Re: Time for a MinGW-GDB Upgrade?

Keith Marshall <[email protected]> Sat, 25 Jul 2020 12:12:32 +0100
Newsgroups	gmane.comp.gnu.mingw.user
Organization	MinGW.org Project
Message-ID	<[email protected]>
On 25/07/2020 07:01, Eli Zaretskii wrote:
>> From: Keith Marshall, Fri, 24 Jul 2020 21:37:10 +0100
>>
>>   $ gdb --config
>>   This GDB was configured as follows:
>>      configure --host=mingw32 --target=mingw32
>>         ...
>>         --with-python=C:/Python27
>>         ...
>>         --with-system-gdbinit=C:/MinGW/... (relocatable)
>>
>>   ("Relocatable" means the directory can be moved with the GDB
>>   installation tree, and GDB will still find it.)
>>
>> Note that "C:/Python27" is the default installation location, as set by
>> Python.org's MSI installer, (just as C:/MinGW is default for a MinGW
>> installation delivered by mingw-get).  It appears that it will remain at
>> C:/Python27, even if a MinGW GDB installation is relocated elsewhere;
>> (C:/Python27 is not identified as relocatable, by "gdb --config").
> 
> Strange,

Not really.

> it _is_ relocatable in my build of GDB 9.1:
> 
>   This GDB was configured as follows:
>      configure --host=i686-pc-mingw32 --target=i686-pc-mingw32
> 	       ...
> 	       --with-python=d:/usr/Python26 (relocatable)
> 	       ...
> 	       --with-system-gdbinit=d:/usr/etc/gdbinit (relocatable)

From the latter, I deduce that your GDB was configured with

   --prefix=d:/usr

and, when you installed Python, you also changed its default prefix from
C:/, to also place it under d:/usr ... which is fine; it is your choice
to make.  OTOH, _my_ GDB is configured with

   --prefix=C:/MinGW

(which is consistent with convention for _all_ packages distributed by
MinGW.org, as has been enshrined in project policy for years), whereas,
since Python is _not_ distributed by MinGW.org, so I've installed it in
the default prefix prescribed by _its_ distributor, equivalent to

   --prefix=C:/Python27

Since, in your case, the GDB and Python prefixes are the same, _your_
GDB views Python as bound to, and relocatable with, GDB.  OTOH, in my
case the two prefixes are not the same, so _my_ GDB views Python as
independent, and thus not relocatable with GDB.

-- 
Regards,
Keith.

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