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Date:	Sun, 17 May 2020 21:36:42 +0200
From:	"Juan Manuel Guerrero (juan DOT guerrero AT gmx DOT de) [via djgpp AT delorie DOT com]" <djgpp AT delorie DOT com>
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To:	djgpp AT delorie DOT com
Subject:	Re: Question about used versions of DJGPP port of GCC
References:	<eec4a99f-368d-ab4e-eeca-29d0c6829d38 AT iki DOT fi>
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Reply-To:	djgpp AT delorie DOT com

Am 17.05.2020 10:45, schrieb Andris Pavenis (andris DOT pavenis AT iki DOT fi) [via djgpp AT delorie DOT com]:
> There are several versions of DJGPP port of GCC on ftp://ftp.delorie.com/pub/djgpp/current/v2gnu.
>
> There is also serious problem with libstdc++ in all off them except gpp346b.zip:
>
> - std::tolower() and std::toupper() are badly broken
>
> Additionally for newer versions std::filesystem support (and some other C++17 related stuff)  is incorrectly not included in libstdc++. There is also libstdc++fs (libstdcfs.a for DJGPP to be distinguisahable on SFN systems) and filsystem support goes there into std::experimental::filesystem namespace. libstdcfs.a was correct in latest build. Use of std::filesytem does not work as required object files are missing fromlibrary.
>
>
> So question:
>
> - which GCC versions are actually being used for DJGPP?
>
>
> Both problems are going to be fixed in upcoming port of GCC-10.1.0. The question is whether we need to keep earlier versions.
>
> 3.4.6 is going to stay. For example one can no more build DJGPP port of Emacs using any recent version. Versions from gcc-4.7.4 to gcc-9.3.0 will perhaps moved to ftp://ftp.delorie.com/pub/djgpp/deleted/v2gnu unless there are real need for them (or their users stay silent and do not respond).
>
>
> Additionally we'll perhaps need refresh of DJGPP-v2.05 as it no more build with gcc-10.1 (and other recent versions). One version of changes can be found as part of djgpp-crx Arch Linux AUR package (https://aur.archlinux.org/packages/djgpp-djcrx/, file djgpp-djcrx-gcccompat.patch <https://aur.archlinux.org/cgit/aur.git/tree/djgpp-djcrx-gcccompat.patch?h=djgpp-djcrx>). It cannot perhaps go in without changes as I did not need to support any older cross-compiler version for ArchLinux and there is already gcc-10.1.0 with std::tolower abd std::toupper problem fixed (misising std::fiilesystem from libstdc++ was never problem for cross-compiler). New version of DJGPP is perhaps nowhere near so we'll have to go with refresh.
>
>
> Andris


I use also gcc 5.5.0 to compile the current versions of Gawk.


Regards,
Juan M. Guerrero

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