On 21.04.2022 at 16:53, John Iliffe wrote: > I tried that with no success. PKG_CONFIG_PATH is set: > > printenv | grep open > PKG_CONFIG_PATH=/usr/openssl-1.1.1n/bin > > ls /usr/openssl-1.1.1n/bin > c_rehash openssl This doesn't look right. There should be a file openssl.pc (or similar) on your system which has the info where OpenSSL is installed. You need to point PKG_CONFIG_PATH to the directory where this file resides. -- Christoph M. Becker