AIX: Implement shared_target = "aix-solib" support

This builds shared libraries as libxxx.so, libxxx.so.ver and static
libraries as libxxx.a. For shlib_variant builds, it builds libxxx.

AIX: Implement shared_target = "aix-solib" support

This builds shared libraries as libxxx.so, libxxx.so.ver and static
libraries as libxxx.a. For shlib_variant builds, it builds libxxx.so,
libxxxvariant.so.ver, and libxxxx.a. libxxx.so is a linker import
library that directs the linker to embed a run-time dependency
reference to libxxxvariant.so.ver. Only libxxxvariant.so.ver is needed
at runtime.

Fixes #21518

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21540)

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Configurations/platform/Unix.pm: account for variants in sharedlib_simple()

OpenSSL 1.1.1 links the simple libcrypto.so to libcrypto_variant.so,
this was inadvertently dropped.

Configurations/platform/Unix.pm: account for variants in sharedlib_simple()

OpenSSL 1.1.1 links the simple libcrypto.so to libcrypto_variant.so,
this was inadvertently dropped.

Fixes #16605

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/16608)

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platform->sharedlib_simple(): return undef when same as platform->sharedlib()

On some Unix-like platforms, there is no such thing as versioned shared
libraries. In this case, platform->

platform->sharedlib_simple(): return undef when same as platform->sharedlib()

On some Unix-like platforms, there is no such thing as versioned shared
libraries. In this case, platform->sharedlib_simple() should simply
return undef. Among others, this avoids the shared libraries to be
installed as symlinks on themselves.

Fixes #16012

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/16023)

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Configuration: Fix incorrect $unified_info{attributes} references

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.c

Configuration: Fix incorrect $unified_info{attributes} references

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15758)

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Configuration: rework how dependency making is handled

Previously, we had dependency making pretty much hard coded in the
build file templates, with a bit of an exception for Unix family

Configuration: rework how dependency making is handled

Previously, we had dependency making pretty much hard coded in the
build file templates, with a bit of an exception for Unix family
platforms, where we had different cases depending on what dependency
making program was found.

With the Embarcadero C++ builder, a separate scheme appeared, with a
different logic.

This change merges the two, and introduces two config target
attributes:

makedepcmd The program to use, where this is relevant.
This replaces the earlier configuration
attribute 'makedepprog'.
makedep_scheme This is a keyword that can be used by build
files templates to produce different sorts of
commands, but most importantly, to pass as
argument to util/add-depend.pl, which uses
this keyword as a "producer" for the
dependency lines.

If the config target doesn't define the 'makedep_scheme' attribute,
Configure tries to figure it out by looking for GCC compatible
compilers or for the 'makedepend' command.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/15006)

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Unix Makefile generator: separate "simple" shared libraries from import libraries

For Unix like environments, we may have so called "simple" shared
library names (libfoo.so as opposed to

Unix Makefile generator: separate "simple" shared libraries from import libraries

For Unix like environments, we may have so called "simple" shared
library names (libfoo.so as opposed to libfoo.so.1.2), or we may have
"import" library names associated with a DLL (libfoo.dll.a for
libfoo.dll on Mingw and derivatives).

So far, "import" library names were treated the same as "simple"
shared library names, as some kind of normalization for the Unix way
of doing things.

We now shift to treat them separately, to make it clearer what is
what.

Fixes #13414, incidently

Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13875)

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Configure: let platform->dsoext() default with platform->shlibextsimple()

We still use '.so' as a last resort...

Fixes #8950

Reviewed-by: Tim Hudson <tjh@openssl.org>
(

Configure: let platform->dsoext() default with platform->shlibextsimple()

We still use '.so' as a last resort...

Fixes #8950

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8951)

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Build: change remaining $unified_info{install} checks to use attributes

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8063)

Rework building: Unix changes to handle extensions and product names

Add platform::Unix, which is a generic Unix module to support product
name and extensions functionlity. However, thi

Rework building: Unix changes to handle extensions and product names

Add platform::Unix, which is a generic Unix module to support product
name and extensions functionlity. However, this isn't quite enough,
as mingw and Cygwin builds are done using the same templates, but
since shared libraries work as on Windows and are named accordingly,
platform::mingw and platform::Cygwin were also added to provide the
necessary tweaks.

This reworks Configurations/unix-Makefile.tmpl to work out product
names in platform::Unix et al terms. In this one, we currently do
care about the *_extension config attributes, and the modules adapt
accordingly where it matters.

This change also affected crypto/include/internal/dso_conf.h.in, since
the DSO extension is meant to be the same as the short shared library
extension, which isn't '.so' everywhere.

'shared_extension' attributes that had the value
'.so.\$(SHLIB_VERSION_NUMBER)' are removed, platform::Unix provides
an extension where the shared library version number is hard-coded
instead.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/7473)

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