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diff --git a/runtime/doc/os_390.txt b/runtime/doc/os_390.txt new file mode 100644 index 000000000..420260692 --- /dev/null +++ b/runtime/doc/os_390.txt @@ -0,0 +1,340 @@ +*os_390.txt* For Vim version 7.0aa. Last change: 2003 Jun 03 + + + 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: |