[KDE/Mac] thanks .........

[mi demur]

Excuse me,

do    you source    mean  ?

in http://www.wordreference.com/enfr/source ?
source    vi     business slang (use as a source)

I have read /sw/bin/init.sh

# On Mac OS X 10.4.{x|x<3} there is a dyld bug (rdar://problem/4139432)
# where a library will not load if a library with a matching basename
# is already loaded from one of the system paths,
# the workaround is to set DYLD_FALLBACK_LIBRARY_PATH to :
if [ -z "$DYLD_FALLBACK_LIBRARY_PATH" ]; then
   if [ $osMajorVer -eq 8 -a $osMinorVer -lt 3 ]; then
     DYLD_FALLBACK_LIBRARY_PATH=:
     export DYLD_FALLBACK_LIBRARY_PATH
   fi
fi

the conditionnal control if                  seems fine; it is a  
workaround to set the path.