Installing pycurl on MacOS with Python 3.6+ and newer proved to be tricky, especially since a lot of the available resources seem to be outdated (1, 2, 3).
This gist was last updated at 2020-12-31.
- Remove previously installed Homebrew versions of
curl:
brew uninstall curl
brew uninstall openssl
brew uninstall curl-openssl- Install
openssland acurlversion that uses openssl rather than SecureTransport, which MacOScurluses by default. Note that Homebrew no longer allows options while installing, so it's not possible to dobrew install curl --with-openssl. This was replaced with a different brew formula,curl-openssl, and again replaced on2020-01-20with the current version of justcurl.:
brew install openssl
brew install curl # this is the latest version with openssl- Now we need to use the new curl when installing pycurl. We can also export the path to the new curl to make it used by default:
echo 'export PATH="/usr/local/opt/[email protected]/bin:$PATH"' >> ~/.zshrc # or ~/.bash_profile
echo 'export PATH="/usr/local/opt/curl/bin:$PATH"' >> ~/.zshrc
source ~/.zshrc
source ~/.virtualenvs/foo_venv/bin/activate # or whichever venv you're using
export PYCURL_SSL_LIBRARY=openssl
export LDFLAGS="-L/usr/local/opt/curl/lib"
export CPPFLAGS="-I/usr/local/opt/curl/include"
pip install --no-cache-dir --compile --ignore-installed --install-option="--with-openssl" --install-option="--openssl-dir=/usr/local/opt/[email protected]" pycurl- Test with:
python
>>> import pycurl- The original OS X one in
/usr/bin/curl:
$ /usr/bin/curl --version
curl 7.64.1 (x86_64-apple-darwin20.0) libcurl/7.64.1 (SecureTransport) LibreSSL/2.8.3 zlib/1.2.11 nghttp2/1.41.0
Release-Date: 2019-03-27
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtsp smb smbs smtp smtps telnet tftp
Features: AsynchDNS GSS-API HTTP2 HTTPS-proxy IPv6 Kerberos Largefile libz MultiSSL NTLM NTLM_WB SPNEGO SSL UnixSockets- The Homebrew one in
/usr/local/opt/curl/bin/curl:
$ /usr/local/opt/curl/bin/curl --version
curl 7.74.0 (x86_64-apple-darwin20.2.0) libcurl/7.74.0 (SecureTransport) OpenSSL/1.1.1i zlib/1.2.11 brotli/1.0.9 zstd/1.4.8 libidn2/2.3.0 libssh2/1.9.0 nghttp2/1.42.0 librtmp/2.3
Release-Date: 2020-12-09
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps mqtt pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp
Features: alt-svc AsynchDNS brotli GSS-API HTTP2 HTTPS-proxy IDN IPv6 Kerberos Largefile libz Metalink MultiSSL NTLM NTLM_WB SPNEGO SSL TLS-SRP UnixSockets zstdAnd our pycurl should use the second one, both at linker level and at compile level.
@vidakDK I keep hitting the issue, even after following the instructions. Perhaps there has been an update to homebrew or BigSur?
For reference, my homebrew curl version
When trying to run my code, I still get this error
Has anyone hit this issue again?
EDIT: I am hitting this on Python 2, sorry if this comment is completely unrelated seeing as you have posted this gist for Python 3. I still think if anyone finds a fix to a similar problem then, this will help me.