# getline.m4 serial 13 dnl Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2005 Free Software dnl Foundation, Inc. dnl 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_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([gl_FUNC_GETLINE], [ AC_LIBSOURCES([getline.c, getline.h]) dnl Persuade glibc to declare getline(). AC_REQUIRE([AC_GNU_SOURCE]) AC_CHECK_DECLS([getline]) gl_getline_needs_run_time_check=no AC_CHECK_FUNC(getline, dnl Found it in some library. Verify that it works. gl_getline_needs_run_time_check=yes, am_cv_func_working_getline=no) if test $gl_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 # include # include 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) gl_PREREQ_GETLINE fi ]) # Prerequisites of lib/getline.c. AC_DEFUN([gl_PREREQ_GETLINE], [ gl_FUNC_GETDELIM ])