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diff --git a/README.vmesa b/README.vmesa new file mode 100644 index 0000000000..a6bb96b37f --- /dev/null +++ b/README.vmesa @@ -0,0 +1,76 @@ +README.vmesa + +This is a fully ported perl for VM/ESA 2.3.0. It may work on +other versions, but that's the one we've tested it on. + +If you've downloaded the binary distribution, it needs to be +installed below /usr/local. Source code distributions have an +automated `make install` step that means you do not need to extract +the source code below /usr/local (though that is where it will be +installed by default). You may need to worry about the networking +configuration files discussed in the last bullet below. + +To extract an ASCII tar archive on VM/ESA, try this: + + pax -o to=IBM-1047,from=ISO8859-1 -r < latest.tar + +GNU make for VM/ESA, which may be required for the build of perl, +is available from: + + http://pucc.princeton.edu/~neale/vmoe.html + +Once you've unpacked the distribution, run Configure (see INSTALL for +full discussion of the Configure options), and then run make, then +"make test" then "make install" (this last step may require UID=0 +privileges) + +There is a "hints" file for vmesa that specifies the correct values +for most things. Some things to watch out for are + + - this port does support dynamic loading but it's not had much testing + + - Don't turn on the compiler optimization flag "-O". There's + a bug in the compiler (APAR PQ18812) that generates some bad code + the optimizer is on. + + - As VM/ESA doesn't fully support the fork() API programs relying on + this call will not work. I've replaced fork()/exec() with spawn() + and the standalone exec() with spawn(). This has a side effect when + opening unnamed pipes in a shell script: there is no child process + generated under. + + - At the moment the hints file for VM/ESA basically bypasses all of the + automatic configuration process. This is because Configure relies on: + 1. The header files living in the Byte File System (you could put the + there if you want; + 2. The C preprocessor including the #include statements in the + preprocessor output (.i) file. + +When using perl on VM/ESA please keep in mind that the EBCDIC and ASCII +character sets are different. Perl builtin functions that may behave +differently under EBCDIC are mentioned in the perlport.pod document. + +OpenEdition (UNIX System Services) does not (yet) support the #! means +of script invokation. +See: + + head `whence perldoc` + +for an example of how to use the "eval exec" trick to ask the shell to +have perl run your scripts for you. + +If you are interested in the VM and OS/390 ports of perl then see the +perl-mvs mailing list: The Perl Institute (http://www.perl.org/) +maintains a mailing list of interest to all folks building and/or +using perl on EBCDIC platforms. To subscibe, send a message of: + + subscribe perl-mvs + +to majordomo@perl.org. + +Regression tests: as the 5.005 kit was was being assembled +the following "failures" were known to appear on some machines +during `make test` (mostly due to ASCII vs. EBCDIC conflicts), +your results may differ: + +[the list of failures being compiled] |