Greg,
Does this explain problems I'm seeing with building on Centos:
From the current docs:
cmake. You need version 2.6 (or more recent)
With a current centos7 distro after a `yum install cmake`
# cmake --version
cmake version 2.8.12.2
When you build from current master branch you get this error:
CMake Error at CMakeLists.txt:1 (cmake_minimum_required):
CMake 3.1 or higher is required. You are running version 2.8.12.2
This is not seen when you build from the Release_2017_09_2 branch.
Tim
On 04/04/18 04:23, Greg Landrum wrote:
NOTE: If you don't work with the RDKit at the C++ level or build the
code yourself from source, you probably don't need to read this email.
TL;DR: When we do the beta for the 2018.03.1 release we're going to
switch the C++ backend to use modern C++ (=C++11). For people who
can't switch to use that code, we will continue to provide bug fixes
for the 2017.09 release for at least another 6 months.
--------------------------------------
# What's happening?
As part of the upcoming 2018.03 release, we will start using modern
C++ for the RDKit - this means C++11 at the moment, the goal is that
you should be able to build the code with g++ v4.8. I've been talking
about this for a while, blogged about it
(https://medium.com/@greg.landrum_t5/the-rdkit-and-modern-c-48206b966218
<https://medium.com/@greg.landrum_t5/the-rdkit-and-modern-c-48206b966218>),
and posted to the rdkit-devel list
(https://sourceforge.net/p/rdkit/mailman/message/35811216/
<https://sourceforge.net/p/rdkit/mailman/message/35811216/>), now it's
finally happening.
Concretely what this means in github is that the current master branch
will be renamed to legacy and the modern_cxx branch will be renamed to
master.
# Who does this affect?
This should only affect people who need to build the RDKit C++ code
themselves. If you use a binary version of the RDKit like the ones
available inside of Anaconda Python or KNIME, this change should have
no impact upon you.
# What about people who can't use up-to-date compilers?
We realize that some people on older operating systems will not be
able to switch to start using a compiler that supports C++11. In order
to continue to support this subset of developers, we will continue to
apply bug fixes to the current Release_2017_09 branch and do
occasional patch releases. Since this is intended for people who need
to build the code themselves anyway, we won't do builds of these
releases any more.
We will keep doing these patch release at least until the 2018.09
release. Whether or not we continue past that date will depend on
demand, so if you are using these releases please let us know.
# Why are you doing this?
There's a long, rambling answer to this, but I'm not going to give it
here. :-)
The simplest explanation is that we think that the core of the RDKit
should be using a modern and (reasonably) up-to-date version of the
language that it's written in. The developer experience is better and,
happily, the code ends up being faster.
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