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On 2023-01-28 21:04, Eli Zaretskii (eliz AT gnu DOT org) [via djgpp AT delorie DOT com] wrote:
>> Date: Sat, 28 Jan 2023 19:12:06 +0100
>> From: "J.W. Jagersma (jwjagersma AT gmail DOT com) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
>>
>>> No, in a native installation libgcc and libstdc++ are in a directory
>>> different from libc.  We just didn't support linking against those two
>>> libraries because AFAIU it was never needed by anyone, definitely in
>>> the case of libstdc++.
>>
>> On my end, libc and libstdc++ are in %DJDIR%\lib\.  But I see libgcc is in
>> %DJDIR%\lib\gcc\djgpp\12\.
> 
> libgcc should be in a version-specific directory under either lib/gcc
> or lib/gcc-lib.   libstdc++ is normally also in that subdirectory, I
> don't know why you have it in lib.  It is version-specific, so cannot
> be in the general lib directory.

That would indicate a problem (?) with the recent gpp*b.zip packages then.
From 4.7.4 on, they all come with libstdcxx.a in lib/.

>> It is probably possible to configure gcc/libstdc++ to place these in any
>> arbitrary location.  I think it's best if dxe3gen and makefile writers have no
>> knowledge of a user's particular configuration, and simply leave it to gcc to
>> figure it out.
> 
> Yes, that's true.  No argument there.  I'm just saying that if someone
> has some unusual (read: crazy) non-standard configuration, where
> libraries can be found via these two environment variables, we
> shouldn't break those unusual configurations.

If you think it should be kept, then I won't object too much.  A duplicate -L
entry indeed does no harm.  I'm just saying it's completely redundant - native
gcc will not work with an invalid DJDIR, and it will always put %DJDIR%/lib in
the default library path.