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comparison m4/wchar.m4 @ 434:b8bf63962a99 3.0

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Added various generated files for release
author lost@l-w.ca
date Fri, 29 Oct 2010 19:20:39 -0600
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433:b142b473f0ee 434:b8bf63962a99
1 dnl A placeholder for ISO C99 <wchar.h>, for platforms that have issues.
2
3 dnl Copyright (C) 2007-2010 Free Software Foundation, Inc.
4 dnl This file is free software; the Free Software Foundation
5 dnl gives unlimited permission to copy and/or distribute it,
6 dnl with or without modifications, as long as this notice is preserved.
7
8 dnl Written by Eric Blake.
9
10 # wchar.m4 serial 30
11
12 AC_DEFUN([gl_WCHAR_H],
13 [
14 AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
15 AC_REQUIRE([gl_WCHAR_H_INLINE_OK])
16 dnl Prepare for creating substitute <wchar.h>.
17 dnl Check for <wchar.h> (missing in Linux uClibc when built without wide
18 dnl character support).
19 dnl <wchar.h> is always overridden, because of GNULIB_POSIXCHECK.
20 AC_CHECK_HEADERS_ONCE([wchar.h])
21 gl_CHECK_NEXT_HEADERS([wchar.h])
22 if test $ac_cv_header_wchar_h = yes; then
23 HAVE_WCHAR_H=1
24 else
25 HAVE_WCHAR_H=0
26 fi
27 AC_SUBST([HAVE_WCHAR_H])
28
29 AC_REQUIRE([gt_TYPE_WINT_T])
30 if test $gt_cv_c_wint_t = yes; then
31 HAVE_WINT_T=1
32 else
33 HAVE_WINT_T=0
34 fi
35 AC_SUBST([HAVE_WINT_T])
36 ])
37
38 dnl Check whether <wchar.h> is usable at all.
39 AC_DEFUN([gl_WCHAR_H_INLINE_OK],
40 [
41 dnl Test whether <wchar.h> suffers due to the transition from '__inline' to
42 dnl 'gnu_inline'. See <http://sourceware.org/bugzilla/show_bug.cgi?id=4022>
43 dnl and <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42440>. In summary,
44 dnl glibc version 2.5 or older, together with gcc version 4.3 or newer and
45 dnl the option -std=c99 or -std=gnu99, leads to a broken <wchar.h>.
46 AC_CACHE_CHECK([whether <wchar.h> uses 'inline' correctly],
47 [gl_cv_header_wchar_h_correct_inline],
48 [gl_cv_header_wchar_h_correct_inline=yes
49 AC_LANG_CONFTEST([
50 AC_LANG_SOURCE([[#define wcstod renamed_wcstod
51 #include <wchar.h>
52 extern int zero (void);
53 int main () { return zero(); }
54 ]])])
55 if AC_TRY_EVAL([ac_compile]); then
56 mv conftest.$ac_objext conftest1.$ac_objext
57 AC_LANG_CONFTEST([
58 AC_LANG_SOURCE([[#define wcstod renamed_wcstod
59 #include <wchar.h>
60 int zero (void) { return 0; }
61 ]])])
62 if AC_TRY_EVAL([ac_compile]); then
63 mv conftest.$ac_objext conftest2.$ac_objext
64 if $CC -o conftest$ac_exeext $CFLAGS $LDFLAGS conftest1.$ac_objext conftest2.$ac_objext $LIBS >&AS_MESSAGE_LOG_FD 2>&1; then
65 :
66 else
67 gl_cv_header_wchar_h_correct_inline=no
68 fi
69 fi
70 fi
71 rm -f conftest1.$ac_objext conftest2.$ac_objext conftest$ac_exeext
72 ])
73 if test $gl_cv_header_wchar_h_correct_inline = no; then
74 AC_MSG_ERROR([<wchar.h> cannot be used with this compiler ($CC $CFLAGS $CPPFLAGS).
75 This is a known interoperability problem of glibc <= 2.5 with gcc >= 4.3 in
76 C99 mode. You have four options:
77 - Add the flag -fgnu89-inline to CC and reconfigure, or
78 - Fix your include files, using parts of
79 <http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=b037a293a48718af30d706c2e18c929d0e69a621>, or
80 - Use a gcc version older than 4.3, or
81 - Don't use the flags -std=c99 or -std=gnu99.
82 Configuration aborted.])
83 fi
84 ])
85
86 dnl Unconditionally enables the replacement of <wchar.h>.
87 AC_DEFUN([gl_REPLACE_WCHAR_H],
88 [
89 dnl This is a no-op, because <wchar.h> is always overridden.
90 :
91 ])
92
93 AC_DEFUN([gl_WCHAR_MODULE_INDICATOR],
94 [
95 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
96 AC_REQUIRE([gl_WCHAR_H_DEFAULTS])
97 GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
98 ])
99
100 AC_DEFUN([gl_WCHAR_H_DEFAULTS],
101 [
102 GNULIB_BTOWC=0; AC_SUBST([GNULIB_BTOWC])
103 GNULIB_WCTOB=0; AC_SUBST([GNULIB_WCTOB])
104 GNULIB_MBSINIT=0; AC_SUBST([GNULIB_MBSINIT])
105 GNULIB_MBRTOWC=0; AC_SUBST([GNULIB_MBRTOWC])
106 GNULIB_MBRLEN=0; AC_SUBST([GNULIB_MBRLEN])
107 GNULIB_MBSRTOWCS=0; AC_SUBST([GNULIB_MBSRTOWCS])
108 GNULIB_MBSNRTOWCS=0; AC_SUBST([GNULIB_MBSNRTOWCS])
109 GNULIB_WCRTOMB=0; AC_SUBST([GNULIB_WCRTOMB])
110 GNULIB_WCSRTOMBS=0; AC_SUBST([GNULIB_WCSRTOMBS])
111 GNULIB_WCSNRTOMBS=0; AC_SUBST([GNULIB_WCSNRTOMBS])
112 GNULIB_WCWIDTH=0; AC_SUBST([GNULIB_WCWIDTH])
113 dnl Assume proper GNU behavior unless another module says otherwise.
114 HAVE_BTOWC=1; AC_SUBST([HAVE_BTOWC])
115 HAVE_MBSINIT=1; AC_SUBST([HAVE_MBSINIT])
116 HAVE_MBRTOWC=1; AC_SUBST([HAVE_MBRTOWC])
117 HAVE_MBRLEN=1; AC_SUBST([HAVE_MBRLEN])
118 HAVE_MBSRTOWCS=1; AC_SUBST([HAVE_MBSRTOWCS])
119 HAVE_MBSNRTOWCS=1; AC_SUBST([HAVE_MBSNRTOWCS])
120 HAVE_WCRTOMB=1; AC_SUBST([HAVE_WCRTOMB])
121 HAVE_WCSRTOMBS=1; AC_SUBST([HAVE_WCSRTOMBS])
122 HAVE_WCSNRTOMBS=1; AC_SUBST([HAVE_WCSNRTOMBS])
123 HAVE_DECL_WCTOB=1; AC_SUBST([HAVE_DECL_WCTOB])
124 HAVE_DECL_WCWIDTH=1; AC_SUBST([HAVE_DECL_WCWIDTH])
125 REPLACE_MBSTATE_T=0; AC_SUBST([REPLACE_MBSTATE_T])
126 REPLACE_BTOWC=0; AC_SUBST([REPLACE_BTOWC])
127 REPLACE_WCTOB=0; AC_SUBST([REPLACE_WCTOB])
128 REPLACE_MBSINIT=0; AC_SUBST([REPLACE_MBSINIT])
129 REPLACE_MBRTOWC=0; AC_SUBST([REPLACE_MBRTOWC])
130 REPLACE_MBRLEN=0; AC_SUBST([REPLACE_MBRLEN])
131 REPLACE_MBSRTOWCS=0; AC_SUBST([REPLACE_MBSRTOWCS])
132 REPLACE_MBSNRTOWCS=0; AC_SUBST([REPLACE_MBSNRTOWCS])
133 REPLACE_WCRTOMB=0; AC_SUBST([REPLACE_WCRTOMB])
134 REPLACE_WCSRTOMBS=0; AC_SUBST([REPLACE_WCSRTOMBS])
135 REPLACE_WCSNRTOMBS=0; AC_SUBST([REPLACE_WCSNRTOMBS])
136 REPLACE_WCWIDTH=0; AC_SUBST([REPLACE_WCWIDTH])
137 ])