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1993-06-24
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README file for gzip on VMS
written by Klaus Reimann <kr@cip.physik.uni-stuttgart.de>
Here is a list of the files in [.vms]:
GZIP.HLP ! Help-file, how to use gzip
MAKEFILE.GCC ! Description for (vms-)make, using gcc
MAKEFILE.MMS ! Description for MMS-utility, using vaxc
MAKEFILE.VMS ! Description for (vms-)make, using vaxc
MAKEGZIP.COM ! simple and robust DCL-Script, using vaxc
README.VMS ! this file, how to install gzip
VMS.C ! VMS-specific functions in gzip
This file describe, how to compile and install the VMS-Port of gzip.
>>For restrictions or bugs due to the structure of the vms-filesystem
refer to gzip.hlp.<<
Installing gzip
Since there are many makefiles there are many possibilities
compiling and installing gzip. For most of them, it is important,
that you start them from the SOURCE-Directory (that is where
gzip.c is), not from the [.vms]-directory. Otherwise the compiler
won't find the source-files.
Using gcc saves disk-space, but needs longer to compile
VAXC gzip.exe 95/96 Blocks
gcc2.3.3 gzip.exe 86/87 Blocks
To install gzip one has to perform the following steps:
1. compile sources (*.c, [.vms]*.c)
2. link executable gzip.exe
3. Make entries gunzip.exe and zcat.exe to gzip.exe.
These are similar to hardlinks in UNIX
>>If You wish to do this by hand, see for example makegzip.com.<<
The Entries can't be simply deleted, use 'set file /remove' .
4. Rename executables (*.exe) to Your prefered exe-directory. If it is on
another Device, then you should only copy gzip.exe and do the
entries gunzip.exe and zcat.exe by hand (3.).
5. Setting up Symbols for the executables:
Place the following lines in Your login.com
Change "disk:[directory]" as appropriate.
$ gzip == "$disk:[directory]gzip.exe"
$ gunzip == "$disk:[directory]gunzip.exe"
$ zcat == "$disk:[directory]zcat.exe"
6. insert help-file gzip.hlp in any Help-library,
for example in sys$help:helplib.
this can be done by $lib sys$help:helplib/help gzip
(I did not try this command)
Steps (4.)5. through 6 must be done by hand.
Steps 1 through 3(4.) may be done by one of the makefiles:
a) MAKEGZIP.COM
This was crated from MAKEFILE.VMS and later on edited. It uses the
VAXC-Compiler and does compiling, linking and making the entries.
Usage:
- change to the Source-Directory
- copy vms.c
$copy [.vms]vms.c []
- start compiling, linking, entries
$@[.vms]makegzip
if everything is OK. then you get gzip.exe, gunzip.exe, zcat.exe
continue at Step 4.
b) MAKEFILE.VMS
Makefile for a vms-make utility (NOT gnu-make).
Is uses the VAXC-Compiler and has the Advantage over MAKEGZIP.COM
that make checks dependencies. This is helpfull if You have to
recompile several times, for example after editing the sources.
- change to the Source-Directory
- copy vms.c
$copy [.vms]vms.c []
- start compiling, linking, entries
$make /input=[.vms]makefile.vms
if everything is OK. then you get gzip.exe, gunzip.exe, zcat.exe
Continue at Step 4.
c) MAKEFILE.GCC
Same as MAKEFILE.VMS, but uses gcc
- Use $make /input=[.vms]makefile.gcc instead of make ....
d) MAKEFILE.MMS
Makefile for the MMS-utility. Similar to MAKEFILE.VMS
- Use $mms /description=[.vms]makefile.mms instead of make ....