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From "Andrew Schwartzmeyer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2756) Add CMake build system for better cross-platform support
Date Thu, 13 Apr 2017 23:07:41 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15968364#comment-15968364
] 

Andrew Schwartzmeyer commented on ZOOKEEPER-2756:
-------------------------------------------------

The attached patch is what we'll be using for Mesos.

{quote}
    Port build system to CMake.
    
    This notably lacks Solaris and libtool support.
    
    Almost everything else from Autotools has been ported,
    including header/function/library checks, and all targets
    (zookeeper, hashtable, cli, load_gen, and tests).
    
    Both Linux and Windows are supported.
    
    While `load_gen.c` looks at first glance as if it were ported to Windows,
    it never actually was, so the erroneous `#include "win32port.h"` was
    removed, and the target is not built on Windows.
    
    There are existent warnings which this patch did not attempt to fix,
    save a few easy ones.
    
    Some changes to `winconfig.h` necessary to build with Visual Studio 2015
    (and 2017) were included; these originally came from a patch embedded
    inside the Mesos build process.
    
    Final application of this patch should likely split these changes into a
    few commits.
{quote}

> Add CMake build system for better cross-platform support
> --------------------------------------------------------
>
>                 Key: ZOOKEEPER-2756
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2756
>             Project: ZooKeeper
>          Issue Type: Improvement
>          Components: build, c client
>    Affects Versions: 3.5.2
>         Environment: Windows and Linux
>            Reporter: Andrew Schwartzmeyer
>              Labels: build, windows
>         Attachments: ZOOKEEPER-2756.patch
>
>
> The C bindings primary build system is Autotools. This obviously does not work for Windows,
and so the original port to Windows simply added a Visual Studio solution to the project,
splitting the build system. As new versions of Visual Studio have come along, new (probably
auto-converted) solutions have come along (see zookeeper.sln vs zookeeper-vs2013.sln). When
Mesos started being ported to Windows, a Visual Studio 2015 solution was needed, and the previous
developer created yet another solution, and setup Mesos' build to patch ZooKeeper and add
the 2015 solution. Now Visual Studio 2017 was released, and in the process of moving Mesos
ahead, I realized that I would either have to make *yet another* converted solution for ZooKeeper.
So instead I tackled the root problem, and ported the Autotools build to CMake, which is a
meta-build system which generates files for the in-use platform (whether it be Linux or Solaris
or MacOS or Windows).
> NOTE: I already have this patch, and will submit it. It has a couple TODOs, and some
other things in it that were necessary for Mesos that may need to be pulled into separate
patches.



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