1#serial 4
2
3dnl See if there's a working, system-supplied version of the getline function.
4dnl We can't just do AC_REPLACE_FUNCS(getline) because some systems
5dnl have a function by that name in -linet that doesn't have anything
6dnl to do with the function we need.
7AC_DEFUN([AM_FUNC_GETLINE],
8[dnl
9  am_getline_needs_run_time_check=no
10  AC_CHECK_FUNC(getline,
11		dnl Found it in some library.  Verify that it works.
12		am_getline_needs_run_time_check=yes,
13		am_cv_func_working_getline=no)
14  if test $am_getline_needs_run_time_check = yes; then
15    AC_CACHE_CHECK([for working getline function], am_cv_func_working_getline,
16    [echo fooN |tr -d '\012'|tr N '\012' > conftest.data
17    AC_TRY_RUN([
18#    include <stdio.h>
19#    include <sys/types.h>
20#    include <string.h>
21    int main ()
22    { /* Based on a test program from Karl Heuer.  */
23      char *line = NULL;
24      size_t siz = 0;
25      int len;
26      FILE *in = fopen ("./conftest.data", "r");
27      if (!in)
28	return 1;
29      len = getline (&line, &siz, in);
30      exit ((len == 4 && line && strcmp (line, "foo\n") == 0) ? 0 : 1);
31    }
32    ], am_cv_func_working_getline=yes dnl The library version works.
33    , am_cv_func_working_getline=no dnl The library version does NOT work.
34    , am_cv_func_working_getline=no dnl We're cross compiling.
35    )])
36  fi
37
38  if test $am_cv_func_working_getline = no; then
39    AC_LIBOBJ(getline)
40  fi
41])
42