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- dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues.
- dnl Copyright (C) 2007-2014 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.
- 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 $gt_cv_c_wint_t = yes; then
- HAVE_WINT_T=1
- else
- HAVE_WINT_T=0
- fi
- AC_SUBST([HAVE_WINT_T])
- dnl Check for declarations of anything we want to poison if the
- dnl corresponding gnulib module is not in use.
- gl_WARN_ON_USE_PREPARE([[
- ]],
- [btowc wctob mbsinit mbrtowc mbrlen mbsrtowcs mbsnrtowcs wcrtomb
- wcsrtombs wcsnrtombs wcwidth wmemchr wmemcmp wmemcpy wmemmove wmemset
- wcslen wcsnlen wcscpy wcpcpy wcsncpy wcpncpy wcscat wcsncat wcscmp
- wcsncmp wcscasecmp wcsncasecmp wcscoll wcsxfrm wcsdup wcschr wcsrchr
- wcscspn wcsspn wcspbrk wcsstr wcstok wcswidth
- ])
- ])
- dnl Check whether <wchar.h> is usable at all.
- AC_DEFUN([gl_WCHAR_H_INLINE_OK],
- [
- dnl Test whether <wchar.h> suffers due to the transition from '__inline' to
- dnl 'gnu_inline'. See <http://sourceware.org/bugzilla/show_bug.cgi?id=4022>
- dnl and <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42440>. In summary,
- dnl glibc version 2.5 or older, together with gcc version 4.3 or newer and
- dnl the option -std=c99 or -std=gnu99, leads to a broken <wchar.h>.
- AC_CACHE_CHECK([whether <wchar.h> uses 'inline' correctly],
- [gl_cv_header_wchar_h_correct_inline],
- [gl_cv_header_wchar_h_correct_inline=yes
- AC_LANG_CONFTEST([
- AC_LANG_SOURCE([[
- extern int zero (void);
- int main () { return zero(); }
- ]])])
- if AC_TRY_EVAL([ac_compile]); then
- mv conftest.$ac_objext conftest1.$ac_objext
- AC_LANG_CONFTEST([
- AC_LANG_SOURCE([[
- int zero (void) { return 0; }
- ]])])
- if AC_TRY_EVAL([ac_compile]); then
- mv conftest.$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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