...funny enough I never noticed this obvious mistake,
since I never install software directly into my system,
while the DEB-build does not use absolute paths...
Solution:
* SCons has this speical convention that a path prefixed with '#'
is resolved relative to the root of the build (where the SConstruct resides)
* now we apply this automatically to the two relevant settings
** INSTALLDIR
** TARGDIR
* but only (conditionally) if the configured path is relative, not absolute
As a consequence, most other hard-coded usages of the '#'-prefix can then be dropped
Ichthyostega
5a5168b145