I stand corrected. The 64-bit behavior IS the same as 32-bit:
tc@box:/mnt/sda1/lamp64/build/temp$ which unzip
/usr/bin/unzip
tc@box:/mnt/sda1/lamp64/build/temp$ unzip --help
BusyBox v1.27.1 (2017-08-10 13:51:41 UTC) multi-call binary.
Usage: unzip [-lnopq] FILE[.zip] [FILE]... [-x FILE...] [-d DIR]
Extract FILEs from ZIP archive
-l List contents (with -q for short form)
-n Never overwrite files (default: ask)
-o Overwrite
-p Print to stdout
-q Quiet
-x FILE Exclude FILEs
-d DIR Extract into DIR
tc@box:/mnt/sda1/lamp64/build/temp$ unzip ../../../lamp/src/Recode-master.zip
Archive: ../../../lamp/src/Recode-master.zip
creating: Recode-master/
...
...
tc@box:/mnt/sda1/lamp64/build/temp$ tce-load -i unzip
unzip.tcz: OK
tc@box:/mnt/sda1/lamp64/build/temp$ which unzip
/usr/local/bin/unzip
tc@box:/mnt/sda1/lamp64/build/temp$ unzip --help
BusyBox v1.27.1 (2017-08-10 13:51:41 UTC) multi-call binary.
Usage: unzip [-lnopq] FILE[.zip] [FILE]... [-x FILE...] [-d DIR]
Extract FILEs from ZIP archive
-l List contents (with -q for short form)
-n Never overwrite files (default: ask)
-o Overwrite
-p Print to stdout
-q Quiet
-x FILE Exclude FILEs
-d DIR Extract into DIR
tc@box:/mnt/sda1/lamp64/build/temp$ $(which unzip) --help
UnZip 6.00 of 20 April 2009, by Info-ZIP. Maintained by C. Spieler. Send
bug reports using http://www.info-zip.org/zip-bug.html; see README for details.
Usage: unzip [-Z] [-opts[modifiers]] file[.zip] [list] [-x xlist] [-d exdir]
Default action is to extract files in list, except those in xlist, to exdir;
file[.zip] may be a wildcard. -Z => ZipInfo mode ("unzip -Z" for usage).
-p extract files to pipe, no messages -l list files (short format)
-f freshen existing files, create none -t test compressed archive data
-u update files, create if necessary -z display archive comment only
-v list verbosely/show version info -T timestamp archive to latest
-x exclude files that follow (in xlist) -d extract files into exdir
modifiers:
-n never overwrite existing files -q quiet mode (-qq => quieter)
-o overwrite files WITHOUT prompting -a auto-convert any text files
-j junk paths (do not make directories) -aa treat ALL files as text
-C match filenames case-insensitively -L make (some) names lowercase
-X restore UID/GID info -V retain VMS version numbers
-K keep setuid/setgid/tacky permissions -M pipe through "more" pager
See "unzip -hh" or unzip.txt for more help. Examples:
unzip data1 -x joe => extract all files except joe from zipfile data1.zip
unzip -p foo | more => send contents of foo.zip via pipe into program more
unzip -fo foo ReadMe => quietly replace existing ReadMe if archive file newer
tc@box:/mnt/sda1/lamp64/build/temp$ mv Recode-master/ Recode-master-bb
tc@box:/mnt/sda1/lamp64/build/temp$ $(which unzip) ../../../lamp/src/Recode-master.zip
Archive: ../../../lamp/src/Recode-master.zip
2d7092a9999194fc0e9449717a8048c8d8e26c18
creating: Recode-master/
...
...
Comparing the two directories shows that not only is the executable bit not preserved, the file times are not either.
Also, to use GNU diff I had to $(which diff) as busybox prefers it's own here too.