Hi Albert,
> Why does lib/wchar.in.h have:
> #ifndef _GL_WCHAR_H
> ...
> #ifndef _GL_WCHAR_H
> #define _GL_WCHAR_H
> rather than just:
> #ifndef _GL_WCHAR_H
> #define _GL_WCHAR_H
This is the necessary idiom when using #include_next.
> This causes a problem on HP-UX 11.00 because <wchar.h> is included more
> than once.
> $ ./gnulib-tool --create-testdir --dir=t arpa_inet crypto/md5 \
> environ filemode fnmatch fnmatch-gnu getdate gettext glob human \
> iconv_open inet_pton lstat mbswidth memmem mktime modechange poll \
> regex socklen strcase strftime strptime strtok_r vsnprintf \
> vsnprintf-posix wcwidth
> $ cd t
> $ ./configure
> $ gmake
> ...
> cc -DHAVE_CONFIG_H -I. -I.. -I../intl -g -c -o btowc.o btowc.c
> cc: "wchar.h", line 124: error 1000: Unexpected symbol: "btowc".
> cc: panic 2017: Cannot recover from earlier errors, terminating.
> gmake[4]: *** [btowc.o] Error 1
>
> $ cd gllib
>
> $ cc -DHAVE_CONFIG_H -I. -I.. -I../intl -g -E btowc.c | grep wchar.h
> # 1 "./wchar.h"
> # 49 "./wchar.h"
> # 50 "./wchar.h"
> # 51 "./wchar.h"
> # 1 "///usr/include/wchar.h"
> # 33 "///usr/include/wchar.h"
> # 1 "./wchar.h"
> # 49 "./wchar.h"
> # 50 "./wchar.h"
> # 51 "./wchar.h"
> # 1 "///usr/include/wchar.h"
> # 57 "./wchar.h"
> # 1 "./wchar.h"
> # 42 "///usr/include/wchar.h"
> # 57 "./wchar.h"
I reproduce. But I needed to look at the entire preprocessed output in order
to understand what happens. Fixed as follows:
2009-01-14 Bruno Haible <br...@clisp.org>
* lib/stdint.in.h (_GL_JUST_INCLUDE_SYSTEM_WCHAR_H): New macro, defined
while including <wchar.h>.
* lib/wchar.in.h: In two particular situations on HP-UX, include only
the system's <wchar.h> file.
Reported by Albert Chin <bug-gnu...@mlists.thewrittenword.com>.
--- lib/stdint.in.h.orig 2009-01-15 00:21:46.000000000 +0100
+++ lib/stdint.in.h 2009-01-15 00:02:16.000000000 +0100
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001-2002, 2004-2008 Free Software Foundation, Inc.
+/* Copyright (C) 2001-2002, 2004-2009 Free Software Foundation, Inc.
Written by Paul Eggert, Bruno Haible, Sam Steingold, Peter Burwood.
This file is part of gnulib.
@@ -478,7 +478,9 @@
includes <wchar.h> -> <stdio.h> -> <getopt.h> -> <stdlib.h>, and the latter
includes
<stdint.h> and assumes its types are already defined. */
#if ! (defined WCHAR_MIN && defined WCHAR_MAX)
+# define _GL_JUST_INCLUDE_SYSTEM_WCHAR_H
# include <wchar.h>
+# undef _GL_JUST_INCLUDE_SYSTEM_WCHAR_H
#endif
#undef WCHAR_MIN
#undef WCHAR_MAX
--- lib/wchar.in.h.orig 2009-01-15 00:21:46.000000000 +0100
+++ lib/wchar.in.h 2009-01-15 00:20:59.000000000 +0100
@@ -1,6 +1,6 @@
/* A substitute for ISO C99 <wchar.h>, for platforms that have issues.
- Copyright (C) 2007-2008 Free Software Foundation, Inc.
+ Copyright (C) 2007-2009 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -30,8 +30,15 @@
@PRAGMA_SYSTEM_HEADER@
#endif
-#ifdef __need_mbstate_t
-/* Special invocation convention inside uClibc header files. */
+#if defined __need_mbstate_t || (defined __hpux && ((defined
_INTTYPES_INCLUDED && !defined strtoimax) || defined
_GL_JUST_INCLUDE_SYSTEM_WCHAR_H))
+/* Special invocation convention:
+ - Inside uClibc header files.
+ - On HP-UX 11.00 we have a sequence of nested includes
+ <wchar.h> -> <stdlib.h> -> <stdint.h>, and the latter includes <wchar.h>,
+ once indirectly <stdint.h> -> <sys/types.h> -> <inttypes.h> -> <wchar.h>
+ and once directly. In both situations 'wint_t' is not yet defined,
+ therefore we cannot provide the function overrides; instead include only
+ the system's <wchar.h>. */
#...@include_next@ @NEXT_WCHAR_H@
