| # stdio_h.m4 serial 56 |
| dnl Copyright (C) 2007-2021 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_ONCE([gl_STDIO_H], |
| [ |
| AC_REQUIRE([gl_STDIO_H_DEFAULTS]) |
| AH_VERBATIM([MINGW_ANSI_STDIO], |
| [/* Use GNU style printf and scanf. */ |
| #ifndef __USE_MINGW_ANSI_STDIO |
| # undef __USE_MINGW_ANSI_STDIO |
| #endif |
| ]) |
| AC_DEFINE([__USE_MINGW_ANSI_STDIO]) |
| gl_NEXT_HEADERS([stdio.h]) |
| |
| dnl Determine whether __USE_MINGW_ANSI_STDIO makes printf and |
| dnl inttypes.h behave like gnu instead of system; we must give our |
| dnl printf wrapper the right attribute to match. |
| AC_CACHE_CHECK([which flavor of printf attribute matches inttypes macros], |
| [gl_cv_func_printf_attribute_flavor], |
| [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ |
| #define __STDC_FORMAT_MACROS 1 |
| #include <stdio.h> |
| #include <inttypes.h> |
| /* For non-mingw systems, compilation will trivially succeed. |
| For mingw, compilation will succeed for older mingw (system |
| printf, "I64d") and fail for newer mingw (gnu printf, "lld"). */ |
| #if (defined _WIN32 && ! defined __CYGWIN__) && \ |
| (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) |
| extern char PRIdMAX_probe[sizeof PRIdMAX == sizeof "I64d" ? 1 : -1]; |
| #endif |
| ]])], [gl_cv_func_printf_attribute_flavor=system], |
| [gl_cv_func_printf_attribute_flavor=gnu])]) |
| if test "$gl_cv_func_printf_attribute_flavor" = gnu; then |
| AC_DEFINE([GNULIB_PRINTF_ATTRIBUTE_FLAVOR_GNU], [1], |
| [Define to 1 if printf and friends should be labeled with |
| attribute "__gnu_printf__" instead of "__printf__"]) |
| fi |
| |
| dnl This ifdef is necessary to avoid an error "missing file lib/stdio-read.c" |
| dnl "expected source file, required through AC_LIBSOURCES, not found". It is |
| dnl also an optimization, to avoid performing a configure check whose result |
| dnl is not used. But it does not make the test of GNULIB_STDIO_H_NONBLOCKING |
| dnl or GNULIB_NONBLOCKING redundant. |
| m4_ifdef([gl_NONBLOCKING_IO], [ |
| gl_NONBLOCKING_IO |
| if test $gl_cv_have_nonblocking != yes; then |
| REPLACE_STDIO_READ_FUNCS=1 |
| AC_LIBOBJ([stdio-read]) |
| fi |
| ]) |
| |
| dnl This ifdef is necessary to avoid an error "missing file lib/stdio-write.c" |
| dnl "expected source file, required through AC_LIBSOURCES, not found". It is |
| dnl also an optimization, to avoid performing a configure check whose result |
| dnl is not used. But it does not make the test of GNULIB_STDIO_H_SIGPIPE or |
| dnl 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 This ifdef is necessary to avoid an error "missing file lib/stdio-write.c" |
| dnl "expected source file, required through AC_LIBSOURCES, not found". It is |
| dnl also an optimization, to avoid performing a configure check whose result |
| dnl is not used. But it does not make the test of GNULIB_STDIO_H_NONBLOCKING |
| dnl or GNULIB_NONBLOCKING redundant. |
| m4_ifdef([gl_NONBLOCKING_IO], [ |
| gl_NONBLOCKING_IO |
| if test $gl_cv_have_nonblocking != 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 both C89 and C11. |
| gl_WARN_ON_USE_PREPARE([[#include <stdio.h> |
| ]], [dprintf fpurge fseeko ftello getdelim getline gets pclose popen |
| renameat snprintf tmpfile vdprintf vsnprintf]) |
| |
| AC_REQUIRE([AC_C_RESTRICT]) |
| |
| AC_CHECK_DECLS_ONCE([fcloseall]) |
| if test $ac_cv_have_decl_fcloseall = no; then |
| HAVE_DECL_FCLOSEALL=0 |
| fi |
| ]) |
| |
| # gl_STDIO_MODULE_INDICATOR([modulename]) |
| # sets the shell variable that indicates the presence of the given module |
| # to a C preprocessor expression that will evaluate to 1. |
| # This macro invocation must not occur in macros that are AC_REQUIREd. |
| AC_DEFUN([gl_STDIO_MODULE_INDICATOR], |
| [ |
| dnl Ensure to expand the default settings once only. |
| gl_STDIO_H_REQUIRE_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]) |
| ]) |
| |
| # Initializes the default values for AC_SUBSTed shell variables. |
| # This macro must not be AC_REQUIREd. It must only be invoked, and only |
| # outside of macros or in macros that are not AC_REQUIREd. |
| AC_DEFUN([gl_STDIO_H_REQUIRE_DEFAULTS], |
| [ |
| m4_defun(GL_MODULE_INDICATOR_PREFIX[_STDIO_H_MODULE_INDICATOR_DEFAULTS], [ |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DPRINTF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCLOSE]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FDOPEN]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FFLUSH]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FGETC]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FGETS]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FOPEN]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FPRINTF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FPRINTF_POSIX]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FPURGE]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FPUTC]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FPUTS]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FREAD]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FREOPEN]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSCANF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSEEK]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSEEKO]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FTELL]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FTELLO]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FWRITE]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETC]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETCHAR]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETDELIM]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLINE]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OBSTACK_PRINTF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_OBSTACK_PRINTF_POSIX]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PCLOSE]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PERROR]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POPEN]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PRINTF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PRINTF_POSIX]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PUTC]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PUTCHAR]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PUTS]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REMOVE]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RENAME]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RENAMEAT]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SCANF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SNPRINTF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SPRINTF_POSIX]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STDIO_H_NONBLOCKING]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STDIO_H_SIGPIPE]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TMPFILE]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VASPRINTF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VFSCANF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VSCANF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VDPRINTF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VFPRINTF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VFPRINTF_POSIX]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VPRINTF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VPRINTF_POSIX]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VSNPRINTF]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_VSPRINTF_POSIX]) |
| dnl Support Microsoft deprecated alias function names by default. |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_FCLOSEALL], [1]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_FDOPEN], [1]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_FILENO], [1]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GETW], [1]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_PUTW], [1]) |
| gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_TEMPNAM], [1]) |
| ]) |
| m4_require(GL_MODULE_INDICATOR_PREFIX[_STDIO_H_MODULE_INDICATOR_DEFAULTS]) |
| AC_REQUIRE([gl_STDIO_H_DEFAULTS]) |
| ]) |
| |
| AC_DEFUN([gl_STDIO_H_DEFAULTS], |
| [ |
| dnl Assume proper GNU behavior unless another module says otherwise. |
| HAVE_DECL_FCLOSEALL=1; AC_SUBST([HAVE_DECL_FCLOSEALL]) |
| HAVE_DECL_FPURGE=1; AC_SUBST([HAVE_DECL_FPURGE]) |
| HAVE_DECL_FSEEKO=1; AC_SUBST([HAVE_DECL_FSEEKO]) |
| HAVE_DECL_FTELLO=1; AC_SUBST([HAVE_DECL_FTELLO]) |
| 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_PCLOSE=1; AC_SUBST([HAVE_PCLOSE]) |
| HAVE_POPEN=1; AC_SUBST([HAVE_POPEN]) |
| 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_FDOPEN=0; AC_SUBST([REPLACE_FDOPEN]) |
| 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_READ_FUNCS=0; AC_SUBST([REPLACE_STDIO_READ_FUNCS]) |
| 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]) |
| ]) |
