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trader/m4/wchar_h.m4
John Zaitseff f265336d3b Add all auto-generated files 
All auto-generated files are created by running ./build-aux/bootstrap
with Gnulib as at commit a7967a2cf0998b6c157c7cf8e1d8d9d11dab30b0 (with a
date stamp of Thu Mar 15 08:46:29 2012 -0700), Autoconf 2.68, Automake
1.11.3 and Gettext 0.18.1.1.
2012-03-16 11:30:07 +11:00

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dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues.
dnl Copyright (C) 2007-2012 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 39
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 $gt_cv_c_wint_t = yes; then
HAVE_WINT_T=1
else
HAVE_WINT_T=0
fi
AC_SUBST([HAVE_WINT_T])
dnl Check for declarations of anything we want to poison if the
dnl corresponding gnulib module is not in use.
gl_WARN_ON_USE_PREPARE([[
/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
<wchar.h>.
BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
included before <wchar.h>. */
#if !(defined __GLIBC__ && !defined __UCLIBC__)
# include <stddef.h>
# include <stdio.h>
# include <time.h>
#endif
#include <wchar.h>
]],
[btowc wctob mbsinit mbrtowc mbrlen mbsrtowcs mbsnrtowcs wcrtomb
wcsrtombs wcsnrtombs wcwidth wmemchr wmemcmp wmemcpy wmemmove wmemset
wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat wcscmp
wcsncmp wcscasecmp wcsncasecmp wcscoll wcsxfrm wcsdup wcschr wcsrchr
wcscspn wcsspn wcspbrk wcsstr wcstok wcswidth
])
])
dnl Check whether <wchar.h> is usable at all.
AC_DEFUN([gl_WCHAR_H_INLINE_OK],
[
dnl Test whether <wchar.h> suffers due to the transition from '__inline' to
dnl 'gnu_inline'. See <http://sourceware.org/bugzilla/show_bug.cgi?id=4022>
dnl and <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42440>. In summary,
dnl glibc version 2.5 or older, together with gcc version 4.3 or newer and
dnl the option -std=c99 or -std=gnu99, leads to a broken <wchar.h>.
AC_CACHE_CHECK([whether <wchar.h> uses 'inline' correctly],
[gl_cv_header_wchar_h_correct_inline],
[gl_cv_header_wchar_h_correct_inline=yes
AC_LANG_CONFTEST([
AC_LANG_SOURCE([[#define wcstod renamed_wcstod
/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
<wchar.h>.
BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
included before <wchar.h>. */
#include <stddef.h>
#include <stdio.h>
#include <time.h>
#include <wchar.h>
extern int zero (void);
int main () { return zero(); }
]])])
if AC_TRY_EVAL([ac_compile]); then
mv conftest.$ac_objext conftest1.$ac_objext
AC_LANG_CONFTEST([
AC_LANG_SOURCE([[#define wcstod renamed_wcstod
/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
<wchar.h>.
BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
included before <wchar.h>. */
#include <stddef.h>
#include <stdio.h>
#include <time.h>
#include <wchar.h>
int zero (void) { return 0; }
]])])
if AC_TRY_EVAL([ac_compile]); then
mv conftest.$ac_objext conftest2.$ac_objext
if $CC -o conftest$ac_exeext $CFLAGS $LDFLAGS conftest1.$ac_objext conftest2.$ac_objext $LIBS >&AS_MESSAGE_LOG_FD 2>&1; then
:
else
gl_cv_header_wchar_h_correct_inline=no
fi
fi
fi
rm -f conftest1.$ac_objext conftest2.$ac_objext conftest$ac_exeext
])
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
<http://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_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])
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_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_DECL_WCTOB=1; AC_SUBST([HAVE_DECL_WCTOB])
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])
])
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