5.2.3 #ELSE

Syntax:

#ELSE can be specied after a #IFDEF or #IFNDEF directive as an alternative. Lines following #ELSE are skipped read if the preceding #IFDEF or #IFNDEF was accepted.

They are skipped until the keyword #ENDIF is encountered, after which normal processing is resumed.

Example :

In the above example, /usr/lib/fpc/0.99.5/linuxunits will be added to the path if you're compiling with version 0.99.5 of the compiler, otherwise /usr/lib/fpc/0.99.6/linuxunits will be added to the path.