mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-01 08:17:38 +00:00
226 lines
11 KiB
Plaintext
226 lines
11 KiB
Plaintext
# stdio_h.m4 serial 59
|
|
dnl Copyright (C) 2007-2022 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 an optimization, to avoid performing a configure check whose
|
|
dnl result is not used. But it does not make the test of
|
|
dnl GNULIB_STDIO_H_NONBLOCKING 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
|
|
fi
|
|
])
|
|
|
|
dnl This ifdef is an optimization, to avoid performing a configure check whose
|
|
dnl result is not used. But it does not make the test of
|
|
dnl GNULIB_STDIO_H_SIGPIPE or 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
|
|
fi
|
|
])
|
|
dnl This ifdef is an optimization, to avoid performing a configure check whose
|
|
dnl result is not used. But it does not make the test of
|
|
dnl GNULIB_STDIO_H_NONBLOCKING 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
|
|
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_FOPEN_GNU])
|
|
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_FOPEN_FOR_FOPEN_GNU=0; AC_SUBST([REPLACE_FOPEN_FOR_FOPEN_GNU])
|
|
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])
|
|
])
|