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.
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.
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], [
29 if test $gl_cv_header_signal_h_SIGPIPE != yes; then
30 REPLACE_STDIO_WRITE_FUNCS=1
31 AC_LIBOBJ([stdio-write])
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 vdprintf vsnprintf])
43 AC_DEFUN([gl_STDIO_MODULE_INDICATOR],
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])
52 AC_DEFUN([gl_STDIO_H_DEFAULTS],
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_VASPRINTF=0; AC_SUBST([GNULIB_VASPRINTF])
87 GNULIB_VDPRINTF=0; AC_SUBST([GNULIB_VDPRINTF])
88 GNULIB_VFPRINTF=0; AC_SUBST([GNULIB_VFPRINTF])
89 GNULIB_VFPRINTF_POSIX=0; AC_SUBST([GNULIB_VFPRINTF_POSIX])
90 GNULIB_VPRINTF=0; AC_SUBST([GNULIB_VPRINTF])
91 GNULIB_VPRINTF_POSIX=0; AC_SUBST([GNULIB_VPRINTF_POSIX])
92 GNULIB_VSNPRINTF=0; AC_SUBST([GNULIB_VSNPRINTF])
93 GNULIB_VSPRINTF_POSIX=0; AC_SUBST([GNULIB_VSPRINTF_POSIX])
94 dnl Assume proper GNU behavior unless another module says otherwise.
95 HAVE_DECL_FPURGE=1; AC_SUBST([HAVE_DECL_FPURGE])
96 HAVE_DECL_GETDELIM=1; AC_SUBST([HAVE_DECL_GETDELIM])
97 HAVE_DECL_GETLINE=1; AC_SUBST([HAVE_DECL_GETLINE])
98 HAVE_DECL_OBSTACK_PRINTF=1; AC_SUBST([HAVE_DECL_OBSTACK_PRINTF])
99 HAVE_DECL_SNPRINTF=1; AC_SUBST([HAVE_DECL_SNPRINTF])
100 HAVE_DECL_VSNPRINTF=1; AC_SUBST([HAVE_DECL_VSNPRINTF])
101 HAVE_DPRINTF=1; AC_SUBST([HAVE_DPRINTF])
102 HAVE_FSEEKO=1; AC_SUBST([HAVE_FSEEKO])
103 HAVE_FTELLO=1; AC_SUBST([HAVE_FTELLO])
104 HAVE_RENAMEAT=1; AC_SUBST([HAVE_RENAMEAT])
105 HAVE_VASPRINTF=1; AC_SUBST([HAVE_VASPRINTF])
106 HAVE_VDPRINTF=1; AC_SUBST([HAVE_VDPRINTF])
107 REPLACE_DPRINTF=0; AC_SUBST([REPLACE_DPRINTF])
108 REPLACE_FCLOSE=0; AC_SUBST([REPLACE_FCLOSE])
109 REPLACE_FFLUSH=0; AC_SUBST([REPLACE_FFLUSH])
110 REPLACE_FOPEN=0; AC_SUBST([REPLACE_FOPEN])
111 REPLACE_FPRINTF=0; AC_SUBST([REPLACE_FPRINTF])
112 REPLACE_FPURGE=0; AC_SUBST([REPLACE_FPURGE])
113 REPLACE_FREOPEN=0; AC_SUBST([REPLACE_FREOPEN])
114 REPLACE_FSEEK=0; AC_SUBST([REPLACE_FSEEK])
115 REPLACE_FSEEKO=0; AC_SUBST([REPLACE_FSEEKO])
116 REPLACE_FTELL=0; AC_SUBST([REPLACE_FTELL])
117 REPLACE_FTELLO=0; AC_SUBST([REPLACE_FTELLO])
118 REPLACE_GETDELIM=0; AC_SUBST([REPLACE_GETDELIM])
119 REPLACE_GETLINE=0; AC_SUBST([REPLACE_GETLINE])
120 REPLACE_OBSTACK_PRINTF=0; AC_SUBST([REPLACE_OBSTACK_PRINTF])
121 REPLACE_PERROR=0; AC_SUBST([REPLACE_PERROR])
122 REPLACE_POPEN=0; AC_SUBST([REPLACE_POPEN])
123 REPLACE_PRINTF=0; AC_SUBST([REPLACE_PRINTF])
124 REPLACE_REMOVE=0; AC_SUBST([REPLACE_REMOVE])
125 REPLACE_RENAME=0; AC_SUBST([REPLACE_RENAME])
126 REPLACE_RENAMEAT=0; AC_SUBST([REPLACE_RENAMEAT])
127 REPLACE_SNPRINTF=0; AC_SUBST([REPLACE_SNPRINTF])
128 REPLACE_SPRINTF=0; AC_SUBST([REPLACE_SPRINTF])
129 REPLACE_STDIO_WRITE_FUNCS=0; AC_SUBST([REPLACE_STDIO_WRITE_FUNCS])
130 REPLACE_VASPRINTF=0; AC_SUBST([REPLACE_VASPRINTF])
131 REPLACE_VDPRINTF=0; AC_SUBST([REPLACE_VDPRINTF])
132 REPLACE_VFPRINTF=0; AC_SUBST([REPLACE_VFPRINTF])
133 REPLACE_VPRINTF=0; AC_SUBST([REPLACE_VPRINTF])
134 REPLACE_VSNPRINTF=0; AC_SUBST([REPLACE_VSNPRINTF])
135 REPLACE_VSPRINTF=0; AC_SUBST([REPLACE_VSPRINTF])
138 dnl Code shared by fseeko and ftello. Determine if large files are supported,
139 dnl but stdin does not start as a large file by default.
140 AC_DEFUN([gl_STDIN_LARGE_OFFSET],
142 AC_CACHE_CHECK([whether stdin defaults to large file offsets],
143 [gl_cv_var_stdin_large_offset],
144 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]],
145 [[#if defined __SL64 && defined __SCLE /* cygwin */
146 /* Cygwin 1.5.24 and earlier fail to put stdin in 64-bit mode, making
147 fseeko/ftello needlessly fail. This bug was fixed in 1.5.25, and
148 it is easier to do a version check than building a runtime test. */
149 # include <cygwin/version.h>
150 # if CYGWIN_VERSION_DLL_COMBINED < CYGWIN_VERSION_DLL_MAKE_COMBINED (1005, 25)
154 [gl_cv_var_stdin_large_offset=yes],
155 [gl_cv_var_stdin_large_offset=no])])