1 # stdio_h.m4 serial 30
2 dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
7 AC_DEFUN([gl_STDIO_H],
8 [
9 AC_REQUIRE([gl_STDIO_H_DEFAULTS])
10 AC_REQUIRE([AC_C_INLINE])
11 gl_CHECK_NEXT_HEADERS([stdio.h])
12 dnl No need to create extra modules for these functions. Everyone who uses
13 dnl <stdio.h> likely needs them.
14 GNULIB_FPRINTF=1
15 GNULIB_PRINTF=1
16 GNULIB_VFPRINTF=1
17 GNULIB_VPRINTF=1
18 GNULIB_FPUTC=1
19 GNULIB_PUTC=1
20 GNULIB_PUTCHAR=1
21 GNULIB_FPUTS=1
22 GNULIB_PUTS=1
23 GNULIB_FWRITE=1
24 dnl This ifdef is just an optimization, to avoid performing a configure
25 dnl check whose result is not used. It does not make the test of
26 dnl GNULIB_STDIO_H_SIGPIPE or GNULIB_SIGPIPE redundant.
27 m4_ifdef([gl_SIGNAL_SIGPIPE], [
28 gl_SIGNAL_SIGPIPE
29 if test $gl_cv_header_signal_h_SIGPIPE != yes; then
30 REPLACE_STDIO_WRITE_FUNCS=1
31 AC_LIBOBJ([stdio-write])
32 fi
33 ])
35 dnl Check for declarations of anything we want to poison if the
36 dnl corresponding gnulib module is not in use, and which is not
37 dnl guaranteed by C89.
38 gl_WARN_ON_USE_PREPARE([[#include <stdio.h>
39 ]], [dprintf fpurge fseeko ftello getdelim getline popen renameat
40 snprintf tmpfile vdprintf vsnprintf])
41 ])
43 AC_DEFUN([gl_STDIO_MODULE_INDICATOR],
44 [
45 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
46 AC_REQUIRE([gl_STDIO_H_DEFAULTS])
47 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
48 dnl Define it also as a C macro, for the benefit of the unit tests.
49 gl_MODULE_INDICATOR_FOR_TESTS([$1])
50 ])
52 AC_DEFUN([gl_STDIO_H_DEFAULTS],
53 [
54 GNULIB_DPRINTF=0; AC_SUBST([GNULIB_DPRINTF])
55 GNULIB_FCLOSE=0; AC_SUBST([GNULIB_FCLOSE])
56 GNULIB_FFLUSH=0; AC_SUBST([GNULIB_FFLUSH])
57 GNULIB_FOPEN=0; AC_SUBST([GNULIB_FOPEN])
58 GNULIB_FPRINTF=0; AC_SUBST([GNULIB_FPRINTF])
59 GNULIB_FPRINTF_POSIX=0; AC_SUBST([GNULIB_FPRINTF_POSIX])
60 GNULIB_FPURGE=0; AC_SUBST([GNULIB_FPURGE])
61 GNULIB_FPUTC=0; AC_SUBST([GNULIB_FPUTC])
62 GNULIB_FPUTS=0; AC_SUBST([GNULIB_FPUTS])
63 GNULIB_FREOPEN=0; AC_SUBST([GNULIB_FREOPEN])
64 GNULIB_FSEEK=0; AC_SUBST([GNULIB_FSEEK])
65 GNULIB_FSEEKO=0; AC_SUBST([GNULIB_FSEEKO])
66 GNULIB_FTELL=0; AC_SUBST([GNULIB_FTELL])
67 GNULIB_FTELLO=0; AC_SUBST([GNULIB_FTELLO])
68 GNULIB_FWRITE=0; AC_SUBST([GNULIB_FWRITE])
69 GNULIB_GETDELIM=0; AC_SUBST([GNULIB_GETDELIM])
70 GNULIB_GETLINE=0; AC_SUBST([GNULIB_GETLINE])
71 GNULIB_OBSTACK_PRINTF=0; AC_SUBST([GNULIB_OBSTACK_PRINTF])
72 GNULIB_OBSTACK_PRINTF_POSIX=0; AC_SUBST([GNULIB_OBSTACK_PRINTF_POSIX])
73 GNULIB_PERROR=0; AC_SUBST([GNULIB_PERROR])
74 GNULIB_POPEN=0; AC_SUBST([GNULIB_POPEN])
75 GNULIB_PRINTF=0; AC_SUBST([GNULIB_PRINTF])
76 GNULIB_PRINTF_POSIX=0; AC_SUBST([GNULIB_PRINTF_POSIX])
77 GNULIB_PUTC=0; AC_SUBST([GNULIB_PUTC])
78 GNULIB_PUTCHAR=0; AC_SUBST([GNULIB_PUTCHAR])
79 GNULIB_PUTS=0; AC_SUBST([GNULIB_PUTS])
80 GNULIB_REMOVE=0; AC_SUBST([GNULIB_REMOVE])
81 GNULIB_RENAME=0; AC_SUBST([GNULIB_RENAME])
82 GNULIB_RENAMEAT=0; AC_SUBST([GNULIB_RENAMEAT])
83 GNULIB_SNPRINTF=0; AC_SUBST([GNULIB_SNPRINTF])
84 GNULIB_SPRINTF_POSIX=0; AC_SUBST([GNULIB_SPRINTF_POSIX])
85 GNULIB_STDIO_H_SIGPIPE=0; AC_SUBST([GNULIB_STDIO_H_SIGPIPE])
86 GNULIB_TMPFILE=0; AC_SUBST([GNULIB_TMPFILE])
87 GNULIB_VASPRINTF=0; AC_SUBST([GNULIB_VASPRINTF])
88 GNULIB_VDPRINTF=0; AC_SUBST([GNULIB_VDPRINTF])
89 GNULIB_VFPRINTF=0; AC_SUBST([GNULIB_VFPRINTF])
90 GNULIB_VFPRINTF_POSIX=0; AC_SUBST([GNULIB_VFPRINTF_POSIX])
91 GNULIB_VPRINTF=0; AC_SUBST([GNULIB_VPRINTF])
92 GNULIB_VPRINTF_POSIX=0; AC_SUBST([GNULIB_VPRINTF_POSIX])
93 GNULIB_VSNPRINTF=0; AC_SUBST([GNULIB_VSNPRINTF])
94 GNULIB_VSPRINTF_POSIX=0; AC_SUBST([GNULIB_VSPRINTF_POSIX])
95 dnl Assume proper GNU behavior unless another module says otherwise.
96 HAVE_DECL_FPURGE=1; AC_SUBST([HAVE_DECL_FPURGE])
97 HAVE_DECL_GETDELIM=1; AC_SUBST([HAVE_DECL_GETDELIM])
98 HAVE_DECL_GETLINE=1; AC_SUBST([HAVE_DECL_GETLINE])
99 HAVE_DECL_OBSTACK_PRINTF=1; AC_SUBST([HAVE_DECL_OBSTACK_PRINTF])
100 HAVE_DECL_SNPRINTF=1; AC_SUBST([HAVE_DECL_SNPRINTF])
101 HAVE_DECL_VSNPRINTF=1; AC_SUBST([HAVE_DECL_VSNPRINTF])
102 HAVE_DPRINTF=1; AC_SUBST([HAVE_DPRINTF])
103 HAVE_FSEEKO=1; AC_SUBST([HAVE_FSEEKO])
104 HAVE_FTELLO=1; AC_SUBST([HAVE_FTELLO])
105 HAVE_RENAMEAT=1; AC_SUBST([HAVE_RENAMEAT])
106 HAVE_VASPRINTF=1; AC_SUBST([HAVE_VASPRINTF])
107 HAVE_VDPRINTF=1; AC_SUBST([HAVE_VDPRINTF])
108 REPLACE_DPRINTF=0; AC_SUBST([REPLACE_DPRINTF])
109 REPLACE_FCLOSE=0; AC_SUBST([REPLACE_FCLOSE])
110 REPLACE_FFLUSH=0; AC_SUBST([REPLACE_FFLUSH])
111 REPLACE_FOPEN=0; AC_SUBST([REPLACE_FOPEN])
112 REPLACE_FPRINTF=0; AC_SUBST([REPLACE_FPRINTF])
113 REPLACE_FPURGE=0; AC_SUBST([REPLACE_FPURGE])
114 REPLACE_FREOPEN=0; AC_SUBST([REPLACE_FREOPEN])
115 REPLACE_FSEEK=0; AC_SUBST([REPLACE_FSEEK])
116 REPLACE_FSEEKO=0; AC_SUBST([REPLACE_FSEEKO])
117 REPLACE_FTELL=0; AC_SUBST([REPLACE_FTELL])
118 REPLACE_FTELLO=0; AC_SUBST([REPLACE_FTELLO])
119 REPLACE_GETDELIM=0; AC_SUBST([REPLACE_GETDELIM])
120 REPLACE_GETLINE=0; AC_SUBST([REPLACE_GETLINE])
121 REPLACE_OBSTACK_PRINTF=0; AC_SUBST([REPLACE_OBSTACK_PRINTF])
122 REPLACE_PERROR=0; AC_SUBST([REPLACE_PERROR])
123 REPLACE_POPEN=0; AC_SUBST([REPLACE_POPEN])
124 REPLACE_PRINTF=0; AC_SUBST([REPLACE_PRINTF])
125 REPLACE_REMOVE=0; AC_SUBST([REPLACE_REMOVE])
126 REPLACE_RENAME=0; AC_SUBST([REPLACE_RENAME])
127 REPLACE_RENAMEAT=0; AC_SUBST([REPLACE_RENAMEAT])
128 REPLACE_SNPRINTF=0; AC_SUBST([REPLACE_SNPRINTF])
129 REPLACE_SPRINTF=0; AC_SUBST([REPLACE_SPRINTF])
130 REPLACE_STDIO_WRITE_FUNCS=0; AC_SUBST([REPLACE_STDIO_WRITE_FUNCS])
131 REPLACE_TMPFILE=0; AC_SUBST([REPLACE_TMPFILE])
132 REPLACE_VASPRINTF=0; AC_SUBST([REPLACE_VASPRINTF])
133 REPLACE_VDPRINTF=0; AC_SUBST([REPLACE_VDPRINTF])
134 REPLACE_VFPRINTF=0; AC_SUBST([REPLACE_VFPRINTF])
135 REPLACE_VPRINTF=0; AC_SUBST([REPLACE_VPRINTF])
136 REPLACE_VSNPRINTF=0; AC_SUBST([REPLACE_VSNPRINTF])
137 REPLACE_VSPRINTF=0; AC_SUBST([REPLACE_VSPRINTF])
138 ])
140 dnl Code shared by fseeko and ftello. Determine if large files are supported,
141 dnl but stdin does not start as a large file by default.
142 AC_DEFUN([gl_STDIN_LARGE_OFFSET],
143 [
144 AC_CACHE_CHECK([whether stdin defaults to large file offsets],
145 [gl_cv_var_stdin_large_offset],
146 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]],
147 [[#if defined __SL64 && defined __SCLE /* cygwin */
148 /* Cygwin 1.5.24 and earlier fail to put stdin in 64-bit mode, making
149 fseeko/ftello needlessly fail. This bug was fixed in 1.5.25, and
150 it is easier to do a version check than building a runtime test. */
151 # include <cygwin/version.h>
152 # if CYGWIN_VERSION_DLL_COMBINED < CYGWIN_VERSION_DLL_MAKE_COMBINED (1005, 25)
153 choke me
154 # endif
155 #endif]])],
156 [gl_cv_var_stdin_large_offset=yes],
157 [gl_cv_var_stdin_large_offset=no])])
158 ])