freebsd-src/crypto/openssl/NOTES-VMS.md
Pierre Pronchery b077aed33b Merge OpenSSL 3.0.9
Migrate to OpenSSL 3.0 in advance of FreeBSD 14.0.  OpenSSL 1.1.1 (the
version we were previously using) will be EOL as of 2023-09-11.

Most of the base system has already been updated for a seamless switch
to OpenSSL 3.0.  For many components we've added
`-DOPENSSL_API_COMPAT=0x10100000L` to CFLAGS to specify the API version,
which avoids deprecation warnings from OpenSSL 3.0.  Changes have also
been made to avoid OpenSSL APIs that were already deprecated in OpenSSL
1.1.1.  The process of updating to contemporary APIs can continue after
this merge.

Additional changes are still required for libarchive and Kerberos-
related libraries or tools; workarounds will immediately follow this
commit.  Fixes are in progress in the upstream projects and will be
incorporated when those are next updated.

There are some performance regressions in benchmarks (certain tests in
`openssl speed`) and in some OpenSSL consumers in ports (e.g.  haproxy).
Investigation will continue for these.

Netflix's testing showed no functional regression and a rather small,
albeit statistically significant, increase in CPU consumption with
OpenSSL 3.0.

Thanks to ngie@ and des@ for updating base system components, to
antoine@ and bofh@ for ports exp-runs and port fixes/workarounds, and to
Netflix and everyone who tested prior to commit or contributed to this
update in other ways.

PR:		271615
PR:		271656 [exp-run]
Relnotes:	Yes
Sponsored by:	The FreeBSD Foundation
2023-06-23 18:53:36 -04:00

4.7 KiB

Notes for the OpenVMS platform

Requirement details

In addition to the requirements and instructions listed in INSTALL.md, this are required as well:

  • At least ODS-5 disk organization for source and build. Installation can be done on any existing disk organization.

About ANSI C compiler

An ANSI C compiled is needed among other things. This means that VAX C is not and will not be supported.

We have only tested with DEC C (aka HP VMS C / VSI C) and require version 7.1 or later. Compiling with a different ANSI C compiler may require some work.

Please avoid using C RTL feature logical names DECC$* when building and testing OpenSSL. Most of all, they can be disruptive when running the tests, as they affect the Perl interpreter.

About ODS-5 directory names and Perl

It seems that the perl function canonpath() in the File::Spec module doesn't treat file specifications where the last directory name contains periods very well. Unfortunately, some versions of VMS tar will keep the periods in the OpenSSL source directory instead of converting them to underscore, thereby leaving your source in something like [.openssl-1^.1^.0]. This will lead to issues when configuring and building OpenSSL.

We have no replacement for Perl's canonpath(), so the best workaround for now is to rename the OpenSSL source directory, as follows (please adjust for the actual source directory name you have):

$ rename openssl-1^.1^.0.DIR openssl-1_1_0.DIR

About MMS and DCL

MMS has certain limitations when it comes to line length, and DCL has certain limitations when it comes to total command length. We do what we can to mitigate, but there is the possibility that it's not enough. Should you run into issues, a very simple solution is to set yourself up a few logical names for the directory trees you're going to use.

About debugging

If you build for debugging, the default on VMS is that image activation starts the debugger automatically, giving you a debug prompt. Unfortunately, this disrupts all other uses, such as running test programs in the test framework.

Generally speaking, if you build for debugging, only use the programs directly for debugging. Do not try to use them from a script, such as running the test suite.

The following is not available on Alpha

As a compromise, we're turning off the flag that makes the debugger start automatically. If there is a program that you need to debug, you need to turn that flag back on first, for example:

$ set image /flag=call_debug [.test]evp_test.exe

Then just run it and you will find yourself in a debugging session. When done, we recommend that you turn that flag back off:

$ set image /flag=nocall_debug [.test]evp_test.exe

About assembler acceleration

OpenSSL has assembler acceleration for a number of BIGNUM and crypto routines. The VMS config targets tries to look for a selection of assemblers and will use what they find. If none of the assemblers are found, OpenSSL will be built as if no-asm was configured.

For Itanium / IA64 / I64

  • There is only one assembler, a port of Intel's ias, found in the HP Open Source Tools CD, available through DECUSlib. It's assumed to be set up as per the instructions, where disk and dir are expected to be adapted to local conditions:

    $ ias :== $disk:[dir]iasi64.exe
    

Checking the distribution

There have been reports of places where the distribution didn't quite get through, for example if you've copied the tree from a NFS-mounted Unix mount point.

The easiest way to check if everything got through as it should is to check that this file exists:

[.include.openssl]configuration^.h.in

The best way to get a correct distribution is to download the gzipped tar file from ftp://ftp.openssl.org/source/, use GZIP -d to uncompress it and VMSTAR to unpack the resulting tar file.

Gzip and VMSTAR are available here:

http://antinode.info/dec/index.html#Software

Should you need it, you can find UnZip for VMS here:

http://www.info-zip.org/UnZip.html

How the value of 'arch' is determined

'arch' is mentioned in INSTALL. It's value is determined like this:

arch = f$edit( f$getsyi( "arch_name"), "upcase")