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PROGRAMS THAT SHOULD NOT BE COMPRESSED
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PKLITE can compress most executable files. However, there are some applications
that cannot be compressed, or do not run correctly when compressed. The follow-
ing is a sample list of such programs.
CV.EXE Microsoft Codeview debugging program.
When run in compressed form, the program returns:
Invalid format in CV.EXE.
The program does a run time check on the .EXE file, and
in compressed form the error is reported. PKLITE
cannot detect this and compresses the file without any
warnings.
C2.EXE Part of Microsoft C 6.00 compiler.
When run in compressed form it reports:
Overlay not found.
This is an example of a program with internal overlays
where the overlay manager works incorrectly with the
compressed .EXE file. When compressing with PKLITE,
the overlay data will be detected and the user will be
prompted as to whether this file should be compressed.
FOXPRO.EXE FoxPro 1.00 - 1.02 Database program.
This program contains internal overlays. It will not
run correctly when in compressed form.
PIFEDIT.EXE Microsoft Windows PIF editing program.
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PKLITE cannot compress any Microsoft Windows executable files. PKLITE detects
whether the file being compressed is a Windows application, and will not
attempt to compress it.
MAKEINI.EXE OS/2 program.
--------------------------
PKLITE cannot compress any OS/2 executable files. PKLITE detects whether the
file being compressed is an OS/2 application, and will not attempt to compress
it.
Programs that modify the executable file.
Programs that modify the load image data in a executable file will not work
correctly in the compressed state. Many programs have setup programs that
modify the executable file itself. An example of this would be the PUTAV
program in PKZIP version 1.10.
If run on a compressed version of PKZIP, the message "Error in: PKZIP.EXE"
will be displayed. The PKZIP program should be expanded to its original size
with the -x option before running PUTAV. After installing the AV, PKZIP may
be recompressed.
Programs that modify the extra overlay data or data stored at the end of the
.EXE file may run correctly in compressed form, since only the load image data
is compressed by PKLITE. StupenDOS version 2.0 is an example of such a program.
Setup information is appended to the .EXE file. Therefore, saving the setup
works correctly with StupenDOS even when in compressed form.
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