cmake and installed binaries

[Brad King]

David Faure wrote:
> I thought cmake had a solution for "running uninstalled binaries" (like our kconfig_compiler program),
> while still being able to run installed binaries of course.
> 
> But at the moment, uninstalled binaries link to the libs in the builddir, and when installing
> they still do that - not good...
> 
> /devel/kde/build/4/kdelibs4_cmake> ldd bin/kconfig_compiler| grep kdecore
>         libkdecore.so.4 => /devel/kde/build/4/kdelibs4_cmake/lib/libkdecore.so.4 (0xb7b4d000)
> 
> /> ldd /usr/local/bin/kconfig_compiler| grep kdecore
>         libkdecore.so.4 => /devel/kde/build/4/kdelibs4_cmake/lib/libkdecore.so.4 (0xb7b51000)
> 
> export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH doesn't change that.

This is the classic rpath problem.  The current CMake code for KDE is 
setup to build with rpaths pointing to the build tree so that developers 
can run it from there.  You can enable the CMake cache option 
CMAKE_SKIP_RPATH and then no rpaths will be put in the binaries.  In 
order to run it from the build tree you'll then have to set 
LD_LIBRARY_PATH yourself.

See this message for a more detailed discussion:

http://mail.kde.org/pipermail/kde-buildsystem/2006-January/000445.html

The KDE CMake code can be updated to set CMAKE_SKIP_RPATH itself to make 
this the default behavior.

-Brad