes,
29 am_cv_func_working_getline=no)
30 if test $gl_getline_needs_run_time_check = yes; then
31 AC_CACHE_CHECK([for working getline function], am_cv_func_working_getline,
32 [echo fooN |tr -d '\012'|tr N '\012' > conftest.data
38 { /* Based on a test program from Karl Heuer. */
42 FILE *in = fopen ("./conftest.data", "r");
45 len = getline (&line, &siz, in);
46 exit ((len == 4 && line && strcmp (line, "foo\n") == 0) ? 0 : 1);
48 ], am_cv_func_working_getline=yes dnl The library version works.
49 , am_cv_func_working_getline=no dnl The library version does NOT work.
50 , am_cv_func_working_getline=no dnl We're cross compiling.
54 if test $am_cv_func_working_getline = no; then
55 dnl We must choose a different name for our function, since on ELF systems
56 dnl a broken getline() in libc.so would override our getline() in
58 AC_DEFINE([getline], [gnu_getline],
59 [Define to a replacement function name for getline().])
66 # Prerequisites of lib/getline.c.
67 AC_DEFUN([gl_PREREQ_GETLINE],