Could not build the ssl module! | macOS with `CPPFLAGS` and `LDFLAGS` set

[SamuelMarks]

BPO	43339
Nosy	@SamuelMarks

^{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 = None
closed_at = <Date 2021-02-27.11:59:13.933>
created_at = <Date 2021-02-27.11:43:37.506>
labels = ['build', 'invalid', '3.10']
title = 'Could not build the ssl module! | macOS with `CPPFLAGS` and `LDFLAGS` set'
updated_at = <Date 2021-02-27.11:59:13.933>
user = 'https://github.com/SamuelMarks'

bugs.python.org fields:

activity = <Date 2021-02-27.11:59:13.933>
actor = 'samuelmarks'
assignee = 'none'
closed = True
closed_date = <Date 2021-02-27.11:59:13.933>
closer = 'samuelmarks'
components = ['Build']
creation = <Date 2021-02-27.11:43:37.506>
creator = 'samuelmarks'
dependencies = []
files = []
hgrepos = []
issue_num = 43339
keywords = []
message_count = 2.0
messages = ['387777', '387778']
nosy_count = 1.0
nosy_names = ['samuelmarks']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue43339'
versions = ['Python 3.10']

Linked PRs

• gh-87506: Document that json.load*() can raise UnicodeDecodeError #127355

[SamuelMarks]

I was on 3.10a4 on macOS 11.1 for ages, finally decided to upgrade to a5, building from source. With latest brew install openssl zlib.

$ export LDFLAGS='-L/usr/local/opt/openssl@1.1/lib -L/usr/local/opt/zlib/lib'
$ export CPPFLAGS='-I/usr/local/opt/openssl@1.1/include -I/usr/local/opt/zlib/include'
$ ./configure --enable-optimizations --prefix /opt/python3.10

I suppose I could set this which I forgot, but I doubt it's the problem, unless pkg_config is how the CPython build system find OpenSSL?

export PKG_CONFIG_PATH='/usr/local/opt/openssl@1.1/lib/pkgconfig'

Error:

Python build finished successfully!
The necessary bits to build these optional modules were not found:
_hashlib              _ssl                  ossaudiodev        
spwd                                                           
To find the necessary bits, look in setup.py in detect_modules() for the module's name.


The following modules found by detect_modules() in setup.py, have been
built by the Makefile instead, as configured by the Setup files:
_abc                  pwd                   time               


Could not build the ssl module!
Python requires an OpenSSL 1.0.2 or 1.1 compatible libssl with X509_VERIFY_PARAM_set1_host().
LibreSSL 2.6.4 and earlier do not provide the necessary APIs, https://github.com/libressl-portable/portable/issues/381

Happy to test alternative configurations

[SamuelMarks]

Nevermind it actually was that missing PKG_CONFIG_PATH line…