1# stdio_h.m4 serial 6
2dnl Copyright (C) 2007 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7AC_DEFUN([gl_STDIO_H],
8[
9  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
10  gl_ABSOLUTE_HEADER([stdio.h])
11  ABSOLUTE_STDIO_H=\"$gl_cv_absolute_stdio_h\"
12  AC_SUBST([ABSOLUTE_STDIO_H])
13])
14
15AC_DEFUN([gl_STDIO_MODULE_INDICATOR],
16[
17  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
18  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
19  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
20])
21
22AC_DEFUN([gl_STDIO_H_DEFAULTS],
23[
24  GNULIB_FPRINTF_POSIX=0;  AC_SUBST([GNULIB_FPRINTF_POSIX])
25  GNULIB_PRINTF_POSIX=0;   AC_SUBST([GNULIB_PRINTF_POSIX])
26  GNULIB_SNPRINTF=0;       AC_SUBST([GNULIB_SNPRINTF])
27  GNULIB_SPRINTF_POSIX=0;  AC_SUBST([GNULIB_SPRINTF_POSIX])
28  GNULIB_VFPRINTF_POSIX=0; AC_SUBST([GNULIB_VFPRINTF_POSIX])
29  GNULIB_VPRINTF_POSIX=0;  AC_SUBST([GNULIB_VPRINTF_POSIX])
30  GNULIB_VSNPRINTF=0;      AC_SUBST([GNULIB_VSNPRINTF])
31  GNULIB_VSPRINTF_POSIX=0; AC_SUBST([GNULIB_VSPRINTF_POSIX])
32  GNULIB_VASPRINTF=0;      AC_SUBST([GNULIB_VASPRINTF])
33  GNULIB_FSEEK=0;          AC_SUBST([GNULIB_FSEEK])
34  GNULIB_FSEEKO=0;         AC_SUBST([GNULIB_FSEEKO])
35  GNULIB_FTELL=0;          AC_SUBST([GNULIB_FTELL])
36  GNULIB_FTELLO=0;         AC_SUBST([GNULIB_FTELLO])
37  GNULIB_FFLUSH=0;         AC_SUBST([GNULIB_FFLUSH])
38  dnl Assume proper GNU behavior unless another module says otherwise.
39  REPLACE_FPRINTF=0;       AC_SUBST([REPLACE_FPRINTF])
40  REPLACE_VFPRINTF=0;      AC_SUBST([REPLACE_VFPRINTF])
41  REPLACE_PRINTF=0;        AC_SUBST([REPLACE_PRINTF])
42  REPLACE_VPRINTF=0;       AC_SUBST([REPLACE_VPRINTF])
43  REPLACE_SNPRINTF=0;      AC_SUBST([REPLACE_SNPRINTF])
44  HAVE_DECL_SNPRINTF=1;    AC_SUBST([HAVE_DECL_SNPRINTF])
45  REPLACE_VSNPRINTF=0;     AC_SUBST([REPLACE_VSNPRINTF])
46  HAVE_DECL_VSNPRINTF=1;   AC_SUBST([HAVE_DECL_VSNPRINTF])
47  REPLACE_SPRINTF=0;       AC_SUBST([REPLACE_SPRINTF])
48  REPLACE_VSPRINTF=0;      AC_SUBST([REPLACE_VSPRINTF])
49  HAVE_VASPRINTF=1;        AC_SUBST([HAVE_VASPRINTF])
50  REPLACE_VASPRINTF=0;     AC_SUBST([REPLACE_VASPRINTF])
51  HAVE_FSEEKO=1;           AC_SUBST([HAVE_FSEEKO])
52  REPLACE_FSEEKO=0;        AC_SUBST([REPLACE_FSEEKO])
53  REPLACE_FSEEK=0;         AC_SUBST([REPLACE_FSEEK])
54  HAVE_FTELLO=1;           AC_SUBST([HAVE_FTELLO])
55  REPLACE_FTELLO=0;        AC_SUBST([REPLACE_FTELLO])
56  REPLACE_FTELL=0;         AC_SUBST([REPLACE_FTELL])
57  REPLACE_FFLUSH=0;        AC_SUBST([REPLACE_FFLUSH])
58])
59
60dnl Code shared by fseeko and ftello.  Determine if large files are supported,
61dnl but stdin does not start as a large file by default.
62AC_DEFUN([gl_STDIN_LARGE_OFFSET],
63  [
64    AC_CACHE_CHECK([whether stdin defaults to large file offsets],
65      [gl_cv_var_stdin_large_offset],
66      [AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <stdio.h>],
67[#if defined __SL64 && defined __SCLE /* cygwin */
68  /* Cygwin 1.5.24 and earlier fail to put stdin in 64-bit mode, making
69     fseeko/ftello needlessly fail.  This bug was fixed at the same time
70     that cygwin started exporting asnprintf (cygwin 1.7.0), so we use
71     that as a link-time test for cross-compiles rather than building
72     a runtime test.  */
73  size_t s;
74  if (asnprintf (NULL, &s, ""))
75    return 0;
76#endif])],
77	[gl_cv_var_stdin_large_offset=yes],
78	[gl_cv_var_stdin_large_offset=no])])
79])
80