3 dnl Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 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([AM_FUNC_GETLINE],
18 dnl Persuade glibc <stdio.h> to declare getline() and getdelim().
19 AC_REQUIRE([AC_GNU_SOURCE])
21 am_getline_needs_run_time_check=no
22 AC_CHECK_FUNC(getline,
23 dnl Found it in some library. Verify that it works.
24 am_getline_needs_run_time_check=yes,
25 am_cv_func_working_getline=no)
26 if test $am_getline_needs_run_time_check = yes; then
27 AC_CACHE_CHECK([for working getline function], am_cv_func_working_getline,
28 [echo fooN |tr -d '\012'|tr N '\012' > conftest.data
34 { /* Based on a test program from Karl Heuer. */
38 FILE *in = fopen ("./conftest.data", "r");
41 len = getline (&line, &siz, in);
42 exit ((len == 4 && line && strcmp (line, "foo\n") == 0) ? 0 : 1);
44 ], am_cv_func_working_getline=yes dnl The library version works.
45 , am_cv_func_working_getline=no dnl The library version does NOT work.
46 , am_cv_func_working_getline=no dnl We're cross compiling.
50 if test $am_cv_func_working_getline = no; then
51 dnl We must choose a different name for our function, since on ELF systems
52 dnl a broken getline() in libc.so would override our getline() in
54 AC_DEFINE([getline], [gnu_getline],
55 [Define to a replacement function name for getline().])
58 # Avoid multiple inclusions of getndelim2.o into LIBOBJS.
59 # This hack won't be needed after gnulib requires Autoconf 2.58 or later.
60 case " $LIB@&t@OBJS " in
61 *" getndelim2.$ac_objext "* ) ;;
62 *) AC_LIBOBJ(getndelim2);;
70 # Prerequisites of lib/getline.c.
71 AC_DEFUN([gl_PREREQ_GETLINE],
73 AC_CHECK_FUNCS(getdelim)