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emacs/m4/stdio_h.m4

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# stdio_h.m4 serial 52
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([gl_STDIO_H],
[
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])
AC_REQUIRE([gl_STDIO_H_DEFAULTS])
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 No need to create extra modules for these functions. Everyone who uses
dnl <stdio.h> likely needs them.
GNULIB_FSCANF=1
gl_MODULE_INDICATOR([fscanf])
GNULIB_SCANF=1
gl_MODULE_INDICATOR([scanf])
GNULIB_FGETC=1
GNULIB_GETC=1
GNULIB_GETCHAR=1
GNULIB_FGETS=1
GNULIB_FREAD=1
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 No need to create extra modules for these functions. Everyone who uses
dnl <stdio.h> likely needs them.
GNULIB_FPRINTF=1
GNULIB_PRINTF=1
GNULIB_VFPRINTF=1
GNULIB_VPRINTF=1
GNULIB_FPUTC=1
GNULIB_PUTC=1
GNULIB_PUTCHAR=1
GNULIB_FPUTS=1
GNULIB_PUTS=1
GNULIB_FWRITE=1
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
])
AC_DEFUN([gl_STDIO_MODULE_INDICATOR],
[
dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
AC_REQUIRE([gl_STDIO_H_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])
])
AC_DEFUN([gl_STDIO_H_DEFAULTS],
[
GNULIB_DPRINTF=0; AC_SUBST([GNULIB_DPRINTF])
GNULIB_FCLOSE=0; AC_SUBST([GNULIB_FCLOSE])
GNULIB_FDOPEN=0; AC_SUBST([GNULIB_FDOPEN])
GNULIB_FFLUSH=0; AC_SUBST([GNULIB_FFLUSH])
GNULIB_FGETC=0; AC_SUBST([GNULIB_FGETC])
GNULIB_FGETS=0; AC_SUBST([GNULIB_FGETS])
GNULIB_FOPEN=0; AC_SUBST([GNULIB_FOPEN])
GNULIB_FPRINTF=0; AC_SUBST([GNULIB_FPRINTF])
GNULIB_FPRINTF_POSIX=0; AC_SUBST([GNULIB_FPRINTF_POSIX])
GNULIB_FPURGE=0; AC_SUBST([GNULIB_FPURGE])
GNULIB_FPUTC=0; AC_SUBST([GNULIB_FPUTC])
GNULIB_FPUTS=0; AC_SUBST([GNULIB_FPUTS])
GNULIB_FREAD=0; AC_SUBST([GNULIB_FREAD])
GNULIB_FREOPEN=0; AC_SUBST([GNULIB_FREOPEN])
GNULIB_FSCANF=0; AC_SUBST([GNULIB_FSCANF])
GNULIB_FSEEK=0; AC_SUBST([GNULIB_FSEEK])
GNULIB_FSEEKO=0; AC_SUBST([GNULIB_FSEEKO])
GNULIB_FTELL=0; AC_SUBST([GNULIB_FTELL])
GNULIB_FTELLO=0; AC_SUBST([GNULIB_FTELLO])
GNULIB_FWRITE=0; AC_SUBST([GNULIB_FWRITE])
GNULIB_GETC=0; AC_SUBST([GNULIB_GETC])
GNULIB_GETCHAR=0; AC_SUBST([GNULIB_GETCHAR])
GNULIB_GETDELIM=0; AC_SUBST([GNULIB_GETDELIM])
GNULIB_GETLINE=0; AC_SUBST([GNULIB_GETLINE])
GNULIB_OBSTACK_PRINTF=0; AC_SUBST([GNULIB_OBSTACK_PRINTF])
GNULIB_OBSTACK_PRINTF_POSIX=0; AC_SUBST([GNULIB_OBSTACK_PRINTF_POSIX])
GNULIB_PCLOSE=0; AC_SUBST([GNULIB_PCLOSE])
GNULIB_PERROR=0; AC_SUBST([GNULIB_PERROR])
GNULIB_POPEN=0; AC_SUBST([GNULIB_POPEN])
GNULIB_PRINTF=0; AC_SUBST([GNULIB_PRINTF])
GNULIB_PRINTF_POSIX=0; AC_SUBST([GNULIB_PRINTF_POSIX])
GNULIB_PUTC=0; AC_SUBST([GNULIB_PUTC])
GNULIB_PUTCHAR=0; AC_SUBST([GNULIB_PUTCHAR])
GNULIB_PUTS=0; AC_SUBST([GNULIB_PUTS])
GNULIB_REMOVE=0; AC_SUBST([GNULIB_REMOVE])
GNULIB_RENAME=0; AC_SUBST([GNULIB_RENAME])
GNULIB_RENAMEAT=0; AC_SUBST([GNULIB_RENAMEAT])
GNULIB_SCANF=0; AC_SUBST([GNULIB_SCANF])
GNULIB_SNPRINTF=0; AC_SUBST([GNULIB_SNPRINTF])
GNULIB_SPRINTF_POSIX=0; AC_SUBST([GNULIB_SPRINTF_POSIX])
GNULIB_STDIO_H_NONBLOCKING=0; AC_SUBST([GNULIB_STDIO_H_NONBLOCKING])
GNULIB_STDIO_H_SIGPIPE=0; AC_SUBST([GNULIB_STDIO_H_SIGPIPE])
GNULIB_TMPFILE=0; AC_SUBST([GNULIB_TMPFILE])
GNULIB_VASPRINTF=0; AC_SUBST([GNULIB_VASPRINTF])
GNULIB_VFSCANF=0; AC_SUBST([GNULIB_VFSCANF])
GNULIB_VSCANF=0; AC_SUBST([GNULIB_VSCANF])
GNULIB_VDPRINTF=0; AC_SUBST([GNULIB_VDPRINTF])
GNULIB_VFPRINTF=0; AC_SUBST([GNULIB_VFPRINTF])
GNULIB_VFPRINTF_POSIX=0; AC_SUBST([GNULIB_VFPRINTF_POSIX])
GNULIB_VPRINTF=0; AC_SUBST([GNULIB_VPRINTF])
GNULIB_VPRINTF_POSIX=0; AC_SUBST([GNULIB_VPRINTF_POSIX])
GNULIB_VSNPRINTF=0; AC_SUBST([GNULIB_VSNPRINTF])
GNULIB_VSPRINTF_POSIX=0; AC_SUBST([GNULIB_VSPRINTF_POSIX])
dnl Support Microsoft deprecated alias function names by default.
GNULIB_MDA_FCLOSEALL=1; AC_SUBST([GNULIB_MDA_FCLOSEALL])
GNULIB_MDA_FDOPEN=1; AC_SUBST([GNULIB_MDA_FDOPEN])
GNULIB_MDA_FILENO=1; AC_SUBST([GNULIB_MDA_FILENO])
GNULIB_MDA_GETW=1; AC_SUBST([GNULIB_MDA_GETW])
GNULIB_MDA_PUTW=1; AC_SUBST([GNULIB_MDA_PUTW])
GNULIB_MDA_TEMPNAM=1; AC_SUBST([GNULIB_MDA_TEMPNAM])
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])
])
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