Questions about cross compiling for ARM / CMake issues

[Andreas Pakulat]

On 27.02.12 14:53:33, Samuel Stirtzel wrote:
> 2012/2/27 Andreas Pakulat <apaku at gmx.de>:
> > On 27.02.12 14:16:38, Samuel Stirtzel wrote:
> >> 2012/2/27 Samuel Stirtzel <s.stirtzel at googlemail.com>:
> >> > Hi,
> >> > this is part of the approach to port Plasma Active to OpenEmbedded
> >> > (see [1], [2]).
> >> >
> >> >
> >> > In the current status the kdelibs build fine.
> >> >
> >> > However there is an issue where other packages (like e.g. Nepomuk) use
> >> > the wrong libraries.
> >> > In this case Nepomuk tries to use the Hosts x86_64 libraries for
> >> > kdecore and kdeui, (see http://pastebin.com/CqqSGxYY for an example).
> >> >
> >> > The path "/work/oe-core/tmp-eglibc/sysroots/overo/" is the staging
> >> > sysroot of the build target.
> >> > And since CMAKE_FIND_ROOT_PATH is set to that path, it should not
> >> > "find" the library somewhere else..?
> >> > "CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY" is also set.
> >> >
> >> > Is this by any chance related to the absolute paths in the
> >> > KDELibsDependencies.cmake file?
> >> >
> >> >
> >> >
> >> > Anyone has an idea what I'm missing to solve this?
> >> > Help would be appreciated.
> >> >
> >> >
> >> > Links:
> >> > [1] Plasma Active port to OpenEmbedded:
> >> > http://lists.kde.org/?l=kde-active&m=132940140929418&w=2
> >> > [2] OpenEmbedded: http://www.openembedded.org/wiki/Main_Page
> >> >
> >> > --
> >> > Regards
> >> > Samuel
> >>
> >> Just to clarify my question, changing the KDELibsDependencies.cmake
> >> file does not solve my problem.
> >> In the logs it states "Found KDE 4.7 library dir:
> >> /work/oe-core/tmp-eglibc/sysroots/overo/usr/lib" but still the error
> >> occurs: "/usr/lib/libkdecore.so.5.7.0: file not recognized: File
> >> format not recognized"
> >>
> >> Is there any Black Magic™ that finds the core library and relentless
> >> ignores all the other settings?
> >
> > Please provide at least the complete linker line (make VERBOSE=1) so we
> > can see how kdecore is being linked.
> 
> Thanks for your answer.
> 
> Here the complete line with verbose=1: http://pastebin.com/EebmCiN2

Ok, so the absolute path to kdecore&Co is wrong. Hmm, makes me wonder
wether kdelibs supports cross-compilation at all...

> From what I discovered, it is likely that
> KDELibs4LibraryTargets-relwithdebinfo.cmake could be responsible, but
> where is this file created?

Thats generated as part of the kdelbis build, I believe by cmake (look
for install(EXPORT...) lines). Which cmake version are you using?

Andreas