Do not include duplicate files multiple times in the Inno Setup installer

Question

Can the size of my installer be reduced?

At the moment I have this code for my GoogleAuthAndSync support utility:

; Google Calendar Interface v3
Sour         


        

Answer 1

I found the solution that allows InnoSetup compiler to succesfully deduplicate files during compression, the intrested part of my config is:

Compression=lzma2/ultra64
LZMANumBlockThreads=4
CompressionThreads=4
LZMADictionarySize=262144 ; this allows to find duplicated files and succesfully deduplicate them (but compressor consumes up to 2.5GB / ram during compilation)
LZMAUseSeparateProcess=yes
SolidCompression=yes

InnoSetup version is 6.0.2 (u)