[grub2.git] / m4 / stdio_h.m4

# stdio_h.m4 serial 31
dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.

AC_DEFUN([gl_STDIO_H],
[
  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
  AC_REQUIRE([AC_C_INLINE])
  AC_REQUIRE([gl_ASM_SYMBOL_PREFIX])
  gl_CHECK_NEXT_HEADERS([stdio.h])
  dnl No need to create extra modules for these functions. Everyone who uses
  dnl <stdio.h> likely needs them.
  GNULIB_FPRINTF=1
  GNULIB_PRINTF=1
  GNULIB_VFPRINTF=1
  GNULIB_VPRINTF=1
  GNULIB_FPUTC=1
  GNULIB_PUTC=1
  GNULIB_PUTCHAR=1
  GNULIB_FPUTS=1
  GNULIB_PUTS=1
  GNULIB_FWRITE=1
  dnl This ifdef is just an optimization, to avoid performing a configure
  dnl check whose result is not used. It does not make the test of
  dnl GNULIB_STDIO_H_SIGPIPE or GNULIB_SIGPIPE redundant.
  m4_ifdef([gl_SIGNAL_SIGPIPE], [
    gl_SIGNAL_SIGPIPE
    if test $gl_cv_header_signal_h_SIGPIPE != yes; then
      REPLACE_STDIO_WRITE_FUNCS=1
      AC_LIBOBJ([stdio-write])
    fi
  ])

  dnl Check for declarations of anything we want to poison if the
  dnl corresponding gnulib module is not in use, and which is not
  dnl guaranteed by C89.
  gl_WARN_ON_USE_PREPARE([[#include <stdio.h>
    ]], [dprintf fpurge fseeko ftello getdelim getline popen renameat
    snprintf tmpfile vdprintf vsnprintf])
])

AC_DEFUN([gl_STDIO_MODULE_INDICATOR],
[
  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
  AC_REQUIRE([gl_STDIO_H_DEFAULTS])
  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
  dnl Define it also as a C macro, for the benefit of the unit tests.
  gl_MODULE_INDICATOR_FOR_TESTS([$1])
])

AC_DEFUN([gl_STDIO_H_DEFAULTS],
[
  GNULIB_DPRINTF=0;              AC_SUBST([GNULIB_DPRINTF])
  GNULIB_FCLOSE=0;               AC_SUBST([GNULIB_FCLOSE])
  GNULIB_FFLUSH=0;               AC_SUBST([GNULIB_FFLUSH])
  GNULIB_FOPEN=0;                AC_SUBST([GNULIB_FOPEN])
  GNULIB_FPRINTF=0;              AC_SUBST([GNULIB_FPRINTF])
  GNULIB_FPRINTF_POSIX=0;        AC_SUBST([GNULIB_FPRINTF_POSIX])
  GNULIB_FPURGE=0;               AC_SUBST([GNULIB_FPURGE])
  GNULIB_FPUTC=0;                AC_SUBST([GNULIB_FPUTC])
  GNULIB_FPUTS=0;                AC_SUBST([GNULIB_FPUTS])
  GNULIB_FREOPEN=0;              AC_SUBST([GNULIB_FREOPEN])
  GNULIB_FSEEK=0;                AC_SUBST([GNULIB_FSEEK])
  GNULIB_FSEEKO=0;               AC_SUBST([GNULIB_FSEEKO])
  GNULIB_FTELL=0;                AC_SUBST([GNULIB_FTELL])
  GNULIB_FTELLO=0;               AC_SUBST([GNULIB_FTELLO])
  GNULIB_FWRITE=0;               AC_SUBST([GNULIB_FWRITE])
  GNULIB_GETDELIM=0;             AC_SUBST([GNULIB_GETDELIM])
  GNULIB_GETLINE=0;              AC_SUBST([GNULIB_GETLINE])
  GNULIB_OBSTACK_PRINTF=0;       AC_SUBST([GNULIB_OBSTACK_PRINTF])
  GNULIB_OBSTACK_PRINTF_POSIX=0; AC_SUBST([GNULIB_OBSTACK_PRINTF_POSIX])
  GNULIB_PERROR=0;               AC_SUBST([GNULIB_PERROR])
  GNULIB_POPEN=0;                AC_SUBST([GNULIB_POPEN])
  GNULIB_PRINTF=0;               AC_SUBST([GNULIB_PRINTF])
  GNULIB_PRINTF_POSIX=0;         AC_SUBST([GNULIB_PRINTF_POSIX])
  GNULIB_PUTC=0;                 AC_SUBST([GNULIB_PUTC])
  GNULIB_PUTCHAR=0;              AC_SUBST([GNULIB_PUTCHAR])
  GNULIB_PUTS=0;                 AC_SUBST([GNULIB_PUTS])
  GNULIB_REMOVE=0;               AC_SUBST([GNULIB_REMOVE])
  GNULIB_RENAME=0;               AC_SUBST([GNULIB_RENAME])
  GNULIB_RENAMEAT=0;             AC_SUBST([GNULIB_RENAMEAT])
  GNULIB_SNPRINTF=0;             AC_SUBST([GNULIB_SNPRINTF])
  GNULIB_SPRINTF_POSIX=0;        AC_SUBST([GNULIB_SPRINTF_POSIX])
  GNULIB_STDIO_H_SIGPIPE=0;      AC_SUBST([GNULIB_STDIO_H_SIGPIPE])
  GNULIB_TMPFILE=0;              AC_SUBST([GNULIB_TMPFILE])
  GNULIB_VASPRINTF=0;            AC_SUBST([GNULIB_VASPRINTF])
  GNULIB_VDPRINTF=0;             AC_SUBST([GNULIB_VDPRINTF])
  GNULIB_VFPRINTF=0;             AC_SUBST([GNULIB_VFPRINTF])
  GNULIB_VFPRINTF_POSIX=0;       AC_SUBST([GNULIB_VFPRINTF_POSIX])
  GNULIB_VPRINTF=0;              AC_SUBST([GNULIB_VPRINTF])
  GNULIB_VPRINTF_POSIX=0;        AC_SUBST([GNULIB_VPRINTF_POSIX])
  GNULIB_VSNPRINTF=0;            AC_SUBST([GNULIB_VSNPRINTF])
  GNULIB_VSPRINTF_POSIX=0;       AC_SUBST([GNULIB_VSPRINTF_POSIX])
  dnl Assume proper GNU behavior unless another module says otherwise.
  HAVE_DECL_FPURGE=1;            AC_SUBST([HAVE_DECL_FPURGE])
  HAVE_DECL_GETDELIM=1;          AC_SUBST([HAVE_DECL_GETDELIM])
  HAVE_DECL_GETLINE=1;           AC_SUBST([HAVE_DECL_GETLINE])
  HAVE_DECL_OBSTACK_PRINTF=1;    AC_SUBST([HAVE_DECL_OBSTACK_PRINTF])
  HAVE_DECL_SNPRINTF=1;          AC_SUBST([HAVE_DECL_SNPRINTF])
  HAVE_DECL_VSNPRINTF=1;         AC_SUBST([HAVE_DECL_VSNPRINTF])
  HAVE_DPRINTF=1;                AC_SUBST([HAVE_DPRINTF])
  HAVE_FSEEKO=1;                 AC_SUBST([HAVE_FSEEKO])
  HAVE_FTELLO=1;                 AC_SUBST([HAVE_FTELLO])
  HAVE_RENAMEAT=1;               AC_SUBST([HAVE_RENAMEAT])
  HAVE_VASPRINTF=1;              AC_SUBST([HAVE_VASPRINTF])
  HAVE_VDPRINTF=1;               AC_SUBST([HAVE_VDPRINTF])
  REPLACE_DPRINTF=0;             AC_SUBST([REPLACE_DPRINTF])
  REPLACE_FCLOSE=0;              AC_SUBST([REPLACE_FCLOSE])
  REPLACE_FFLUSH=0;              AC_SUBST([REPLACE_FFLUSH])
  REPLACE_FOPEN=0;               AC_SUBST([REPLACE_FOPEN])
  REPLACE_FPRINTF=0;             AC_SUBST([REPLACE_FPRINTF])
  REPLACE_FPURGE=0;              AC_SUBST([REPLACE_FPURGE])
  REPLACE_FREOPEN=0;             AC_SUBST([REPLACE_FREOPEN])
  REPLACE_FSEEK=0;               AC_SUBST([REPLACE_FSEEK])
  REPLACE_FSEEKO=0;              AC_SUBST([REPLACE_FSEEKO])
  REPLACE_FTELL=0;               AC_SUBST([REPLACE_FTELL])
  REPLACE_FTELLO=0;              AC_SUBST([REPLACE_FTELLO])
  REPLACE_GETDELIM=0;            AC_SUBST([REPLACE_GETDELIM])
  REPLACE_GETLINE=0;             AC_SUBST([REPLACE_GETLINE])
  REPLACE_OBSTACK_PRINTF=0;      AC_SUBST([REPLACE_OBSTACK_PRINTF])
  REPLACE_PERROR=0;              AC_SUBST([REPLACE_PERROR])
  REPLACE_POPEN=0;               AC_SUBST([REPLACE_POPEN])
  REPLACE_PRINTF=0;              AC_SUBST([REPLACE_PRINTF])
  REPLACE_REMOVE=0;              AC_SUBST([REPLACE_REMOVE])
  REPLACE_RENAME=0;              AC_SUBST([REPLACE_RENAME])
  REPLACE_RENAMEAT=0;            AC_SUBST([REPLACE_RENAMEAT])
  REPLACE_SNPRINTF=0;            AC_SUBST([REPLACE_SNPRINTF])
  REPLACE_SPRINTF=0;             AC_SUBST([REPLACE_SPRINTF])
  REPLACE_STDIO_WRITE_FUNCS=0;   AC_SUBST([REPLACE_STDIO_WRITE_FUNCS])
  REPLACE_TMPFILE=0;             AC_SUBST([REPLACE_TMPFILE])
  REPLACE_VASPRINTF=0;           AC_SUBST([REPLACE_VASPRINTF])
  REPLACE_VDPRINTF=0;            AC_SUBST([REPLACE_VDPRINTF])
  REPLACE_VFPRINTF=0;            AC_SUBST([REPLACE_VFPRINTF])
  REPLACE_VPRINTF=0;             AC_SUBST([REPLACE_VPRINTF])
  REPLACE_VSNPRINTF=0;           AC_SUBST([REPLACE_VSNPRINTF])
  REPLACE_VSPRINTF=0;            AC_SUBST([REPLACE_VSPRINTF])
])

dnl Code shared by fseeko and ftello.  Determine if large files are supported,
dnl but stdin does not start as a large file by default.
AC_DEFUN([gl_STDIN_LARGE_OFFSET],
  [
    AC_CACHE_CHECK([whether stdin defaults to large file offsets],
      [gl_cv_var_stdin_large_offset],
      [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]],
[[#if defined __SL64 && defined __SCLE /* cygwin */
  /* Cygwin 1.5.24 and earlier fail to put stdin in 64-bit mode, making
     fseeko/ftello needlessly fail.  This bug was fixed in 1.5.25, and
     it is easier to do a version check than building a runtime test.  */
# include <cygwin/version.h>
# if CYGWIN_VERSION_DLL_COMBINED < CYGWIN_VERSION_DLL_MAKE_COMBINED (1005, 25)
  choke me
# endif
#endif]])],
        [gl_cv_var_stdin_large_offset=yes],
        [gl_cv_var_stdin_large_offset=no])])
])
Commit	Line	Data
15c69261 YB	1	# stdio_h.m4 serial 31
	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.
	6
	7	AC_DEFUN([gl_STDIO_H],
	8	[
	9	AC_REQUIRE([gl_STDIO_H_DEFAULTS])
	10	AC_REQUIRE([AC_C_INLINE])
	11	AC_REQUIRE([gl_ASM_SYMBOL_PREFIX])
	12	gl_CHECK_NEXT_HEADERS([stdio.h])
	13	dnl No need to create extra modules for these functions. Everyone who uses
	14	dnl <stdio.h> likely needs them.
	15	GNULIB_FPRINTF=1
	16	GNULIB_PRINTF=1
	17	GNULIB_VFPRINTF=1
	18	GNULIB_VPRINTF=1
	19	GNULIB_FPUTC=1
	20	GNULIB_PUTC=1
	21	GNULIB_PUTCHAR=1
	22	GNULIB_FPUTS=1
	23	GNULIB_PUTS=1
	24	GNULIB_FWRITE=1
	25	dnl This ifdef is just an optimization, to avoid performing a configure
	26	dnl check whose result is not used. It does not make the test of
	27	dnl GNULIB_STDIO_H_SIGPIPE or GNULIB_SIGPIPE redundant.
	28	m4_ifdef([gl_SIGNAL_SIGPIPE], [
	29	gl_SIGNAL_SIGPIPE
	30	if test $gl_cv_header_signal_h_SIGPIPE != yes; then
	31	REPLACE_STDIO_WRITE_FUNCS=1
	32	AC_LIBOBJ([stdio-write])
	33	fi
	34	])
	35
	36	dnl Check for declarations of anything we want to poison if the
	37	dnl corresponding gnulib module is not in use, and which is not
	38	dnl guaranteed by C89.
	39	gl_WARN_ON_USE_PREPARE([[#include <stdio.h>
	40	]], [dprintf fpurge fseeko ftello getdelim getline popen renameat
	41	snprintf tmpfile vdprintf vsnprintf])
	42	])
	43
	44	AC_DEFUN([gl_STDIO_MODULE_INDICATOR],
	45	[
	46	dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
	47	AC_REQUIRE([gl_STDIO_H_DEFAULTS])
	48	gl_MODULE_INDICATOR_SET_VARIABLE([$1])
	49	dnl Define it also as a C macro, for the benefit of the unit tests.
	50	gl_MODULE_INDICATOR_FOR_TESTS([$1])
	51	])
	52
	53	AC_DEFUN([gl_STDIO_H_DEFAULTS],
	54	[
	55	GNULIB_DPRINTF=0; AC_SUBST([GNULIB_DPRINTF])
	56	GNULIB_FCLOSE=0; AC_SUBST([GNULIB_FCLOSE])
	57	GNULIB_FFLUSH=0; AC_SUBST([GNULIB_FFLUSH])
	58	GNULIB_FOPEN=0; AC_SUBST([GNULIB_FOPEN])
	59	GNULIB_FPRINTF=0; AC_SUBST([GNULIB_FPRINTF])
	60	GNULIB_FPRINTF_POSIX=0; AC_SUBST([GNULIB_FPRINTF_POSIX])
	61	GNULIB_FPURGE=0; AC_SUBST([GNULIB_FPURGE])
	62	GNULIB_FPUTC=0; AC_SUBST([GNULIB_FPUTC])
	63	GNULIB_FPUTS=0; AC_SUBST([GNULIB_FPUTS])
	64	GNULIB_FREOPEN=0; AC_SUBST([GNULIB_FREOPEN])
65	GNULIB_FSEEK=0; AC_SUBST([GNULIB_FSEEK])
66	GNULIB_FSEEKO=0; AC_SUBST([GNULIB_FSEEKO])
67	GNULIB_FTELL=0; AC_SUBST([GNULIB_FTELL])
68	GNULIB_FTELLO=0; AC_SUBST([GNULIB_FTELLO])
69	GNULIB_FWRITE=0; AC_SUBST([GNULIB_FWRITE])
70	GNULIB_GETDELIM=0; AC_SUBST([GNULIB_GETDELIM])
71	GNULIB_GETLINE=0; AC_SUBST([GNULIB_GETLINE])
72	GNULIB_OBSTACK_PRINTF=0; AC_SUBST([GNULIB_OBSTACK_PRINTF])
73	GNULIB_OBSTACK_PRINTF_POSIX=0; AC_SUBST([GNULIB_OBSTACK_PRINTF_POSIX])
74	GNULIB_PERROR=0; AC_SUBST([GNULIB_PERROR])
75	GNULIB_POPEN=0; AC_SUBST([GNULIB_POPEN])
76	GNULIB_PRINTF=0; AC_SUBST([GNULIB_PRINTF])
77	GNULIB_PRINTF_POSIX=0; AC_SUBST([GNULIB_PRINTF_POSIX])
78	GNULIB_PUTC=0; AC_SUBST([GNULIB_PUTC])
79	GNULIB_PUTCHAR=0; AC_SUBST([GNULIB_PUTCHAR])
80	GNULIB_PUTS=0; AC_SUBST([GNULIB_PUTS])
81	GNULIB_REMOVE=0; AC_SUBST([GNULIB_REMOVE])
82	GNULIB_RENAME=0; AC_SUBST([GNULIB_RENAME])
83	GNULIB_RENAMEAT=0; AC_SUBST([GNULIB_RENAMEAT])
84	GNULIB_SNPRINTF=0; AC_SUBST([GNULIB_SNPRINTF])
85	GNULIB_SPRINTF_POSIX=0; AC_SUBST([GNULIB_SPRINTF_POSIX])
86	GNULIB_STDIO_H_SIGPIPE=0; AC_SUBST([GNULIB_STDIO_H_SIGPIPE])
87	GNULIB_TMPFILE=0; AC_SUBST([GNULIB_TMPFILE])
88	GNULIB_VASPRINTF=0; AC_SUBST([GNULIB_VASPRINTF])
89	GNULIB_VDPRINTF=0; AC_SUBST([GNULIB_VDPRINTF])
90	GNULIB_VFPRINTF=0; AC_SUBST([GNULIB_VFPRINTF])
91	GNULIB_VFPRINTF_POSIX=0; AC_SUBST([GNULIB_VFPRINTF_POSIX])
92	GNULIB_VPRINTF=0; AC_SUBST([GNULIB_VPRINTF])
93	GNULIB_VPRINTF_POSIX=0; AC_SUBST([GNULIB_VPRINTF_POSIX])
94	GNULIB_VSNPRINTF=0; AC_SUBST([GNULIB_VSNPRINTF])
95	GNULIB_VSPRINTF_POSIX=0; AC_SUBST([GNULIB_VSPRINTF_POSIX])
96	dnl Assume proper GNU behavior unless another module says otherwise.
97	HAVE_DECL_FPURGE=1; AC_SUBST([HAVE_DECL_FPURGE])
98	HAVE_DECL_GETDELIM=1; AC_SUBST([HAVE_DECL_GETDELIM])
99	HAVE_DECL_GETLINE=1; AC_SUBST([HAVE_DECL_GETLINE])
100	HAVE_DECL_OBSTACK_PRINTF=1; AC_SUBST([HAVE_DECL_OBSTACK_PRINTF])
101	HAVE_DECL_SNPRINTF=1; AC_SUBST([HAVE_DECL_SNPRINTF])
102	HAVE_DECL_VSNPRINTF=1; AC_SUBST([HAVE_DECL_VSNPRINTF])
103	HAVE_DPRINTF=1; AC_SUBST([HAVE_DPRINTF])
104	HAVE_FSEEKO=1; AC_SUBST([HAVE_FSEEKO])
105	HAVE_FTELLO=1; AC_SUBST([HAVE_FTELLO])
106	HAVE_RENAMEAT=1; AC_SUBST([HAVE_RENAMEAT])
107	HAVE_VASPRINTF=1; AC_SUBST([HAVE_VASPRINTF])
108	HAVE_VDPRINTF=1; AC_SUBST([HAVE_VDPRINTF])
109	REPLACE_DPRINTF=0; AC_SUBST([REPLACE_DPRINTF])
110	REPLACE_FCLOSE=0; AC_SUBST([REPLACE_FCLOSE])
111	REPLACE_FFLUSH=0; AC_SUBST([REPLACE_FFLUSH])
112	REPLACE_FOPEN=0; AC_SUBST([REPLACE_FOPEN])
113	REPLACE_FPRINTF=0; AC_SUBST([REPLACE_FPRINTF])
114	REPLACE_FPURGE=0; AC_SUBST([REPLACE_FPURGE])
115	REPLACE_FREOPEN=0; AC_SUBST([REPLACE_FREOPEN])
116	REPLACE_FSEEK=0; AC_SUBST([REPLACE_FSEEK])
117	REPLACE_FSEEKO=0; AC_SUBST([REPLACE_FSEEKO])
118	REPLACE_FTELL=0; AC_SUBST([REPLACE_FTELL])
119	REPLACE_FTELLO=0; AC_SUBST([REPLACE_FTELLO])
120	REPLACE_GETDELIM=0; AC_SUBST([REPLACE_GETDELIM])
121	REPLACE_GETLINE=0; AC_SUBST([REPLACE_GETLINE])
122	REPLACE_OBSTACK_PRINTF=0; AC_SUBST([REPLACE_OBSTACK_PRINTF])
123	REPLACE_PERROR=0; AC_SUBST([REPLACE_PERROR])
124	REPLACE_POPEN=0; AC_SUBST([REPLACE_POPEN])
125	REPLACE_PRINTF=0; AC_SUBST([REPLACE_PRINTF])
126	REPLACE_REMOVE=0; AC_SUBST([REPLACE_REMOVE])
127	REPLACE_RENAME=0; AC_SUBST([REPLACE_RENAME])
128	REPLACE_RENAMEAT=0; AC_SUBST([REPLACE_RENAMEAT])
129	REPLACE_SNPRINTF=0; AC_SUBST([REPLACE_SNPRINTF])
130	REPLACE_SPRINTF=0; AC_SUBST([REPLACE_SPRINTF])
131	REPLACE_STDIO_WRITE_FUNCS=0; AC_SUBST([REPLACE_STDIO_WRITE_FUNCS])
132	REPLACE_TMPFILE=0; AC_SUBST([REPLACE_TMPFILE])
133	REPLACE_VASPRINTF=0; AC_SUBST([REPLACE_VASPRINTF])
134	REPLACE_VDPRINTF=0; AC_SUBST([REPLACE_VDPRINTF])
135	REPLACE_VFPRINTF=0; AC_SUBST([REPLACE_VFPRINTF])
136	REPLACE_VPRINTF=0; AC_SUBST([REPLACE_VPRINTF])
137	REPLACE_VSNPRINTF=0; AC_SUBST([REPLACE_VSNPRINTF])
138	REPLACE_VSPRINTF=0; AC_SUBST([REPLACE_VSPRINTF])
139	])
140
141	dnl Code shared by fseeko and ftello. Determine if large files are supported,
142	dnl but stdin does not start as a large file by default.
143	AC_DEFUN([gl_STDIN_LARGE_OFFSET],
144	[
145	AC_CACHE_CHECK([whether stdin defaults to large file offsets],
146	[gl_cv_var_stdin_large_offset],
147	[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]],
148	[[#if defined __SL64 && defined __SCLE /* cygwin */
149	/* Cygwin 1.5.24 and earlier fail to put stdin in 64-bit mode, making
150	fseeko/ftello needlessly fail. This bug was fixed in 1.5.25, and
151	it is easier to do a version check than building a runtime test. */
152	# include <cygwin/version.h>
153	# if CYGWIN_VERSION_DLL_COMBINED < CYGWIN_VERSION_DLL_MAKE_COMBINED (1005, 25)
154	choke me
155	# endif
156	#endif]])],
157	[gl_cv_var_stdin_large_offset=yes],
158	[gl_cv_var_stdin_large_offset=no])])
159	])