2023-03-01 05:21:31 +01:00
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Notes for the OpenVMS platform
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==============================
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- [Requirement details](#requirement-details)
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- [About ANSI C compiler](#about-ansi-c-compiler)
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- [About ODS-5 directory names and Perl](#about-ods-5-directory-names-and-perl)
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- [About MMS and DCL](#about-mms-and-dcl)
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- [About debugging](#about-debugging)
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- [Checking the distribution](#checking-the-distribution)
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Requirement details
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-------------------
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In addition to the requirements and instructions listed
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in [INSTALL.md](INSTALL.md), this are required as well:
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* At least ODS-5 disk organization for source and build.
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Installation can be done on any existing disk organization.
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About ANSI C compiler
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---------------------
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An ANSI C compiled is needed among other things. This means that
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VAX C is not and will not be supported.
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We have only tested with DEC C (aka HP VMS C / VSI C) and require
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version 7.1 or later. Compiling with a different ANSI C compiler may
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require some work.
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Please avoid using C RTL feature logical names `DECC$*` when building
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and testing OpenSSL. Most of all, they can be disruptive when
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running the tests, as they affect the Perl interpreter.
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About ODS-5 directory names and Perl
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------------------------------------
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It seems that the perl function canonpath() in the `File::Spec` module
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doesn't treat file specifications where the last directory name
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contains periods very well. Unfortunately, some versions of VMS tar
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will keep the periods in the OpenSSL source directory instead of
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converting them to underscore, thereby leaving your source in
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something like `[.openssl-1^.1^.0]`. This will lead to issues when
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configuring and building OpenSSL.
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We have no replacement for Perl's canonpath(), so the best workaround
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for now is to rename the OpenSSL source directory, as follows (please
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adjust for the actual source directory name you have):
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$ rename openssl-1^.1^.0.DIR openssl-1_1_0.DIR
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About MMS and DCL
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-----------------
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MMS has certain limitations when it comes to line length, and DCL has
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certain limitations when it comes to total command length. We do
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what we can to mitigate, but there is the possibility that it's not
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enough. Should you run into issues, a very simple solution is to set
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yourself up a few logical names for the directory trees you're going
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to use.
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About debugging
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---------------
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If you build for debugging, the default on VMS is that image
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activation starts the debugger automatically, giving you a debug
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prompt. Unfortunately, this disrupts all other uses, such as running
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test programs in the test framework.
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Generally speaking, if you build for debugging, only use the programs
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directly for debugging. Do not try to use them from a script, such
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as running the test suite.
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### The following is not available on Alpha
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As a compromise, we're turning off the flag that makes the debugger
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start automatically. If there is a program that you need to debug,
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you need to turn that flag back on first, for example:
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$ set image /flag=call_debug [.test]evp_test.exe
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Then just run it and you will find yourself in a debugging session.
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When done, we recommend that you turn that flag back off:
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$ set image /flag=nocall_debug [.test]evp_test.exe
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2023-06-01 00:06:50 +02:00
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About assembler acceleration
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----------------------------
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OpenSSL has assembler acceleration for a number of BIGNUM and crypto
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routines. The VMS config targets tries to look for a selection of
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assemblers and will use what they find. If none of the assemblers are
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found, OpenSSL will be built as if `no-asm` was configured.
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### For Itanium / IA64 / I64
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- There is only one assembler, a port of Intel's `ias`, found in the
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HP Open Source Tools CD, available through [DECUSlib](http://www.decuslib.com).
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It's assumed to be set up as per the instructions, where `disk` and
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`dir` are expected to be adapted to local conditions:
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$ ias :== $disk:[dir]iasi64.exe
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2023-03-01 05:21:31 +01:00
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Checking the distribution
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-------------------------
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There have been reports of places where the distribution didn't quite
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get through, for example if you've copied the tree from a NFS-mounted
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Unix mount point.
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The easiest way to check if everything got through as it should is to
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check that this file exists:
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[.include.openssl]configuration^.h.in
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The best way to get a correct distribution is to download the gzipped
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tar file from ftp://ftp.openssl.org/source/, use `GZIP -d` to uncompress
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it and `VMSTAR` to unpack the resulting tar file.
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Gzip and VMSTAR are available here:
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<http://antinode.info/dec/index.html#Software>
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Should you need it, you can find UnZip for VMS here:
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<http://www.info-zip.org/UnZip.html>
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How the value of 'arch' is determined
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-------------------------------------
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'arch' is mentioned in INSTALL. It's value is determined like this:
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arch = f$edit( f$getsyi( "arch_name"), "upcase")
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