There was an unused macro in ssl_locl.h that used an internal
type, so I removed it.
Move bio_st from bio.h to ossl_type.h
Reviewed-by: NAndy Polyakov <appro@openssl.org>

Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

Also remove $Makefile variable :)
Reviewed-by: NAndy Polyakov <appro@openssl.org>

Reviewed-by: NRichard Levitte <levitte@openssl.org>

The lflags configuration had a weird syntax with a % as separator.  If
it was present, whatever came before ended up as PEX_LIBS in Makefile
(usually, this is LDFLAGS), while whatever came after ended up as
EX_LIBS.

This change splits that item into lflags and ex_libs, making their use
more explicit.

Also, PEX_LIBS in all the Makefiles are renamed to LDFLAGS.
Reviewed-by: NRich Salz <rsalz@openssl.org>

This reverts commit a450326e.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Reviewed-by: NRich Salz <rsalz@openssl.org>

This is a followin from !1738, we no longer need those variables.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Reviewed-by: NAndy Polyakov <appro@openssl.org>

Also cleaned up bn_prime.pl to current coding style.
Reviewed-by: NAndy Polyakov <appro@openssl.org>

Many options for supporting optimizations for legacy crypto on legacy
platforms have been removed.  This simplifies the source code and
does not really penalize anyone.
        DES_PTR (always on)
        DES_RISC1, DES_RISC2 (always off)
        DES_INT (always 'unsigned int')
        DES_UNROLL (always on)
        BF_PTR (always on) BF_PTR2 (removed)
        MD2_CHAR, MD2_LONG (always 'unsigned char')
        IDEA_SHORT, IDEA_LONG (always 'unsigned int')
        RC2_SHORT, RC2_LONG (always 'unsigned int')
        RC4_LONG (only int and char (for assembler) are supported)
        RC4_CHUNK (always long), RC_CHUNK_LL (removed)
        RC4_INDEX (always on)
And also make D_ENCRYPT macro more clear (@appro)

This is done in consultation with Andy.
Reviewed-by: NAndy Polyakov <appro@openssl.org>

A mistake was made and the setting of this config variable got
reverted to an older behavior.  This restores the latest.
Reviewed-by: NEmilia Käsper <emilia@openssl.org>

Reviewed-by: NRich Salz <rsalz@openssl.org>

Enhances the routines in OpenSSL::Test::Utils for checking disabled
stuff to get their information directly from Configure instead of
'openssl list -disabled'.
Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

- Small rearrangement of the TABLE and HASH printouts, and adding
  printout of the "build_scheme" item
- Renamed "engines_obj" to "padlock_obj"
- Moved the runs of dofile down...  it didn't quite make sense to have
  that in the middle of a printout
Reviewed-by: NRich Salz <rsalz@openssl.org>

Now that we're using templates, we should warn people not to edit the
resulting file.  We do it through util/dofile.pl, which is enhanced
with an option to tell what file it was called from.  We also change
the calls so the template files are on the command line instead of
being redirected through standard input.  That way, we can display
something like this (example taken from include/openssl/opensslconf.h):

    /* WARNING: do not edit! */
    /* Generated by Configure from include/openssl/opensslconf.h.in */
Reviewed-by: NRich Salz <rsalz@openssl.org>

The goal is Makefile, not Makefile.new
Remove the second generation of opensslconf.h
Reviewed-by: NRich Salz <rsalz@openssl.org>

There are two versions of print_table_entry() in Configure.  Remove
the older.
Reviewed-by: NRich Salz <rsalz@openssl.org>

The config for the removed GOST engine reappeared by mistake.  Now
removed again.
Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

It is time for Makefile.org to fold into the new regime and have a run
through util/dofile.pl.  This forces some information out of there and
into Configure, which isn't a bad thing, it makes Configure
increasingly the center of build information, which is as it should
be.

A few extra defaults were needed in the BASE template to get rid of
warnings about missing values.
Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

Reviewed-by: NRich Salz <rsalz@openssl.org>

Move opensslconf.h.in to include/openssl.
Split off DES,BN,RC4 stuff into separate header file
templates in crypto/include/internal/*_conf.h.in
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Now that configdata.pm is the centre of information, use that instead
of Makefile to figure out reconfiguration parameters.  This will help
future development with different Makefile file names.

The code to read necessary configuration data from Makefile is retained
for an easy transition to configdata.pm based information gathering.  It
will be removed later on.

This change includes moving the variable $cross_compile_prefix to %config.
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

The turn has come to have crypto/opensslconf.h.in get run through
util/dofile.pl.  The consequence is that a large number of variables
get moved to the %config table.

Also, the string variables $openssl_*, which were populated with cpp
lines, all being of the form "#define SOMETHING", were converted into
ARRAY refs in %config values, containing just the list of macros to be
defined.
Reviewed-by: NRich Salz <rsalz@openssl.org>

For this adaptation, the variables $options and $version needed to
move to %config in Configure, and why not move all other variables
holding diverse version numbers at the same time?
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

apps/CA.pl and tools/c_rehash are built from template files.  So far,
this was done by Configure, which created its own problems as it
forced everyone to reconfigure just because one of the template files
had changed.
Instead, have those files created as part of the normal build in apps/
and in tools/.

Furthermore, this prepares for a future where Configure may produce
entirely other build files than Makefile, and the latter can't be
guaranteed to be the holder of all information for other scripts.
Instead, configdata.pm (described below) becomes the center of
configuration information.

This introduces a few new things:

%config         a hash table to hold all kinds of configuration data
                that can be used by any other script.
configdata.pm   a perl module that Configure writes.  It currently
                holds the hash tables %config and %target.
util/dofile.pl  a script that takes a template on STDIN and outputs
                the result after applying configuration data on it.
                It's supposed to be called like this:

                        perl -I$(TOP) -Mconfigdata < template > result

                or

                        perl -I$(TOP) -Mconfigdata templ1 templ2 ... > result

                Note: util/dofile.pl requires Text::Template.

As part of this changed, remove a number of variables that are really
just copies of entries in %target, and use %target directly.  The
exceptions are $target{cflags} and $target{lflags}, they do get copied
to $cflags and $lflags.  The reason for this is that those variable
potentially go through a lot of changes and would rather deserve a
place in %config.  That, however, is for another commit.
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

It's time for print_table_entry to get a bit of refreshment.  The way it
was put together, we needed to maintain the list of known configuration
keys of interest twice, in different shapes.  This is error prone, so
move the list of strings to a common list for all printing cases, and
use simple formatting of lines to do the actual printout based on that
list.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Time to get rid of @MK1MF_Builds and introduce a more flexible
'build_scheme' configuration key.  Its value may be a string or an
array of strings, meaning we need to teach resolve_config how to
handle ARRAY referenses.

The build scheme is a word that selects a function to create the
appropriate result files for a certain configuration.  Currently valid
build schemes aer "mk1mf" and "unixmake", the plan is however to add
at least one other for a more universal build scheme.

Incidently, this also adds the functions 'add' and 'add_before', which
can be used in a configuration, so instead of having to repeatedly
write a sub like this:

	key1 => sub { join(" ", @_, "myvalues"); },
	key2 => sub { join(" ", "myvalues", @_); },

one could write this:

	key1 => add(" ", "myvalues"),
	key2 => add_before(" ", "myvalues"),

The good point with 'add' and 'add_before' is that they handle
inheritances where the values are a misture of scalars and ARRAYs.  If
there are any ARRAY to be found, the resulting value will be an ARRAY,
otherwise it will be a scalar with all the incoming valued joined
together with the separator given as first argument to add/add_before.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Move the documentation of the target configuration form to
Configurations/README.

Move initial assembler object templates to
Configurations/00-BASE-templates.conf.

Furthermore, remove all variables containing the names of the
non-assembler object files and make a BASE template of them instead.
The  values from this templates are used as defaults as is.  The
remaining manipulation of data when assembler modules are used is done
only when $no_asm is false.

While doing this, clean out some other related variables that aren't
used anywhere.

Also, we had to move the resolution of the chosen target a bit, or the
function 'asm' would never catch a true $no_asm...  this hasn't
mattered before we've moved it all to the BASE template, but now it
does.

At the same time, add the default for the 'unistd' key to the BASE
template.
Reviewed-by: NRich Salz <rsalz@openssl.org>

--prefix is now exclusively used for software and manual installation.
--openssldir is not exclusively used as a default location for certs,
keys and the default openssl.cnf.

This change is made to bring clarity, to have the two less
intertwined, and to be more compatible with the usual ways of software
installation.

Please change your habits and scripts to use --prefix rather than
--openssldir for installation location now.
Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

It's time to refactor the handling of %disabled so that all
information of value is in the same place.  We have so far had a few
cascading disable rules in form of code, far away from %disabled.
Instead, bring that information to the array @disable_cascade, which
is a list of pairs of the form 'test => descendents'.  The test part
can be a string, and it's simply checked if that string is a key in
%disabled, or it can be a CODEref to do a more complex test.  If the
test comes true, then all descendents are disabled.  This check is
performed until there are no more things that need to be disabled.

Also, $default_depflags is constructed from the information in
%disabled instead of being a separate string.  While a string of its
own is visually appealing, it's much too easy to forget to update it
when something is changed in %disabled.
Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

The way the "reconf"/"reconfigure" argument is handled is overly
complicated.  Just grep for it first, and if it is there in the
current arguments, get the old command line arguments from Makefile.

While we're at it, make the Makefile variable CONFIGURE_ARGS hold the
value as a perl list of strings.  This makes things much safer in case
one of the arguments would contain a space.  Since CONFIGURE_ARGS is
used for nothing else, there's no harm in this.
Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

Split the read_config function into read_config that ONLY reads the
configuration files but doesn't try to resolve any of the
inheritances, and resolve_config which resolves the inheritance chain
of a given target.  Move them to the bottom of Configure, with the
rest of the helpers.

Have a new small hash table, %target, which will hold the values for
the target the user requested.  This also means that all access to the
current target data can be reduced from '$table{$target}->{key}' to a
mere '$target{key}'.

While we're at it, the old string formatted configurations are getting
obsolete, so they may as well get deprecated entirely.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Get rid of the --test-sanity option.  Since we no longer have string
based configurations, we don't have the problem with miscounting
colons any more.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Start simple, removed some unused variables and change all '<<EOF' to
'<<"EOF"'.  The latter is because some code colorizers (notably, in
emacs) cannot recognise the here document end marker unless it's
quoted and therefore assume the rest of the file is part of the here
document.
Reviewed-by: NRich Salz <rsalz@openssl.org>

The GOST engine is now out of date and is removed by this commit. An up
to date GOST engine is now being maintained in an external repository.

See:
https://wiki.openssl.org/index.php/BinariesReviewed-by: NRichard Levitte <levitte@openssl.org>

For BSD systems, Configure adds a shared_ldflags including a reference
to the Makefile variable LIBRPATH, but since it must be passed down to
Makefile.shared, care must be taken so the value of LIBRPATH doesn't
get expanded too early, or it ends up giving an empty string.
Reviewed-by: NViktor Dukhovni <viktor@openssl.org>

Some users want to disable SSL 3.0/TLS 1.0/TLS 1.1, and enable just
TLS 1.2.  In the future they might want to disable TLS 1.2 and
enable just TLS 1.3, ...

This commit makes it possible to disable any or all of the TLS or
DTLS protocols.  It also considerably simplifies the SSL/TLS tests,
by auto-generating the min/max version tests based on the set of
supported protocols (425 explicitly written out tests got replaced
by two loops that generate all 425 tests if all protocols are
enabled, fewer otherwise).
Reviewed-by: NRichard Levitte <levitte@openssl.org>