[mythtv] Linux to MacOSX cross compilation

Emlyn Bolton emlyn.bolton at gmail.com
Thu Mar 3 19:07:26 UTC 2011

On 28 February 2011 10:50, Lawrence Rust <lvr at softsystem.co.uk> wrote:

> You may be aware of the Linux to Windows cross compilation script that I
> developed.  Well, I've added a few more features to it, the most notable
> being Linux to MacOSX cross compilation.
> Don't get worried, this isn't a replacement for the current osx-packager
> but a tool to improve cross platform compatibility.  That is, ensuring
> that sources committed to git can be built on all supported platforms.
> The build-bot runs on Linux and would ideally verify that the currently
> checked-in sources compile correctly for all supported platforms.
> The revised script uses the Open Darwin cctools and Apple's gcc which
> provide a gcc 4.0.1 compatible toolchain that supports MacOSX 10.4u and
> 10.5.  This is a pretty minimal setup and should mean that any Mac can
> build and run MythTV.
> The cross compiler is very straightforward to build using this script:
> http://www.softsystem.co.uk/download/mythtv/mkodcctools
>  # Select an installation folder
>  export PREFIX=/opt/mac
>  sudo mkdir -p $PREFIX
>  sudo chown $USER:$USER $PREFIX
>  # Create a build folder
>  mkdir -p ~/xtools && cd ~/xtools
>  # This build script automates the rest
>  wget http://www.softsystem.co.uk/download/mythtv/mkodcctools
>  chmod +x mkodcctools
>  ./mkodcctools
>  # Add the cross tools to your path:
> NB due to Apple licensing conditions, you will be prompted to open an
> Apple developer account and download the XCode Tools manually.
> The defaults are XCode 2.4.1 and the 10.4 SDK although it's possible to
> use a different releases of XCode & SDK as follows:
> SDKVER="MacOSX10.5" XCODEVER="3.2.2" ./mkodcctools
> Once you have built the cross compiler, get the new MythTV build script
> from here:
> http://www.softsystem.co.uk/download/mythtv/mythbuild.sh
> or here:
> git clone http://www.softsystem.co.uk/git/mythbuilder.git
> cd to a build folder and cross compile MythTV for MacOSX:
> ./mythbuild.sh -M
> This will build all dependent libraries, including Qt and mysql, from
> the same sources used to build the Windows (or Linux) version and
> largely with the same configure options where practical.
> The product is a set of un-bundled programs and dylibs.  I haven't
> verified if they run - it's a bonus if they do.  What is important is
> that the source compiles cleanly.
I wonder how hard it would be to use the existing Mac packaging script to
get these to bundle into a MythFrontend.app/ directory?

Once I've compiled, I'll have a look... If nobody else is already doing so?

> I did find that the current git master needed a few minor patches, which
> are include in the latest mythpatches downloaded by the script.  I'll
> submit these to Trac.  You can view those changes here:
> http://www.softsystem.co.uk/cgi-bin/gitweb.cgi?p=mythbuilder.git;a=blob;f=mythpatches-0.24/mythtv-master/51-macosx.diff;h=1165c87b91c60e4e34c404bdaa25834028a87fc0;hb=HEAD
> Comments, criticisms & suggestions please...
> -- Lawrence
> _______________________________________________
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> mythtv-dev at mythtv.org
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