Re: w32 build fails with mingw runtime 3.6

[Alejandro López-Valencia]

On 13/01/2005 03:32 p.m., Eli Zaretskii wrote:
> > Date: Thu, 13 Jan 2005 07:50:41 -0500
> > From: =?ISO-8859-15?Q?Alejandro_L=F3pez-Valencia?= <address@hidden>
> >
> > Mingw Runtime 3.6 provides definitions for S_ISLNK, _S_ISLNK, S_IFLNK,
> > _S_IFLNK and _lstat. Most of these definitions are non-functional, and
> > break fileio.c.
>
>
> How does the MinGW runtime define these macros and _lstat, what
> exactly is non-functional about them, and why did they introduce those
> definitions?  Surely they didn't want to provide a non-functional
> symlink support, did they?
>
> I'm asking these questions because the answers might suggest what
> would be the best way of dealing with these new misfeatures.
>
> TIA

That's information that you may have more luck in extracting from them 
than I ever would. My past interactions have been less than contructive.

To give you an idea, these are the changes done to sys/stat.h, as you'll 
notice they did add the stat functions to the runtime library, but the 
ISLNK and IFLNK macros are dummies:

diff -r -u mingw-old/sys/stat.h mingw/sys/stat.h
--- mingw-old/sys/stat.h        2004-09-05 09:19:00.001000000 -0500
+++ mingw/sys/stat.h    2005-01-02 11:17:54.001000000 -0500
@@ -26,6 +26,7 @@
 /*
  * Constants for the stat st_mode member.
  */
+#define _S_IFLNK       0xF000  /* Pretend */
 #define        _S_IFIFO        0x1000  /* FIFO */
 #define        _S_IFCHR        0x2000  /* Character */
 #define        _S_IFBLK        0x3000  /* Block: Is this ever set under w32? */
@@ -48,9 +49,11 @@
 #define        _S_ISCHR(m)     (((m) & _S_IFMT) == _S_IFCHR)
 #define        _S_ISBLK(m)     (((m) & _S_IFMT) == _S_IFBLK)
 #define        _S_ISREG(m)     (((m) & _S_IFMT) == _S_IFREG)
+#define _S_ISLNK(m)	(((m) & _S_IFMT) == _S_IFLNK) /* Should always be 
zero.*/

 #ifndef _NO_OLDNAMES

+#define S_IFLNK                _S_IFLNK
 #define        S_IFIFO         _S_IFIFO
 #define        S_IFCHR         _S_IFCHR
 #define        S_IFBLK         _S_IFBLK
@@ -70,6 +73,7 @@
 #define        S_ISCHR(m)      (((m) & S_IFMT) == S_IFCHR)
 #define        S_ISBLK(m)      (((m) & S_IFMT) == S_IFBLK)
 #define        S_ISREG(m)      (((m) & S_IFMT) == S_IFREG)
+#define S_ISLNK(m)     (((m) & S_IFMT) == S_IFLNK) /* Should always be zero.*/

 #endif /* Not _NO_OLDNAMES */

@@ -155,6 +159,7 @@
 _CRTIMP int __cdecl    _fstat (int, struct _stat*);
 _CRTIMP int __cdecl    _chmod (const char*, int);
 _CRTIMP int __cdecl    _stat (const char*, struct _stat*);
+#define _lstat _stat

 #ifndef        _NO_OLDNAMES

@@ -162,6 +167,7 @@
 _CRTIMP int __cdecl    fstat (int, struct stat*);
 _CRTIMP int __cdecl    chmod (const char*, int);
 _CRTIMP int __cdecl    stat (const char*, struct stat*);
+#define lstat stat

 #endif /* Not _NO_OLDNAMES */


--
Alejandro López-Valencia         <http://dradul.tripod.com/>

Lo que Natura non da, Salamanca non presta.
                                Francisco Quevedo y Villegas