Finduuid.cmake is not suitable for MacOS about davix

[gbitzes]

I see, thanks for reporting this issue. I'm not intimately familiar with MacOS, please feel free to send a pull request.

Do you know from which version and on the Linux kernel provides the uuid symbols? If it works on SLC6, we could drop libuuid dependency entirely.

[amadio]

Sure, I will make a PR. For Linux I looked a bit more and the header /usr/include/linux/uuid.h does not have uuid_generate_random() in it. For Linux we need libuuid-devel (rpm), uuid-dev (deb), or sys-apps/util-linux (Gentoo Linux only) to get the uuid/uuid.h header and library. But on Macs the header seems to be sufficient.

Is it possible to compile Davix without OpenSSL support? I wonder because you have find_package(OpenSSL) and not find_package(OpenSSL REQUIRED) in `CMakeLists.txt.

[amadio]

Also, I see that you have cmake_minimum_required(VERSION 2.6) in your CMakeLists.txt. Would you consider increasing to 3.0.2, or do you want to maintain backward compatibility as much as possible?

[gbitzes]

About openssl: That's likely a mistake, I don't think davix will build without openssl.

About cmake: Minimum supported platform is SLC6, which has cmake3 using an epel package, so it could work.

Is there some feature you need from cmake3?

[amadio]

I would like to use include(CheckCXXSymbolExists) and I don't see any reference to it in CMake 2.x docs. If SLC6 is the only old platform, I can try on a container and make sure my changes work there.

[gbitzes]

Ok, no worries, feel free to use cmake3, I'll make sure build scripts etc work after your PR.

[amadio]

Sure, but it would be better if after my PR you don't need any extra changes :-).

[amadio]

Hi @gbitzes. I just created #27 to try to address this. Could you please try it and let me know if you have any problems? For ROOT's builtin Davix I use the same file, so it takes precedence over the one in Davix itself, and everything is working, but ROOT requires CMake 3.4.3.

[amadio]

Closed by PR #27, which has been merged.