From: claudio.bley@gmail.com (Claudio Bley)
To: emacs-devel@gnu.org
Subject: build fails with new MinGW wchar.h
Date: Wed, 20 Nov 2013 08:24:06 +0100 [thread overview]
Message-ID: <87d2lvv8mh.wl%claudio.bley@gmail.com> (raw)
Hi.
When trying to build emacs on w32 using the latest MinGW, the build
failed for some reason I can't remember (something about mbstate_t
being defined twice).
Basically, it was because configure determined that the MinGW headers
did not define mbstate_t in wchar.h which is actually wrong.
The configure test failed with this error message:
---------------------------------------------------------------------------------------------------------------
c:\mingw\include\wchar.h:816:32: error: conflicting types for '_wstat64i32'
__CRT_MAYBE_INLINE int __cdecl _wstat64i32(const wchar_t *fname, struct _stat64i32 *_stat)
^
c:\mingw\include\wchar.h:814:29: note: previous declaration of '_wstat64i32' was here
int __cdecl __MINGW_NOTHROW _wstat64i32 (const wchar_t*, struct _stat64i32*);
^
c:\mingw\include\wchar.h: In function '_wstat64i32':
c:\mingw\include\wchar.h:818:20: error: storage size of 'st' isn't known
struct _stat64 st;
^
c:\mingw\include\wchar.h:821:31: error: invalid application of 'sizeof' to incomplete type 'struct _stat64i32'
memset(_stat, 0, sizeof(struct _stat64i32));
^
c:\mingw\include\wchar.h:824:10: error: dereferencing pointer to incomplete type
_stat->st_dev = st.st_dev;
^
c:\mingw\include\wchar.h:825:10: error: dereferencing pointer to incomplete type
_stat->st_ino = st.st_ino;
^
c:\mingw\include\wchar.h:826:10: error: dereferencing pointer to incomplete type
_stat->st_mode = st.st_mode;
^
c:\mingw\include\wchar.h:827:10: error: dereferencing pointer to incomplete type
_stat->st_nlink = st.st_nlink;
^
c:\mingw\include\wchar.h:828:10: error: dereferencing pointer to incomplete type
_stat->st_uid = st.st_uid;
^
c:\mingw\include\wchar.h:829:10: error: dereferencing pointer to incomplete type
_stat->st_gid = st.st_gid;
^
c:\mingw\include\wchar.h:830:10: error: dereferencing pointer to incomplete type
_stat->st_rdev = st.st_rdev;
^
c:\mingw\include\wchar.h:831:10: error: dereferencing pointer to incomplete type
_stat->st_size = (_off_t) st.st_size;
^
c:\mingw\include\wchar.h:832:10: error: dereferencing pointer to incomplete type
_stat->st_atime = st.st_atime;
^
c:\mingw\include\wchar.h:833:10: error: dereferencing pointer to incomplete type
_stat->st_mtime = st.st_mtime;
...
---------------------------------------------------------------------------------------------------------------
The wchar.h header was installed from mingwrt-4.0.3-1-mingw32-dev:
,----[ wchar.h ]
| /**
| * @file wchar.h
| * Copyright 2012, 2013 MinGW.org project
`----
It duplicates definitions from sys/stat.h instead of including that file,
conflicting with the overrides from nt/inc/sys/stat.h if both are included:
,----[ wchar.h ]
| /* @TODO: Use sys/stat.h to define these instead of duplicated code. */
| #ifndef _STAT_DEFINED
| ...
| #endif
| ...
| #if !defined ( _WSTAT_DEFINED) /* also declared in sys/stat.h */
| ...
`----
This patch fixes it for me:
---- 8< -------- >8 ---------------- 8< ------------- >8 -------------
diff --git a/nt/inc/sys/stat.h b/nt/inc/sys/stat.h
index f1d8341..88352b1 100644
--- a/nt/inc/sys/stat.h
+++ b/nt/inc/sys/stat.h
@@ -23,6 +23,8 @@ along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
#ifdef __MINGW32__
# include <_mingw.h>
+# define _STAT_DEFINED
+# define _WSTAT_DEFINED
#endif
/* Only MinGW 3.13 and later has __MINGW_NOTHROW. */
---- 8< -------- >8 ---------------- 8< ------------- >8 -------------
--
Claudio
next reply other threads:[~2013-11-20 7:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-20 7:24 Claudio Bley [this message]
2013-11-20 18:15 ` build fails with new MinGW wchar.h Eli Zaretskii
2013-11-21 7:36 ` Claudio Bley
2013-11-21 17:36 ` Eli Zaretskii
2014-01-11 14:50 ` Eli Zaretskii
2014-01-14 10:28 ` Claudio Bley
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