DOS ain't dead - p7zip 16.02

p7zip 16.02 (Announce)

posted by Zyzzle, 06.11.2016, 13:02

> > 7-Zip 16.02 2016-05-21
>
> Since July 14, there's now p7zip 16.02 sources available:
>
> https://sourceforge.net/projects/p7zip/files/p7zip/16.02/

With the 16.02 and 15.09 DOS binaries, I've again stumbled into the UNIX-compile bug whereby all standard deflate .zip archives created will not extract with Pkware's own Pkunzip utilities. I get the message "You need Pkzip version 78.8 to extract." I posted about this years ago,

http://www.bttr-software.de/forum/forum_entry.php?id=8418

and found a solution by a quick-and-dirty patch to the 7ZA.EXE file so that 0x03 'UNIX' descriptor byte was set to the proper 0x00 'MS-DOS' Operating System.

I'm unable to accomplish this with the above 15.09 or 16.02 binaries. I'm wondering if a new compile will be nessary, as I can't locate the magic bytes 0x03 ---> 0x00 to modify.

We have a simple flag being set incorrectly, and this is indeed hard to troubleshoot. It's a UNIXism which is a carryover to these compiles. Certainly PKware's own PKZIP archiver SHOULD be able to decompress 7zip .zip files correctly! This is a stubborn bug.

Perhaps someone more adept than I can re-compile with the flag correctly set? I'm at my wit's end.

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Complete thread:

7-zip archiver 15.09, CURL, WGET from Michael Kostylev - RayeR, 01.12.2015, 14:02 (Announce)
- 7-zip archiver 15.09, CURL, WGET from Michael Kostylev - glennmcc, 01.12.2015, 23:47
  - 7-zip archiver 15.09, CURL, WGET from Michael Kostylev - glennmcc, 04.12.2015, 02:36
    - 7-zip archiver 15.09, CURL, WGET from Michael Kostylev - glennmcc, 24.12.2015, 23:41
- 7-zip archiver 15.09, CURL, WGET from Michael Kostylev - DOS386, 12.12.2015, 07:26
  - 7-zip archiver 15.09, CURL, WGET from Michael Kostylev - david, 24.12.2015, 15:19
  - 7-zip archiver 15.09 from Michael Kostylev - Rugxulo, 16.03.2016, 00:39
    - 7zdec 15.14 (from LZMA SDK) - Rugxulo, 26.04.2016, 01:42
    - 7-zip archiver 15.09 from Michael Kostylev - Rugxulo, 26.04.2016, 01:44
      - PIV, 16-ZIP is out - DOS386, 27.05.2016, 11:10
        p7zip 16.02 - Rugxulo, 30.07.2016, 07:18
        p7zip 16.02 - Rugxulo, 16.10.2016, 18:19
        p7zip 16.02 - Rugxulo, 23.02.2017, 16:23
        p7zip 16.02 - Zyzzle, 06.11.2016, 13:02