How to install openssl35-dev on Debian

Development files for openssl35

Vendor: GetPageSpeed LLC https://github.com/openssl/openssl

Availability

Compare package tracks by distribution and architecture. Checkmarks show the architectures available in each repository channel.

Distro	Channel	amd64	arm64	Version
Debian 13 (trixie)	Base			3.5.8
Debian 12 (bookworm)	Base			3.5.8

Description

An ABI-isolated build of the OpenSSL 3.5 LTS line carrying the Encrypted Client Hello (ECH, RFC 9849) backport from the DEfO project. This package provides the C headers (under /usr/include/openssl35/openssl/), the development .so symlinks, and pkg-config files (libcrypto+openssl35.pc, libssl+openssl35.pc, openssl+openssl35.pc) for building applications against openssl35.

Built for Debian.

Install

Base Debian 12, 13

openssl35-dev on Debian 12 (bookworm), 13 (trixie)

curl -fsSL https://extras.getpagespeed.com/release-latest.deb -o /tmp/getpagespeed-release.deb
sudo apt-get install -y /tmp/getpagespeed-release.deb
rm /tmp/getpagespeed-release.deb
sudo apt-get update
sudo apt-get install -y openssl35-dev

Frequently asked questions

How do I install openssl35-dev on Debian?

Add the GetPageSpeed repository, then install the openssl35-dev package with your system package manager.

Which Debian versions is openssl35-dev available for?

openssl35-dev is available for Debian 12, 13.