From the linked thread one can deduce the problem is the need of a swap file/partition or more space?
It starts with the (physical) amount of memory.
When the system runs out of (free) physical memory then it uses the swap- file/partition in order to try to fulfill the requests.
If physical memory and swap are not enough for what is required by your software then you literally run out of memory.
In practice the actual process of swapping memory to a file/partition and back again is a bit more complicated then described above though but that is not really important to know. You just ran out of memory
The more sources that fpc-deluxe needs to compile to be able to finish its work correctly, the more strain is put on both physical memory and swap.
Seems to me that the RAM increase benefited the swap partition usage, I don't know for sure but I can continue working now
Yes, you are good to go now.
It is always a bit trial and error to find a good balance between physical memory and size of swap file/partition. Compiling a compiler is very demanding and often exceeds settings that usually work for normal circumstances (such as running your every day application)
Thank you for your time and advice !
No problem.
thank you for trying and reporting back, as the latter advice was really a long-shot for me.
Your symptoms just matched those from the linked thread. For some reason i never seem to have ran into a similar situation myself (i was already warned when i tried to compile the compiler on my pi for instance).