Verify OpenSSL APIs in configure script

[tiran]

BPO	45536
Nosy	@tiran, @miss-islington
PRs	bpo-45536: Check OpenSSL APIs in configure (GH-29088) #29088 [3.10] bpo-45536: Check OpenSSL APIs in configure (GH-29088) #29099

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/tiran'
closed_at = <Date 2021-10-20.15:47:53.583>
created_at = <Date 2021-10-20.10:40:24.871>
labels = ['expert-SSL', 'type-feature', '3.10', 'build', '3.11']
title = 'Verify OpenSSL APIs in configure script'
updated_at = <Date 2021-10-20.15:47:53.582>
user = 'https://github.com/tiran'

bugs.python.org fields:

activity = <Date 2021-10-20.15:47:53.582>
actor = 'christian.heimes'
assignee = 'christian.heimes'
closed = True
closed_date = <Date 2021-10-20.15:47:53.583>
closer = 'christian.heimes'
components = ['Build', 'SSL']
creation = <Date 2021-10-20.10:40:24.871>
creator = 'christian.heimes'
dependencies = []
files = []
hgrepos = []
issue_num = 45536
keywords = ['patch']
message_count = 4.0
messages = ['404422', '404425', '404474', '404477']
nosy_count = 2.0
nosy_names = ['christian.heimes', 'miss-islington']
pr_nums = ['29088', '29099']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue45536'
versions = ['Python 3.10', 'Python 3.11']

[tiran]

In thread [1] Robin Becker requested to check for working OpenSSL in configure script. With reasonable effort it is possible to probe for basic APIs such as minimum SSL and EVP interface.

[1] https://mail.python.org/archives/list/python-dev@python.org/thread/IIFABHN7DOTCXMRQ72SLJSU4VDWRM2HB/

[tiran]

Example output:

$ ./configure
checking whether compiling and linking against OpenSSL works... yes
checking for --with-openssl-rpath... 
checking whether OpenSSL provides required APIs... yes

$ ./configure --with-openssl=/home/heimes/dev/python/multissl/openssl/3.0.0
checking for openssl/ssl.h in /home/heimes/dev/python/multissl/openssl/3.0.0... yes
checking whether compiling and linking against OpenSSL works... yes
checking for --with-openssl-rpath... 
checking whether OpenSSL provides required APIs... yes

$ ./configure --with-openssl=/home/heimes/dev/python/multissl/openssl/1.0.2u
checking for openssl/ssl.h in /home/heimes/dev/python/multissl/openssl/1.0.2u... yes
checking whether compiling and linking against OpenSSL works... yes
checking for --with-openssl-rpath... 
checking whether OpenSSL provides required APIs... no

[tiran]

New changeset 81520fe by Christian Heimes in branch 'main':
bpo-45536: Check OpenSSL APIs in configure (GH-29088)
81520fe