RE: Removal of the autotools-based build system

> -----Original Message-----
> From: Barry Leslie [mailto:[email protected]]
> Sent: Monday, November 08, 2010 6:31 PM
> To: Davi Arnaut; Dimitri
> Cc: Kristian Nielsen; MySQL Internal; [email protected]
> Subject: Re: Removal of the autotools-based build system
> 
> Hi,
> 
> I do not no that much about Cmake but one thing that PBXT and PBMS make use
> of is the ability to be built outside of the MySQL tree. For this we use the
> config.status file to get the compile options used for the MySQL build so
> that the engines will be built with the same options to ensure
> compatibility.

You can extract compiler options from CMakeCache.txt   in server's build directory . The file is readable (human and machine).
You'd want to use CMAKE_{C,CXX}_FLAGS_{DEBUG,RELWITHDEBINFO} from it. The default build is "release with debug info"  and will have
RELWITHDEBINFO flags , the debug build will have DEBUG flags.

If you want to build with  exact compile options as server is built for release, you'd can invoke cmake   with    -C
${path_to_mysql_source}/cmake/build_configurations/mysql_release.cmake (it contains the options for various compilers and OSes and
other stuff).


Vladislav.

> It would be nice if the new build system made it easier to build
> engines/plugins out side of the build tree.
> 
> Barry
> 
> 
> On 11/8/10 6:57 AM, "Davi Arnaut" <[email protected]> wrote:
> 
> > Hi Dimitri,
> >
> > On 11/8/10 12:27 PM, Dimitri wrote:
> >> Hi Davi,
> >>
> >> the errors I've got due a classic "configure + make"  -  then on
> >> "make" it started to print errors related to "libtool", etc..
> >>
> >> Of course, once there will be no more "configure" - there will be no
> >> errors either..
> >>
> >
> > Right. We also took the opportunity to fix quite a few hacks which were
> > associated with the way we built the server and libraries. For example,
> > we no longer build a non-threaded libmysql (also, C/Connector is now a
> > separate project) and we also avoid building certain things twice.
> >
> > Bottom line, the transition to cmake has made the build system somewhat
> > more saner and easy to tweak and has yielded a speed up in build times.
> > Although there is a learning curve, it is worth the effort. We also
> > documented thoroughly how to build with cmake at
> > http://forge.mysql.com/wiki/CMake, so there shouldn't be much surprises.
> >
> > Regards,
> >
> > Davi
> 
> -------------------------------------------------------------------------
> Barry Leslie
> 
> SNAP Innovation Softwareentwicklung GmbH
> Senior Software Engineer
> 
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