gnulib/import/m4/stdio_h.m4

   1 # stdio_h.m4 serial 48
   2 dnl Copyright (C) 2007-2016 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   AH_VERBATIM([MINGW_ANSI_STDIO],
  10 [/* Use GNU style printf and scanf.  */
  11 #ifndef __USE_MINGW_ANSI_STDIO
  12 # undef __USE_MINGW_ANSI_STDIO
  13 #endif
  14 ])
  15   AC_DEFINE([__USE_MINGW_ANSI_STDIO])
  16   AC_REQUIRE([gl_STDIO_H_DEFAULTS])
  17   gl_NEXT_HEADERS([stdio.h])
  18
  19   dnl Determine whether __USE_MINGW_ANSI_STDIO makes printf and
  20   dnl inttypes.h behave like gnu instead of system; we must give our
  21   dnl printf wrapper the right attribute to match.
  22   AC_CACHE_CHECK([which flavor of printf attribute matches inttypes macros],
  23     [gl_cv_func_printf_attribute_flavor],
  24     [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  25        #define __STDC_FORMAT_MACROS 1
  26        #include <stdio.h>
  27        #include <inttypes.h>
  28        /* For non-mingw systems, compilation will trivially succeed.
  29           For mingw, compilation will succeed for older mingw (system
  30           printf, "I64d") and fail for newer mingw (gnu printf, "lld"). */
  31        #if ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__) && \
  32          (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4))
  33        extern char PRIdMAX_probe[sizeof PRIdMAX == sizeof "I64d" ? 1 : -1];
  34        #endif
  35       ]])], [gl_cv_func_printf_attribute_flavor=system],
  36       [gl_cv_func_printf_attribute_flavor=gnu])])
  37   if test "$gl_cv_func_printf_attribute_flavor" = gnu; then
  38     AC_DEFINE([GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU], [1],
  39       [Define to 1 if printf and friends should be labeled with
  40        attribute "__gnu_printf__" instead of "__printf__"])
  41   fi
  42
  43   dnl No need to create extra modules for these functions. Everyone who uses
  44   dnl <stdio.h> likely needs them.
  45   GNULIB_FSCANF=1
  46   gl_MODULE_INDICATOR([fscanf])
  47   GNULIB_SCANF=1
  48   gl_MODULE_INDICATOR([scanf])
  49   GNULIB_FGETC=1
  50   GNULIB_GETC=1
  51   GNULIB_GETCHAR=1
  52   GNULIB_FGETS=1
  53   GNULIB_FREAD=1
  54   dnl This ifdef is necessary to avoid an error "missing file lib/stdio-read.c"
  55   dnl "expected source file, required through AC_LIBSOURCES, not found". It is
  56   dnl also an optimization, to avoid performing a configure check whose result
  57   dnl is not used. But it does not make the test of GNULIB_STDIO_H_NONBLOCKING
  58   dnl or GNULIB_NONBLOCKING redundant.
  59   m4_ifdef([gl_NONBLOCKING_IO], [
  60     gl_NONBLOCKING_IO
  61     if test $gl_cv_have_nonblocking != yes; then
  62       REPLACE_STDIO_READ_FUNCS=1
  63       AC_LIBOBJ([stdio-read])
  64     fi
  65   ])
  66
  67   dnl No need to create extra modules for these functions. Everyone who uses
  68   dnl <stdio.h> likely needs them.
  69   GNULIB_FPRINTF=1
  70   GNULIB_PRINTF=1
  71   GNULIB_VFPRINTF=1
  72   GNULIB_VPRINTF=1
  73   GNULIB_FPUTC=1
  74   GNULIB_PUTC=1
  75   GNULIB_PUTCHAR=1
  76   GNULIB_FPUTS=1
  77   GNULIB_PUTS=1
  78   GNULIB_FWRITE=1
  79   dnl This ifdef is necessary to avoid an error "missing file lib/stdio-write.c"
  80   dnl "expected source file, required through AC_LIBSOURCES, not found". It is
  81   dnl also an optimization, to avoid performing a configure check whose result
  82   dnl is not used. But it does not make the test of GNULIB_STDIO_H_SIGPIPE or
  83   dnl GNULIB_SIGPIPE redundant.
  84   m4_ifdef([gl_SIGNAL_SIGPIPE], [
  85     gl_SIGNAL_SIGPIPE
  86     if test $gl_cv_header_signal_h_SIGPIPE != yes; then
  87       REPLACE_STDIO_WRITE_FUNCS=1
  88       AC_LIBOBJ([stdio-write])
  89     fi
  90   ])
  91   dnl This ifdef is necessary to avoid an error "missing file lib/stdio-write.c"
  92   dnl "expected source file, required through AC_LIBSOURCES, not found". It is
  93   dnl also an optimization, to avoid performing a configure check whose result
  94   dnl is not used. But it does not make the test of GNULIB_STDIO_H_NONBLOCKING
  95   dnl or GNULIB_NONBLOCKING redundant.
  96   m4_ifdef([gl_NONBLOCKING_IO], [
  97     gl_NONBLOCKING_IO
  98     if test $gl_cv_have_nonblocking != yes; then
  99       REPLACE_STDIO_WRITE_FUNCS=1
 100       AC_LIBOBJ([stdio-write])
 101     fi
 102   ])
 103
 104   dnl Check for declarations of anything we want to poison if the
 105   dnl corresponding gnulib module is not in use, and which is not
 106   dnl guaranteed by both C89 and C11.
 107   gl_WARN_ON_USE_PREPARE([[#include <stdio.h>
 108     ]], [dprintf fpurge fseeko ftello getdelim getline gets pclose popen
 109     renameat snprintf tmpfile vdprintf vsnprintf])
 110 ])
 111
 112 AC_DEFUN([gl_STDIO_MODULE_INDICATOR],
 113 [
 114   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
 115   AC_REQUIRE([gl_STDIO_H_DEFAULTS])
 116   gl_MODULE_INDICATOR_SET_VARIABLE([$1])
 117   dnl Define it also as a C macro, for the benefit of the unit tests.
 118   gl_MODULE_INDICATOR_FOR_TESTS([$1])
 119 ])
 120
 121 AC_DEFUN([gl_STDIO_H_DEFAULTS],
 122 [
 123   GNULIB_DPRINTF=0;              AC_SUBST([GNULIB_DPRINTF])
 124   GNULIB_FCLOSE=0;               AC_SUBST([GNULIB_FCLOSE])
 125   GNULIB_FDOPEN=0;               AC_SUBST([GNULIB_FDOPEN])
 126   GNULIB_FFLUSH=0;               AC_SUBST([GNULIB_FFLUSH])
 127   GNULIB_FGETC=0;                AC_SUBST([GNULIB_FGETC])
 128   GNULIB_FGETS=0;                AC_SUBST([GNULIB_FGETS])
 129   GNULIB_FOPEN=0;                AC_SUBST([GNULIB_FOPEN])
 130   GNULIB_FPRINTF=0;              AC_SUBST([GNULIB_FPRINTF])
 131   GNULIB_FPRINTF_POSIX=0;        AC_SUBST([GNULIB_FPRINTF_POSIX])
 132   GNULIB_FPURGE=0;               AC_SUBST([GNULIB_FPURGE])
 133   GNULIB_FPUTC=0;                AC_SUBST([GNULIB_FPUTC])
 134   GNULIB_FPUTS=0;                AC_SUBST([GNULIB_FPUTS])
 135   GNULIB_FREAD=0;                AC_SUBST([GNULIB_FREAD])
 136   GNULIB_FREOPEN=0;              AC_SUBST([GNULIB_FREOPEN])
 137   GNULIB_FSCANF=0;               AC_SUBST([GNULIB_FSCANF])
 138   GNULIB_FSEEK=0;                AC_SUBST([GNULIB_FSEEK])
 139   GNULIB_FSEEKO=0;               AC_SUBST([GNULIB_FSEEKO])
 140   GNULIB_FTELL=0;                AC_SUBST([GNULIB_FTELL])
 141   GNULIB_FTELLO=0;               AC_SUBST([GNULIB_FTELLO])
 142   GNULIB_FWRITE=0;               AC_SUBST([GNULIB_FWRITE])
 143   GNULIB_GETC=0;                 AC_SUBST([GNULIB_GETC])
 144   GNULIB_GETCHAR=0;              AC_SUBST([GNULIB_GETCHAR])
 145   GNULIB_GETDELIM=0;             AC_SUBST([GNULIB_GETDELIM])
 146   GNULIB_GETLINE=0;              AC_SUBST([GNULIB_GETLINE])
 147   GNULIB_OBSTACK_PRINTF=0;       AC_SUBST([GNULIB_OBSTACK_PRINTF])
 148   GNULIB_OBSTACK_PRINTF_POSIX=0; AC_SUBST([GNULIB_OBSTACK_PRINTF_POSIX])
 149   GNULIB_PCLOSE=0;               AC_SUBST([GNULIB_PCLOSE])
 150   GNULIB_PERROR=0;               AC_SUBST([GNULIB_PERROR])
 151   GNULIB_POPEN=0;                AC_SUBST([GNULIB_POPEN])
 152   GNULIB_PRINTF=0;               AC_SUBST([GNULIB_PRINTF])
 153   GNULIB_PRINTF_POSIX=0;         AC_SUBST([GNULIB_PRINTF_POSIX])
 154   GNULIB_PUTC=0;                 AC_SUBST([GNULIB_PUTC])
 155   GNULIB_PUTCHAR=0;              AC_SUBST([GNULIB_PUTCHAR])
 156   GNULIB_PUTS=0;                 AC_SUBST([GNULIB_PUTS])
 157   GNULIB_REMOVE=0;               AC_SUBST([GNULIB_REMOVE])
 158   GNULIB_RENAME=0;               AC_SUBST([GNULIB_RENAME])
 159   GNULIB_RENAMEAT=0;             AC_SUBST([GNULIB_RENAMEAT])
 160   GNULIB_SCANF=0;                AC_SUBST([GNULIB_SCANF])
 161   GNULIB_SNPRINTF=0;             AC_SUBST([GNULIB_SNPRINTF])
 162   GNULIB_SPRINTF_POSIX=0;        AC_SUBST([GNULIB_SPRINTF_POSIX])
 163   GNULIB_STDIO_H_NONBLOCKING=0;  AC_SUBST([GNULIB_STDIO_H_NONBLOCKING])
 164   GNULIB_STDIO_H_SIGPIPE=0;      AC_SUBST([GNULIB_STDIO_H_SIGPIPE])
 165   GNULIB_TMPFILE=0;              AC_SUBST([GNULIB_TMPFILE])
 166   GNULIB_VASPRINTF=0;            AC_SUBST([GNULIB_VASPRINTF])
 167   GNULIB_VFSCANF=0;              AC_SUBST([GNULIB_VFSCANF])
 168   GNULIB_VSCANF=0;               AC_SUBST([GNULIB_VSCANF])
 169   GNULIB_VDPRINTF=0;             AC_SUBST([GNULIB_VDPRINTF])
 170   GNULIB_VFPRINTF=0;             AC_SUBST([GNULIB_VFPRINTF])
 171   GNULIB_VFPRINTF_POSIX=0;       AC_SUBST([GNULIB_VFPRINTF_POSIX])
 172   GNULIB_VPRINTF=0;              AC_SUBST([GNULIB_VPRINTF])
 173   GNULIB_VPRINTF_POSIX=0;        AC_SUBST([GNULIB_VPRINTF_POSIX])
 174   GNULIB_VSNPRINTF=0;            AC_SUBST([GNULIB_VSNPRINTF])
 175   GNULIB_VSPRINTF_POSIX=0;       AC_SUBST([GNULIB_VSPRINTF_POSIX])
 176   dnl Assume proper GNU behavior unless another module says otherwise.
 177   HAVE_DECL_FPURGE=1;            AC_SUBST([HAVE_DECL_FPURGE])
 178   HAVE_DECL_FSEEKO=1;            AC_SUBST([HAVE_DECL_FSEEKO])
 179   HAVE_DECL_FTELLO=1;            AC_SUBST([HAVE_DECL_FTELLO])
 180   HAVE_DECL_GETDELIM=1;          AC_SUBST([HAVE_DECL_GETDELIM])
 181   HAVE_DECL_GETLINE=1;           AC_SUBST([HAVE_DECL_GETLINE])
 182   HAVE_DECL_OBSTACK_PRINTF=1;    AC_SUBST([HAVE_DECL_OBSTACK_PRINTF])
 183   HAVE_DECL_SNPRINTF=1;          AC_SUBST([HAVE_DECL_SNPRINTF])
 184   HAVE_DECL_VSNPRINTF=1;         AC_SUBST([HAVE_DECL_VSNPRINTF])
 185   HAVE_DPRINTF=1;                AC_SUBST([HAVE_DPRINTF])
 186   HAVE_FSEEKO=1;                 AC_SUBST([HAVE_FSEEKO])
 187   HAVE_FTELLO=1;                 AC_SUBST([HAVE_FTELLO])
 188   HAVE_PCLOSE=1;                 AC_SUBST([HAVE_PCLOSE])
 189   HAVE_POPEN=1;                  AC_SUBST([HAVE_POPEN])
 190   HAVE_RENAMEAT=1;               AC_SUBST([HAVE_RENAMEAT])
 191   HAVE_VASPRINTF=1;              AC_SUBST([HAVE_VASPRINTF])
 192   HAVE_VDPRINTF=1;               AC_SUBST([HAVE_VDPRINTF])
 193   REPLACE_DPRINTF=0;             AC_SUBST([REPLACE_DPRINTF])
 194   REPLACE_FCLOSE=0;              AC_SUBST([REPLACE_FCLOSE])
 195   REPLACE_FDOPEN=0;              AC_SUBST([REPLACE_FDOPEN])
 196   REPLACE_FFLUSH=0;              AC_SUBST([REPLACE_FFLUSH])
 197   REPLACE_FOPEN=0;               AC_SUBST([REPLACE_FOPEN])
 198   REPLACE_FPRINTF=0;             AC_SUBST([REPLACE_FPRINTF])
 199   REPLACE_FPURGE=0;              AC_SUBST([REPLACE_FPURGE])
 200   REPLACE_FREOPEN=0;             AC_SUBST([REPLACE_FREOPEN])
 201   REPLACE_FSEEK=0;               AC_SUBST([REPLACE_FSEEK])
 202   REPLACE_FSEEKO=0;              AC_SUBST([REPLACE_FSEEKO])
 203   REPLACE_FTELL=0;               AC_SUBST([REPLACE_FTELL])
 204   REPLACE_FTELLO=0;              AC_SUBST([REPLACE_FTELLO])
 205   REPLACE_GETDELIM=0;            AC_SUBST([REPLACE_GETDELIM])
 206   REPLACE_GETLINE=0;             AC_SUBST([REPLACE_GETLINE])
 207   REPLACE_OBSTACK_PRINTF=0;      AC_SUBST([REPLACE_OBSTACK_PRINTF])
 208   REPLACE_PERROR=0;              AC_SUBST([REPLACE_PERROR])
 209   REPLACE_POPEN=0;               AC_SUBST([REPLACE_POPEN])
 210   REPLACE_PRINTF=0;              AC_SUBST([REPLACE_PRINTF])
 211   REPLACE_REMOVE=0;              AC_SUBST([REPLACE_REMOVE])
 212   REPLACE_RENAME=0;              AC_SUBST([REPLACE_RENAME])
 213   REPLACE_RENAMEAT=0;            AC_SUBST([REPLACE_RENAMEAT])
 214   REPLACE_SNPRINTF=0;            AC_SUBST([REPLACE_SNPRINTF])
 215   REPLACE_SPRINTF=0;             AC_SUBST([REPLACE_SPRINTF])
 216   REPLACE_STDIO_READ_FUNCS=0;    AC_SUBST([REPLACE_STDIO_READ_FUNCS])
 217   REPLACE_STDIO_WRITE_FUNCS=0;   AC_SUBST([REPLACE_STDIO_WRITE_FUNCS])
 218   REPLACE_TMPFILE=0;             AC_SUBST([REPLACE_TMPFILE])
 219   REPLACE_VASPRINTF=0;           AC_SUBST([REPLACE_VASPRINTF])
 220   REPLACE_VDPRINTF=0;            AC_SUBST([REPLACE_VDPRINTF])
 221   REPLACE_VFPRINTF=0;            AC_SUBST([REPLACE_VFPRINTF])
 222   REPLACE_VPRINTF=0;             AC_SUBST([REPLACE_VPRINTF])
 223   REPLACE_VSNPRINTF=0;           AC_SUBST([REPLACE_VSNPRINTF])
 224   REPLACE_VSPRINTF=0;            AC_SUBST([REPLACE_VSPRINTF])
 225 ])