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- *os_390.txt* For Vim version 6.2. Last change: 2003 May 24
-
-
- VIM REFERENCE MANUAL by Ralf Schandl
-
- *zOS* *z/OS* *OS390* *os390* *MVS*
- This file contains the particulars for the z/OS UNIX version of Vim.
-
- 1. Open source on z/OS UNIX |zOS-open-source|
- 2. Your feedback is needed |zOS-feedback|
- 3. Building VIM for z/OS UNIX |zOS-building|
- 4. ASCII/EBCDIC dependent scripts |zOS-has-ebcdic|
- 5. XTerm Problems |zOS-xterm|
- 6. Motif Problems |zOS-Motif|
- 7 Bugs |zOS-Bugs|
- 8. Known weaknesses |zOS-weaknesses|
- 9. Changes |zOS-changes|
-
- DISCLAIMER:~
- We are IBM employees, but IBM is not responsible for this port. This is our
- private fun, and is provided in the hopes that it may be useful to others.
-
- Please note that this software has NOT been submitted to any formal IBM
- testing and is published AS IS. Please do not contact IBM for support for this
- software, as it is not an official component of any IBM product. IT IS NOT
- SUPPORTED, GUARANTEED, OR RELATED WHATSOEVER TO IBM.
-
- Contributors: ~
- The port to z/OS UNIX was done by Ralf Schandl for the Redbook mentioned
- below.
-
- Changes, bug-reports, or both by:
-
- David Moore
- Anthony Giorgio <agiorgio@fastmail.fm>
- and others
-
- This document was written by Ralf Schandl and revised by Anthony Giorgio.
-
- ==============================================================================
- 1. Open source on z/OS UNIX *OS390-open-source* *zOS-open-source*
-
- If you are interested in other Open Source Software on z/OS UNIX, have a
- look at the following Redbook:
-
- Mike MacIsaac et al
- "Open Source Software for z/OS and OS/390 UNIX"
- IBM Form Number: SG24-5944-01
- ISBN: 0738424633
-
- You can find out more information, order a hard copy, or download a PDF
- version of these Redbooks at:
-
- http://www.redbooks.ibm.com
-
- ==============================================================================
- 2. Your feedback is needed *OS390-feedback* *zOS-feedback*
-
- Vim should compile, link, and run right out of the box on a standard IBM z/OS
- UNIX mainframe. I've personally run it on z/OS V1R2 and V1R3 machines without
- problems.
-
- Many changes had to be done to the code to port Vim to z/OS UNIX. As like
- most UNIX programs, Vim contained heavy ASCII dependencies. I might have
- missed an ASCII dependency, or it is possible that a new one has been added
- with a feature or bug fix. Most programmers are simply not aware of possible
- ASCII/EBCDIC conversion issues. If you hit a problem that seems related to
- this, feel free to contact us at the email addresses above.
-
- One indication of ASCII/EBCDIC conversion problems is screen corruption with
- "unprintable" characters. For example, at one point the errorbell was broken
- in Vim. Any time Vim tried to ring the terminal bell an ASCII character 0x07
- would be printed. This works fine on most terminals, but is broken on an
- EBCDIC one. The correct solution was to define a different value for the bell
- character on EBCDIC systems.
-
- Remember, it's only possible to fix a bug if the community knows about it.
- Don't rely on someone else to report it! See the section |bug-reports|.
-
- ==============================================================================
- 3. Building VIM for z/OS UNIX *OS390-building* *zOS-building*
-
- A word on debugging code first: ~
-
- The normal run of configure adds the flag '-g' to the compiler options,
- to include debugging information into the executable. This information
- are normally removed from the executable with the strip command during
- installation. On z/OS UNIX, it is not possible to remove this from
- the executable. The strip command exists on z/OS UNIX and is called
- during the installation, but it does nothing. It is equivalent to the
- 'touch' command. This is due to the way debug symbols are stored in the
- objects generated by the compiler.
-
- If you want to build Vim without debugging code, export the environment
- variable CFLAGS set to an empty string before you call the configure script.
- >
- export CFLAGS=""
-
-
- Building without X11: ~
-
- Note: Use cc to build Vim. The c89 compiler has stricter syntax checking
- and will not compile Vim cleanly.
-
- If you build VIM without X11 support, compiling and building is
- straightforward. Don't forget to export _CC_CCMODE=1 before calling
- configure and make.
- >
- $ export _CC_CCMODE=1
- $./configure --with-features=big --without-x --enable-gui=no
- $ make
- $ make test
- <
- Test notes:
- Test 11 will fail if you do not have gzip installed.
- Test 42 will fail, as VIM on z/OS UNIX doesn't support the multibyte
- feature. (David Moore: "Doesn't work _yet_! :-) I'll see what I
- can do.")
- >
-
- $ make install
-
-
- Building with X11: ~
-
- There are two ways for building Vim with X11 support. You can link it
- statically with the X11 libraries or can bind it with the X11 DLLs. The
- statically linked version results in a huge executable (~13MB), while the
- dynamically linked executable is much smaller (~4.5MB).
-
- Here is what you do, if you want Motif:
-
- a) Static link >
- $ configure --with-features=big --enable-gui=motif
- $ make
- <
- VIM is now linked statically with the X11 libraries.
-
- b) Dynamic link:
- Make VIM as described for the static link. Then change the contents of
- the 'auto/link.sed' file by appending: >
- s%-lXm *%/usr/lib/Xm.x %g
- s%-lX11 *%/usr/lib/X11.x %g
- s%-lSM *%/usr/lib/SM.x %g
- s%-lICE *%/usr/lib/ICE.x %g
- <
- Then do: >
- $ rm vim
- $ make
- <
- Now Vim is linked with the X11-DLLs.
-
- See the Makefile and the file link.sh on how link.sed is used.
-
- ==============================================================================
- 4. ASCII/EBCDIC dependent scripts *OS390-has-ebcdic* *zOS-has-ebcdic*
-
- For the internal script language the feature "ebcdic" was added. With this
- you can fix ASCII dependent scripts like this:
- >
- if has("ebcdic")
- let space = 64
- else
- let space = 32
- endif
- <
- ==============================================================================
- 5. XTerm problems *OS390-xterm* *zOS-xterm*
-
- Note: This problem was resolved in version 6.1b. ~
-
- I saw one problem with XTerm on z/OS UNIX. The terminal code for moving the
- cursor to the left is wrong in the termlib database. Perhaps not wrong, but
- it didn't work with VIM syntax highlighting and command line cursor movement.
-
- If the highlighting is messed up while you type, but is okay after you refreshed
- the screen with <C-L> or if you can't move to the left with the cursor key on
- the command line, try adding >
- :set t_le=^H
- <
- to your .vimrc. Note: '^H' is one character, hit <C-V><C-H> to get it.
-
- ==============================================================================
- 6. Motif Problems *OS390-Motif* *zOS-Motif*
-
- It seems that in porting the Motif library to z/OS, a translation from EBCDIC
- to ASCII for the accelerator characters of the pull-down menus was forgotten.
- Even after I tried to hand convert the menus, the accelerator keys continued
- to only work for the opening of menus (like <Alt-F> to open the file menu).
- They still do not work for the menu items themselves (like <Alt-F>O to open
- the file browser).
-
- There is no solution for this as of yet.
-
- ==============================================================================
- 7. Bugs *OS390-bugs* *zOS-Bugs*
-
- - Vim will consistently hang when a large amount of text is selected in
- visual block mode. This may be due to a memory corruption issue. Note that
- this occurs in both the terminal and gui versions.
-
- ==============================================================================
- 8. Known weaknesses *OS390-weaknesses* *zOS-weaknesses*
-
- - No binary search in tag files.
- The program /bin/sort sorts by ASCII value by default. This program is
- normally used by ctags to sort the tags. There might be a version of
- ctags out there, that does it right, but we can't be sure. So this seems to
- be a permanent restriction.
-
- - Multibyte support (utf-8) doesn't work, it's disabled at compile time.
- (|multibyte|)
-
- - The cscope interface (|cscope|) doesn't work for the version of cscope
- that we use on our mainframe. We have a copy of version 15.0b12, and it
- causes Vim to hang when using the "cscope add" command. I'm guessing that
- the binary format of the cscope database isn't quite what Vim is expecting.
- I've tried to port the current version of cscope (15.3) to z/OS, without
- much success. If anyone is interested in trying, drop me a line if you
- make any progress.
-
- - No glib/gtk support. I have not been able to successfully compile glib on
- z/OS UNIX. This means you'll have to live without the pretty gtk toolbar.
-
- Never tested:
- - Perl interface (|perl|)
- - Hangul input (|hangul|)
- - Encryption support (|encryption|)
- - Langmap (|'langmap'|)
- - Python support (|Python|)
- - Right-to-left mode (|'rightleft'|)
- - SNiFF+ interface (|sniff|)
- - TCL interface (|tcl|)
- ...
-
- If you try any of these features and they work, drop us a note!
-
- ==============================================================================
- 9. Changes *OS390-changes* *zOS-changes*
-
- This is a small reference of the changes made to the z/OS port of Vim. It is
- not an exhaustive summary of all the modifications made to the code base.
-
- 6.1b (beta):
- Changed KS_LE in term.c to be "\b" instead of "\010" This fixed the
- screen corruption problems in gVim reported by Anthony Giorgio.
-
- Anthony Giorgio updated this document:
- - Changed OS/390 to z/OS where appropriate. IBM decided to rename
- all of its servers and operating systems. z/OS and OS/390
- are the same product, but the version numbering system was
- reset for the name change. (e.g. OS/390 V2R11 == z/OS V1R1)
- - Added information about second edition of the Open Source Redbook.
- - Moved Redbook information to a separate section.
- - Various tweaks and changes.
- - Updated testing section.
-
- 6.0au:
- Changed configure.in
- Changed documentation.
- Anthony Giorgio fixed the errorbell.
-
- David Moore found some problems, which were fixed by Bram and/or David for
- 6.0au.
-
- 6.0q (alpha):
- Minor changes for nrformats=alpha (see |'nrformats'|).
- Problem with hard-coded keycode for the English pound sign. Added a define in
- ascii.h
- Disabled multibyte for EBCDIC in feature.h
-
- 6.0f (alpha):
- First compile of Vim 6 on z/OS UNIX. Some minor changes were needed.
-
- Finally found the reason why make from the top level didn't work (I must have
- been blind before!). The Makefile contained a list of targets in one target
- line. On all other UNIX's the macro $@ evaluates to the first target in this
- list, only on z/OS UNIX it evaluates to the last one :-(.
-
- 5.6-390d:
- Cleaned up some hacks.
-
- 5.6-390c:
- I grepped through the source and examined every spot with a character
- involved in a operation (+-). I hope I now found all EBCDIC/ASCII
- stuff, but ....
-
- Fixed:
- - fixed warning message in do_fixdel()
- - fixed translation from Ctrl-Char to symbolic name (like ^h to CTRL-H)
- for :help
- - fixed yank/delete/... into register
- - fixed :register command
- - fixed viminfo register storing
- - fixed quick-access table in findoptions()
- - fixed 'g^H' select mode
- - fixed tgetstr() 'get terminal capability string', ESC and
- Ctrl chars where wrong. (Not used on OS/390 UNIX)
-
-
- ctags:
- - added trigraphs support (used in prolog of system header files)
- (get.c)
- - fixed sorting order with LC_COLLATE=S390 to force EBCDIC sorting.
- (sort.c)
-
- 5.6-390b:
- Changed:
- - configure.in:
- - added test for OS/390 UNIX
- - added special compiler and linker options if building with X11
- - configure:
- - after created via autoconf hand-edited it to make the test for
- ICEConnectionNumber work. This is a autoconf problem. OS/390 UNIX
- needs -lX11 for this.
- - Makefile
- - Don't include the lib directories ('-L...') into the variable
- ALL_LIBS. Use own variable ALL_LIB_DIRS instead. A fully POSIX
- compliant compiler must not accept objects/libraries and options
- mixed. Now we can call the linker like this:
-
- $(CC) $(LDFLAGS) $(ALL_LIB_DIRS) $(OBJ) $(ALL_LIBS)
-
- Fixed:
- - Double quote couldn't be entered
- Missed ASCII dependencies while setting up terminal
- In ASCII 127 is the delete char, in EBCDIC codepage 1047 the value 127
- is the double quote.
- - fixed ':fixdel'
-
- 5.6-390a:
- first alpha release for OS/390 UNIX.
-
- Addition:
- - For the internal script language I added the feature "ebcdic".
- This can be queried with the has()-function of the internal
- script language.
-
- ------------------------------------------------------------------------------
- vim:tw=78:fo=tcq2:ts=8:ft=help:norl:
-