If you're using the CRAN build of R, it's likely safer to follow the instructions at https://mac.r-project.org/bin/. These will get you a build of openssl that is definitely compatible with the CRAN build of R.

Duncan Murdoch

On 2025-12-21 3:39 p.m., Michael McQuaid wrote:
On macOS, I would suggest saying

brew install openssl

if you have homebrew installed. If not, I suggest you visit homebrew's site
and install it.

- Mick


On Sun, Dec 21, 2025 at 2:06 PM Ivan Krylov via R-help <[email protected]>
wrote:

Dear Andre Luiz Tietbohl Ramos,

В Sun, 21 Dec 2025 07:12:28 -0300
Andre Luiz Tietbohl Ramos <[email protected]> пишет:


dlopen(/Library/Frameworks/R.framework/Versions/4.5-x86_64/Resources/library/curl/libs/curl.so,
6): Library not loaded: /usr/lib/libssl.48.dylib

It seems the issue is on the /usr/lib/libssl.48.dylib that doesn't
exist. In fact, there are no libssl* files. I appreciate suggestions
to solve this problem.

If you don't get a better answer here, consider asking at
[email protected], but don't just post the same question a second
time to the same list. (I'd like to help you, but I don't have a Mac.)

Over at <https://github.com/jeroen/curl/issues/427>, Jeroen recommended
installing 'curl' from source. Unfortunately, I can't figure out what
went wrong because the important part of the log is omitted. Try that
running install.packages('curl', type='source') again and look at the
messages related to 'curl' being installed.

--
Best regards,
Ivan

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