1# stdio_h.m4 serial 52 2dnl Copyright (C) 2007-2021 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7AC_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 __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 AC_REQUIRE([AC_C_RESTRICT]) 112 113 AC_CHECK_DECLS_ONCE([fcloseall]) 114 if test $ac_cv_have_decl_fcloseall = no; then 115 HAVE_DECL_FCLOSEALL=0 116 fi 117]) 118 119AC_DEFUN([gl_STDIO_MODULE_INDICATOR], 120[ 121 dnl Use AC_REQUIRE here, so that the default settings are expanded once only. 122 AC_REQUIRE([gl_STDIO_H_DEFAULTS]) 123 gl_MODULE_INDICATOR_SET_VARIABLE([$1]) 124 dnl Define it also as a C macro, for the benefit of the unit tests. 125 gl_MODULE_INDICATOR_FOR_TESTS([$1]) 126]) 127 128AC_DEFUN([gl_STDIO_H_DEFAULTS], 129[ 130 GNULIB_DPRINTF=0; AC_SUBST([GNULIB_DPRINTF]) 131 GNULIB_FCLOSE=0; AC_SUBST([GNULIB_FCLOSE]) 132 GNULIB_FDOPEN=0; AC_SUBST([GNULIB_FDOPEN]) 133 GNULIB_FFLUSH=0; AC_SUBST([GNULIB_FFLUSH]) 134 GNULIB_FGETC=0; AC_SUBST([GNULIB_FGETC]) 135 GNULIB_FGETS=0; AC_SUBST([GNULIB_FGETS]) 136 GNULIB_FOPEN=0; AC_SUBST([GNULIB_FOPEN]) 137 GNULIB_FPRINTF=0; AC_SUBST([GNULIB_FPRINTF]) 138 GNULIB_FPRINTF_POSIX=0; AC_SUBST([GNULIB_FPRINTF_POSIX]) 139 GNULIB_FPURGE=0; AC_SUBST([GNULIB_FPURGE]) 140 GNULIB_FPUTC=0; AC_SUBST([GNULIB_FPUTC]) 141 GNULIB_FPUTS=0; AC_SUBST([GNULIB_FPUTS]) 142 GNULIB_FREAD=0; AC_SUBST([GNULIB_FREAD]) 143 GNULIB_FREOPEN=0; AC_SUBST([GNULIB_FREOPEN]) 144 GNULIB_FSCANF=0; AC_SUBST([GNULIB_FSCANF]) 145 GNULIB_FSEEK=0; AC_SUBST([GNULIB_FSEEK]) 146 GNULIB_FSEEKO=0; AC_SUBST([GNULIB_FSEEKO]) 147 GNULIB_FTELL=0; AC_SUBST([GNULIB_FTELL]) 148 GNULIB_FTELLO=0; AC_SUBST([GNULIB_FTELLO]) 149 GNULIB_FWRITE=0; AC_SUBST([GNULIB_FWRITE]) 150 GNULIB_GETC=0; AC_SUBST([GNULIB_GETC]) 151 GNULIB_GETCHAR=0; AC_SUBST([GNULIB_GETCHAR]) 152 GNULIB_GETDELIM=0; AC_SUBST([GNULIB_GETDELIM]) 153 GNULIB_GETLINE=0; AC_SUBST([GNULIB_GETLINE]) 154 GNULIB_OBSTACK_PRINTF=0; AC_SUBST([GNULIB_OBSTACK_PRINTF]) 155 GNULIB_OBSTACK_PRINTF_POSIX=0; AC_SUBST([GNULIB_OBSTACK_PRINTF_POSIX]) 156 GNULIB_PCLOSE=0; AC_SUBST([GNULIB_PCLOSE]) 157 GNULIB_PERROR=0; AC_SUBST([GNULIB_PERROR]) 158 GNULIB_POPEN=0; AC_SUBST([GNULIB_POPEN]) 159 GNULIB_PRINTF=0; AC_SUBST([GNULIB_PRINTF]) 160 GNULIB_PRINTF_POSIX=0; AC_SUBST([GNULIB_PRINTF_POSIX]) 161 GNULIB_PUTC=0; AC_SUBST([GNULIB_PUTC]) 162 GNULIB_PUTCHAR=0; AC_SUBST([GNULIB_PUTCHAR]) 163 GNULIB_PUTS=0; AC_SUBST([GNULIB_PUTS]) 164 GNULIB_REMOVE=0; AC_SUBST([GNULIB_REMOVE]) 165 GNULIB_RENAME=0; AC_SUBST([GNULIB_RENAME]) 166 GNULIB_RENAMEAT=0; AC_SUBST([GNULIB_RENAMEAT]) 167 GNULIB_SCANF=0; AC_SUBST([GNULIB_SCANF]) 168 GNULIB_SNPRINTF=0; AC_SUBST([GNULIB_SNPRINTF]) 169 GNULIB_SPRINTF_POSIX=0; AC_SUBST([GNULIB_SPRINTF_POSIX]) 170 GNULIB_STDIO_H_NONBLOCKING=0; AC_SUBST([GNULIB_STDIO_H_NONBLOCKING]) 171 GNULIB_STDIO_H_SIGPIPE=0; AC_SUBST([GNULIB_STDIO_H_SIGPIPE]) 172 GNULIB_TMPFILE=0; AC_SUBST([GNULIB_TMPFILE]) 173 GNULIB_VASPRINTF=0; AC_SUBST([GNULIB_VASPRINTF]) 174 GNULIB_VFSCANF=0; AC_SUBST([GNULIB_VFSCANF]) 175 GNULIB_VSCANF=0; AC_SUBST([GNULIB_VSCANF]) 176 GNULIB_VDPRINTF=0; AC_SUBST([GNULIB_VDPRINTF]) 177 GNULIB_VFPRINTF=0; AC_SUBST([GNULIB_VFPRINTF]) 178 GNULIB_VFPRINTF_POSIX=0; AC_SUBST([GNULIB_VFPRINTF_POSIX]) 179 GNULIB_VPRINTF=0; AC_SUBST([GNULIB_VPRINTF]) 180 GNULIB_VPRINTF_POSIX=0; AC_SUBST([GNULIB_VPRINTF_POSIX]) 181 GNULIB_VSNPRINTF=0; AC_SUBST([GNULIB_VSNPRINTF]) 182 GNULIB_VSPRINTF_POSIX=0; AC_SUBST([GNULIB_VSPRINTF_POSIX]) 183 dnl Support Microsoft deprecated alias function names by default. 184 GNULIB_MDA_FCLOSEALL=1; AC_SUBST([GNULIB_MDA_FCLOSEALL]) 185 GNULIB_MDA_FDOPEN=1; AC_SUBST([GNULIB_MDA_FDOPEN]) 186 GNULIB_MDA_FILENO=1; AC_SUBST([GNULIB_MDA_FILENO]) 187 GNULIB_MDA_GETW=1; AC_SUBST([GNULIB_MDA_GETW]) 188 GNULIB_MDA_PUTW=1; AC_SUBST([GNULIB_MDA_PUTW]) 189 GNULIB_MDA_TEMPNAM=1; AC_SUBST([GNULIB_MDA_TEMPNAM]) 190 dnl Assume proper GNU behavior unless another module says otherwise. 191 HAVE_DECL_FCLOSEALL=1; AC_SUBST([HAVE_DECL_FCLOSEALL]) 192 HAVE_DECL_FPURGE=1; AC_SUBST([HAVE_DECL_FPURGE]) 193 HAVE_DECL_FSEEKO=1; AC_SUBST([HAVE_DECL_FSEEKO]) 194 HAVE_DECL_FTELLO=1; AC_SUBST([HAVE_DECL_FTELLO]) 195 HAVE_DECL_GETDELIM=1; AC_SUBST([HAVE_DECL_GETDELIM]) 196 HAVE_DECL_GETLINE=1; AC_SUBST([HAVE_DECL_GETLINE]) 197 HAVE_DECL_OBSTACK_PRINTF=1; AC_SUBST([HAVE_DECL_OBSTACK_PRINTF]) 198 HAVE_DECL_SNPRINTF=1; AC_SUBST([HAVE_DECL_SNPRINTF]) 199 HAVE_DECL_VSNPRINTF=1; AC_SUBST([HAVE_DECL_VSNPRINTF]) 200 HAVE_DPRINTF=1; AC_SUBST([HAVE_DPRINTF]) 201 HAVE_FSEEKO=1; AC_SUBST([HAVE_FSEEKO]) 202 HAVE_FTELLO=1; AC_SUBST([HAVE_FTELLO]) 203 HAVE_PCLOSE=1; AC_SUBST([HAVE_PCLOSE]) 204 HAVE_POPEN=1; AC_SUBST([HAVE_POPEN]) 205 HAVE_RENAMEAT=1; AC_SUBST([HAVE_RENAMEAT]) 206 HAVE_VASPRINTF=1; AC_SUBST([HAVE_VASPRINTF]) 207 HAVE_VDPRINTF=1; AC_SUBST([HAVE_VDPRINTF]) 208 REPLACE_DPRINTF=0; AC_SUBST([REPLACE_DPRINTF]) 209 REPLACE_FCLOSE=0; AC_SUBST([REPLACE_FCLOSE]) 210 REPLACE_FDOPEN=0; AC_SUBST([REPLACE_FDOPEN]) 211 REPLACE_FFLUSH=0; AC_SUBST([REPLACE_FFLUSH]) 212 REPLACE_FOPEN=0; AC_SUBST([REPLACE_FOPEN]) 213 REPLACE_FPRINTF=0; AC_SUBST([REPLACE_FPRINTF]) 214 REPLACE_FPURGE=0; AC_SUBST([REPLACE_FPURGE]) 215 REPLACE_FREOPEN=0; AC_SUBST([REPLACE_FREOPEN]) 216 REPLACE_FSEEK=0; AC_SUBST([REPLACE_FSEEK]) 217 REPLACE_FSEEKO=0; AC_SUBST([REPLACE_FSEEKO]) 218 REPLACE_FTELL=0; AC_SUBST([REPLACE_FTELL]) 219 REPLACE_FTELLO=0; AC_SUBST([REPLACE_FTELLO]) 220 REPLACE_GETDELIM=0; AC_SUBST([REPLACE_GETDELIM]) 221 REPLACE_GETLINE=0; AC_SUBST([REPLACE_GETLINE]) 222 REPLACE_OBSTACK_PRINTF=0; AC_SUBST([REPLACE_OBSTACK_PRINTF]) 223 REPLACE_PERROR=0; AC_SUBST([REPLACE_PERROR]) 224 REPLACE_POPEN=0; AC_SUBST([REPLACE_POPEN]) 225 REPLACE_PRINTF=0; AC_SUBST([REPLACE_PRINTF]) 226 REPLACE_REMOVE=0; AC_SUBST([REPLACE_REMOVE]) 227 REPLACE_RENAME=0; AC_SUBST([REPLACE_RENAME]) 228 REPLACE_RENAMEAT=0; AC_SUBST([REPLACE_RENAMEAT]) 229 REPLACE_SNPRINTF=0; AC_SUBST([REPLACE_SNPRINTF]) 230 REPLACE_SPRINTF=0; AC_SUBST([REPLACE_SPRINTF]) 231 REPLACE_STDIO_READ_FUNCS=0; AC_SUBST([REPLACE_STDIO_READ_FUNCS]) 232 REPLACE_STDIO_WRITE_FUNCS=0; AC_SUBST([REPLACE_STDIO_WRITE_FUNCS]) 233 REPLACE_TMPFILE=0; AC_SUBST([REPLACE_TMPFILE]) 234 REPLACE_VASPRINTF=0; AC_SUBST([REPLACE_VASPRINTF]) 235 REPLACE_VDPRINTF=0; AC_SUBST([REPLACE_VDPRINTF]) 236 REPLACE_VFPRINTF=0; AC_SUBST([REPLACE_VFPRINTF]) 237 REPLACE_VPRINTF=0; AC_SUBST([REPLACE_VPRINTF]) 238 REPLACE_VSNPRINTF=0; AC_SUBST([REPLACE_VSNPRINTF]) 239 REPLACE_VSPRINTF=0; AC_SUBST([REPLACE_VSPRINTF]) 240]) 241