1# stdio_h.m4 serial 50 2dnl Copyright (C) 2007-2020 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 114AC_DEFUN([gl_STDIO_MODULE_INDICATOR], 115[ 116 dnl Use AC_REQUIRE here, so that the default settings are expanded once only. 117 AC_REQUIRE([gl_STDIO_H_DEFAULTS]) 118 gl_MODULE_INDICATOR_SET_VARIABLE([$1]) 119 dnl Define it also as a C macro, for the benefit of the unit tests. 120 gl_MODULE_INDICATOR_FOR_TESTS([$1]) 121]) 122 123AC_DEFUN([gl_STDIO_H_DEFAULTS], 124[ 125 GNULIB_DPRINTF=0; AC_SUBST([GNULIB_DPRINTF]) 126 GNULIB_FCLOSE=0; AC_SUBST([GNULIB_FCLOSE]) 127 GNULIB_FDOPEN=0; AC_SUBST([GNULIB_FDOPEN]) 128 GNULIB_FFLUSH=0; AC_SUBST([GNULIB_FFLUSH]) 129 GNULIB_FGETC=0; AC_SUBST([GNULIB_FGETC]) 130 GNULIB_FGETS=0; AC_SUBST([GNULIB_FGETS]) 131 GNULIB_FOPEN=0; AC_SUBST([GNULIB_FOPEN]) 132 GNULIB_FPRINTF=0; AC_SUBST([GNULIB_FPRINTF]) 133 GNULIB_FPRINTF_POSIX=0; AC_SUBST([GNULIB_FPRINTF_POSIX]) 134 GNULIB_FPURGE=0; AC_SUBST([GNULIB_FPURGE]) 135 GNULIB_FPUTC=0; AC_SUBST([GNULIB_FPUTC]) 136 GNULIB_FPUTS=0; AC_SUBST([GNULIB_FPUTS]) 137 GNULIB_FREAD=0; AC_SUBST([GNULIB_FREAD]) 138 GNULIB_FREOPEN=0; AC_SUBST([GNULIB_FREOPEN]) 139 GNULIB_FSCANF=0; AC_SUBST([GNULIB_FSCANF]) 140 GNULIB_FSEEK=0; AC_SUBST([GNULIB_FSEEK]) 141 GNULIB_FSEEKO=0; AC_SUBST([GNULIB_FSEEKO]) 142 GNULIB_FTELL=0; AC_SUBST([GNULIB_FTELL]) 143 GNULIB_FTELLO=0; AC_SUBST([GNULIB_FTELLO]) 144 GNULIB_FWRITE=0; AC_SUBST([GNULIB_FWRITE]) 145 GNULIB_GETC=0; AC_SUBST([GNULIB_GETC]) 146 GNULIB_GETCHAR=0; AC_SUBST([GNULIB_GETCHAR]) 147 GNULIB_GETDELIM=0; AC_SUBST([GNULIB_GETDELIM]) 148 GNULIB_GETLINE=0; AC_SUBST([GNULIB_GETLINE]) 149 GNULIB_OBSTACK_PRINTF=0; AC_SUBST([GNULIB_OBSTACK_PRINTF]) 150 GNULIB_OBSTACK_PRINTF_POSIX=0; AC_SUBST([GNULIB_OBSTACK_PRINTF_POSIX]) 151 GNULIB_PCLOSE=0; AC_SUBST([GNULIB_PCLOSE]) 152 GNULIB_PERROR=0; AC_SUBST([GNULIB_PERROR]) 153 GNULIB_POPEN=0; AC_SUBST([GNULIB_POPEN]) 154 GNULIB_PRINTF=0; AC_SUBST([GNULIB_PRINTF]) 155 GNULIB_PRINTF_POSIX=0; AC_SUBST([GNULIB_PRINTF_POSIX]) 156 GNULIB_PUTC=0; AC_SUBST([GNULIB_PUTC]) 157 GNULIB_PUTCHAR=0; AC_SUBST([GNULIB_PUTCHAR]) 158 GNULIB_PUTS=0; AC_SUBST([GNULIB_PUTS]) 159 GNULIB_REMOVE=0; AC_SUBST([GNULIB_REMOVE]) 160 GNULIB_RENAME=0; AC_SUBST([GNULIB_RENAME]) 161 GNULIB_RENAMEAT=0; AC_SUBST([GNULIB_RENAMEAT]) 162 GNULIB_SCANF=0; AC_SUBST([GNULIB_SCANF]) 163 GNULIB_SNPRINTF=0; AC_SUBST([GNULIB_SNPRINTF]) 164 GNULIB_SPRINTF_POSIX=0; AC_SUBST([GNULIB_SPRINTF_POSIX]) 165 GNULIB_STDIO_H_NONBLOCKING=0; AC_SUBST([GNULIB_STDIO_H_NONBLOCKING]) 166 GNULIB_STDIO_H_SIGPIPE=0; AC_SUBST([GNULIB_STDIO_H_SIGPIPE]) 167 GNULIB_TMPFILE=0; AC_SUBST([GNULIB_TMPFILE]) 168 GNULIB_VASPRINTF=0; AC_SUBST([GNULIB_VASPRINTF]) 169 GNULIB_VFSCANF=0; AC_SUBST([GNULIB_VFSCANF]) 170 GNULIB_VSCANF=0; AC_SUBST([GNULIB_VSCANF]) 171 GNULIB_VDPRINTF=0; AC_SUBST([GNULIB_VDPRINTF]) 172 GNULIB_VFPRINTF=0; AC_SUBST([GNULIB_VFPRINTF]) 173 GNULIB_VFPRINTF_POSIX=0; AC_SUBST([GNULIB_VFPRINTF_POSIX]) 174 GNULIB_VPRINTF=0; AC_SUBST([GNULIB_VPRINTF]) 175 GNULIB_VPRINTF_POSIX=0; AC_SUBST([GNULIB_VPRINTF_POSIX]) 176 GNULIB_VSNPRINTF=0; AC_SUBST([GNULIB_VSNPRINTF]) 177 GNULIB_VSPRINTF_POSIX=0; AC_SUBST([GNULIB_VSPRINTF_POSIX]) 178 dnl Assume proper GNU behavior unless another module says otherwise. 179 HAVE_DECL_FPURGE=1; AC_SUBST([HAVE_DECL_FPURGE]) 180 HAVE_DECL_FSEEKO=1; AC_SUBST([HAVE_DECL_FSEEKO]) 181 HAVE_DECL_FTELLO=1; AC_SUBST([HAVE_DECL_FTELLO]) 182 HAVE_DECL_GETDELIM=1; AC_SUBST([HAVE_DECL_GETDELIM]) 183 HAVE_DECL_GETLINE=1; AC_SUBST([HAVE_DECL_GETLINE]) 184 HAVE_DECL_OBSTACK_PRINTF=1; AC_SUBST([HAVE_DECL_OBSTACK_PRINTF]) 185 HAVE_DECL_SNPRINTF=1; AC_SUBST([HAVE_DECL_SNPRINTF]) 186 HAVE_DECL_VSNPRINTF=1; AC_SUBST([HAVE_DECL_VSNPRINTF]) 187 HAVE_DPRINTF=1; AC_SUBST([HAVE_DPRINTF]) 188 HAVE_FSEEKO=1; AC_SUBST([HAVE_FSEEKO]) 189 HAVE_FTELLO=1; AC_SUBST([HAVE_FTELLO]) 190 HAVE_PCLOSE=1; AC_SUBST([HAVE_PCLOSE]) 191 HAVE_POPEN=1; AC_SUBST([HAVE_POPEN]) 192 HAVE_RENAMEAT=1; AC_SUBST([HAVE_RENAMEAT]) 193 HAVE_VASPRINTF=1; AC_SUBST([HAVE_VASPRINTF]) 194 HAVE_VDPRINTF=1; AC_SUBST([HAVE_VDPRINTF]) 195 REPLACE_DPRINTF=0; AC_SUBST([REPLACE_DPRINTF]) 196 REPLACE_FCLOSE=0; AC_SUBST([REPLACE_FCLOSE]) 197 REPLACE_FDOPEN=0; AC_SUBST([REPLACE_FDOPEN]) 198 REPLACE_FFLUSH=0; AC_SUBST([REPLACE_FFLUSH]) 199 REPLACE_FOPEN=0; AC_SUBST([REPLACE_FOPEN]) 200 REPLACE_FPRINTF=0; AC_SUBST([REPLACE_FPRINTF]) 201 REPLACE_FPURGE=0; AC_SUBST([REPLACE_FPURGE]) 202 REPLACE_FREOPEN=0; AC_SUBST([REPLACE_FREOPEN]) 203 REPLACE_FSEEK=0; AC_SUBST([REPLACE_FSEEK]) 204 REPLACE_FSEEKO=0; AC_SUBST([REPLACE_FSEEKO]) 205 REPLACE_FTELL=0; AC_SUBST([REPLACE_FTELL]) 206 REPLACE_FTELLO=0; AC_SUBST([REPLACE_FTELLO]) 207 REPLACE_GETDELIM=0; AC_SUBST([REPLACE_GETDELIM]) 208 REPLACE_GETLINE=0; AC_SUBST([REPLACE_GETLINE]) 209 REPLACE_OBSTACK_PRINTF=0; AC_SUBST([REPLACE_OBSTACK_PRINTF]) 210 REPLACE_PERROR=0; AC_SUBST([REPLACE_PERROR]) 211 REPLACE_POPEN=0; AC_SUBST([REPLACE_POPEN]) 212 REPLACE_PRINTF=0; AC_SUBST([REPLACE_PRINTF]) 213 REPLACE_REMOVE=0; AC_SUBST([REPLACE_REMOVE]) 214 REPLACE_RENAME=0; AC_SUBST([REPLACE_RENAME]) 215 REPLACE_RENAMEAT=0; AC_SUBST([REPLACE_RENAMEAT]) 216 REPLACE_SNPRINTF=0; AC_SUBST([REPLACE_SNPRINTF]) 217 REPLACE_SPRINTF=0; AC_SUBST([REPLACE_SPRINTF]) 218 REPLACE_STDIO_READ_FUNCS=0; AC_SUBST([REPLACE_STDIO_READ_FUNCS]) 219 REPLACE_STDIO_WRITE_FUNCS=0; AC_SUBST([REPLACE_STDIO_WRITE_FUNCS]) 220 REPLACE_TMPFILE=0; AC_SUBST([REPLACE_TMPFILE]) 221 REPLACE_VASPRINTF=0; AC_SUBST([REPLACE_VASPRINTF]) 222 REPLACE_VDPRINTF=0; AC_SUBST([REPLACE_VDPRINTF]) 223 REPLACE_VFPRINTF=0; AC_SUBST([REPLACE_VFPRINTF]) 224 REPLACE_VPRINTF=0; AC_SUBST([REPLACE_VPRINTF]) 225 REPLACE_VSNPRINTF=0; AC_SUBST([REPLACE_VSNPRINTF]) 226 REPLACE_VSPRINTF=0; AC_SUBST([REPLACE_VSPRINTF]) 227]) 228