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author | Thomas Guyot-Sionnest <dermoth@aei.ca> | 2010-04-07 21:11:46 -0400 |
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committer | Thomas Guyot-Sionnest <dermoth@aei.ca> | 2010-04-12 21:26:35 -0400 |
commit | 74da141e618ef99959d509cb2e7be35a348a39db (patch) | |
tree | 88ebc38b381a1021fc2d74864a71e230ae591c3d /gl/m4/wchar_h.m4 | |
parent | c63a4f726a0b6ad8cf6040f947754a81fd4683bb (diff) | |
download | monitoring-plugins-74da141e618ef99959d509cb2e7be35a348a39db.tar.gz |
Sync with the latest Gnulib code (177f525)
Signed-off-by: Thomas Guyot-Sionnest <dermoth@aei.ca>
Diffstat (limited to 'gl/m4/wchar_h.m4')
-rw-r--r-- | gl/m4/wchar_h.m4 | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/gl/m4/wchar_h.m4 b/gl/m4/wchar_h.m4 new file mode 100644 index 00000000..8cae82dd --- /dev/null +++ b/gl/m4/wchar_h.m4 | |||
@@ -0,0 +1,152 @@ | |||
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_h.m4 serial 33 | ||
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 $gt_cv_c_wint_t = yes; then | ||
31 | HAVE_WINT_T=1 | ||
32 | else | ||
33 | HAVE_WINT_T=0 | ||
34 | fi | ||
35 | AC_SUBST([HAVE_WINT_T]) | ||
36 | |||
37 | dnl Check for declarations of anything we want to poison if the | ||
38 | dnl corresponding gnulib module is not in use. | ||
39 | gl_WARN_ON_USE_PREPARE([[ | ||
40 | /* Some systems require additional headers. */ | ||
41 | #ifndef __GLIBC__ | ||
42 | # include <stddef.h> | ||
43 | # include <stdio.h> | ||
44 | # include <time.h> | ||
45 | #endif | ||
46 | #include <wchar.h> | ||
47 | ]], [btowc wctob mbsinit mbrtowc mbrlen mbsrtowcs mbsnrtowcs wcrtomb | ||
48 | wcsrtombs wcsnrtombs wcwidth]) | ||
49 | ]) | ||
50 | |||
51 | dnl Check whether <wchar.h> is usable at all. | ||
52 | AC_DEFUN([gl_WCHAR_H_INLINE_OK], | ||
53 | [ | ||
54 | dnl Test whether <wchar.h> suffers due to the transition from '__inline' to | ||
55 | dnl 'gnu_inline'. See <http://sourceware.org/bugzilla/show_bug.cgi?id=4022> | ||
56 | dnl and <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42440>. In summary, | ||
57 | dnl glibc version 2.5 or older, together with gcc version 4.3 or newer and | ||
58 | dnl the option -std=c99 or -std=gnu99, leads to a broken <wchar.h>. | ||
59 | AC_CACHE_CHECK([whether <wchar.h> uses 'inline' correctly], | ||
60 | [gl_cv_header_wchar_h_correct_inline], | ||
61 | [gl_cv_header_wchar_h_correct_inline=yes | ||
62 | AC_LANG_CONFTEST([ | ||
63 | AC_LANG_SOURCE([[#define wcstod renamed_wcstod | ||
64 | #include <wchar.h> | ||
65 | extern int zero (void); | ||
66 | int main () { return zero(); } | ||
67 | ]])]) | ||
68 | if AC_TRY_EVAL([ac_compile]); then | ||
69 | mv conftest.$ac_objext conftest1.$ac_objext | ||
70 | AC_LANG_CONFTEST([ | ||
71 | AC_LANG_SOURCE([[#define wcstod renamed_wcstod | ||
72 | #include <wchar.h> | ||
73 | int zero (void) { return 0; } | ||
74 | ]])]) | ||
75 | if AC_TRY_EVAL([ac_compile]); then | ||
76 | mv conftest.$ac_objext conftest2.$ac_objext | ||
77 | if $CC -o conftest$ac_exeext $CFLAGS $LDFLAGS conftest1.$ac_objext conftest2.$ac_objext $LIBS >&AS_MESSAGE_LOG_FD 2>&1; then | ||
78 | : | ||
79 | else | ||
80 | gl_cv_header_wchar_h_correct_inline=no | ||
81 | fi | ||
82 | fi | ||
83 | fi | ||
84 | rm -f conftest1.$ac_objext conftest2.$ac_objext conftest$ac_exeext | ||
85 | ]) | ||
86 | if test $gl_cv_header_wchar_h_correct_inline = no; then | ||
87 | AC_MSG_ERROR([<wchar.h> cannot be used with this compiler ($CC $CFLAGS $CPPFLAGS). | ||
88 | This is a known interoperability problem of glibc <= 2.5 with gcc >= 4.3 in | ||
89 | C99 mode. You have four options: | ||
90 | - Add the flag -fgnu89-inline to CC and reconfigure, or | ||
91 | - Fix your include files, using parts of | ||
92 | <http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=b037a293a48718af30d706c2e18c929d0e69a621>, or | ||
93 | - Use a gcc version older than 4.3, or | ||
94 | - Don't use the flags -std=c99 or -std=gnu99. | ||
95 | Configuration aborted.]) | ||
96 | fi | ||
97 | ]) | ||
98 | |||
99 | dnl Unconditionally enables the replacement of <wchar.h>. | ||
100 | AC_DEFUN([gl_REPLACE_WCHAR_H], | ||
101 | [ | ||
102 | dnl This is a no-op, because <wchar.h> is always overridden. | ||
103 | : | ||
104 | ]) | ||
105 | |||
106 | AC_DEFUN([gl_WCHAR_MODULE_INDICATOR], | ||
107 | [ | ||
108 | dnl Use AC_REQUIRE here, so that the default settings are expanded once only. | ||
109 | AC_REQUIRE([gl_WCHAR_H_DEFAULTS]) | ||
110 | gl_MODULE_INDICATOR_SET_VARIABLE([$1]) | ||
111 | dnl Define it also as a C macro, for the benefit of the unit tests. | ||
112 | gl_MODULE_INDICATOR_FOR_TESTS([$1]) | ||
113 | ]) | ||
114 | |||
115 | AC_DEFUN([gl_WCHAR_H_DEFAULTS], | ||
116 | [ | ||
117 | GNULIB_BTOWC=0; AC_SUBST([GNULIB_BTOWC]) | ||
118 | GNULIB_WCTOB=0; AC_SUBST([GNULIB_WCTOB]) | ||
119 | GNULIB_MBSINIT=0; AC_SUBST([GNULIB_MBSINIT]) | ||
120 | GNULIB_MBRTOWC=0; AC_SUBST([GNULIB_MBRTOWC]) | ||
121 | GNULIB_MBRLEN=0; AC_SUBST([GNULIB_MBRLEN]) | ||
122 | GNULIB_MBSRTOWCS=0; AC_SUBST([GNULIB_MBSRTOWCS]) | ||
123 | GNULIB_MBSNRTOWCS=0; AC_SUBST([GNULIB_MBSNRTOWCS]) | ||
124 | GNULIB_WCRTOMB=0; AC_SUBST([GNULIB_WCRTOMB]) | ||
125 | GNULIB_WCSRTOMBS=0; AC_SUBST([GNULIB_WCSRTOMBS]) | ||
126 | GNULIB_WCSNRTOMBS=0; AC_SUBST([GNULIB_WCSNRTOMBS]) | ||
127 | GNULIB_WCWIDTH=0; AC_SUBST([GNULIB_WCWIDTH]) | ||
128 | dnl Assume proper GNU behavior unless another module says otherwise. | ||
129 | HAVE_BTOWC=1; AC_SUBST([HAVE_BTOWC]) | ||
130 | HAVE_MBSINIT=1; AC_SUBST([HAVE_MBSINIT]) | ||
131 | HAVE_MBRTOWC=1; AC_SUBST([HAVE_MBRTOWC]) | ||
132 | HAVE_MBRLEN=1; AC_SUBST([HAVE_MBRLEN]) | ||
133 | HAVE_MBSRTOWCS=1; AC_SUBST([HAVE_MBSRTOWCS]) | ||
134 | HAVE_MBSNRTOWCS=1; AC_SUBST([HAVE_MBSNRTOWCS]) | ||
135 | HAVE_WCRTOMB=1; AC_SUBST([HAVE_WCRTOMB]) | ||
136 | HAVE_WCSRTOMBS=1; AC_SUBST([HAVE_WCSRTOMBS]) | ||
137 | HAVE_WCSNRTOMBS=1; AC_SUBST([HAVE_WCSNRTOMBS]) | ||
138 | HAVE_DECL_WCTOB=1; AC_SUBST([HAVE_DECL_WCTOB]) | ||
139 | HAVE_DECL_WCWIDTH=1; AC_SUBST([HAVE_DECL_WCWIDTH]) | ||
140 | REPLACE_MBSTATE_T=0; AC_SUBST([REPLACE_MBSTATE_T]) | ||
141 | REPLACE_BTOWC=0; AC_SUBST([REPLACE_BTOWC]) | ||
142 | REPLACE_WCTOB=0; AC_SUBST([REPLACE_WCTOB]) | ||
143 | REPLACE_MBSINIT=0; AC_SUBST([REPLACE_MBSINIT]) | ||
144 | REPLACE_MBRTOWC=0; AC_SUBST([REPLACE_MBRTOWC]) | ||
145 | REPLACE_MBRLEN=0; AC_SUBST([REPLACE_MBRLEN]) | ||
146 | REPLACE_MBSRTOWCS=0; AC_SUBST([REPLACE_MBSRTOWCS]) | ||
147 | REPLACE_MBSNRTOWCS=0; AC_SUBST([REPLACE_MBSNRTOWCS]) | ||
148 | REPLACE_WCRTOMB=0; AC_SUBST([REPLACE_WCRTOMB]) | ||
149 | REPLACE_WCSRTOMBS=0; AC_SUBST([REPLACE_WCSRTOMBS]) | ||
150 | REPLACE_WCSNRTOMBS=0; AC_SUBST([REPLACE_WCSNRTOMBS]) | ||
151 | REPLACE_WCWIDTH=0; AC_SUBST([REPLACE_WCWIDTH]) | ||
152 | ]) | ||