[openssl/openssl] 18aca6: Configure: do not check for an absolute prefix in ...

[Viktor Szakats]

  Branch: refs/heads/openssl-3.1
  Home:   https://github.com/openssl/openssl
  Commit: 18aca6d74d48d5f76fc1a6e19cab966be4cd5e9f
      https://github.com/openssl/openssl/commit/18aca6d74d48d5f76fc1a6e19cab966be4cd5e9f
  Author: Viktor Szakats <vszakats at users.noreply.github.com>
  Date:   2023-11-15 (Wed, 15 Nov 2023)

  Changed paths:
    M Configure

  Log Message:
  -----------
  Configure: do not check for an absolute prefix in cross-builds

The check is always made according to the host platform's rules, which may
not be true for true when the target platform is different, e.g. when
cross-building for Windows on a Linux machine. So skip this check when
used together with the `--cross-compile-prefix=` option.

Fixes https://github.com/openssl/openssl/issues/9520

Reviewed-by: Paul Dale <pauli at openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit at gmail.com>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22723)

(cherry picked from commit 4ea752997df83c2a694fdb157aab07908303fc90)