%% S�bastien Douheret <[EMAIL PROTECTED]> writes:

  sd> SEARCH_DATE := `cat ${H_FILE_VERSION} | grep ${PRJ_DATE}`

Make doesn't do ``.  This just sets SEARCH_DATE to the actual string
"`cat ${H_FILE_VERSION} | grep ${PRJ_DATE}`", which obviously is never
empty.

If you want to actually run a shell command you need to use the GNU make
$(shell ...) function, not backticks.

-- 
-------------------------------------------------------------------------------
 Paul D. Smith <[EMAIL PROTECTED]>          Find some GNU make tips at:
 http://www.gnu.org                      http://make.paulandlesley.org
 "Please remain calm...I may be mad, but I am a professional." --Mad Scientist


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