Cross-compiling with cmake?

[Steven Boswell II]

>>Now I'm trying to build phonon
>
>About a year ago I tried to get various pieces of the KDE stack
>cross-compiled using the Fedora MinGW toolchain.  The phonon package
>is also part of this.  The spec file for it can be found at
>http://svn.nntpgrab.nl/svn/fedora_cross/mingw-phonon/mingw-phonon.spec

Thanks for this resource.  I tried desperately to find pre-existing work for all the MinGW packages I was trying to build, but didn't find your archive.

>My original plan was to get all the core KDE packages built and
>afterwards trying to make the mingw32_cmake/mingw64_cmake macros in
>mingw-filesystem more generic.  As I'm not that familiar with CMake
>and due to the lack of time I didn't get to completing this original plan.
>
>If you want to continue with this work-in-progress, feel free to use
>the spec file I just mentioned as starting point.

I will!  I'm pretty familiar with cmake, so I can help with this.

>On my svn repo you can also find other packages which are still a
>work-in-progress and need more work before they can be allowed in
>Fedora.  If you're interested in maintaining any of them feel free to
>use them and propose them for review.  The repo can be found at
>http://svn.nntpgrab.nl/svn/fedora_cross/

Indeed I will!  Real life is threatening to intrude any second now, but currently, I have time for this.

>Are you using the mingw_cmake (or mingw32_cmake/mingw64_cmake) macros
>to build the package?

Yes, I am.  I wouldn't try to do things the hard way :-)

>>The problem seems to be in
>>/usr/share/mingw/Toolchain-mingw{32,64}.cmake -- it looks like it
>>needs a "SET(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)" line.
>
>This particular parameter is currently already set to 'NEVER' in the
>mingw-filesystem package.  As mentioned before I'm not that familiar
>with CMake and I don't know what this parameter does.  If you believe
>this parameter should be changed then I would recommend you to file a
>bugreport against mingw-filesystem with rationale why it should be
>changed.

Will do.  If the reason behind this bug is lack of knowledge of cmake, that's fine -- that's where I'll be able to help.  I have a few other things I'd like to fix too.  I'll file a bug report about all of them at once.

>>Also, it seems like there would have to be mingw{32,64}-cmake and
>>mingw64-cmake packages, just to provide /usr/share/cmake/Modules --
>>executables wouldn't be necessary.
>
>Do you mean that you want to have a mingw-cmake package which only
>owns the folders %{mingw32_sysroot}/share/cmake/Modules and
>%{mingw64_sysroot}/share/cmake/Modules and doesn't have any other
>content?  In that case I would be better to add this folder to the
>mingw-filesystem package.

Right now, my mingw32-cmake package contains the following:

/usr/i686-w64-mingw32/sys-root/mingw/etc/rpm/macros.cmake
/usr/i686-w64-mingw32/sys-root/mingw/share/aclocal/cmake.m4
/usr/i686-w64-mingw32/sys-root/mingw/share/cmake/Modules/*
/usr/i686-w64-mingw32/sys-root/mingw/share/cmake/Templates/*
/usr/i686-w64-mingw32/sys-root/mingw/share/doc/cmake-2.8.10.2/Example/*

mingw64-cmake is similar.

If you'd rather put those into mingw-filesystem, that's your perogative.  I'll go mess with the build of mingw-filesystem to see if I can figure out how to get them in there.

Steven Boswell
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