Automatically Make Multiple Builds

I've skimmed through the manual and googled this briefly, but I can't seem to find any documentation on it.

How do I make multiple builds/installers from the same script at once?

open cmd and type:

path_to_nsis\makensis.exe /DBUILD=0.1.2.3 path_to_your_script\script.nsi

On the top of your script:

!ifdef BUILD

!if BUILD = 0.1.2.3

# do something

!else if BUILD = 0.2.3.4

# do something else and so on

!endif

!else # BUILD is not defined

# do something else

!endif

You should make batch files to simplify this operation.