[Panel-devel] CMake 2.4.7, soversion

[Alex Merry]

As far as I can see, CMake 2.4.6 and earlier ignore the SOVERSION 
property as applied to modules (like when you use kde4_add_plugin).  So 
using
set_target_properties(plasma_applet_clock PROPERTIES VERSION 1.0.0 
SOVERSION 1)
has no effect, and plasma_applet_clock.so will be the only file 
installed, and will be a real file.

However, CMake 2.4.7 now takes notice of this property, but does it 
wrong.  It creates the symlink, but doesn't install the real file.  So 
the clock applet will install plasma_applet_clock.so, a symlink 
pointing to plasma_applet_clock.so.1.0.0.  Which doesn't exist.

Unsurprisingly, this breaks plasma.

This is a cmake bug.  However, given that soversions have never 
supported for plugins in cmake, I think we should remove the soversion 
property lines from all the applet CMakeLists.txt (none of the engines 
set the soversion) as a workaround for now.  I'm report this as a bug 
in CMake as well.

Patches attached.

Alex


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