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diff --git a/chromium/third_party/cygwin/lib/perl5/5.10/pods/perlvmesa.pod b/chromium/third_party/cygwin/lib/perl5/5.10/pods/perlvmesa.pod new file mode 100644 index 00000000000..98fa5ec9cfd --- /dev/null +++ b/chromium/third_party/cygwin/lib/perl5/5.10/pods/perlvmesa.pod @@ -0,0 +1,131 @@ + +This document is written in pod format hence there are punctuation +characters in odd places. Do not worry, you've apparently got +the ASCII->EBCDIC translation worked out correctly. You can read +more about pod in pod/perlpod.pod or the short summary in the +INSTALL file. + +=head1 NAME + +README.vmesa - building and installing Perl for VM/ESA. + +=head1 SYNOPSIS + +This document will help you Configure, build, test and install Perl +on VM/ESA. + +=head1 DESCRIPTION + +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. + +=head2 Unpacking Perl Distribution on VM/ESA + +To extract an ASCII tar archive on VM/ESA, try this: + + pax -o to=IBM-1047,from=ISO8859-1 -r < latest.tar + +=head2 Setup Perl and utilities on VM/ESA + +GNU make for VM/ESA, which may be required for the build of perl, +is available from: + + http://vm.marist.edu/~neale/vmoe.html + +=head2 Configure Perl on VM/ESA + +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: + +=over 4 + +=item * + +this port does support dynamic loading but it's not had much testing + +=item * + +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. + +=item * + +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. + +=item * + +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. + +=back + +=head2 Testing Anomalies of Perl on VM/ESA + +The "make test" step runs a Perl Verification Procedure, usually before +installation. As the 5.6.1 kit 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] + +=head2 Usage Hints for Perl on VM/ESA + +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 invocation. +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. + +=head1 AUTHORS + +Neale Ferguson. + +=head1 SEE ALSO + +L<INSTALL>, L<perlport>, L<perlebcdic>. + +=head2 Mailing list for Perl on VM/ESA + +If you are interested in the VM/ESA, z/OS (formerly known as OS/390) +and POSIX-BC (BS2000) ports of Perl then see the perl-mvs mailing list. +To subscribe, send an empty message to perl-mvs-subscribe@perl.org. + +See also: + + http://lists.perl.org/showlist.cgi?name=perl-mvs + +There are web archives of the mailing list at: + + http://www.xray.mpe.mpg.de/mailing-lists/perl-mvs/ + http://archive.develooper.com/perl-mvs@perl.org/ + +=cut + |