This is so cool! Thank you!

Does this version have a speed benchmark?

R-998 wrote on 2025-01-10, 20:25:

Does this version have a speed benchmark?

No, the `b` command in retro7zip is disabled because the DOS runtime lacks the necessary timers and counters, both POSIX-style and NT-style.

Implementing the 7-Zip benchmark for DOS is something that I might do later.

dajhorn wrote on 2025-01-10, 18:50:

Retro7zip is a native backport of 7-Zip for DOS and Win32c:

What do you mean by "Win32c"?
I can only see LE executables for DOS extender...

The 24.09+2 release runs on FreeDOS, MS-DOS, SvarDOS, OS/2, Windows 95, Windows NT 3.1, and most other DOS platforms.

But it runs in DOS session, with LFN support only in Windows 9x, right?

What do you mean by "Win32c"?
I can only see LE executables for DOS extender...

The earlier 24.08 release was built for win32c and used the HX extender. That code is still in repo, and I intend to do a proper release for Windows NT 3.1 or Windows NT 3.5 later, perhaps with the 7zFM GUI.

But it runs in DOS session, with LFN support only in Windows 9x, right?

No. If something like DOSLFN.COM is running -- like FreeDOS 1.4 installs by default -- then long file names will work without Windows 9x.

OK, I'm trying to understand which version to use for which OS...
Just tried the original Win32 version under Windows 98 SE, but: "linked to missing export..."

For the original 7-zip: You'll need to use KernelEX on 98-ME if you want to use versions of 7-zip > v9.30.

DosFreak wrote on 2025-01-10, 23:00:

For the original 7-zip: You'll need to use KernelEX on 98-ME if you want to use versions of 7-zip > v9.30.

OK, meanwhile this DOS version seems to work...

Excellent! 👍

Previously, I had to use HX-DOS with the console version of 7-zip 9.20 as existing DOS ports of P7ZIP couldn't properly handle DOS file paths.

Thanks!

just missing 7zz. See here:
https://github.com/myfreeer/7z-build-nsis

Grzyb wrote on 2025-01-10, 22:55:

OK, I'm trying to understand which version to use for which OS...
Just tried the original Win32 version under Windows 98 SE, but: "linked to missing export..."

7-Zip 24.09 for Windows 95 and Windows NT

Let me know how well the updated win32c build works.

DosFreak wrote on 2025-01-10, 23:00:

For the original 7-zip: You'll need to use KernelEX on 98-ME if you want to use versions of 7-zip > v9.30.

On pure Windows 98 SE, the original 7-Zip 24.09 won't even install.
After adding KernelEx 4.5.2, it does install, but won't run - "Unsupported Windows version" or "linked to missing export...".

So, using the DOS port for now, and waiting for the early-Win32 (is "Win32c" the official name for that?) port...

Hehe, what a time warp! 🤣

I wonder if you can make a smaller one that size is comparable with old 7zdecwat?

Grzyb wrote on 2025-01-12, 01:32:

On pure Windows 98 SE, the original 7-Zip 24.09 won't even install. After adding KernelEx 4.5.2, it does install, but won't run […]
Show full quote

DosFreak wrote on 2025-01-10, 23:00:

For the original 7-zip: You'll need to use KernelEX on 98-ME if you want to use versions of 7-zip > v9.30.

On pure Windows 98 SE, the original 7-Zip 24.09 won't even install.
After adding KernelEx 4.5.2, it does install, but won't run - "Unsupported Windows version" or "linked to missing export...".

So, using the DOS port for now, and waiting for the early-Win32 (is "Win32c" the official name for that?) port...

There have been a lot of updates to KernelEx since 4.5.2, there is a thread on MSFN but this thread isn't for the original 7-zip so best to leave that for a different thread.

roytam1 wrote on 2025-01-12, 02:09:

I wonder if you can make a smaller one that size is comparable with old 7zdecwat?

https://www.ibiblio.org/pub/micro/pc-stuff/fr … hiver/7zdec.zip

The updated 7zdec-24.08 variant is already in FreeDOS. And just 67 kilobytes small.

dajhorn wrote on 2025-01-12, 02:49:

roytam1 wrote on 2025-01-12, 02:09:

I wonder if you can make a smaller one that size is comparable with old 7zdecwat?

https://www.ibiblio.org/pub/micro/pc-stuff/fr … hiver/7zdec.zip

The updated 7zdec-24.08 variant is already in FreeDOS. And just 67 kilobytes small.

yeah but it is still bigger than Rugxulo's 7zdecwat's 42KB in size.

roytam1 wrote on 2025-01-12, 03:42:

yeah but it is still bigger than Rugxulo's 7zdecwat's 42KB in size.

Version 17 lacks PPMD8, LFN, crypto, and the latest hashers.

Version 24.08 has a build misconfiguration that add a few kilobytes, but it won't get much smaller than it already is.

EDIT: This DOS version of 7ZA appears to NOT work with wildcards or directories, rendering it almost entirely useless. Per the examples (and every other version of 7zip I've ever used), the example command in the help doesn't work, eg:
7za a -mx a.7z *.txt
doesn't work, even when there are many .txt files in the directory. It just aborts and creates a 32-byte .7z file with zero files added. On the other hand, 7za (and also the included 7zr and 7zm .exe) do successfully create archives with each file manually specified (eg, "7z a a.7z a.txt b.txt c.txt ... ). Also, it doesn't work to add directories, eg (7z a a.7z sample\) to add "directory \sample to the archive. I even tried UNIX-style switches (eg, "7za a a.7z /sample" even though this didn't make sense.

Why didn't you make it possible to add files with wildcards or just by not explicitly stating any files to - by default - add ALL files, eg "7za a -mx a.7z" should just create a .7z archive with all files in the current directory added, just like in every other version of 7zip I've ever used?

How in the world to add directories and use wildcards when creating new .7z files? I must either be missing something major or my brain must be cooked.

I also replaced the Causeway DOS extender with CWSDPMI and D3X stubs and still the same behavior as above. Madness...

Outstanding. Long live MS-DOS in 2025 and beyond.

The last version of 7zip for DOS that I could find was version 16.02 . This is a great upgrade. I'm testing speed and robustness compared to the very old DOS versions (9.20 and 16.02), and hope this one is faster for the same settings, especially on newer systems on bare metal.

As to 7zdec, the 42 kb version referenced above is super fast and lean. RayeR also made some versions of 7zdec (based on 7zdec from 7zip versions 15 and 16) for DOS which were even smaller (30kb or so UPXed).

Incidently, does your new compile support the newest libdeflate and zopfli variants of creating a deflate'd ZIP archive, as advanceZIP version 2.6 (binary available for DOS) does?