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trader/m4/wchar_h.m4
John Zaitseff c0ca9b04da Update all auto-generated files 
These files have been created by running ./build-aux/bootstrap with
Gnulib as at commit b1268f22f443e8e4b9e85ddf4e024875a2cd2030 (with a date
stamp of Sun Jan 10 23:06:39 2021 +0100), Autoconf 2.69, Automake 1.16.3,
Gettext 0.21 and pkg-config 0.29.2.
2021-01-12 13:05:31 +11:00

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dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues.
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.
dnl Written by Eric Blake.
# wchar_h.m4 serial 50
AC_DEFUN([gl_WCHAR_H],
[
AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
AC_REQUIRE([gl_WCHAR_H_INLINE_OK])
dnl Prepare for creating substitute <wchar.h>.
dnl Check for <wchar.h> (missing in Linux uClibc when built without wide
dnl character support).
dnl <wchar.h> is always overridden, because of GNULIB_POSIXCHECK.
gl_CHECK_NEXT_HEADERS([wchar.h])
if test $ac_cv_header_wchar_h = yes; then
HAVE_WCHAR_H=1
else
HAVE_WCHAR_H=0
fi
AC_SUBST([HAVE_WCHAR_H])
AC_REQUIRE([gl_FEATURES_H])
AC_REQUIRE([gt_TYPE_WINT_T])
if test $gt_cv_c_wint_t = yes; then
HAVE_WINT_T=1
else
HAVE_WINT_T=0
fi
AC_SUBST([HAVE_WINT_T])
AC_REQUIRE([gl_TYPE_WINT_T_PREREQ])
dnl Check for declarations of anything we want to poison if the
dnl corresponding gnulib module is not in use.
gl_WARN_ON_USE_PREPARE([[
#include <wchar.h>
]],
[btowc wctob mbsinit mbrtowc mbrlen mbsrtowcs mbsnrtowcs wcrtomb
wcsrtombs wcsnrtombs wcwidth
wmemchr wmemcmp wmemcpy wmemmove wmempcpy wmemset
wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat wcscmp
wcsncmp wcscasecmp wcsncasecmp wcscoll wcsxfrm wcsdup wcschr wcsrchr
wcscspn wcsspn wcspbrk wcsstr wcstok wcswidth wcsftime
])
AC_REQUIRE([AC_C_RESTRICT])
AC_CHECK_DECLS([wcsdup], [], [], [[
#include <wchar.h>
]])
if test $ac_cv_have_decl_wcsdup = no; then
HAVE_DECL_WCSDUP=0
fi
])
dnl Check whether <wchar.h> is usable at all.
AC_DEFUN([gl_WCHAR_H_INLINE_OK],
[
dnl Test whether <wchar.h> suffers due to the transition from '__inline' to
dnl 'gnu_inline'. See <https://sourceware.org/bugzilla/show_bug.cgi?id=4022>
dnl and <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42440>. In summary,
dnl glibc version 2.5 or older, together with gcc version 4.3 or newer and
dnl the option -std=c99 or -std=gnu99, leads to a broken <wchar.h>.
AC_REQUIRE([AC_CANONICAL_HOST])
AC_CACHE_CHECK([whether <wchar.h> uses 'inline' correctly],
[gl_cv_header_wchar_h_correct_inline],
[gl_cv_header_wchar_h_correct_inline=yes
case "$host_os" in
*-gnu* | gnu*)
AC_LANG_CONFTEST([
AC_LANG_SOURCE([[
#define wcstod renamed_wcstod
#include <wchar.h>
extern int zero (void);
int main () { return zero(); }
]])])
dnl Do not rename the object file from conftest.$ac_objext to
dnl conftest1.$ac_objext, as this will cause the link to fail on
dnl z/OS when using the XPLINK object format (due to duplicate
dnl CSECT names). Instead, temporarily redefine $ac_compile so
dnl that the object file has the latter name from the start.
save_ac_compile="$ac_compile"
ac_compile=`echo "$save_ac_compile" | sed s/conftest/conftest1/`
if echo '#include "conftest.c"' >conftest1.c \
&& AC_TRY_EVAL([ac_compile]); then
AC_LANG_CONFTEST([
AC_LANG_SOURCE([[
#define wcstod renamed_wcstod
#include <wchar.h>
int zero (void) { return 0; }
]])])
dnl See note above about renaming object files.
ac_compile=`echo "$save_ac_compile" | sed s/conftest/conftest2/`
if echo '#include "conftest.c"' >conftest2.c \
&& AC_TRY_EVAL([ac_compile]); then
if $CC -o conftest$ac_exeext $CFLAGS $LDFLAGS conftest1.$ac_objext conftest2.$ac_objext $LIBS >&AS_MESSAGE_LOG_FD 2>&1; then
:
else
gl_cv_header_wchar_h_correct_inline=no
fi
fi
fi
ac_compile="$save_ac_compile"
rm -f conftest[12].c conftest[12].$ac_objext conftest$ac_exeext
;;
esac
])
if test $gl_cv_header_wchar_h_correct_inline = no; then
AC_MSG_ERROR([<wchar.h> cannot be used with this compiler ($CC $CFLAGS $CPPFLAGS).
This is a known interoperability problem of glibc <= 2.5 with gcc >= 4.3 in
C99 mode. You have four options:
- Add the flag -fgnu89-inline to CC and reconfigure, or
- Fix your include files, using parts of
<https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=b037a293a48718af30d706c2e18c929d0e69a621>, or
- Use a gcc version older than 4.3, or
- Don't use the flags -std=c99 or -std=gnu99.
Configuration aborted.])
fi
])
AC_DEFUN([gl_WCHAR_MODULE_INDICATOR],
[
dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
AC_REQUIRE([gl_WCHAR_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_WCHAR_H_DEFAULTS],
[
GNULIB_BTOWC=0; AC_SUBST([GNULIB_BTOWC])
GNULIB_WCTOB=0; AC_SUBST([GNULIB_WCTOB])
GNULIB_MBSINIT=0; AC_SUBST([GNULIB_MBSINIT])
GNULIB_MBRTOWC=0; AC_SUBST([GNULIB_MBRTOWC])
GNULIB_MBRLEN=0; AC_SUBST([GNULIB_MBRLEN])
GNULIB_MBSRTOWCS=0; AC_SUBST([GNULIB_MBSRTOWCS])
GNULIB_MBSNRTOWCS=0; AC_SUBST([GNULIB_MBSNRTOWCS])
GNULIB_WCRTOMB=0; AC_SUBST([GNULIB_WCRTOMB])
GNULIB_WCSRTOMBS=0; AC_SUBST([GNULIB_WCSRTOMBS])
GNULIB_WCSNRTOMBS=0; AC_SUBST([GNULIB_WCSNRTOMBS])
GNULIB_WCWIDTH=0; AC_SUBST([GNULIB_WCWIDTH])
GNULIB_WMEMCHR=0; AC_SUBST([GNULIB_WMEMCHR])
GNULIB_WMEMCMP=0; AC_SUBST([GNULIB_WMEMCMP])
GNULIB_WMEMCPY=0; AC_SUBST([GNULIB_WMEMCPY])
GNULIB_WMEMMOVE=0; AC_SUBST([GNULIB_WMEMMOVE])
GNULIB_WMEMPCPY=0; AC_SUBST([GNULIB_WMEMPCPY])
GNULIB_WMEMSET=0; AC_SUBST([GNULIB_WMEMSET])
GNULIB_WCSLEN=0; AC_SUBST([GNULIB_WCSLEN])
GNULIB_WCSNLEN=0; AC_SUBST([GNULIB_WCSNLEN])
GNULIB_WCSCPY=0; AC_SUBST([GNULIB_WCSCPY])
GNULIB_WCPCPY=0; AC_SUBST([GNULIB_WCPCPY])
GNULIB_WCSNCPY=0; AC_SUBST([GNULIB_WCSNCPY])
GNULIB_WCPNCPY=0; AC_SUBST([GNULIB_WCPNCPY])
GNULIB_WCSCAT=0; AC_SUBST([GNULIB_WCSCAT])
GNULIB_WCSNCAT=0; AC_SUBST([GNULIB_WCSNCAT])
GNULIB_WCSCMP=0; AC_SUBST([GNULIB_WCSCMP])
GNULIB_WCSNCMP=0; AC_SUBST([GNULIB_WCSNCMP])
GNULIB_WCSCASECMP=0; AC_SUBST([GNULIB_WCSCASECMP])
GNULIB_WCSNCASECMP=0; AC_SUBST([GNULIB_WCSNCASECMP])
GNULIB_WCSCOLL=0; AC_SUBST([GNULIB_WCSCOLL])
GNULIB_WCSXFRM=0; AC_SUBST([GNULIB_WCSXFRM])
GNULIB_WCSDUP=0; AC_SUBST([GNULIB_WCSDUP])
GNULIB_WCSCHR=0; AC_SUBST([GNULIB_WCSCHR])
GNULIB_WCSRCHR=0; AC_SUBST([GNULIB_WCSRCHR])
GNULIB_WCSCSPN=0; AC_SUBST([GNULIB_WCSCSPN])
GNULIB_WCSSPN=0; AC_SUBST([GNULIB_WCSSPN])
GNULIB_WCSPBRK=0; AC_SUBST([GNULIB_WCSPBRK])
GNULIB_WCSSTR=0; AC_SUBST([GNULIB_WCSSTR])
GNULIB_WCSTOK=0; AC_SUBST([GNULIB_WCSTOK])
GNULIB_WCSWIDTH=0; AC_SUBST([GNULIB_WCSWIDTH])
GNULIB_WCSFTIME=0; AC_SUBST([GNULIB_WCSFTIME])
dnl Support Microsoft deprecated alias function names by default.
GNULIB_MDA_WCSDUP=1; AC_SUBST([GNULIB_MDA_WCSDUP])
dnl Assume proper GNU behavior unless another module says otherwise.
HAVE_BTOWC=1; AC_SUBST([HAVE_BTOWC])
HAVE_MBSINIT=1; AC_SUBST([HAVE_MBSINIT])
HAVE_MBRTOWC=1; AC_SUBST([HAVE_MBRTOWC])
HAVE_MBRLEN=1; AC_SUBST([HAVE_MBRLEN])
HAVE_MBSRTOWCS=1; AC_SUBST([HAVE_MBSRTOWCS])
HAVE_MBSNRTOWCS=1; AC_SUBST([HAVE_MBSNRTOWCS])
HAVE_WCRTOMB=1; AC_SUBST([HAVE_WCRTOMB])
HAVE_WCSRTOMBS=1; AC_SUBST([HAVE_WCSRTOMBS])
HAVE_WCSNRTOMBS=1; AC_SUBST([HAVE_WCSNRTOMBS])
HAVE_WMEMCHR=1; AC_SUBST([HAVE_WMEMCHR])
HAVE_WMEMCMP=1; AC_SUBST([HAVE_WMEMCMP])
HAVE_WMEMCPY=1; AC_SUBST([HAVE_WMEMCPY])
HAVE_WMEMMOVE=1; AC_SUBST([HAVE_WMEMMOVE])
HAVE_WMEMPCPY=1; AC_SUBST([HAVE_WMEMPCPY])
HAVE_WMEMSET=1; AC_SUBST([HAVE_WMEMSET])
HAVE_WCSLEN=1; AC_SUBST([HAVE_WCSLEN])
HAVE_WCSNLEN=1; AC_SUBST([HAVE_WCSNLEN])
HAVE_WCSCPY=1; AC_SUBST([HAVE_WCSCPY])
HAVE_WCPCPY=1; AC_SUBST([HAVE_WCPCPY])
HAVE_WCSNCPY=1; AC_SUBST([HAVE_WCSNCPY])
HAVE_WCPNCPY=1; AC_SUBST([HAVE_WCPNCPY])
HAVE_WCSCAT=1; AC_SUBST([HAVE_WCSCAT])
HAVE_WCSNCAT=1; AC_SUBST([HAVE_WCSNCAT])
HAVE_WCSCMP=1; AC_SUBST([HAVE_WCSCMP])
HAVE_WCSNCMP=1; AC_SUBST([HAVE_WCSNCMP])
HAVE_WCSCASECMP=1; AC_SUBST([HAVE_WCSCASECMP])
HAVE_WCSNCASECMP=1; AC_SUBST([HAVE_WCSNCASECMP])
HAVE_WCSCOLL=1; AC_SUBST([HAVE_WCSCOLL])
HAVE_WCSXFRM=1; AC_SUBST([HAVE_WCSXFRM])
HAVE_WCSDUP=1; AC_SUBST([HAVE_WCSDUP])
HAVE_WCSCHR=1; AC_SUBST([HAVE_WCSCHR])
HAVE_WCSRCHR=1; AC_SUBST([HAVE_WCSRCHR])
HAVE_WCSCSPN=1; AC_SUBST([HAVE_WCSCSPN])
HAVE_WCSSPN=1; AC_SUBST([HAVE_WCSSPN])
HAVE_WCSPBRK=1; AC_SUBST([HAVE_WCSPBRK])
HAVE_WCSSTR=1; AC_SUBST([HAVE_WCSSTR])
HAVE_WCSTOK=1; AC_SUBST([HAVE_WCSTOK])
HAVE_WCSWIDTH=1; AC_SUBST([HAVE_WCSWIDTH])
HAVE_WCSFTIME=1; AC_SUBST([HAVE_WCSFTIME])
HAVE_DECL_WCTOB=1; AC_SUBST([HAVE_DECL_WCTOB])
HAVE_DECL_WCSDUP=1; AC_SUBST([HAVE_DECL_WCSDUP])
HAVE_DECL_WCWIDTH=1; AC_SUBST([HAVE_DECL_WCWIDTH])
REPLACE_MBSTATE_T=0; AC_SUBST([REPLACE_MBSTATE_T])
REPLACE_BTOWC=0; AC_SUBST([REPLACE_BTOWC])
REPLACE_WCTOB=0; AC_SUBST([REPLACE_WCTOB])
REPLACE_MBSINIT=0; AC_SUBST([REPLACE_MBSINIT])
REPLACE_MBRTOWC=0; AC_SUBST([REPLACE_MBRTOWC])
REPLACE_MBRLEN=0; AC_SUBST([REPLACE_MBRLEN])
REPLACE_MBSRTOWCS=0; AC_SUBST([REPLACE_MBSRTOWCS])
REPLACE_MBSNRTOWCS=0; AC_SUBST([REPLACE_MBSNRTOWCS])
REPLACE_WCRTOMB=0; AC_SUBST([REPLACE_WCRTOMB])
REPLACE_WCSRTOMBS=0; AC_SUBST([REPLACE_WCSRTOMBS])
REPLACE_WCSNRTOMBS=0; AC_SUBST([REPLACE_WCSNRTOMBS])
REPLACE_WCWIDTH=0; AC_SUBST([REPLACE_WCWIDTH])
REPLACE_WCSWIDTH=0; AC_SUBST([REPLACE_WCSWIDTH])
REPLACE_WCSFTIME=0; AC_SUBST([REPLACE_WCSFTIME])
REPLACE_WCSTOK=0; AC_SUBST([REPLACE_WCSTOK])
])
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