New submission from Christian Heimes <li...@cheimes.de>:

Python's configure script has the option --with-openssl. It sets a path to a 
custom OpenSSL installation. Internally it provides OPENSSL_INCLUDES, 
OPENSSL_LIBS, and OPENSSL_LDFLAGS. The setup.py script turns the variables into 
include_dirs, library_dirs, and libraries arguments for _ssl and _hashlib 
extension modules.

However neither --with-openssl nor setup.py sets a custom runtime library path 
(rpath). This makes it confusing and hard for users to use a custom OpenSSL 
installation. They need to know that a) they have to take care of rpath on the 
first place, and b) how to set an rpath at compile or runtime. Without an 
rpath, the dynamic linker either fails to locate libssl/libcrypto or load 
system-provided shared libraries. Ticket bpo-34028 contains examples of user 
issues.

I propose to include a new option to make it easier for users to use a custom 
build of OpenSSL:

--with-openssl-rpath=<DIR|auto|no>

no (default): don't set an rpath
auto: auto-detect rpath from OPENSSL_LDFLAGS (--with-openssl or pkg-config)
DIR: set a custom rpath

The option will only affect the rpath of _ssl and _hashlib modules. The default 
value "no" is fully backwards compatible with 3.9 and earlier.

----------
assignee: christian.heimes
components: Installation, SSL
messages: 388463
nosy: barry, christian.heimes, gregory.p.smith, pablogsal
priority: normal
severity: normal
stage: patch review
status: open
title: ssl/hashlib: Add configure option to set or auto-detect rpath to OpenSSL 
libs
type: enhancement
versions: Python 3.10

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue43466>
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