m4/stdio_h.m4

   1 # stdio_h.m4 serial 32
   2 dnl Copyright (C) 2007-2011 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_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_FSEEKO=1;            AC_SUBST([HAVE_DECL_FSEEKO])
  99   HAVE_DECL_FTELLO=1;            AC_SUBST([HAVE_DECL_FTELLO])
 100   HAVE_DECL_GETDELIM=1;          AC_SUBST([HAVE_DECL_GETDELIM])
 101   HAVE_DECL_GETLINE=1;           AC_SUBST([HAVE_DECL_GETLINE])
 102   HAVE_DECL_OBSTACK_PRINTF=1;    AC_SUBST([HAVE_DECL_OBSTACK_PRINTF])
 103   HAVE_DECL_SNPRINTF=1;          AC_SUBST([HAVE_DECL_SNPRINTF])
 104   HAVE_DECL_VSNPRINTF=1;         AC_SUBST([HAVE_DECL_VSNPRINTF])
 105   HAVE_DPRINTF=1;                AC_SUBST([HAVE_DPRINTF])
 106   HAVE_FSEEKO=1;                 AC_SUBST([HAVE_FSEEKO])
 107   HAVE_FTELLO=1;                 AC_SUBST([HAVE_FTELLO])
 108   HAVE_RENAMEAT=1;               AC_SUBST([HAVE_RENAMEAT])
 109   HAVE_VASPRINTF=1;              AC_SUBST([HAVE_VASPRINTF])
 110   HAVE_VDPRINTF=1;               AC_SUBST([HAVE_VDPRINTF])
 111   REPLACE_DPRINTF=0;             AC_SUBST([REPLACE_DPRINTF])
 112   REPLACE_FCLOSE=0;              AC_SUBST([REPLACE_FCLOSE])
 113   REPLACE_FFLUSH=0;              AC_SUBST([REPLACE_FFLUSH])
 114   REPLACE_FOPEN=0;               AC_SUBST([REPLACE_FOPEN])
 115   REPLACE_FPRINTF=0;             AC_SUBST([REPLACE_FPRINTF])
 116   REPLACE_FPURGE=0;              AC_SUBST([REPLACE_FPURGE])
 117   REPLACE_FREOPEN=0;             AC_SUBST([REPLACE_FREOPEN])
 118   REPLACE_FSEEK=0;               AC_SUBST([REPLACE_FSEEK])
 119   REPLACE_FSEEKO=0;              AC_SUBST([REPLACE_FSEEKO])
 120   REPLACE_FTELL=0;               AC_SUBST([REPLACE_FTELL])
 121   REPLACE_FTELLO=0;              AC_SUBST([REPLACE_FTELLO])
 122   REPLACE_GETDELIM=0;            AC_SUBST([REPLACE_GETDELIM])
 123   REPLACE_GETLINE=0;             AC_SUBST([REPLACE_GETLINE])
 124   REPLACE_OBSTACK_PRINTF=0;      AC_SUBST([REPLACE_OBSTACK_PRINTF])
 125   REPLACE_PERROR=0;              AC_SUBST([REPLACE_PERROR])
 126   REPLACE_POPEN=0;               AC_SUBST([REPLACE_POPEN])
 127   REPLACE_PRINTF=0;              AC_SUBST([REPLACE_PRINTF])
 128   REPLACE_REMOVE=0;              AC_SUBST([REPLACE_REMOVE])
 129   REPLACE_RENAME=0;              AC_SUBST([REPLACE_RENAME])
 130   REPLACE_RENAMEAT=0;            AC_SUBST([REPLACE_RENAMEAT])
 131   REPLACE_SNPRINTF=0;            AC_SUBST([REPLACE_SNPRINTF])
 132   REPLACE_SPRINTF=0;             AC_SUBST([REPLACE_SPRINTF])
 133   REPLACE_STDIO_WRITE_FUNCS=0;   AC_SUBST([REPLACE_STDIO_WRITE_FUNCS])
 134   REPLACE_TMPFILE=0;             AC_SUBST([REPLACE_TMPFILE])
 135   REPLACE_VASPRINTF=0;           AC_SUBST([REPLACE_VASPRINTF])
 136   REPLACE_VDPRINTF=0;            AC_SUBST([REPLACE_VDPRINTF])
 137   REPLACE_VFPRINTF=0;            AC_SUBST([REPLACE_VFPRINTF])
 138   REPLACE_VPRINTF=0;             AC_SUBST([REPLACE_VPRINTF])
 139   REPLACE_VSNPRINTF=0;           AC_SUBST([REPLACE_VSNPRINTF])
 140   REPLACE_VSPRINTF=0;            AC_SUBST([REPLACE_VSPRINTF])
 141 ])
 142
 143 dnl Code shared by fseeko and ftello.  Determine if large files are supported,
 144 dnl but stdin does not start as a large file by default.
 145 AC_DEFUN([gl_STDIN_LARGE_OFFSET],
 146   [
 147     AC_CACHE_CHECK([whether stdin defaults to large file offsets],
 148       [gl_cv_var_stdin_large_offset],
 149       [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]],
 150 [[#if defined __SL64 && defined __SCLE /* cygwin */
 151   /* Cygwin 1.5.24 and earlier fail to put stdin in 64-bit mode, making
 152      fseeko/ftello needlessly fail.  This bug was fixed in 1.5.25, and
 153      it is easier to do a version check than building a runtime test.  */
 154 # include <cygwin/version.h>
 155 # if CYGWIN_VERSION_DLL_COMBINED < CYGWIN_VERSION_DLL_MAKE_COMBINED (1005, 25)
 156   choke me
 157 # endif
 158 #endif]])],
 159         [gl_cv_var_stdin_large_offset=yes],
 160         [gl_cv_var_stdin_large_offset=no])])
 161 ])