./cpuminer: /usr/lib/x86_64-linux-gnu/libcurl.so.4: version `CURL_OPENSSL_3' not found (required by ./cpuminer)

[Jedimasterhatch]

Followed all instructions given on Ubuntu 18.10. did a little research and see there may be issues between libcurl 3 and 4. This what I get when I try and install libcurl3.

sudo apt install libcurl3
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package libcurl3 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
libcurl4:i386 libcurl4

E: Package 'libcurl3' has no installation candidate

If anyone knows of a workaround I would appreciate it, or if there is an update to the miner to use libcurl4 planned.

[Shekelme]

The same issue under Ubuntu 18.04. But my solution was simple:

sudo apt-get install libcurl3

But for Ubuntu 18.10 I can confirm that this issue cannot be fixed as simple as under 18.04.

[Bitmonkeyp]

yes working fine ... sudo apt-get install libcurl3 for me

[hgarcia101685]

On Raspberry Pi Zero having this same issue and can't install that package:

pi@falcon1:~/cpuminer $ sudo apt-get install libcurl3
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package libcurl3 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
libcurl4

E: Package 'libcurl3' has no installation candidate

[hgarcia101685]

Update, I was able to resolve this issue by building from source directly. In case this helps anyone.