GDB 7.5 on Windows (was: [commit/www] Announce the GDB 7.5 release.)

[Eli Zaretskii <eliz at gnu dot org>]

Thanks for releasing GDB 7.5.

In addition to the problem with "make TAGS", for which I already
committed an obvious fix, I had the following issues when building GDB
with MinGW natively on Windows:

1. Compilation in gdb/ produces gobs of warnings like this:

     In file included from defs.h:32,
		      from gdb.c:19:
     d:/usr/include/stdio.h:372: warning: no previous prototype for 'getc'
     d:/usr/include/stdio.h:379: warning: no previous prototype for 'putc'
     d:/usr/include/stdio.h:386: warning: no previous prototype for 'getchar'
     d:/usr/include/stdio.h:393: warning: no previous prototype for 'putchar'
     d:/usr/include/stdio.h:535: warning: no previous prototype for 'fopen64'
     d:/usr/include/stdio.h:547: warning: no previous prototype for 'ftello64'
     d:/usr/include/stdio.h:606: warning: no previous prototype for 'vsnwprintf'

   This happens because these are inline functions in MinGW's stdio.h,
   but their prototypes are only declared if the inline variants are
   not used.  For example:

     #if !defined _MT

     __CRT_INLINE int __cdecl __MINGW_NOTHROW getc (FILE* __F)
     {
       return (--__F->_cnt >= 0)
	 ?  (int) (unsigned char) *__F->_ptr++
	 : _filbuf (__F);
     }
     [...]
     #else  /* Use library functions.  */

     _CRTIMP int __cdecl __MINGW_NOTHROW	getc (FILE*);

   My suggestion would be to not use -Wmissing-prototypes when host is
   mingw32.  (I worked around this by using --enable-gdb-build-warnings.)

2. "make TAGS" displays a warning:

     $ make TAGS
     Making TAGS
     d:\usr\emacs\bin\etags.exe: skipping ./: it is not a regular file.

   I couldn't figure out what causes this.