2N/A# getdelim.m4 serial 6

2N/A

2N/Adnl Copyright (C) 2005-2007, 2009-2010 Free Software Foundation, Inc.

2N/Adnl

2N/Adnl This file is free software; the Free Software Foundation

2N/Adnl gives unlimited permission to copy and/or distribute it,

2N/Adnl with or without modifications, as long as this notice is preserved.

2N/A

2N/AAC_PREREQ([2.59])

2N/A

2N/AAC_DEFUN([gl_FUNC_GETDELIM],

2N/A[

2N/A AC_REQUIRE([gl_STDIO_H_DEFAULTS])

2N/A

2N/A dnl Persuade glibc <stdio.h> to declare getdelim().

2N/A AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])

2N/A

2N/A AC_CHECK_DECLS_ONCE([getdelim])

2N/A

2N/A AC_CHECK_FUNCS_ONCE([getdelim])

2N/A if test $ac_cv_func_getdelim = yes; then

2N/A dnl Found it in some library. Verify that it works.

2N/A AC_CACHE_CHECK([for working getdelim function], [gl_cv_func_working_getdelim],

2N/A [echo fooNbarN | tr -d '\012' | tr N '\012' > conftest.data

2N/A AC_RUN_IFELSE([AC_LANG_SOURCE([[

2N/A# include <stdio.h>

2N/A# include <stdlib.h>

2N/A# include <string.h>

2N/A int main ()

2N/A {

2N/A FILE *in = fopen ("./conftest.data", "r");

2N/A if (!in)

2N/A return 1;

2N/A {

2N/A /* Test result for a NULL buffer and a zero size.

2N/A Based on a test program from Karl Heuer. */

2N/A char *line = NULL;

2N/A size_t siz = 0;

2N/A int len = getdelim (&line, &siz, '\n', in);

2N/A if (!(len == 4 && line && strcmp (line, "foo\n") == 0))

2N/A return 1;

2N/A }

2N/A {

2N/A /* Test result for a NULL buffer and a non-zero size.

2N/A This crashes on FreeBSD 8.0. */

2N/A char *line = NULL;

2N/A size_t siz = (size_t)(~0) / 4;

2N/A if (getdelim (&line, &siz, '\n', in) == -1)

2N/A return 1;

2N/A }

2N/A return 0;

2N/A }

2N/A ]])], [gl_cv_func_working_getdelim=yes] dnl The library version works.

2N/A , [gl_cv_func_working_getdelim=no] dnl The library version does NOT work.

2N/A , dnl We're cross compiling. Assume it works on glibc2 systems.

2N/A [AC_EGREP_CPP([Lucky GNU user],

2N/A [

2N/A#include <features.h>

2N/A#ifdef __GNU_LIBRARY__

2N/A #if (__GLIBC__ >= 2)

2N/A Lucky GNU user

2N/A #endif

2N/A#endif

2N/A ],

2N/A [gl_cv_func_working_getdelim=yes],

2N/A [gl_cv_func_working_getdelim=no])]

2N/A )])

2N/A else

2N/A gl_cv_func_working_getdelim=no

2N/A fi

2N/A

2N/A if test $ac_cv_have_decl_getdelim = no; then

2N/A HAVE_DECL_GETDELIM=0

2N/A fi

2N/A

2N/A if test $gl_cv_func_working_getdelim = no; then

2N/A if test $ac_cv_func_getdelim = yes; then

2N/A REPLACE_GETDELIM=1

2N/A fi

2N/A AC_LIBOBJ([getdelim])

2N/A gl_PREREQ_GETDELIM

2N/A fi

2N/A])

2N/A

2N/A# Prerequisites of lib/getdelim.c.

2N/AAC_DEFUN([gl_PREREQ_GETDELIM],

2N/A[

2N/A AC_CHECK_FUNCS([flockfile funlockfile])

2N/A AC_CHECK_DECLS([getc_unlocked])

2N/A])