# getline.m4 serial 10 dnl Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 Free Software dnl Foundation, Inc. dnl This file is free software, distributed under the terms of the GNU dnl General Public License. As a special exception to the GNU General dnl Public License, this file may be distributed as part of a program dnl that contains a configuration script generated by Autoconf, under dnl the same distribution terms as the rest of that program. AC_PREREQ(2.52) dnl See if there's a working, system-supplied version of the getline function. dnl We can't just do AC_REPLACE_FUNCS(getline) because some systems dnl have a function by that name in -linet that doesn't have anything dnl to do with the function we need. AC_DEFUN([AM_FUNC_GETLINE], [ dnl Persuade glibc <stdio.h> to declare getline() and getdelim(). AC_REQUIRE([AC_GNU_SOURCE]) am_getline_needs_run_time_check=no AC_CHECK_FUNC(getline, dnl Found it in some library. Verify that it works. am_getline_needs_run_time_check=yes, am_cv_func_working_getline=no) if test $am_getline_needs_run_time_check = yes; then AC_CACHE_CHECK([for working getline function], am_cv_func_working_getline, [echo fooN |tr -d '\012'|tr N '\012' > conftest.data AC_TRY_RUN([ # include <stdio.h> # include <stdlib.h> # include <string.h> int main () { /* Based on a test program from Karl Heuer. */ char *line = NULL; size_t siz = 0; int len; FILE *in = fopen ("./conftest.data", "r"); if (!in) return 1; len = getline (&line, &siz, in); exit ((len == 4 && line && strcmp (line, "foo\n") == 0) ? 0 : 1); } ], am_cv_func_working_getline=yes dnl The library version works. , am_cv_func_working_getline=no dnl The library version does NOT work. , am_cv_func_working_getline=no dnl We're cross compiling. )]) fi if test $am_cv_func_working_getline = no; then dnl We must choose a different name for our function, since on ELF systems dnl a broken getline() in libc.so would override our getline() in dnl libgettextlib.so. AC_DEFINE([getline], [gnu_getline], [Define to a replacement function name for getline().]) AC_LIBOBJ(getline) # Avoid multiple inclusions of getndelim2.o into LIBOBJS. # This hack won't be needed after gnulib requires Autoconf 2.58 or later. case " $LIB@&t@OBJS " in *" getndelim2.$ac_objext "* ) ;; *) AC_LIBOBJ(getndelim2);; esac gl_PREREQ_GETLINE gl_PREREQ_GETNDELIM2 fi ]) # Prerequisites of lib/getline.c. AC_DEFUN([gl_PREREQ_GETLINE], [ AC_CHECK_FUNCS(getdelim) ])